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1,1'-二羟基-5,5'-联四唑的镧系金属配合物的合成、表征及热行为
罗利琼, 王从军, 沈娟, 金波, 彭汝芳
2021, 37(9): 1529-1535  doi: 10.11862/CJIC.2021.168
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以1,1'-二羟基-5,5'-联四唑(H2BTO)为配体,镧系金属离子作为金属中心,采用溶剂热法制备了5种金属配合物:[La2(BTO)3(H2O)8]·2H2O (1)、[Ce2(BTO)3(H2O)8]·2H2O (2)、[Pr2(BTO)3(H2O)8]·2H2O (3)、[Sm2(BTO)3(H2O)8]·2H2O (4)和[Nd2(BTO)3(DMF)4]·6H2O (5)。通过单晶X射线衍射和元素分析对5种配合物的结构进行了表征。结果表明,5种配合物均属于单斜晶系,P21/n空间群。利用差示扫描量热法研究了配合物1~4的热稳定性,采用Kissinger法和Ozawa法分别计算了其热分解动力学参数。
Ru催化N2与H2反应合成氨的两态反应机理
吴晶晶, 王永成, 康娟霞
2021, 37(9): 1536-1546  doi: 10.11862/CJIC.2021.184
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采用密度泛函理论(DFT) UB3LYP方法对Ru在单重态、三重态及五重态势能面上催化N2与H2反应合成氨的两态反应机理进行理论研究,发现该反应为典型的两态反应。计算得到最低能量交叉点(MECP)处自旋-轨道耦合常数(Hsoc)及双程系间窜越几率(PISC),MECP1:Hsoc=508.34 cm-1P2ISC=0.85,MECP9:Hsoc=269.21 cm-1P2ISC=0.27。运用能量跨度模型(energetic span model)确定Ru催化合成氨反应的转化频率(TOF)决速过渡态(TDTS)为3TS2-3,TOF决速中间体(TDI)为3IM9。
基于硝基咪唑衍生物的Cu(Ⅱ)、Ag(Ⅰ)配合物的合成、晶体结构及生物活性
杨莉宁, 刘春叶, 成昭, 梁玲玲, 张剑
2021, 37(9): 1547-1554  doi: 10.11862/CJIC.2021.186
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设计、合成了硝基咪唑衍生物NN'-二甲基-5-硝基-2,2'-联咪唑(L)的过渡金属配合物[Cu (L)(Ac)2]2(1)和[Ag (L)(NO3)]·H2O (2)。X射线单晶衍射分析表明配合物1是一个醋酸根桥联的五配位双核Cu(Ⅱ)浆轮笼型配合物。通过元素分析、紫外光谱、红外光谱、固体荧光光谱、电喷雾质谱、摩尔电导率及热重分析等测试手段对配合物2进行了性质表征,初步确定了其结构可能为二配位的线型单核配合物。紫外可见光谱、荧光光谱及黏度法分析表明配合物1与小牛胸腺DNA (ct-DNA)相互作用强于配体及配合物2。以2倍稀释法研究了配体L及配合物的抗厌氧菌活性,发现配体对伴放线放线杆菌(ATCC 29523)的抑菌活性最强(最低抑菌浓度MIC=0.625~1.25 μg·mL-1),这甚至要强于经典抗厌氧菌药物甲硝唑的抗菌性。
荧光/MRI双模态靶向成像诊疗试剂的制备
陈庆涛, 石向东, 梁娓娓, 姜利英, 方少明, 陈凤华
2021, 37(9): 1555-1562  doi: 10.11862/CJIC.2021.181
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在聚乙二醇二胺(NH2-PEG-NH2)修饰的石墨烯量子点(GODs)表面以酰胺键偶联二乙基三胺五乙酸(DTPA)分子,之后将Gd3+离子与其进行配合,得到了GODs-Gd (DTPA)复合纳米粒子,然后再通过酰胺键在GODs-Gd (DTPA)的表面修饰叶酸(FA)靶分子,最后进一步将阿霉素(DOX)通过π-π堆垛吸附在造影剂的表面,制备了FA/GODs-Gd (DTPA)/DOX荧光/MRI双模态靶向肺癌细胞成像诊疗试剂,通过透射电子显微镜、紫外可见吸收光谱、荧光光谱和激光共聚焦扫描显微镜等手段表征了其形貌、发光性能和靶向成像性能。MRI、激光共聚焦扫描显微镜和MTT等结果表明,相对于正常的HLF细胞,所制备的FA/GODs-Gd (DTPA)/DOX纳米粒子能够靶向检测FA受体高表达的肺癌H460细胞,并具有明显的抗肿瘤活性。
