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Effect of Crystallinity and Grain Size of Film on Mobility of C60 Thin Film Transistors
Yi LI, Xiao HAN, Zhi-Peng SUN, Yan-Wen MA
2018, 34(3): 415-420  doi: 10.11862/CJIC.2018.076
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摘要:
Fullerene (C60) thin films have been prepared on SiO2 substrates by vacuum deposition under different substrate temperature ranging from 30 to 190℃ and deposition pressure of 1×10-4 and 1×10-1 Pa. The effect of crystallinity and grain size on the mobility of the deposited C60 thin films are investigated. X-ray diffraction and atomic force microscopy observation indicates that both the crystallinity and the grain size of the C60 films increase with increasing substrate temperature. And the grain size of the films increase and the crystallinity keep almost unchanged with increasing deposition pressure. Field-effect measurements indicate that the mobilities of the C60 thin films are closely correlated with their crystallinities, and the increased crystallinity of the films gives the improved mobility. Different from the films of planar organic semiconducrors molecules, for the spherical C60 molecules films, the larger grain size could lead to the lower mobility.
Penta-nuclear Mixed-Valence Co(Ⅱ/Ⅲ) and 1D Chain Cu(Ⅱ) Complexes Incorporating Schiff Base Ligand with End-On Azido Bridging: Syntheses, Structures and Magnetic Properties
Ju-Mei TIAN, Jing-Ping ZHANG
2018, 34(3): 436-444  doi: 10.11862/CJIC.2018.053
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Two novel complexes, [CoCo4(salhn)4(N3)6(CH3OH)2(H2O)2]·4CH3OH·2H2O (1) and[Cu2(salhn)(N3)2]n (2) (H2salhn=N, N'-bis(salicylidene)hydrazine), were synthesized and structurally characterized by X-ray single-crystal diffraction. Complex 1 is a zigzag-like penta-nuclear[CoCo4] cobalt cluster, while complex 2 consists of a 1D chain containing subunit[Cu2(salhn)(N3)2]. Both complexes possess bridged azide with the end-on (EO, μ-1, 1) coordination fashion. The magnetic measurements indicate that 1 and 2 both show antiferromagnetic behaviors.
Syntheses, Crystal Structures and Theoretical Calculation of Three-Dimensional Supramolecular Zinc/Manganese Complex
Zhi-Tao WANG, Valtchev Valentin, Qian-Rong FANG, Xiu-Mei LI, Ya-Ru PAN
2018, 34(3): 515-524  doi: 10.11862/CJIC.2018.038
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Two new three-dimensional supramolecular complexes {[Zn2(pzdc)(L)2(H2O)]·H2O}n (1) and[Mn(μ2-O)(H2O)2(HL)]·NIPH (2) (H2pzdc=pyrazine-2, 3-dicarboxylic acid, H2NIPH=5-nitroisophthalic acid, HL=3-(2-pyridyl)pyrazole) have been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectrum, UV spectrum, TG, fluorescence spectrum, single-crystal and powder X-ray diffraction. Complex 1 shows two-dimensional (2D) network, and complex 2 is zero-dimensional structure. They are further extended into a three-dimensional supramolecular network structure through hydrogen bonds and π-π interactions. Moreover, natural bond orbital (NBO) was analyzed by using the PBE0/LANL2DZ method built in Gaussian 09 program. The calculation results indicate the distinct covalent interaction between the coordinated atoms and Zn(Ⅱ), Mn(Ⅱ) ion, respectively.
