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Heterometallic Ln(Na)-MOFs (Ln=Tb, Dy, Ho): Crystal Structures, Luminescent Sensing for Acetaldehyde, Fe3+, Cr2O72-, and Electrochemical Sensing for Catechol
Hong-Mei CHAI, Jia-Ling YAN, Yi-Xia REN, Lou-Jun GAO, Gang-Qiang ZHANG, Yan ZHANG, Shu-Yuan HAO
2021, 37(11): 1913-1921  doi: 10.11862/CJIC.2021.232
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摘要:
Three new 3D microporous isostructural heterometallic metal organic frameworks Ln(Na)-MOFs: {[LnNa(BDT)(H2O)3]·2H2O}n (Ln=Tb (1), Dy (2), Ho (3), H4BDT=3, 5-bis(3', 5'-dicarboxylphenyl)-1H-1, 2, 4-triazole), have been synthesized under solvothermal condition, and characterized by single crystal X-ray diffraction, elemental analysis, thermogravimetric analysis, and powder X-ray diffraction. Structural analysis demonstrates that they possess the same 3D frameworks based on similar heteronuclear bimetallic units. Fluorescence studies show that Tb (Na)-MOF (1) can detect Fe3+ ion, Cr2O72- anion, and acetaldehyde molecules with high sensitivity and selectivity by luminescent sensing, and can also be used for electrochemical detection of catechol in water.
Structures and Luminescence Property of Two Co(Ⅱ) and Cd(Ⅱ) Supramolecular Coordination Networks Created via Synergistic Effect of Coordination Bonds and Secondary Interactions
Yong-He REN, Lu-Chao LI, Qi-Hui DING, Yong-Qing HUANG, Yue ZHAO
2021, 37(11): 2047-2058  doi: 10.11862/CJIC.2021.224
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Two complexes with chemical formulas[Co(L)2(H2O)4]·2H2O (1) and[Cd(L)2(H2O)]·3H2O (2) were obtained by the reaction of 3-carboxy-1-(4-carboxybenzyl)-pyridinium bromide ((H2L) Br) with corresponding Co(Ⅱ) and Cd(Ⅱ) metal salts. Crystal structure analysis reveals that 1 is a neutral mononuclear complex, which possesses abundant hydrogen bond and π-π interaction components and can be used as supramolecular synthons. In the case of 1, mononuclear[Co(L)2(H2O)4] coordination entities are first joined via hydrogen bonding to produce channel-structured 2D layers, which are further stacked via π-π stacking effect in an interdigitating fashion, generating a 3D porous supramolecular assembly. 2 features a polymeric 1D zigzag chain structure, which is connected via π-π interactions between pendent L ligands, resulting in the formation of 1D ladder chains. Such 1D ladder chains are further combined into wave-like 2D sheets via another two kinds of π-π stacking between two adjacent side rails of 1D ladder chains. Such 2D sheets are further assembled via eight types of O-H…O hydrogen bonds to form a 3D supramolecular structure. According to topological viewpoint based on 1D chains, the 3D structure of 2 can also be deemed as the plywood-like array. In addition, 2 shows strong ultraviolet fluorescence emission with an average life-time of 2.54 ns.
Controlling Distribution of Gold Nanoparticles in Au@ZIF-8 Core-Shell Structures for Sensing Fluorescent Molecules with Photoluminescence
Wei ZHANG, Yu-Yi ZHANG, Ya-Jie BIAN, Meng-Di CHEN, Xiao-Lei ZHANG, Qing-Yuan JIN, Bing-Wen HU
2021, 37(11): 2059-2067  doi: 10.11862/CJIC.2021.229
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Controlling the distribution of metal nanoparticles in metal@MOF core-shell structures is not easy to realize. We applied the coordination modulation method which has been studied in the synthesis of MOF colloids to synthesize Au@ZIF-8 core-shell nanostructures. Different Au@ZIF-8 core-shell nanostructures have been achieved by employing an excess amount of 2-methylimidazole and various amount of 1-methylimidazole. With our method, the distribution of Au nanoparticles (Au NPs) could be flexibly tuned in the ZIF-8 nanocrystals. Moreover, we investigated the photoluminescent spectra and lifetime of two fluorescent molecules with different sizes, combined with Au@ZIF-8 separately. The aperture size of ZIF-8 determines whether to let the molecules pass through the porous shell to approach Au NPs, and the molecular optical properties are sensitive to the competition of luminescent enhancement and fluorescent quenching of Au NPs.
Difunctional Effects of Organo-Modified T-Type Zeolite Membranes for Dewatering from Organic Solution
Xue CUI, Yu-Ping ZHANG, Tian GUI, Ming-Liang HE, Fei ZHANG, Na HU, Yu-Qin LI, Xiang-Shu CHEN
2021, 37(11): 2068-2078  doi: 10.11862/CJIC.2021.228
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3-aminopropyltriethoxysilane (APTES) was introduced to modify the surface of T-type zeolite membranes. Characterizations, such as X-ray diffraction, field-emission scanning electron microscopy, X-ray photoelectron spectroscopy and FT-IR, demonstrated that APTES was successfully modified on the membrane surface by chemical bonding. The modified APTES plays two roles: one is to improve the membrane hydrophilicity and the other is to reduce the defects of membrane layer. The modified membranes showed a high separation factor and water flux for the dewatering of a 90% isopropyl alcohol solution at 348 K. This method showed good reproducibility, and five modified membranes demonstrated an increased separation factor by about 8 times (from 359±23 to 2 934±183), and a slightly decreased total flux from (3.52±0.10) kg·m-2·h-1 to (3.06±0.14) kg·m-2·h-1 (a decrease of 13.07%). At 363 K, during 100 h of continuous testing, the modified membrane was very stable, and the permeation side retained a high-water content above 99.50% with a feed solution of 90% isopropyl alcohol.