温度对三元正极材料前驱体Ni0.65Co0.1Mn0.25(OH)2理化特性的影响
张坤, 薛晓斐, 许开华, 马琳, 李聪
2021, 37(9): 1563-1570  doi: 10.11862/CJIC.2021.191
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以类球形的Ni0.65Co0.10Mn0.25(OH)2前驱体为研究对象,系统地研究了处理温度对该前驱体的比表面积、形貌、粒径、金属含量等理化指标的影响规律。通过X射线衍射、热重、X射线光电子能谱等检测手段揭示了高温处理过程中前驱体物相演变行为、热稳定性以及过渡金属元素的价态变化规律。
ZnIn2S4/TiO2/Ag复合光催化剂的制备及分解水制氢性能
王兰, 史航, 张欢, 陈绮欣, 金宝丹, 张宏忠
2021, 37(9): 1571-1578  doi: 10.11862/CJIC.2021.187
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首先采用溶剂热法将1D TiO2纳米带均匀地穿插到片层结构组装而成的3D ZnIn2S4微球中,所形成的异质结构能有效抑制光生电子-空穴对。其次利用光沉积法将0D Ag纳米粒子负载在3D ZnIn2S4/1D TiO2异质结构上。得益于0D Ag纳米粒子的等离子体效应及电子助催化剂作用,三元3D ZnIn2S4/1D TiO2/0D Ag复合光催化剂在分解水制氢方面表现出优异的性能。在模拟太阳光照射下,ZnIn2S4/TiO2/Ag复合光催化剂的产氢速率达到715 μmol·g-1·h-1,相对于ZnIn2S4/TiO2、ZnIn2S4/P25、ZnIn2S4、TiO2和P25分别提高了2.7倍、3.3倍、3.8倍、184倍和518倍。同时借助于X射线衍射、扫描电子和透射电子显微镜、X射线光电子能谱和紫外可见漫反射光谱等表征手段进一步论证了复合催化剂的优异性能。
Co-Co9S8/N掺杂科琴黑复合材料的制备及其氧还原反应催化性能
李福枝, 陈真, 张丹, 孙翱魁, 石璞, 贺全国
2021, 37(9): 1579-1588  doi: 10.11862/CJIC.2021.180
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采用普鲁士蓝类似物作为前驱体,结合高温煅烧,制备了高导电碳(氮掺杂科琴黑)支撑、单金属引入的Co-Co9S8/N-KB氧还原反应(ORR)催化剂。研究了煅烧温度对ORR催化性能的影响。结果发现,在800℃下进行煅烧,所得催化剂的ORR催化活性最大,其起始电位和半波电位分别为0.93和0.83 V,与商业级Pt/C相当,并且极限电流密度高达5.7 mA·cm-2。该催化剂的稳定性也十分优异,经过10 000 s长时间持续催化后电流密度还能保持初始值的95.6%;在0.5~1.0 V之间进行5 000次循环的加速老化实验之后,其半波电位仅偏移了8.6 mV。此外,在铝-空气全电池应用中,在50 mA·cm-2的放电电流密度下,Co-Co9S8/N-KB催化剂的放电电压可达1.53 V,高于商业级Pt/C。
Cu/MoS2的熔盐电解法制备及其在碱性条件下析氢反应性能的提高
王子鸣, 卢雅宁, 唐梦, 张爽, 王英财, 张志宾, 刘云海, 柳玉辉
2021, 37(9): 1589-1596  doi: 10.11862/CJIC.2021.197
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通过熔盐电解法并掺杂过渡金属Cu制备2种不同纳米结构的Cu/MoS2。采用涂敷法制备工作电极,通过X射线衍射(XRD)、透射电子显微镜(TEM)、能量散射X射线谱(EDS)、扫描电子显微镜(SEM)、选区电子衍射(SAED)以及各种电化学手段验证了其结构和性能。结果表明,纳米片状Cu/MoS2在碱性溶液(1 mol·L-1 KOH)中表现出优异的析氢催化性能:在电流密度为10 mA·cm-2时过电位为199.6 mV,Tafel斜率为59 mV·dec-1,双电层电容为26.1 mF·cm-2,等效电荷转移电阻为12.4 Ω,具有较为良好的电化学耐久性和稳定性。
大环芳烃菲咯啉的设计、合成及其铜光敏剂光解水制氢性能
许萌, 俞晓聪, 刘雪粉, 陈浩, 范金轩, 王天琦, 吴庆安, 罗书平
2021, 37(9): 1597-1605  doi: 10.11862/CJIC.2021.188