Two Trinuclear Cobalt(Ⅱ) Salamo-Type Complexes: Syntheses, Crystal Structures, Solvent Effect and Fluorescent Properties
Li WANG, Quan-Peng KANG, Jing HAO, Yang ZHANG, Yang BAI, Wen-Kui DONG
2018, 34(3): 525-533  doi: 10.11862/CJIC.2018.035
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Two trinuclear Co(Ⅱ) complexes, [Co3L(OAc)2(CH3CH2OH)2]·2CH3CH2OH·2CHCl3 (1) and[Co3L(OAc)2(C3H7OH)2] (2) were synthesized by the reaction of a new Salamo-type bisoxime chelating ligand of 4, 4'-dinitro-2, 2'-(1, 2-ethylenedioxybis(nitrilomethylidyne))diphenol (H2L) with cobalt(Ⅱ) acetate tetrahydrate in different solvents. Complexes 1 and 2 were characterized by elemental analyses, IR and UV-Vis spectra, and single crystal X-ray diffraction methods. In complexes 1 and 2, there are two ligand L2- moieties (which provide N2O2 donors), two acetate ions, two coordinated ethanol or n-propanol molecules, respectively. Although the two complexes were synthesized in different solvents, it is worthwhile that the Co(Ⅱ) ions in the structures of the two complexes adopt slightly distorted hexa-coordinated geometries. As a result, solvent effect was assumed to have played a crucial role in their coordination environment. In addition, when excited at 450 nm, the complexes 1 and 2 show an intense photoluminescence with maximum emission at ca. 568 and 566 nm, respectively.
Li(Ⅰ)/Na(Ⅰ) Complexes and Perchlorate Salt of 2-(5-Chloroquinolin-8-yloxy)-1-(pyrrolidin-1-yl)ethanone: Syntheses, Crystal Structures and Fluorescence Properties
Pan-Dong MAO, Wei-Na WU, Miao YANG, Qing-Wen YANG, Yuan WANG
2018, 34(3): 534-538  doi: 10.11862/CJIC.2018.087
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摘要:
Two complexes, [Li(L)2]ClO4 (1) and[Na(L)2]ClO4 (2) based on L (L=2-(5-chloroquinolin-8-yloxy)-1-(pyrrolidin-1-yl)ethanone) were synthesized and characterized by the X-ray diffraction analyses. The results show that complex 1 was isostructural with 2. The metal ion in each complex with a distorted octahedron geometry is surrounded by two acetamide ligands with N2O4 donor set. In addition, the structure of the perchlorate salt of L, namely (HL)ClO4·H2O was demonstrated. The fluorescence properties of all compounds have been investigated in detail.
Two Lead(Ⅱ)-Organic Coordination Polymers Based on N-Acetic-5-oxygen-nicotinic Acid: Syntheses, Structures and Fluorescence Properties
Yun-Xia LI, Yan XIA, Ling-Zhi LÜ, Yun-Long FENG
2018, 34(3): 539-544  doi: 10.11862/CJIC.2018.058
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Two new lead coordination polymers, namely, [Pb4(μ3-O)2L2]n (1), [Pb3(μ4-O)2L]n (2) (H2L=N-acetic-5-oxygen-nicotinic acid) have been prepared by the reaction of Pb(NO3)2 with H2L and characterized by elemental analysis, IR and single crystal X-ray diffraction. Polymer 1 crystallizes in the monoclinic C2/c space group, and features[Pb4(μ3-O)2]n rigid inorganic chains, which are further linked by L2- ligands to form a 3D framework. Polymer 2 crystallizes in the orthorhombic P212121 space group, and displays a 3D framework with[Pb3(μ4-O)2]n inorganic chains. The thermodynamic stability and fluorescence properties of 2 were investigated.
Two Mono- and Binuclear Zn(Ⅱ) Coordination Complexes Containing 4-Pyridyl-NH-1, 2, 3-triazole Ligand: Syntheses, Structures and Photoluminescence Properties
Xue LEI, Yun-Zhou CHEN, Yuan-Xiang LI, Li-Hui JIA, Yun-Feng CHEN
2018, 34(3): 545-550  doi: 10.11862/CJIC.2018.060
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Two Zn(Ⅱ) coordination complexes, [Zn2(L)2Cl4] (1) and[Zn(L)2Cl2]·2H2O (2) (L=4-pyridiyl-NH-1, 2, 3-triazole) are synthesized by reaction of ZnCl2·2H2O with rigid ligand L. Single crystal diffraction reveals that 1 and 2 crystallizes in space groups, P1 and P21/n, respectively. In the structures of 1 and 2, supramolecular interactions play important role in forming 3D structures. Photoluminescent properties of 1 and 2 in solid state and dilute methanolic solutions have been investigated in detail.