Synthesis, Structure Regulation and Characterization of Cadmium(Ⅱ) Complexes Based on Imidazole Carboxylic Acid Ligands
Ding-Qi XIONG, Peng-Kui FU, Yu-Yan LI, Xiao-Yu ZHANG, Qing-Lin YANG, Mei-Mei JIA, Yan-Yan ZHU, Xiu-Yan DONG
2021, 37(11): 2079-2091  doi: 10.11862/CJIC.2021.231
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Two new cadmium(Ⅱ) complexes were synthesized by hydrothermal method with 2-(4-carboxy-phenyl)-imidazole-4, 5-dicarboxylic acid (H3L) through the auxiliary ligands 1, 10-phenanthroline(1, 10-phen) and 1, 4-bis(1-imidazolyl) benzene(dib) coordination regulation effect, [Cd2(HL)2(1, 10-phen)2(H2O)2] (1) and {[Cd(HL)(dib)0.5(H2O)2]·2H2O}n (2). 1 and 2 were analyzed and characterized by single crystal X-ray diffraction, element analysis, thermo-gravimetric analysis, powder X-ray diffraction, infrared spectroscopy, Hirshfeld surface analysis, and density functional theory quantification calculations. Single crystal X-ray diffraction shows that 1 and 2 belong to the triclinic system and the P1 space group, and 1 forms a zero-dimensional structure, 2 forms a one-dimensional chain structure.
Preparation of Dehydrated Ni-Fe Hydrotalcite-like Compounds as an Eco-Friendly Catalyst for Highly Selective Acetalization of Biomass-Derived Furfural
Shu-Yan CHENG, Jia-Wei KOU, Fang-Qin CHENG
2021, 37(11): 2092-2100  doi: 10.11862/CJIC.2021.220
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The dehydrated Ni-Fe hydrotalcite-like compounds (Ni-Fe HTLCs) containing nitrate anions were synthesized and applied in furfural acetalization at room temperature. The dehydrated Ni-Fe HTLCs showed good selectivity for furfural acetalization and achieved almost complete conversion of furfural. The dehydrated Ni-Fe HTLCs as water-tolerant Lewis acids and water scavengers was proved to be an efficient bifunctional catalyst for furfural acetalization. The removal of interlayer water leads to shrinkage of Ni-Fe HTLCs particles and increase in electronic repulsion among NO3- ions in the interlayer. The weak acid sites in Ni-Fe HTLCs play an important role in furfural acetalization. The dehydration changes structure of the acid sites and thus improves activity of the weak acid sites. The dehydrated Ni-Fe HTLCs can absorb the most of the resulting water during furfural acetalization, but the structure of Ni-Fe HTLCs cannot completely recover after rehydration possibly due to hindering effect of organic molecules diffusing into interlayer space.
Mn-Based Coordination Polymer: Facile Synthesis, Structure and Application in Glucose Electrochemical Sensing
Lu ZHAO, Tong-Dan CHEN, Han-Ye WANG, Chen-Xi LI, Jiang LI
2021, 37(11): 2101-2112  doi: 10.11862/CJIC.2021.237
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Utilizing the rigid 6-(3-pyridyl) isophthalic acid (H2PIAD) linker, one Mn(Ⅱ)-based coordination polymer {[Mn(PIAD)(DMF)]·H2O}n (1) was prepared firstly. In order to improve the electrocatalytic activity of glucose sensing, a composite material (Ag@1) was prepared by the strategy of post synthesis of Ag nanoparticles (NPs). The electrocatalytic performance of the glassy carbon electrode (GCE) modified by Ag@1 was evaluated by chronoamperometry method at the optimized application potential, and coordination polymer 1 provided a fixed substrate for the uniform distribution of Ag NPs on its surface. Ag@1 sensor can maximize the electrocatalytic synergistic effect of the combination of Ag and 1 on glucose oxidation. The results reveal that modified GCE by Ag@1 had good performance for the detection of glucose with low detection limit (6.36 μmol·L-1), good selectivity and sensitivity (166.71 μA·L·mmol-1·cm-2).