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设计、合成了一类4,7位为大环芳烃的菲咯啉二齿氮配体,可与铜(Ⅰ)和Xantphos原位配位,获得一系列新型氮磷杂配铜光敏剂CuPS 1~CuPS 6,在均相光解水制氢体系中研究其光敏活性及构效关系。实验结果表明,在菲咯啉4,7位引入芳基有利于提高其光敏活性,1-萘基取代的CuPS 3有最好的制氢活性,光解水制氢转化数(TON)达957。通过理论计算对比分析,1-萘基取代基与菲咯啉母核具有较大的二面角,对铜配合物的激发态有较好的保护作用,因此CuPS 3表现出较高的荧光量子产率(0.036)和较长的激发态寿命(1.36 μs)。
介孔碳-碳纳米管-硫化铜复合材料对电极的制备及其在量子点敏化太阳能电池中的应用
刘南松, 嵇小荷, 张华
2021, 37(9): 1606-1612  doi: 10.11862/CJIC.2021.176
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首先研究了介孔碳(MC)、碳纳米管(CNT)和不同MC/CNT质量比(mMC/mCNT)制备的MC-CNT二元复合材料对电极的光电转换效率(PCE),进一步加入预先水热合成的CuS纳米材料,制备出MC-CNT-CuS三元复合材料对电极,同时探讨了CuS添加量和膜厚对对电极PCE的影响。实验结果表明,当mMC/mCNT=3/2时,2种碳材料能最大程度地发挥协同作用,使电池性能最好,PCE达12.69%。再加入0.4 g CuS时PCE可进一步提高,且对电极印刷5层时最优,此时所组装的电池获得的PCE最高(13.18%)。
稻壳基高纯度NaP1沸石的制备及其庚烷异构性能评价
张洋, 崔艳红, 马守涛, 张微, 魏媛媛, 所艳华
2021, 37(9): 1613-1624  doi: 10.11862/CJIC.2021.192
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以稻壳为硅源采用煅烧-水热法合成NaP1沸石,考察了不同硅铝比(nSiO2/nAl2O3)、水钠比(nH2O/nNa2O)、晶化温度、晶化时间对沸石结晶度的影响,并以其为载体制备x% Ni/NaP1(x%为Ni与NaP1的质量比)型烷烃异构催化剂。采用X射线衍射、红外光谱、扫描电子显微镜、透射电子显微镜-X射线能谱、N2气吸附-脱附、X射线光电子能谱、NH3程序升温脱附、差热分析表征手段对合成材料的晶体结构、微观形貌和金属分散性等进行分析,研究了金属镍掺杂对NaP1酸性和热稳定性能的影响。结果表明以稻壳为硅源制备的NaP1沸石的最佳合成条件为水钠比为35、硅铝比为10、晶化温度为95℃、晶化时间为12 h,此时NaP1晶体的结晶度为99.38%。在以正庚烷异构反应为探针的实验中,4% Ni/NaP1的催化性能最佳,在还原温度400℃、还原时间4 h、重时空速3.52 h-1、反应温度为320℃的条件下,收率最大为46.41%,对正庚烷转化率和选择性分别为65.49%和70.86%。
沸石配位阳离子对Pd/H-ZSM-5催化剂加氢性能的影响
张传浩, 路宁悦, 范彬彬, 李瑞丰
2021, 37(9): 1625-1632  doi: 10.11862/CJIC.2021.185
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选用商业多级孔NH4-ZSM-5和H-ZSM-5(NH4-ZSM-5在550℃空气气氛中焙烧6 h)沸石为载体,H2PdCl4为金属前驱物,采用常规浸渍法制备了Pd/H-ZSM-5负载催化剂。利用X射线衍射、扫描电子显微镜、N2吸附-脱附、紫外可见光谱、X射线光电子能谱、氨气-程序升温脱附和透射电子显微镜等手段对所制备催化剂的物化性质进行详细表征,并对Pd/H-ZSM-5的萘加氢催化性能进行了考察。结果表明,ZSM-5载体上配位的NH4+的存在不仅有利于负载金属Pd物种的分散,使Pd在NH4-ZSM-5载体上具有较高的分散度,而且所制备的Pd/H-ZSM-5(NH4)较Pd/H-ZSM-5(H)具有更多的酸位。Pd/H-ZSM-5(NH4)在萘加氢反应中表现出比Pd/H-ZSM-5(H)更优异的催化性能。
Ni2P@CoP3核壳纳米球的制备、表征及其用于超级电容器性能
汪明, 蔡园园, 杨艺, 祝典, 张娜娜, 汪美芳, 李祥子
2021, 37(9): 1633-1641  doi: 10.11862/CJIC.2021.194