Synthesis of CuNPs@Cu(Ⅱ)-AMTD Metal-Organic Gel Composites with High Catalytic Activities
Yong CHENG, Fei-Fei SUN, Qi-Chun FENG, Ying-Hua ZHOU
2018, 34(3): 551-559  doi: 10.11862/CJIC.2018.059
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The CuNPs@Cu(Ⅱ)-AMTD metal-organic gel composites was prepared by in situ growth of copper nanoparticles within gel matrix. The resulting material has been characterized by IR, SPR, SEM, TEM, EDX and XPS. It was found that CuNPs@Cu(Ⅱ)-AMTD composites exhibit excellent catalytic activities on the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) and other nitroarenes by NaBH4 in aqueous solution. The mechanism of the catalytic reaction has also been discussed.
Structural Differences of Two MOFs Adjusted by Central Metal Ions Inducing Different Photodegradation Efficiencies
Hui-Jun LI, Ya-Ling HE, Ning ZHANG, Qing-Qing LI, Zhou-Qing XU, Yuan WANG
2018, 34(3): 560-568  doi: 10.11862/CJIC.2018.078
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By Reactions of Cu(Ⅱ), Co(Ⅱ) with H2PPCA ligand (H2PPCA=5-pyrazin-2-yl-1H-pyrazole-3-carboxylic acid) in the same hydrothermal conditions resulted in two distinct structural metal-organic frameworks (MOFs), namely, [Cu(PPCA)(H2O)]·H2O (HPU-7) and {[Co(PPCA)(H2O)]·H2O}n (HPU-8). HPU-7 that obtained from CuCl2·2H2O at 160℃ is a dinuclear cluster based on Cu(Ⅱ) ions and PPCA2- ligands. HPU-8 synthesized by Co(NO3)2·6H2O at 160℃ exhibits a 4, 4-connected 2D layer connected by dinuclear Co(Ⅱ) clusters and the skeletons of the PPCA2- ligands. The structural differences are dependent on the coordination geometries of central metal ions. And due to the structural differences, the two complexes display different photodegradation efficiencies toward methylene blue (MB).
Upconversion Emission and Temperature Sensing Behavior of LuF3: Yb3+, Er3+ Microcrystals Prepared by One-Step Hydrothermal Synthesis
Qi WANG, Jin-Sheng LIAO, Jiang-Fei GUO, Hai-Ping HUANG, He-Rui WEN
2018, 34(3): 579-588  doi: 10.11862/CJIC.2018.067
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LuF3:Yb3+, Er3+ microcrystals codoped with Yb3+ nYB3+/nLu3+=5%~15%) and Er3+ ions (nEr3+/nLu3+=1%~5%) were synthesized by a facile hydrothermal process at different pH values. It is found that the pH value has a crucial effect on synthesis of the orthorhombic phase LuF3:Yb3+, Er3+. Under 980 nm excitation, LuF3:Yb3+, Er3+ phosphors exhibit strong green upconversion (UC) emission bands centered at 523 (2H11/24I15/2) and 539 nm (4S3/24I15/2) and weak red emissions near 660 nm (4F9/24I15/2). The optimum doping concentrations of Er3+ and Yb3+ for the highest emission intensity were determined by using X-ray diffraction (XRD) and photoluminescence (PL) analyses. Concentration dependent studies reveal that the optimal composition is 10% Yb3+ and 2% Er3+ co-doping concen-tration with a strong green emission. A possible UC mechanism for LuF3:Yb3+, Er3+ depends on the pump power is discussed. The temperature dependence of the fluorescence intensity ratios (FIR) for the two green UC emission bands peaked at 523 and 539 nm was studied in the range of 293~573 K under excitation by a 980 nm diode laser and the maximum sensitivity was approximately 15.3×10-4 K-1 at 490 K. This indicates that LuF3:Yb3+, Er3+ phosphors are potential candidates for optical temperature sensors with high sensitivity.