论文
自支撑多孔碳/硒复合柔性电极的制备及其电化学性能
杨淳, 赵欣悦, 张灵志
2021, 37(11): 1922-1930  doi: 10.11862/CJIC.2021.242
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以二氧化硅(SiO2)为模板,结合静电纺丝与溶胶-凝胶法制备了多孔碳纳米纤维膜(PCNFS),再通过熔融扩散法负载硒,制备了一种柔性的碳/硒复合电极(Se@PCNFS)。结合X射线衍射(XRD)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对材料的微观结构和形貌进行表征,结果显示多孔碳纤维直径约300 nm,硒均匀地嵌入碳纤维膜的孔洞中。电化学测试结果表明,1Se@PCNFS电极在锂硒电池中表现出优异的循环性能和倍率性能。在0.5C倍率下,初始放电比容量达到569 mAh·g-1,循环500次后比容量为340 mAh·g-1;在2C倍率时,比容量为403 mAh·g-1
同构MOFs复合氧化石墨烯电极材料构筑高性能超级电容器
籍文娟, 王丹, 王国娇, 孙秀玲, 付云龙
2021, 37(11): 1931-1942  doi: 10.11862/CJIC.2021.241
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在水热条件下一步自组装合成系列同构X-MOF(X6O(TATB)4(H+2·(H2O)8·(DMF)2,X=Zn、Co、Ni;H3TATB=4,4',4″-s-triazine-2,4,6-triyl-tribenzoic acid;DMF=NN-二甲基甲酰胺)和氧化石墨烯(GO)的复合材料(X-MOF@GO),并探究其作为超级电容器电极材料的电化学性能。通过X射线粉末衍射、X射线光电子能谱和扫描电子显微镜测试证明GO和MOFs复合成功。其中,性能最优的Ni-MOFs@1.5GO(GO的添加量为1.5 mL)的比电容高达694.8 F·g-1(0.5 A·g-1),约是Ni-MOF的2倍。电化学测试结果表明:复合材料X-MOF@1.0GO较其原MOF表现出更大的比电容和更好的倍率性能。在3.5 A·g-1的电流密度下,1 000次循环充放电后,Ni-MOFs@1.0GO仍保持初始比电容量的81.2%。与活性炭(AC)组装的非对称超级电容器Ni-MOF@1.5GO//AC的性能最优,其功率密度为754.3 W·kg-1时,能量密度为15.4 Wh·kg-1,且循环3 000次后比电容保持率约为70.0%,显示出较长的循环寿命。
松针状NiCo2O4@碳布复合材料在锂硫电池中的应用
杨小兰, 吴忠辉, 张亚军, 何欣健, 贾金柱, 杨雄智, 周俊丽
2021, 37(11): 1943-1949  doi: 10.11862/CJIC.2021.222
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以碳布(CC)作为柔性基底,采用水热法在其表面原位生长松针状网络结构NiCo2O4,制得NiCo2O4@CC复合材料,并应用于锂硫电池。NiCo2O4在碳纤维表面竖直生长形成三维纳米针簇网络,为硫的存储提供更多的空间,有效缓解硫电极的体积膨胀。通过吸附实验,证明了NiCo2O4@CC能有效吸附多硫化物,从而抑制多硫化物的穿梭效应。与CC/S相比(933 mAh·g-1),NiCo2O4@CC/S复合材料用于锂硫电池具有更优异的电池性能,在0.1C下初始放电比容量高达1 467 mAh·g-1,在0.2C下初始放电比容量为1 098 mAh·g-1,经200次循环后,放电比容量仍然保持在879 mAh·g-1,平均每圈衰减率为0.09%,表现出良好的循环性能。
1,4-二氮杂二环[2.2.2]辛烷-氰基合钴(Ⅲ)三维框架氢键型晶体的合成、相变及介电性质
徐慧婷, 刘洋, 秦刘磊, 齐欢欢, 刘尊奇
2021, 37(11): 1950-1960  doi: 10.11862/CJIC.2021.218
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室温下以1,4-二氮杂二环[2.2.2]辛烷(Dabco)和钴氰酸为原料、水和甲醇为混合溶剂,以缓慢蒸发的方式获得Dabco-氰基合钴氢键型框架晶体材料(H3O)(H2Dabco)[Co(CN)6]·H2O(1)。并通过单晶X射线衍射、红外光谱、元素分析、粉末X射线衍射、热重分析、差示扫描量热、变温-变频介电常数测试对其结构、热性能与电性能进行表征。在低温(100 K)与室温(296 K)下,化合物均为单斜晶系P21/c空间群。单晶结构显示氰基合钴阴离子、水分子与水合质子在晶体内部通过氢键的相互作用形成三维网状框架,质子化的(H2Dabco)2+阳离子镶嵌在其中构成分子马达型囊状结构。随着温度的升高(H2Dabco)2+阳离子发生弹簧式扭转,从而引发晶体在254 K附近相变,在相同温度下沿着晶体的3个轴向发生介电异常,呈现明显的介电各向异性。
Ag@硅氧倍半聚合物的合成及其对对硝基苯酚的催化还原性能
吴洪花, 祖凤华, 付山, 董晓龙, 李素云, 义建军, 郝海军, 徐庆红
2021, 37(11): 1961-1969  doi: 10.11862/CJIC.2021.225
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以氨丙基三乙氧基硅烷和草酰氯为原料,合成得到链上含亚氨基和羰基官能团的硅氧倍半聚合物。以此聚合物为载体,通过配位吸附和还原得到银纳米粒子(平均粒径约为15 nm)高度分散于硅氧烷聚合物表面的复合物。研究结果表明,复合物中银负载量(质量分数)约为13.66%,在水溶液中25℃、6 min内可将对硝基苯酚(4-NP)完全催化还原为对氨基苯酚(4-AP),且7次循环使用后依然保持95%以上的催化活性。在常温常压条件下,催化剂的最高活性达到33.0 g4-AP·gAg-1,表现出优异的催化还原性能。
介孔调控Co9S8/Ni3S2复合电极材料及电催化析氢性能
周琦, 黎新宝, 焦孙治
2021, 37(11): 1970-1980  doi: 10.11862/CJIC.2021.223
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利用快速凝固结合化学脱铝模板法制备前驱体纳米多孔Ni-Co合金,再经气相沉积硫和热氢还原制备纳米多孔Co9S8/Ni3S2复合电极材料。研究表明,通过气相沉积,硫原子与Ni-Co合金原位生成CoS2/NiS2复合相,再经过热氢还原后,形成硫原子比例较低的Co9S8/Ni3S2复合相。该热氢还原过程不仅提高了Co9S8/Ni3S2各元素周围的电子密度,而且在其表面调制出有介孔结构的异质界面,进而提高其电子传输能力并增大活性比表面积。相比于其他同条件下制备的Ni、Co硫化物,Co9S8/Ni3S2拥有更佳的析氢反应(HER)活性,在50 mA·cm-2的电流密度下,Co9S8/Ni3S2的HER过电位为234 mV,Tafel斜率为106 mV·dec-1,经稳定性测试后,电压变化仅为14 mV。