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利用水热技术先后获得Ni纳米球和Ni@Co(OH)2海胆状核壳纳米球前驱体,通过高温煅烧法获得NiO@CoO核壳纳米球,再以次磷酸钠为原料,通过高温磷化法最终获得Ni2P@CoP3核壳纳米球。利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、高角度环形暗场像扫描透射电子显微镜(HAADF-STEM)、X射线粉末衍射仪(XRD)、能谱仪(EDS)及X射线光电子能谱(XPS)对产物的形貌、结构和组成进行表征。采用循环伏安(CV)、恒电流充放电(GCD)以及循环稳定性实验探索了电极材料的电化学性能。结果表明,Ni2P@CoP3核壳纳米球的直径约为400 nm,由六方系Ni2P纳米核和立方相CoP3纳米壳构成。相比单纯的Ni2P或CoP3纳米球,Ni2P@CoP3核壳纳米球发挥了复合结构的协同效应,更加有利于电解液的质子传递,促进了赝电容反应,表现出更高的比容量、稳定性和更长的循环寿命。
铜卟啉金属有机框架材料用于高性能锂硫电池
万思成, 熊冰清, 潘园园, 邱常鼎, 柯福生
2021, 37(9): 1642-1648  doi: 10.11862/CJIC.2021.125
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利用卟啉配体与金属离子的配位特性,通过后修饰将铜离子与卟啉基金属有机框架材料(PCN-222)配位,得到铜卟啉金属有机框架材料(PCN-222-Cu),并首次用于锂硫电池。借助紫外可见光谱(UV-Vis)、粉末X射线衍射(PXRD)、N2吸附-脱附测试、扫描电子显微镜(SEM)、循环伏安(CV)和恒电流充放电测试等表征手段对材料的晶相结构、形貌和电化学性能进行了系统的研究。其中UV-Vis结果表明,Cu2+与卟啉环成功配位。电化学测试结果表明,负载硫的PCN-222-Cu(S-in-PCN-222-Cu)电极在1C的倍率下循环300周后可逆比容量为840 mAh·g-1。当倍率提高到3C时,循环800周后的容量仍保持430 mAh·g-1,每周容量衰减率为0.042%。S-in-PCN-222-Cu电极的电化学性能远优于S-in-PCN-222,说明配体上的Cu2+与卟啉环的协同作用能有效降低电化学极化,从而显著提升卟啉基金属有机框架材料用作硫载体的电化学性能和循环稳定性。
水洗和回烧工艺对高镍三元材料LiNi0.88Co0.07Al0.05O2微观结构及电化学性能的影响
毛贵洪, 肖方明, 唐仁衡, 黄玲, 李坚, 王英
2021, 37(9): 1649-1658  doi: 10.11862/CJIC.2021.196
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以镍钴氢氧化物、异丙醇铝为原料,采用水解法合成三元前驱体Ni0.88Co0.07Al0.05(OH)2,再与锂盐混合烧结得到正极材料LiNi0.88Co0.07Al0.05O2,最后经过水洗和回烧得到目标产物,并借助X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)、能量色散X射线谱(EDS)和恒电流充放电测试等对样品的晶体结构、微观形貌、元素价态以及电化学性能进行表征。研究表明,料液比1∶25、水洗3次、600℃回烧2 h合成的LiNi0.88Co0.07Al0.05O2具有较优的综合电化学性能,其在0.2C的放电比容量达207.6 mAh·g-1,首次充放电效率为84.8%,1C放电比容量为192.0 mAh·g-1,循环100周后,材料的放电比容量仍有148.0 mAh·g-1,容量保持率达到77.1%。
基于(E)-N, N-二甲基-4-(2-(吡啶-4-基)乙烯基)苯胺的锌/镉有机-无机杂化金属卤化物的结构和发光性质
王申宇, 陈典, 刘晓莉, 王硕文, 苑亚南, 王振平, 杨春
2021, 37(9): 1659-1664  doi: 10.11862/CJIC.2022.198
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摘要:
以(E)-N, N-二甲基-4-(2-(吡啶-4-基)乙烯基)苯胺(EDPVA)为有机源,以金属卤化物ZnX2和CdX2为无机源,用相应的浓酸HX(X=Cl、Br)提供酸性介质,通过溶剂缓慢挥发法得到了4个离子型单核有机-无机杂化金属卤化物(H2EDPVA)[ZnCl4](1)、(H2EDPVA)[ZnBr4](2)、(H2EDPVA)[CdCl4](3)和(H2EDPVA)[CdBr4](4)。X射线单晶衍射分析表明,交替排列的刚性有机阳离子(H2EDPVA)2+和稍微扭曲的四面体形无机阴离子[MX4]2-(M=Zn、Cd;X=Cl、Br)之间存在静电作用和氢键。发光性质研究表明,化合物1~4的蓝色磷光峰分别位于459、446、440和434 nm,斯托克斯位移分别为79、72、61和55 nm,半峰宽分别为100、88、87和100 nm,发光寿命τ分别为0.47、8.38、18.38和11.62 μs。发光机理分析表明:化合物1~4的磷光发射是有机阳离子和无机阴离子协同作用的结果。
