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OALib Journal期刊
ISSN: 2333-9721
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热解二氧化钛/聚苯胺制备高效非贵金属氧还原电催化剂
DOI: 10.1016/S1872-2067(14)60223-0, PP. 414-424
Keywords: 聚苯胺,二氧化钛,热解,阴极催化剂,氧还原
Abstract:
？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TiO2/聚苯胺(PANI)复合物的方法合成了TiO2/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TiO2间存在相互作用,可以抑制TiO2的团聚和锐钛矿向金红石的转变.热处理制得TiO2/C的氧还原活性随着PANI载体含量增加先升高后降低,PANI和TiO2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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