双功能化磁性纳米修复剂对多重金属的快速、高效钝化行为
梁静, 韩露, 李宝, 时珍珠, 刘星驰, 彭李超, 邹雪艳
2021, 37(11): 1981-1990  doi: 10.11862/CJIC.2021.243
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采用“一锅法”制备了四氧化三铁/半胱氨酸(Fe3O4/Cys)磁性纳米微球,随后对Fe3O4/Cys进行亚氨基二乙酸(IDA)修饰得到Fe3O4/Cys/IDA磁性双功能化纳米微球。研究发现Fe3O4/Cys中的L-Cys是通过—SH基团接枝到Fe3O4表面的,随后IDA分子中的羧基与Fe3O4/Cys中的—NH2形成酰胺键,最终形成多支链多羧基的Fe3O4/Cys/IDA磁性纳米修复剂。基于修复剂表面短支链-长支链交替的多羧基结构,实现了羧基基团的高密度接枝。同时,Fe3O4/Cys/IDA磁性纳米微球对Pb2+、Cd2+、Cu2+、Co2+、Ni2+、Zn2+为专性吸附,而对Hg2+属于非专性吸附,且吸附重金属后得到的钝化产物均表现了良好的稳定性。另外,Fe3O4/Cys/IDA对重金属离子的吸附符合Langmuir模型,属于单层均相吸附,其吸附过程符合准二级动力学模型,最大吸附量为49.05 mg·g-1
肿瘤靶向Pt-Cu基纳米平台用于近红外二区光声成像引导的光热治疗
郑子良, 曲波涛, 杨晓荣, 刘玲, 张瑞平
2021, 37(11): 1991-2001  doi: 10.11862/CJIC.2021.238
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基于层层(LBL)自组装技术,在Pt-Cu纳米合金表面依次包覆带正电的聚赖氨酸(PLL)和带负电的透明质酸(HA),成功构筑Pt-Cu@PLL@HA纳米平台。HA不仅延长了纳米平台血液循环时间,还可实现肿瘤主动靶向作用,提升肿瘤部位富集效果。在肿瘤区域透明质酸酶(HAase)作用下HA快速降解,释放Pt-Cu@PLL(+)颗粒,有利于肿瘤细胞特异性摄取。基于Pt-Cu合金良好的近红外二区(NIR-Ⅱ)吸收性能,实现了NIR-Ⅱ光声成像引导的NIR-Ⅱ光热高效抗肿瘤效果。
碳纸负载碳酸氢镍纳米颗粒的无酶葡萄糖电化学传感器
李恳恳, 王松磊, 罗瑞明, 马亮, 刘丽, 魏培媛, 张也
2021, 37(11): 2002-2010  doi: 10.11862/CJIC.2021.239
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通过一步水热法在碳纸上原位生长碳酸氢镍纳米颗粒,利用粉末X射线衍射和扫描电子显微镜对材料的结构及形貌进行表征,发现碳纸上负载纯相Ni(HCO32时具有较多的催化活性位点,利于葡萄糖的催化氧化反应进行。循环伏安法和时间-电流响应曲线表明该电极的检测限为0.98 μmol·L-1,线性范围为2.95~1.02 mmol·L-1,灵敏度为935 μA·L·mmol-1·cm-2,同时具有优异的选择性及稳定性。此外,该传感器能够实现对乳制品中葡萄糖的快速检测。这些结果表明,过渡金属和导电基底的协同作用会增强复合材料整体的导电性能和催化性能。
室温快速合成一种钴基金属有机框架材料纳米颗粒用于高效氧析出
贾宏男, 姚娜, 丛恒将
2021, 37(11): 2011-2019  doi: 10.11862/CJIC.2021.233
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采用一种在室温下快速、温和的方法制备Co-MOF-74纳米颗粒,该纳米颗粒结晶度好、形貌均匀,可在碱性介质中实现高效电催化析氧反应(OER)。相较于传统的水热合成法,通过引入三乙胺大大降低了合成所需时间,只需室温下搅拌2 h即可得到Co-MOF-74纳米颗粒(约20 nm)。该纳米催化剂呈现出更高的比表面积(760 m2·g-1)、良好的OER活性和稳定性,在10 mA·cm-2的电流密度下过电势仅为275 mV。
二硫化锡纳米片阻变存储器的制备与性能
赵婷, 坚佳莹, 董芃凡, 冯浩, 南亚新, 常芳娥
2021, 37(11): 2020-2028  doi: 10.11862/CJIC.2021.235
[摘要]  (39) [HTML全文] (39) [PDF 12766KB] (0)
摘要:
采用水热法合成了尺寸为50~100 nm的二硫化锡纳米片,并首次以二硫化锡作为阻变层材料的阻变存储器(Cu/PMMA/SnS2/Ag,PMMA=聚甲基丙烯酸甲酯),对其阻变性能进行了研究。结果表明:Cu/PMMA/SnS2/Ag阻变存储器的开关比约105,耐受性2.7×103。在上述2项性能指标达到较优水平的同时,开态与关态电压分别仅约为0.28与-0.19 V。
钴、碳共掺杂氮化碳的制备及其光催化分解水产氢性能
郑富凯, 李宗霖, 曹煜祺, 张慧, 曹鑫, 孙建华
2021, 37(11): 2029-2036  doi: 10.11862/CJIC.2021.226
[摘要]  (32) [HTML全文] (32) [PDF 22332KB] (0)
摘要:
针对氮化碳可见光利用率低和在光催化过程中光生电子与空穴易于复合的缺点,通过钴、碳共掺杂提升其光催化性能。以尿素为前驱体,维生素B12(VB12)为钴源和碳源,将二者的混合物进行一步煅烧,制备钴、碳共掺杂氮化碳(CNCoC)。结果表明,钴、碳共掺杂对氮化碳的微观形貌、骨架结构和官能团都没有造成明显影响;但是增大了产物的比表面积,调节了产物的能带结构,增加了其对可见光的吸收。更重要的是,相比于单一元素碳的掺杂,钴、碳共掺杂具有协同作用,能够更有效地提升光生电子和空穴的分离和传递效率。因此,加入6 mg VB12制备的CNCoC-6的可见光光催化分解水产氢速率达到了56.1 μmol·h-1,是纯氮化碳(CN)的3.05倍;而碳掺杂氮化碳(CNC-6)的产氢速率仅为CN的2.55倍。
Si掺杂调控15-冠-5配位Li+机理的理论研究
梁苏卓成, 姬国勋, 孙新利, 李国东, 张仕通
2021, 37(11): 2037-2046  doi: 10.11862/CJIC.2021.236
[摘要]  (37) [HTML全文] (37) [PDF 5075KB] (1)
摘要:
基于密度泛函理论研究了以—SiMe2—SiMe2—单元或—CH2—SiMe2—单元取代—CH2—CH2—的方式调控15-冠-5配位Li+性能的机理。结果表明掺杂Si能够增大冠醚的尺寸,并且通过不同的掺杂方式可以有效增强/减弱冠醚配位Li+的能力。分子中的原子(AIM)理论的电子密度拓扑分析和对称匹配微扰理论(SAPT)能量分解分析表明,冠醚与Li+的相互作用本质为伴随少量轨道极化和电子转移的离子-偶极相互作用。由于Si的电子比C更容易被O和Li+极化,因此Si掺杂能够增强冠醚-Li+之间的静电相互作用和诱导相互作用,但自然布居分析表明,若掺杂之后冠醚环内存在Si—O—Si单元,整体上将使O难以充分极化Si的电子,同时导致带正电的Si与Li+距离更近,因此不利于冠醚配位Li+
综述
铋基纳米材料在癌症成像诊断与治疗中的应用
刘应兵, 于文生, 王进贤, 董相廷, 付振东, 刘桂霞
2021, 37(1): 1-15  doi: 10.11862/CJIC.2021.013
[摘要]  (826) [HTML全文] (826) [PDF 44132KB] (826)
摘要:
随着纳米医学的快速发展,纳米诊疗材料因其兼具诊断和治疗等多功能性而受到越来越多的关注。铋(Bi)基纳米材料具有优异的光学、电学和磁学性质,在肿瘤的诊疗一体化领域具有广阔的应用前景。我们总结了Bi基纳米材料常用的构建方法,重点介绍了其在计算机断层扫描(CT)成像、光声(PA)成像、放射疗法(RT)、光热疗法(PTT)及协同作用方面的应用研究进展,并对其未来发展进行了总结和展望。
论文
混合熔盐法低温合成Sm2Ti2S2O5及其光催化分解水产氢
晁明坤, 马贵军
2021, 37(1): 16-22  doi: 10.11862/CJIC.2021.006
[摘要]  (402) [HTML全文] (402) [PDF 6750KB] (402)
摘要:
以TiO2、TiS2及Sm2O3为前驱体,分别加入LiCl-KCl与LiCl-CsCl的最低共熔混合物作为熔盐,在较低温度下成功合成了Sm2Ti2S2O5(STSO)颗粒。通过对比不同温度下所制备产物的X射线衍射图,首次表明STSO的热力学结晶温度在520℃左右,远低于之前报道的650℃的最低合成温度。扫描电子显微镜照片显示,采用2种混合熔盐制备的STSO都呈片状形貌;同一合成温度下,采用LiCl-CsCl熔盐制备的STSO的厚度小于LiCl-KCl所得产物。采用出射光波长大于420 nm的氙灯作为光源,在含有Na2S-Na2SO3空穴牺牲剂的溶液中,所制备的STSO颗粒表现出最高35 μmol·h-1的光催化分解水产氢活性以及20 h以上的产氢稳定性。
盐酸氯丙嗪对八肋游仆虫中心蛋白C端功能的抑制
董倩, 叶旭文, 杨静, 王文明, 赵亚琴, 杨斌盛
2021, 37(1): 23-32  doi: 10.11862/CJIC.2021.019
[摘要]  (377) [HTML全文] (377) [PDF 7248KB] (377)
摘要:
通过荧光光谱分析、等温滴定量热(ITC)、圆二色谱(CD)、电泳等技术研究了盐酸氯丙嗪(CPZ)和八肋游仆虫中心蛋白C端(apoC-EoCen)的结合以及CPZ对蛋白功能的影响。结果表明,在室温下10 mmol·L-1 Hepes溶液(pH=7.4)中,CPZ与apoC-EoCen以物质的量之比为1:1结合,条件结合常数约为104L·mol-1。CPZ的结合导致蛋白质的二级结构发生改变,α螺旋含量减小;对金属离子诱导中心蛋白的聚集产生了抑制作用,Tb3+敏化荧光强度也降低;阻碍了中心蛋白与着色性病干皮病C组蛋白(XPC)的结合;且影响了apoC-EoCen类核酸酶活性,导致蛋白对pBR322 DNA的切割能力下降;抑制了蛋白质的磷酸化。综合实验结果表明盐酸氯丙嗪是中心蛋白的生物功能阻断剂,对中心蛋白的功能具有良好的调控作用。
以2-(2-吡啶基)苯并噻吩为主配体的两种蓝紫光二价铂配合物的合成与性质
王登强, 陈宇, 刘小庆, 卞健健, 尹新颖, 滕明瑜, 戎梅竹, 汪正良
2021, 37(1): 33-38  doi: 10.11862/CJIC.2021.012
[摘要]  (402) [HTML全文] (402) [PDF 1954KB] (402)
摘要:
以2-(2-吡啶基)苯并噻吩(2-(2-pyridyl)benzothiophene,btp)作为主配体,分别以邻二氮菲[1, 10]并咪唑联苯酚(2-(1H-imidazo[4,5-f][1, 10]phenanthrolin-2-yl)phenol,ipap)和3-甲基-6-苯基咪唑[2,1-b]噻唑(3-Methyl-6-phenylimidazo[2,1-b]thiazole,mpmt)作为辅助配体,成功合成了2个二价铂配合物[(btp)Pt(ipap)]Cl与(btp)Pt(mpmt)Cl,并得到了配合物(btp)Pt(mpmt)Cl的晶体结构。由金属-配体电荷转移引起的2种配合物发光,具有60%左右的内量子效率,发射峰在426 nm(蓝色)与381 nm(紫色)处。HOMO/LUMO轨道能级分别为-4.69 eV/-2.55 eV与-4.80 eV/-2.21 eV。单晶衍射结果表明,较低的共轭程度导致了该类配合物的短波长发射。
溶胶-凝胶法制备Fe掺杂MgF2催化剂及其催化1,1-二氟乙烷(R152a)脱HF反应的性能
张蕾, 李雨臻, 李利春, 韩文锋, 李瑛, 唐浩东
2021, 37(1): 39-46  doi: 10.11862/CJIC.2021.021
[摘要]  (387) [HTML全文] (387) [PDF 10307KB] (387)
摘要:
通过助剂掺杂的方法解决MgF2催化剂高温失活的问题。采用溶胶-凝胶法制备了一系列Fe3+掺杂的高比表面MgF2催化剂,并通过N2吸附-脱附测试、X射线衍射(XRD)、能量色散X射线光谱(EDS)和NH3程序升温脱附技术(NH3-TPD)、电子自旋共振(ESR)、X射线光电子能谱(XPS)等对FeF3/MgF2催化剂的物化性质进行了表征。结果表明,一定量(物质的量分数小于20%)的Fe3+掺杂可以有效地减少MgF2晶粒度,且随着Fe3+掺杂量的增加,催化剂的比表面积、酸性及1,1-二氟乙烷(R152a,C2H4F2)脱HF反应的催化活性均呈现增加趋势,但当Fe3+掺杂量超过20%时,催化剂明显失活。
三维α-MnO2@Co3O4异质材料的制备、表征及其催化性能
刘恒发, 谢钰, 刘琪, 程高, 孙明, 余林
2021, 37(1): 47-54  doi: 10.11862/CJIC.2021.003
[摘要]  (458) [HTML全文] (458) [PDF 17321KB] (458)
摘要:
α-MnO2纳米线为基底,原位生长ZIF-67,再经焙烧转化为三维α-MnO2@Co3O4异质材料,并用于甲苯的催化燃烧反应。结果表明:粒径大小约为12 nm的Co3O4纳米颗粒均匀生长在MnO2纳米线外表面,形成异质界面。该复合材料的低温可还原性能更佳,具有更多的表面活性氧物种。相比于α-MnO2纳米线,α-MnO2@Co3O4表现出更佳的甲苯催化燃烧性能:起燃温度(转化率10%)T10为202℃,完全燃烧温度(转化率90%)T90为235℃。
复合催化剂α-(Fe,Cu)OOH/RGO的制备、表征及其协同H2O2在可见光下去除环丙沙星性能
许俊鸽, 洪俊贤, 胡蝶
2021, 37(1): 55-64  doi: 10.11862/CJIC.2021.008
[摘要]  (384) [HTML全文] (384) [PDF 7674KB] (384)
摘要:
采用一步回流法制备了α-(Fe,Cu)OOH/RGO复合催化剂,通过粉末X射线衍射、扫描电子显微镜和X射线光电子能谱等对催化剂进行了表征,并以30 mg·L-1的环丙沙星(CIP)为目标污染物,研究了不同制备条件下所得催化剂在可见光照射下协同H2O2对CIP的去除效果。结果表明,成功实现了α-(Fe,Cu)OOH纳米棒在石墨烯二维薄片上原位生长,α-(Fe,Cu)OOH/RGO复合材料的可见光吸收边发生红移,禁带宽度从2.02 eV变为1.76 eV。石墨烯复合不但增强了对污染物的吸附能力,而且加快了光生电子的分离、迁移速率,还提高了反应体系中电子的传导效率。当石墨烯复合比例(质量分数)为1%时,复合催化剂的催化性能最佳。当催化剂投加量为0.40 g·L-1,H2O2浓度为0.10 mol·L-1时,反应120 min,CIP被全部去除。α-(Fe,Cu)OOH/RGO循环使用5次,对CIP的去除率均在90%以上,表明催化剂具有较强的催化活性和较好的稳定性。
巯基/羧基修饰硅藻土及其对Pb(Ⅱ)、Cd(Ⅱ)的吸附性能
杜玉成, 李生辉, 谷恒学, 李杨, 吴俊书, 靳翠鑫
2021, 37(1): 65-73  doi: 10.11862/CJIC.2021.025
[摘要]  (456) [HTML全文] (456) [PDF 20944KB] (456)
摘要:
以3-巯基丙基三甲氧基硅烷(MPTS)、3-氨基丙基三乙氧基硅烷(APTES)、柠檬酸(CA)为原料,采用水浴法、水浴/低温水热法,分别制备了巯基(—SH)、氨基/羧基(—NH2/—COOH)表面修饰的硅藻土。采用傅里叶变换红外光谱、扫描电子显微镜、氮气吸附-脱附测试、热重/差示扫描量热法、X射线光电子能谱等技术对样品进行了表征,并探讨分析了样品制备机理。当重金属离子溶液pH=7,吸附时间为4 h时,以MPTS制备的巯基修饰硅藻土吸附剂对Pb(Ⅱ)、Cd(Ⅱ)的最大吸附容量分别为396、365 mg·g-1;以APTES、CA制备的氨基/羧基缩合修饰硅藻土吸附剂对Pb(Ⅱ)、Cd(Ⅱ)最大吸附容量分别为485、462 mg·g-1
三元混配铜(Ⅱ)配合物的晶体结构、DNA作用及其生物活性
蔡戴宏, 莫慧雯, 何良, 乐学义
2021, 37(1): 74-84  doi: 10.11862/CJIC.2021.026
[摘要]  (462) [HTML全文] (462) [PDF 12348KB] (462)
摘要:
利用溶剂缓慢挥发法合成了以5-氯-2-(2'-吡啶基)苯并咪唑为主配体、L-苯丙氨酸根为辅助配体的三元混配铜(Ⅱ)配合物:[Cu(HPBC)(L-Phe)(H2O)]ClO4(简称为1,HPBC=5-氯-2-(2'-吡啶基)苯并咪唑,L-Phe=L-苯丙氨酸根)。采用元素分析、红外光谱、紫外可见光谱、摩尔电导率测定和电喷雾质谱等手段对配合物1进行了表征,利用X射线单晶衍射确定配合物具有五配位的变形四方锥构型,并通过电子吸收光谱、荧光光谱、粘度测定及分子对接等方法揭示了配合物主要以插入作用的方式与小牛胸腺DNA(CT-DNA)结合。配合物对被测微生物(李斯特菌、金黄色葡萄球菌和大肠杆菌)及癌细胞(SGC-7901、Bel-7402、HeLa和A549)显示出良好的抗菌和细胞毒活性(IC50=1.69~2.50 μmol·L-1)。最重要的是,通过确定细胞的形态变化(AO/EB双染法)及细胞周期测定分析,揭示了配合物1通过DNA结合的途径诱导SGC-7901细胞凋亡。
基于1D/0D有序复合SnO2纳米晶的钙钛矿太阳能电池
刘德政, 杨高元, 向文灏, 王松, 李望南, 钟杰, 黄福志, 陈美华, 梁桂杰
2021, 37(1): 85-94  doi: 10.11862/CJIC.2021.005
[摘要]  (548) [HTML全文] (548) [PDF 14795KB] (548)
摘要:
通过水热前驱体中的功能添加剂调控一维(1D)纳米棒阵列疏密度,继而在纳米棒间隙沉积零维(0D)纳米颗粒,制备1D/0D有序的复合SnO2电子传输层(ETL),并组装高效、稳定的钙钛矿太阳能电池。系统研究前驱体中NaCl添加剂以及后续纳米颗粒的沉积对复合ETL的形貌结构、光谱性能及界面电荷过程的作用规律,探讨上述作用对电池光电性能的影响机制。前驱体中NaCl的加入使棒密度变小,从而使0D纳米颗粒顺利渗透到1D纳米棒间隙中,其对钙钛矿/ETL和钙钛矿/FTO界面复合的抑制作用是造成器件开路电压和填充因子增大的原因。在经2 mL饱和NaCl水溶液改性的1D电子传输层ETL-2Cl的基础上,继续沉积0D的纳米颗粒,制备得到新型1D/0D复合电子传输层ETL-2P,后者优良的电荷复合抑制作用(复合电阻是ETL-2Cl的2.9倍)和高效的电子抽提性能(抽提速率3.03×107 s-1,抽提效率91.6%)促成了电池较优的光电性能(光电效率12.15%)。
Mn、Mg共掺杂Ni(OH)2的电化学性能
姚寿广, 窦飞, 刘顿, 程杰
2021, 37(1): 95-102  doi: 10.11862/CJIC.2021.014
[摘要]  (479) [HTML全文] (479) [PDF 14927KB] (479)
摘要:
采用缓冲溶液法制备复合掺杂Mn、Mg的正极材料Ni0.82Mn0.18-xMgx(OH)2(x=0.06、0.09、0.12)。采用XRD、XPS和SEM等测试表征材料的晶体结构、锰价态和形貌,采用循环伏安和恒流充放电测试研究Mn、Mg不同掺杂比例对氢氧化镍电化学性能的影响。结果表明,Mn、Mg掺杂样品均为β相,晶粒细化;Ni0.82Mn0.09Mg0.09(OH)2样品具有优异的电极反应可逆性和充放电性能,100 mA·g-1电流密度下的放电比容量(290.6 mAh·g-1)优于商用β-Ni(OH)2(281.1 mAh·g-1);且500 mA·g-1电流密度下循环30圈后,Ni0.82Mn0.09Mg0.09(OH)2的放电比容量未见衰减,其循环稳定性优于商用β-Ni(OH)2
铬-对苯二甲酸MOF的框架异构:MIL-88B(Cr)和MIL-101(Cr)
赵田, 朱和鑫, 董茗, 赵熠
2021, 37(1): 103-109  doi: 10.11862/CJIC.2021.018
[摘要]  (663) [HTML全文] (663) [PDF 14335KB] (663)
摘要:
可以通过简单地控制乙酸浓度的方法,在相似的水热合成条件下合成2种同一家族的金属有机框架材料(MOFs):MIL-88B(Cr)和MIL-101(Cr)。在相对较低的乙酸浓度下,可以得到平均粒径为100 nm的MIL-101(Cr),并拥有很高的BET比表面积(3 543 m2·g-1)。而在相对较高的乙酸浓度下,则可得到另一种具有“呼吸”特性结构的MOF——MIL-88B(Cr)。利用粉末X射线衍射、扫描电镜、N2吸附-脱附分析、热重分析等对它们的结构、形貌、孔隙率等性质做了详细的分析。
高镍系正极材料LiNi0.88Co0.07Al0.05O2的制备及性能表征
罗京, 刘建雄, 黄玲, 肖方明, 李文超, 唐仁衡, 王英
2021, 37(1): 110-120  doi: 10.11862/CJIC.2021.010
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摘要:
以镍钴氢氧化物为原料,采用异丙醇铝水解法合成Ni0.88Co0.07Al0.05(OH)2,将前驱体与锂源充分混合,通过3种烧结条件制备出球形LiNi0.88Co0.07Al0.05O2正极材料,借助X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、X射线光电子能谱(XPS)以及电化学测试等表征手段对材料的晶体结构、微观形貌和电化学性能进行了较系统的研究。研究表明,在500℃下保温3 h、700℃下保温14 h的条件下合成的LiNi0.88Co0.07Al0.05O2具有良好的综合电化学性能,0.2C放电比容量达192.2 mAh·g-1,首次充放电效率为81.6%,1C放电比容量为190.7 mAh·g-1,100周后放电比容量为141.1 mAh·g-1,容量保持率达到73.4%。
Articles
Preparation, Structures and Thermal Stabilities of Four Transition Metal Complexes Constructed by 3, 7-Di(3-pyridyl)-1, 5-dioxa-3, 7-diazacyclooctane Bipyridine Ligand
Li LI
2021, 37(1): 121-130  doi: 10.11862/CJIC.2021.009
[摘要]  (337) [HTML全文] (337) [PDF 5547KB] (337)