二茂铁基-双酮锌配合物的合成、电化学活性及多光子吸收
解清园, 李丹, 李丹丹, 李胜利, 吴杰颖, 张琼, 田玉鹏
2021, 37(9): 1665-1673  doi: 10.11862/CJIC.2021.183
[摘要]  (12) [HTML全文] (12) [PDF 9533KB] (1)
摘要:
合成了具有推-拉电子(D-A)构型的二茂铁基双酮配体(L)及配合物(NHEt3)[Zn(L)3]。晶体结构分析表明,二茂铁双酮脱去一个质子,以烯醇式与Zn2+配位,得到-1价的二茂铁双酮基锌配合物。循环伏安和原位红外电化学方法研究发现,(NHEt3)[Zn(L)3]发生了两步氧化和一步还原过程:随着氧化过程中电位的增加,其中1个二茂铁(Fc)配体被氧化成Fc+,形成D-A不对称结构模式;随着氧化的继续,2个Fc配体也被氧化,3个Fc+与锌中心仍成D-A结构模式,最后将Fc+一步还原成Fc。理论计算结果表明,配合物的电子离域程度高,有利于电荷流动。非线性光学实验结果显示,该配合物在近红外区具有大的双/三光子吸收效应和三阶非线性光学极化率。
Articles
First-Principles Calculations on Electronic Structures and Optical Properties of g-C3N4 Nanoribbons
Xiu-Juan DU, Ke-Rong MA, Zheng-Wei ZHANG, Wen YANG, Rui ZHANG, Qing-Mei ZHANG
2021, 37(9): 1674-1682  doi: 10.11862/CJIC.2021.178
[摘要]  (8) [HTML全文] (8) [PDF 10637KB] (0)
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The first-principles method based on density functional theory was performed to investigate the electronic structure and optical properties of the armchair nanoribbons (AC-g-C3N4NRs) and zigzag g-C3N4 nanoribbons (ZZ-g-C3N4Rs). The results show that the edge H atoms of AC-g-C3N4NRs and ZZ-g-C3N4NRs can exist stably. The valence band maximums (VBMs) of AC-g-C3N4NRs are mainly contributed by most of N atoms, whereas the VBMs of ZZ-g-C3N4NRs are contributed by the N atoms near the CH edge. The conduction band minimums (CBMs) of AC-g-C3N4Rs mainly belong to C and N atoms near the one edge or two edges of AC-g-C3N4NRs, while the CBMs of ZZ-g-C3N4Rs mainly belong to C and N atoms near the NH edge of ZZ-g-C3N4NRs. The absorption coefficient and the reflectivity of AC-g-C3N4NR or ZZ-g-C3N4NR increased with the increasing width of the corresponding nanoribbon. An obvious blueshift phenomenon of the absorption coefficient could be generated in the low-energy range as the width of AC-g-C3N4NR increased.