Construction of Two Coordination Polymers Based on 5-Methoxyisophthalic Acid Ligand: Structures, Luminescence and Catalytic Properties
Yang ZHANG, Jian WANG
2018, 34(3): 589-596  doi: 10.11862/CJIC.2018.073
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Two new 1D cadmium/cobalt-based coordination polymers, {[Cd2(CH3O-ip)2(ethanol)2(H2O)4]·3H2O}n (1) and {[Co2(CH3O-ip)2(dmbpy)(H2O)4]·H2O·C2H3N}n (2) (CH3O-H2ip=5-methoxyisophthalic acid, dmbpy=2, 2'-dimethyl -4, 4'-bipyridine, C2H3N=acetonitrile), were synthesized in mixed solvent and characterized by IR spectroscopy, elemental analysis, thermogravimetric analysis (TGA), powder X-ray diffraction and single-crystal X-ray diffraction. Both complexes are synthesized using dual linkers (CH3O-H2ip and dmbpy). Complex 1 is a wave-like chain and further connected into 2D network through O-H…O hydrogen bonds, whereas 2 shows a ladder chain and further linked into 3D supramolecular framework by O-H…O, O-H…N and C-H…O hydrogen bonds. Furthermore, the luminescence property of 1 and the catalytic degradation of methyl orange in a Fenton-like process of 1~2 are also investigated.
3D Silver Dendritic Thin Film: Controllable Growth and Application in Surface Enhanced Raman Spectroscopy
Hui-Juan ZHANG, Dong-Jie ZHANG, Cong-Yun ZHANG, Ya-Qing LIU
2018, 34(3): 597-604  doi: 10.11862/CJIC.2018.085
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A novel surface enhanced Raman spectroscopy (SERS) substrate was fabricated via a simple galvanic displacement reaction, where large scale of silver dendritic were uniformly and symmetrically formed on anodic aluminum oxide (AAO) membrane. The morphology, distribution and density of these silver dendritic films could be tuned easily just by controlling the reaction time as well as the concentration of AgNO3. Such active SERS substrate exhibits extremely high sensitivity, excellent reproducibility and good stability. Raman signal sensitivity for rhodamine 6G (R6G) was tested as low as 1×10-11 mol·L-1. Additionally, the as-synthesized robust substrate displays good stability under an ambient condition for several months. This 3D eco-friendly AAO membrane based substrate provides not only high density of SERS hot spots, but also a very large area for capturing target analytes. It has potential applications for the detection of trace organic contaminants in the environment.
Syntheses, Crystal Structures and Photoluminescent Properties of Two Cadmium(II) Coordination Polymers Constructed from Tris(4-imidazolylphenyl)amine
Jian LI, Min YU, Guang-Xiang LIU
2018, 34(3): 605-613  doi: 10.11862/CJIC.2018.069
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Two cadmium(Ⅱ) coordination polymers, [CdI(TIPA)(CDC)0.5]n (1) and {[Cd(TIPA)(MPDA)]·H2O}n (2), (TIPA=tris(4-imidazolylphenyl)amine, H2CDC=1, 4-cyclohexanedicarboxylic acid, H2MPDA=5-methylisophthalic acid), have been synthesized and characterized by IR spectroscopy, elemental analyses and single-crystal X-ray diffraction. Structural analyses reveal that complex 1 features a rare 2D→2D polyrotaxane network with (3, 4)-connected (4.52)(4.53.72) topology, which is further interlinked into a higher-dimensional supramolecular framework by intermolecular weak interactions, whereas complex 2 has a two-dimensional (3, 5)-connected novel network with (42.67.8)(42.6) topology and shows a 2D→3D parallel-parallel polycatenation framework. The results show that the carboxylates exert obvious influence on the resulting architectures. Meanwhile, the solid-state photoluminescence of two complexes at room temperature was also investigated.
论文
三维多枝雪花状银粉的制备及催化性能
郭帅龙, 巢云秀, 杨宏伟, 杨宇雯, 李郁秀, 方卫
2018, 34(3): 421-426  doi: 10.11862/CJIC.2018.040
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室温下,以聚乙烯醇为保护剂,采用抗坏血酸还原硝酸银,于水相中一步合成出三维多枝雪花状银粉。结合X射线粉末衍射(XRD)、扫描电子显微镜(SEM)等结构表征手段,对三维多枝雪花状银粉的微观结构进行详细分析,在此基础上提出其可能的形成机理。此外,三维多枝雪花状银粉在4-硝基苯酚催化加氢反应中还表现出优异的催化活性。
一硼化铪的晶体结构预测与构效关系基因
魏晓婷, 曾庆丰, 张琪, 冯钦颢
2018, 34(3): 427-435  doi: 10.11862/CJIC.2018.080
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利用基于进化算法的晶体结构预测软件USPEX,并结合第一性原理方法对HfB的稳定晶体结构进行全局搜索。在基态条件下,新发现2个HfB晶体结构(空间群:P6m2和R3m)。其中,P6m2结构比已报道的HfB晶体结构(空间群:PnmaCmcmI41/amdFm3m)具有最低的基态能量。这些结构中,B原子分别以二维类石墨烯(P6m2和R3m结构),zig-zag链(PnmaCmcm和41/amd结构)和孤立原子(Fm3m结构)3种形式存在,从而导致它们具有显著的化学键合特征、高温稳定性和强韧特性差异。
一种规整单壁碳纳米笼的合成与改性及其对水体结晶紫分子的吸附性能
朱鸿宇, 杨汉培, 孙慧华, 高照, 毛静涛, 吴俊明
2018, 34(3): 445-453  doi: 10.11862/CJIC.2018.047
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运用催化气相沉积法及继之的纯化处理,获得了具有规整外型、中空及密集阵列的单壁三维结构碳纳米笼(carbon nanocages,CNCs)。尝试将其用于水体阳离子染料结晶紫(crystal violet,CV)的吸附去除,实验条件下其上CV的饱和吸附容量可达542.6 mg·g-1。进一步以十二烷基苯磺酸钠(sodium dodecyl benzene sulfonate,SDBS)对制得的CNCs表面进行亲水性改性,观察到了改性CNCs对CV吸附性能的明显提升,相同条件下其上CV的饱和吸附容量显著提升至748.5 mg·g-1。运用多种表征及测定,探明改性前后CNCs的组成和结构,并尝试与其吸附性能关联,在此基础上探明改性及促进机制,为进一步研发具有实用意义的污水处理技术提供有益参考。
反应介质对溶剂热法合成CuS晶体的影响
赵巍, 荣嘉诚, 刘念奇, 王子豪
2018, 34(3): 454-460  doi: 10.11862/CJIC.2018.052
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以氯化铜、硫脲为反应物,通过溶剂热法合成了具有不同形貌的微纳米分级结构CuS晶体,研究了不同反应介质对材料的形貌、晶体结构以及反应产量等的影响。结果表明,以N,N-二甲基甲酰胺(DMF)为溶剂,可以得到微米级六角花状CuS晶体;以乙二醇或者水/DMF混合物为溶剂,得到的CuS晶体为微米球花状。CuS晶体的产量随着溶剂中水所占比例的增大,呈现先上升后下降的结果,当VDMF:VH2O=1:1时得到CuS的最大产量,为理论产量的64.5%。当VDMF:VH2O=2:1时得到的CuS晶体具有良好的光催化活性,能够在氙灯模拟的自然光照射2.5 h以内使罗丹明B污染物溶液的脱色率达到96.7%。
晶种导向下干胶法合成ZSM-5分子筛
陈艳红, 崔红霞, 韩东敏, 张强, 李春义
2018, 34(3): 461-466  doi: 10.11862/CJIC.2018.049
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以廉价水玻璃为硅源,在晶种替代有机模板剂的条件下采用干胶法合成了ZSM-5分子筛。利用XRD、SEM、TEM、FTIR、N2吸附-脱附和NH3-TPD等分析方法对合成样品进行了表征和测试,考察了合成条件对ZSM-5分子筛晶化过程的影响。结果表明,在硅铝比(n/n)为30~70,钠硅比(n/n)为0.12~0.20时都可以得到结晶度良好的ZSM-5分子筛。研究发现,干胶法合成ZSM-5,在不引入外加水的情况下也可以得到ZSM-5样品,外加水的引入能够有效地提高晶化速率;与水热法合成ZSM-5分子筛相比,干胶法可以显著地缩短晶化时间,同时,合成样品的晶体尺寸也有所减小。
多孔纳米片状石墨相氮化碳的制备及其可见光催化
侯建华, 蔡瑞, 沈明, 蒋坤
2018, 34(3): 467-474  doi: 10.11862/CJIC.2018.064
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以三聚氰胺和硫脲为前驱体,通过简易的氧气刻蚀制备了多孔纳米片状氮化碳。相比于三聚氰胺制备的薄片状氮化碳(MCNS),以硫脲制备的多孔纳米片状的g-C3N4(TCNS)片层更薄,其单片厚度约为30 nm,且TCNS的层状结构明显,能带隙约为3.03 eV,高于石墨相氮化碳(2.77 eV),更宽的禁带赋予载流子更强的氧化还原能力。较大的比表面积(114 m2·g-1)可以提供更多的活性位点,同时纳米片状结构可以促进电子与空穴的有效分离和转移,且能有效地降低光生载流子的复合率,因而TCNS具有更高的光催化活性。
La1-xSrxCoO3(x=0, 0.2, 0.4, 0.6, 0.8)钙钛矿型氧化物的催化性能及改性
于文婉, 黄红霞, 王成
2018, 34(3): 475-482  doi: 10.11862/CJIC.2018.063
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通过溶胶-凝胶法制备出A位Sr掺杂的钙钛矿型氧化物La1-xSrxCoO3x=0,0.2,0.4,0.6,0.8),并将其作为催化剂应用于双功能氧电极中。测试结果表明,A位Sr的掺杂的La1-xSrxCoO3比LaCoO3具有更高的电催化活性,并且La0.6Sr0.4CoO3在氧还原和氧析出反应中均表现出最优的催化性能,最大电流密度分别达到0.244 A·cm-2(-0.6 V vs Hg/HgO)和0.303 A·cm-2(1 V vs Hg/HgO)。为进一步提高催化剂的催化活性,将水热法制备的α-MnO2纳米管与La0.6Sr0.4CoO3复合作为双功能催化剂。当α-MnO2的质量分数为40%时,比起单一的α-MnO2或钙钛矿氧化物,α-MnO2/La0.6Sr0.4CoO3复合材料表现出协同效应,有更好的双功能电催化活性,使双效氧电极具有更好的电化学性能及稳定性。
Y沸石和多级孔Y沸石封装CuPhen配合物催化性能的比较
王红燕, 赵彦鹏, 吕文苗, 路宁悦, 史秀锋, 范彬彬, 李瑞丰
2018, 34(3): 483-489  doi: 10.11862/CJIC.2018.061
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摘要:
选用常规Y沸石和经后处理法制备的多级孔Y沸石为主体,采用自由配体法将铜菲咯啉(CuPhen)配合物封装在不同Y沸石中,制备了CuPhen/Y复合催化材料。采用X射线衍射、TEM、紫外-可见光谱、N2吸附-脱附、ICP和TG等手段对所制备复合催化材料的物化性质进行了较为详细的表征,并对封装在不同Y沸石主体中的铜配合物在不同尺寸大小反应底物中的催化氧化性能进行了比较研究。结果表明,在以双氧水为氧化剂的反应体系中,封装于多级孔Y沸石中的铜配合物在不同环烷烃氧化反应中的催化活性均高于封装在常规Y沸石中的催化活性,体现出多级孔Y沸石更为优越的主体性能。此外,同封装于常规Y沸石中的铜配合物一样,封装在多级孔Y沸石主体中的金属配合物催化剂也具有良好的稳定性。
丝素纤维/硫酸钙抗感染骨材料的制备及性能
刘世超, 连小洁, 徐睿, 史振东, 杜苗苗, 张斯若, 何志敏, 魏延, 黄棣, 王秀梅, 崔福斋
2018, 34(3): 490-498  doi: 10.11862/CJIC.2018.065
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摘要:
通过控制丝素蛋白自组装过程制备了溶液状态下的丝素纳米纤维(silk fibroin nanofibers,SFFs),与硫酸钙、万古霉素(vancomycin,VCM)复合,制备了VCM/CS/SFFs抗菌骨材料。通过SEM、XRD、紫外分光光度计、万能力学试验机、抑菌圈、MTT等手段分别研究了复合材料的微观形貌与结构、药物释放、力学、抑菌及细胞相容性等性能。结果显示,与水作为固化液相比,随着SFFs溶液(0.017 5~2.1 mg·mL-1)的加入,复合材料凝固时间可控,降解率逐渐降低,抗水性增强,韧性提高;同时随丝素纳米纤维含量的增加骨材料抗压强度表现为先增加后减小的趋势,一周内药物释放速率降低;材料同时具有抑菌作用;MTT实验结果显示,加入丝素纳米纤维后与纯的硫酸钙相比MC3T3细胞增殖明显。
Cu、Ni共掺杂ZnO光催化性能及机理
姜建辉, 梁鹏举, 刘速, 赵俭波, 徒康楠
2018, 34(3): 499-506  doi: 10.11862/CJIC.2018.072
[摘要]  (145) [HTML全文] (145) [PDF 6318KB] (145)
摘要:
以自制的Gemini表面活性剂为软模版,硝酸锌为锌源、硫酸铜为铜源、硝酸镍为镍源,采用水热法制备Cu、Ni共掺杂ZnO。用XRD、SEM-EDX、UV-Vis DRS和PL对样品进行表征。以罗丹明B为模拟污染物,研究了水热时间,水热温度,煅烧时间,煅烧温度,Cu、Ni掺杂量对光催化性能的影响。结果表明:Cu和Ni均掺入到了ZnO晶格中,光催化实验表明,当水热时间8 h、水热温度130℃、煅烧温度500℃、煅烧时间3 h,0.8 mg·L-1的1.0% Cu-3.0% Ni/ZnO在250 W高压汞灯灯光照射90 min后对10 mg·L-1罗丹明B溶液的降解率达到96.9%。
介孔碳/石墨烯复合材料的制备及其醌类改性电容性能
高秀丽, 李硕, 邢伟, 阎子峰
2018, 34(3): 507-514  doi: 10.11862/CJIC.2018.075
[摘要]  (73) [HTML全文] (73) [PDF 3786KB] (73)
摘要:
首先利用硬模板法制备出介孔碳/石墨烯复合材料,然后向复合材料中引入具有赝电容活性的醌类分子进一步增大材料的电容性能。研究结果表明,负载30%(w/w)叔丁基氢醌的介孔碳/石墨烯复合材料具有最佳的电容性能,在电流密度为0.5 A·g-1时,比电容值为355 F·g-1;当电流密度高达30 A·g-1时,其比电容值高达226 F·g-1,比电容保持率为64%,表现出良好的速率特性。
由5-取代基间苯二甲酸和二咪唑衍生物构筑的两个二维钴(Ⅱ)的配合物的合成、结构及性质
杨明星, 刘宇晴, 岑福艳, 陈丽娟, 林深
2018, 34(3): 569-578  doi: 10.11862/CJIC.2018.071
[摘要]  (101) [HTML全文] (101) [PDF 5594KB] (101)
摘要:
通过溶剂热法合成了2个二维钴配位聚合物[Co2(1,4-bib)2(5-hipa)2]n1)(5-H2hipa=5-hydroxyisophthalic acid,1,4-bib=1,4-bis(1-imidazolyl)benzene),[Co(Hbpt)(4,4'-bidpe)]n2)(H3bpt=biphenyl-4,4',5-tricarboxylic acid,4,4'-bidpe=4,4'-bis(imidazol-1-yl)diphenyl ether)。X射线单晶衍射实验测定和结构解析结果表明,配合物12中5-hipa2-、Hbpt2-配体的2个相间羧基将相邻的Co2+连接形成含有Co2O4C2八元环和Co2O4C10十六元环的一维链状结构。一维链之间通过1,4-bib,4,4'-bidpe配体上的咪唑基N原子与相邻Co(Ⅱ)离子配位连结形成二维层状结构。配合物1层与层之间通过相邻层中的5-hipa2-配体的羟基与羧基的分子间氢键连结形成三维超分子网络结构。配合物2中,Hbpt配体的羧基氢与层内的相邻链上参与弱配位羧基氧形成层内氢键。电化学性能测试结果表明,配合物1对氧还原反应具有电催化活性。