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Four transition metal complexes, [Co(NO3) (H2O)2(L)2]NO3 (1), [Co2Cl4(L)2] ·CH2Cl2 (2), [Cd2(AcO)4(L)2] ·4CH3OH (3) and[Cd2(NO3)2(CH3OH)2(H2O)2(L)2](NO3)2·2H2O (4), were synthesized by employing a clamplike bipyridine ligand 3, 7-di(3-pyridyl)-1, 5-dioxa-3, 7-diazacyclooctane (L). Single-crystal X-ray analysis reveals that complex 1 is mononuclear structure; 2 is macrocyclic dimer; wheras 3 and 4 are rectangular dinuclear structures. The ligand molecules in these complexes has shown three types of coordination mode including mono-dentate, trans-bridge and cis-bridge. All of the complexes were also characterized by elemental analysis, IR, thermal stabilities and singlecrystal structure analysis.CCDC: 940778, 1; 915840, 2; 1446573, 3; 1446574, 4.
Reviews
Ni(OH)2 with Super-Small Nanoscale: Synthesis and Application in Li+ Adsorptions
Nan JING, An-Nan ZHOU, Guo-Hui WANG, Run-Wei WANG, Qing-Hong XU
2021, 37(1): 131-139  doi: 10.11862/CJIC.2021.015
[摘要]  (477) [HTML全文] (477) [PDF 13885KB] (477)
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α-Ni(OH)2 nanoparticles with 5 nm average diameter were prepared under the existence of glucose in water solution, and the size of α-Ni(OH)2 nanoparticles was found to be controlled by the concentration of glucose. A possible mechanism of the preparation process was proposed. When the synthesis was processed without existence of the glucose, β-Ni(OH)2 was obtained. The super-small α-Ni(OH)2 nanoparticles showed strong adsorption ability to Li+ ions when pH value of the solution was about 7.0 under room temperature. Maximum adsorption capacity of the super-small α-Ni(OH)2 nanoparticles to Li+ was about 214 mg·g-1; however, the β-Ni(OH)2 with diameter above 1.0 μm was low than 30 mg·g-1. Freundlich equation analysis and SEM images of the adsorption products indicate multilayers' adsorption process to Li+ of α-Ni(OH)2 nanoparticles.
Dynamic Formation of Pdδ+-Fe2+ Interface Promoting Reverse Water Gas Shift Reaction over Pd/FeOx Catalyst
Dian-Yu ZHANG, Fang LIU, Peng-Fei DU, Meng-Wei LI, Zhao-Xuan WU, Yi-Bing FENG, Yang ZHAO, Xiao-Yan XU, Xin-Xing ZHANG, Jun-Ling LU, Bing YANG
2021, 37(1): 140-150  doi: 10.11862/CJIC.2021.002
[摘要]  (469) [HTML全文] (469) [PDF 5116KB] (469)
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We systematically investigated Pd/FeOx for the reverse water gas shift (RWGS) reaction using a combination of ex situ and in situ characterizations, including transmission electron microscopy (TEM), Fourier-transform infrared (FTIR) spectroscopy, temperature-programmed desorption/reduction/oxidation (TPD/TPR/TPO), and X-ray photoelectron spectroscopy (XPS). A highly dispersed Pd/FeOx catalyst was synthesized using Pd(acac)2 as the precursor. The catalyst exhibited high activity, with CO2 conversion of ~29% and CO selectivity ogreater than 98% at 400℃, which are among the highest values in the literature. Moreover, Pd/SiO2 and Pd-Fe/SiO2 were further studied to determine the significant role of the Pd-FeOx interface in promoting the RWGS reaction. Semi-in situ XPS revealed the dynamic formation of Pdδ+-Fe2+ species at the Pd-FeOx interface; the species acted as highly active sites for CO2 dissociation. Our results also showed the formation of the Pdδ+-Fe2+ interface during the RWGS reaction remarkably enhanced the activity and selectivity of the Pd-FeOx catalyst for the reaction, benefiting CO2 adsorption, C=O dissociation, and CO desorption.