Preparation and Nonlinear Absorption Properties of SiO2@CdTe@Au Composite Nanoparticles
Qing CHANG, Jing GUAN, Tian-Ming MENG
2021, 37(9): 1683-1690  doi: 10.11862/CJIC.2021.195
[摘要]  (8) [HTML全文] (8) [PDF 12017KB] (1)
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SiO2@CdTe@Au nanocomposites were prepared by using SiO2 nanoparticles, CdTe quantum dots and Au nanoparticles as raw materials by layer-by-layer adsorption. The samples were tested and characterized to show the successful preparation of nanocomposites. The Z-scan technique was used to measure the nonlinear absorption optical properties of SiO2@CdTe and SiO2@CdTe@Au nanocomposite samples under nanosecond laser pulses. The analysis of the experimental results showed that SiO2@CdTe and SiO2@CdTe@Au nanocomposites all exhibited saturated absorption properties. SiO2@CdTe@Au nanocomposite presented enhanced nonlinear optical characteristics compared to SiO2@CdTe nanocomposite, and the mechanism was analyzed.
Synthesis, Structure, Luminescence, Photocatalytic and Magnetic Properties of a Neodymium Complex Constructed from Biphenyl-3, 4', 5-tricarboxylic Acid
Huan ZHENG, Yuan JIAO, Si-Si FENG
2021, 37(9): 1691-1699  doi: 10.11862/CJIC.2021.193
[摘要]  (13) [HTML全文] (13) [PDF 6641KB] (0)
摘要:
A Nd3+ MOF, namely {[Nd(bpt)(DMF)(H2O)]·2H2O}n (1) (H3bpt=biphenyl-3, 4', 5-tricarboxylic acid, DMF=N, N-dimethylformamide), has been obtained by the self-assemble reaction of NdCl3·6H2O and H3bpt ligand under solvothermal conditions (DMF/H2O). Complex 1 was characterized by means of elemental analysis, infrared spectroscopy, powder X-ray diffraction and single-crystal X-ray diffraction analyses. Single-crystal X-ray structural analysis reveals that complex 1 displays three-dimensional frameworks featuring a (5, 5)-connected topological network with the point symbol of 44·63·83)(48 62). In addition, the thermal stability, luminescent properties, photocatalytic behaviour, and magnetic property of complex 1 were also investigated in detail in the solid state.
Effect of Zn on Photocatalytic Activity of Block-Shaped Monoclinic WO3
Zhong-Lian XIAO, Xuan-Yi WU, He-Yun TAN, Aprea Paolo, Shi-You HAO
2021, 37(9): 1700-1706  doi: 10.11862/CJIC.2021.189
[摘要]  (9) [HTML全文] (9) [PDF 4291KB] (0)
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Zn-doped block-shaped monoclinic WO3 composite (Zn-doped WO3) was synthesized via a facile method and the photocatalytic activity of rhodamine B (RhB) over Zn-doped WO3 was evaluated. The prepared samples were characterized by X-ray diffraction, Raman spectrum, scanning electron micrograph, UV-Vis diffuse reflection spectrum, Fourier transform infrared spectrum, and X-ray photoelectron spectrum and other techniques, and the results showed that the block-shaped monoclinic WO3 did not be changed by appropriate amount of Zn doping. The photo-catalytic results illustrated that mass ratio of 5% Zn doped WO3 performed the best photocatalytic efficiency due to the formation of more oxygen vacancy and the increase of hydroxyl groups number.
