| 热解二氧化钛/聚苯胺制备高效非贵金属氧还原电催化剂 |
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| 引用本文： | 邹志娟,程皓,王靖宇,韩喜江.热解二氧化钛/聚苯胺制备高效非贵金属氧还原电催化剂[J].催化学报,2015(3):414-424. |
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| 作者姓名： | 邹志娟 程皓 王靖宇 韩喜江 |
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| 作者单位： | 1. 哈尔滨工业大学化学系,黑龙江哈尔滨,150001;2. 哈尔滨工业大学化学系，黑龙江哈尔滨150001; 华中科技大学化学与化工学院，大型电池关键材料与系统教育部重点实验室，湖北武汉430074 |
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| 基金项目： | supported by the National Natural Science Foundation of China (21001037,21071037,and 91122002);the Special Fund for Harbin Technological Innovation Talent (2013RFLXJ011);the Research Fund for Talent Introduction of Huazhong University of Science and Technology (2014036)~~ |
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| 摘 要： | 为了克服传统Pt系催化剂价格昂贵、稳定性差的缺点,采用热解新型Ti O2/聚苯胺(PANI)复合物的方法合成了Ti O2/C催化剂.用扫描电子显微镜、X射线光电子能谱、X射线衍射、傅里叶变换红外光谱、拉曼光谱、透射电子显微镜、循环伏安法和线性扫描伏安法等方法研究了热处理和PANI复合比例对复合物的形貌、成键、晶相组成及氧还原性能的影响.结果表明,PANI与Ti O2间存在相互作用,可以抑制Ti O2的团聚和锐钛矿向金红石的转变.热处理制得Ti O2/C的氧还原活性随着PANI载体含量增加先升高后降低,PANI和Ti O2质量比为35/100时,催化剂的氧还原活性最高.同时,循环伏安和时间-电流曲线测试表明,已制备的复合材料在催化氧还原反应进行时具有较好的稳定性.
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| 关 键 词： | 聚苯胺 二氧化钛 热解 阴极催化剂 氧还原 |
Pyrolyzed titanium dioxide/polyaniline as an efficient non-noble metal electrocatalyst for oxygen reduction reaction |
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| Zhijuan Zou
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Hao Cheng
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Jingyu Wang
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Xijiang Han.Pyrolyzed titanium dioxide/polyaniline as an efficient non-noble metal electrocatalyst for oxygen reduction reaction[J].Chinese Journal of Catalysis,2015(3):414-424. |
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| Authors: | Zhijuan Zou Hao Cheng Jingyu Wang Xijiang Han |
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| Institution: | Zhijuan Zou;Hao Cheng;Jingyu Wang;Xijiang Han;Department of Chemistry,Harbin Institute of Technology;Key Laboratory for Large-Format Battery Materials and System (Ministry of Education),School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology; |
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| Abstract: | To overcome the prohibitive cost and poor durability of conventional Pt‐based catalysts, TiO2/C was prepared by pyrolyzing a novel titanium dioxide/polyaniline (TiO2/PANI) composite. The prepared catalysts were characterized by scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, X‐ray photoelectron spectroscopy, X‐ray diffraction, cyclic voltammetry (CV), and linear sweep voltammetry. Interaction between PANI and TiO2 was found to inhibit the aggregation of TiO2 and its transformation from anatase to rutile. The catalytic activity of the TiO2/C first increased with increasing PANI content and then decreased; the optimum was achieved when the PANI/TiO2 mass ratio was 35/100. CV and i–t curves showed that the prepared composite has a good catalytic stability. |
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| Keywords: | Polyaniline Titania Pyrolyzation Cathode catalyst Oxygen reduction reaction |
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