Aluminum Amine Compound Protected by β-Diketiminate Ligand: Preparation and Enhanced Performance as Catalyst for Ring-Opening Polymerization of ε-Caprolactone
Wen-Ling LI, Ben YAN, Chen-Guang SUN, Qiu-Miao SHEN, Wen-Qing LIU, Xiao-Li MA, Zhi YANG
2021, 37(1): 151-156  doi: 10.11862/CJIC.2021.007
[摘要]  (436) [HTML全文] (436) [PDF 1005KB] (436)
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An aluminum amine compound (L)AlH(NMe2) (L=HC(C(Me)NAr)2, Ar=2, 6-iPr2C6H3) (1) protected by steric β-diketiminate ligand L has been synthesized successfully. A two-step synthesis method was employed to prepare the aluminum amine (L)AlH(NMe2) compound. The aluminum amine compound (L)AlH(NMe2) was identified via NMR spectroscopy, elemental analysis, infrared diffuse reflectance spectroscopy and X-ray single crystal diffraction analysis. The aluminum amine compound containing both Al-NMe2 and Al-H substitutes showed excellent catalytic performance on the ring-opening polymerization of ε-caprolactone. The molecular weight and molecular weight distribution of the resultant polycaprolactone were determined by high performance gel penetration chromatography.
Easy Preparation of N-Doped Graphene-like Nanosheets as Excellent Metal-Free Cathodic Electrocatalysts of Zn-Air Battery
Xiao-Kun YANG, A-Ling CHEN, Qing-Feng YI
2021, 37(1): 157-170  doi: 10.11862/CJIC.2021.001
[摘要]  (426) [HTML全文] (426) [PDF 25953KB] (426)
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Carbon-based materials have been paid much attention due to their own good electroactivity and resources availability. Herein, we reported a simple and versatile synthesis strategy for the preparation of nitrogen-doped and metal-free carbon catalysts with excellent oxygen reduction reaction (ORR) electroactivity. Using dicyandiamide (DCD) as nitrogen source and sucrose, β-cyclodextrin and chitosan as different carbon sources, N-doped graphene-like nanosheet samples CN-nanosh(suc), CN-nanosh(cyc) and CN-nanosh(ch) were prepared by an easy pyrolysis of their mixture. The samples exhibited outstanding ORR electroactivity in alkaline media with a comparable performance to the benchmark Pt/C. Alkaline Zn-air battery with the prepared sample CN-nanosh(suc) as the cathodic catalyst displayed the maximum power density of 201.33 mW·cm-2, and its discharge time can last for more than 50 h at a constant current density of 100 mA·cm-2, which is close to the optimum values of the similar Zn-air battery with the metal-free cathodic electrocatalysts reported so far.
Electrodeposition of NiS on CoNi2S4 for Flexible Solid-State Asymmetric Supercapacitors
Ye-Zeng HE, Hou-Qiang ZHAO, Peng LIU, Yan-Wei SUI, Fu-Xiang WEI, Ji-Qiu QI, Qing-Kun MENG, Yao-Jian REN, Dong-Dong ZHUANG
2021, 37(1): 171-179  doi: 10.11862/CJIC.2021.011
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An effective approach of depositing NiS on CoNi2S4 was adopted to improve the performance of bimetallic cobalt/nickel-sulfide. The as-obtained CoNi2S4@NiS had an excellent specific capacitance of 1 433 F·g-1 at 1 A·g-1 and shows a superior rate performance of 69.6% at 10 A·g-1. A flexible solid-state asymmetric supercapacitor assembled with CoNi2S4@NiS and the reduced graphene oxide showed a high energy density of 36.6 Wh·kg-1 at a power density of 800 W·kg-1 and had a fantastic cycle performance of 78.7% retention after 10 000 cycles, indicating that the CoNi2S4@NiS nanocomposite is a promising electrode material for energy storage devices.
Preparation and in Vitro Experiment of Attapulgite-based Microgels with Magnetic/Temperature Dual Sensitivities
Tian-Le LI, Hui ZHONG, Xiao-Rong LI, Jing ZHOU, Yi-Xin LIU, Wei-Cheng HU, Zhi-Peng CHENG, Cheng YAO
2021, 37(1): 180-188  doi: 10.11862/CJIC.2021.017
[摘要]  (458) [HTML全文] (458) [PDF 11509KB] (458)
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The folic acid (FA)-grafted magnetic FA-Fe3O4/ATP-P(NIPAM-AAM) composite microgels (attapulgite=ATP, N-isopropyl acrylamide=NIPAM, acrylamide=AAM) were prepared via a method of emulsion copolymerization. The as-prepared microgels were characterized by X-ray diffraction (XRD), vibrating sample magnetometer (VSM), thermogravimetric analysis (TG), infrared spectroscopy (IR), UV-visible spectroscopy (UV), scanning electron microscope (SEM) and transmission electron microscope (TEM). The dynamic light scattering (DLS) results show that the low critical solution temperature (LCST) of microgel was about 38.5℃. The drug delivery ability of the as-prepared microgels was evaluated by using doxorubicin hydrochloride (DOX) as the model drug. Based on the drug loading and releasing results, the presence of ATP increased the amount of drug loading and releasing. Compared with free DOX, the in vitro cytotoxicity of DOX loaded FA-Fe3O4/ATP-P(NIPAM-AAM) was decreased and the biocompatibility was improved. Those results indicate that the microgels of FA-Fe3O4/ATP-P(NIPAM-AAM) can be used in potential as a slow-release drug system. The in vitro cellular uptake test revealed that the microgels of FA-Fe3O4/ATP-P(NIPAM-AAM) at the assigned site were significantly richer than that of other sites. This result indicates that the microgels of FA-Fe3O4/ATP-P(NIPAM-AAM) composite are targeting and expectable in the application of targeted drug releasing.
Errata
Correction to "Direct Observation of Magnetic Transitions in a Nickel(Ⅱ) Complex with Large Anisotropy"
N. Widener Chelsea, N. Bone Alexandria, Ozerov Mykhaylo, Richardson Rachael, Zheng-Guang LU, Thirunavukkuarasu Komalavalli, Smirnov Dmitry, Xue-Tai CHEN, Zi-Ling XUE
2021, 37(1): 189-189  doi: 10.11862/CJIC.2021.040
[摘要]  (348) [HTML全文] (348) [PDF 4212KB] (348)
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