Coexistence of Two Unique Cu(Ⅱ) Ions in Mononuclear Cu(Ⅱ) Complexes with Furanyl Substituted Triaryltriazoles
Jian-Fei GAO, Rong-Rong NIE, Zhe FENG, Dun-Ru ZHU
2021, 37(9): 1707-1712  doi: 10.11862/CJIC.2021.190
[摘要]  (17) [HTML全文] (17) [PDF 2973KB] (0)
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Two new mononuclear Cu(Ⅱ) complexes, trans-[Cu(L1)2(NO3)2]0.5[Cu(L1)2(H2O)2]0.5(NO3) (1) and trans-[Cu(L2)2(NO3)2]0.5[Cu(L2)2(H2O)2]0.5(NO32CH3OH (2) (L1=3-(2-pyridyl)-4-phenyl-5-(2-furanyl)-1, 2, 4-triazole, L2=3-(2-pyridyl) -4-(p-fluorophenyl)-5-(2-furanyl)-1, 2, 4-triazole), were synthesized and characterized by FT-IR, elemental analyses, thermogravimetric analyses, single-crystal X-ray crystallography and powder X-ray diffraction. Both complexes 1 and 2 crystallize in triclinic system with space group P1. The crystal structure analysis shows that there are two crys-tallographically different Cu(Ⅱ) ions in 1 and 2 and each Cu(Ⅱ) ion lies in a distorted octahedral[CuN4O2] environment. However, in the axial position one Cu(Ⅱ) ion is coordinated with two water molecules, while another Cu(Ⅱ) ion with two nitrate ions. The L1 or L2 ligand coordinates with Cu(Ⅱ) via one pyridine N atom and one triazole N atom, while the furanyl group does not participate in coordination. In 1 and 2 there are some intermolecular C-H…N, C-H…O, O-H…O hydrogen bonding and C-H…π interactions, linking the mononuclear complex (1 or 2) to form a two-dimensional network.
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]  (655) [HTML全文] (655) [PDF 44132KB] (655)
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]  (309) [HTML全文] (309) [PDF 6750KB] (309)
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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]  (283) [HTML全文] (283) [PDF 7248KB] (283)
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]  (299) [HTML全文] (299) [PDF 1954KB] (299)
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]  (288) [HTML全文] (288) [PDF 10307KB] (288)
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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]  (322) [HTML全文] (322) [PDF 17321KB] (322)
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]  (299) [HTML全文] (299) [PDF 7674KB] (299)
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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]  (323) [HTML全文] (323) [PDF 20944KB] (323)
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]  (349) [HTML全文] (349) [PDF 12348KB] (349)
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]  (375) [HTML全文] (375) [PDF 14795KB] (375)
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]  (364) [HTML全文] (364) [PDF 14927KB] (364)
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]  (444) [HTML全文] (444) [PDF 14335KB] (444)
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
[摘要]  (365) [HTML全文] (365) [PDF 46310KB] (365)
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]  (252) [HTML全文] (252) [PDF 5547KB] (252)
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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]  (346) [HTML全文] (346) [PDF 13885KB] (346)
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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]  (343) [HTML全文] (343) [PDF 5116KB] (343)
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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]  (329) [HTML全文] (329) [PDF 1005KB] (329)
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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]  (308) [HTML全文] (308) [PDF 25953KB] (308)
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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
[摘要]  (398) [HTML全文] (398) [PDF 23788KB] (398)
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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]  (331) [HTML全文] (331) [PDF 11509KB] (331)
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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]  (268) [HTML全文] (268) [PDF 4212KB] (268)
摘要: