| 中空介孔三氧化钨微球载钯催化剂的甲酸氧化电催化性能 |
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| 引用本文： | 周阳,胡仙超,李立清,陈喜蓉.中空介孔三氧化钨微球载钯催化剂的甲酸氧化电催化性能[J].物理化学学报,2014,30(1):83-87. |
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| 作者姓名： | 周阳 胡仙超 李立清 陈喜蓉 |
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| 作者单位： | 1.Engineering Research Center of High-Efficiency Development and Application Technology of Tungsten Resources, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P. R. China;2.Metallurgical and Chemical Engineering Institute, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P. R. China;3.Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou 310032, P. R. China |
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| 基金项目： | 江西理工大学博士后科研基金，浙江省科技厅项目(2013C37104)和江西省自然科学基金(20132BAB213009)资助 |
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| 摘 要： | 采用喷雾干燥法和焙烧处理制备中空介孔三氧化钨微球(HMTTS)，在其表面进一步负载活性成分Pd，得到纳米Pd/HMTTS复合催化剂. 采用X射线粉末衍射(XRD)、扫描电镜(SEM)和透射电镜(TEM)等对催化剂的形貌和晶型结构进行了表征. 结果表明，Pd纳米粒子为面心立方晶体结构，均匀地分布在HMTTS表面. 采用循环伏安和计时电流法研究了在酸性溶液中Pd/HMTTS 催化剂对甲酸的电催化氧化性能，结果表明Pd/HMTTS 催化剂比普通的三氧化钨载钯催化剂(Pd/WO3)对甲酸呈现出更高的电催化氧化活性和稳定性.HMTTS独特的中空介孔结构和表面特性以及氢溢流效应有利于甲酸在钯表面的直接脱氢氧化过程的发生.
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| 关 键 词： | 直接甲酸燃料电池 甲酸氧化 三氧化钨 电催化 介孔材料 |
| 收稿时间： | 2013-08-11 |
| 修稿时间： | 2013-11-01 |
Palladium Nanoparticles Supported on Hollow Mesoporous Tungsten Trioxide Microsphere as Electrocatalyst for Formic Acid Oxidation |
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| ZHOU Yang,HU Xian-Chao,LI Li-Qing,CHEN Xi-Rong.Palladium Nanoparticles Supported on Hollow Mesoporous Tungsten Trioxide Microsphere as Electrocatalyst for Formic Acid Oxidation[J].Acta Physico-Chimica Sinica,2014,30(1):83-87. |
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| Authors: | ZHOU Yang HU Xian-Chao LI Li-Qing CHEN Xi-Rong |
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| Institution: | 1.Engineering Research Center of High-Efficiency Development and Application Technology of Tungsten Resources, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P. R. China;2.Metallurgical and Chemical Engineering Institute, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P. R. China;3.Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou 310032, P. R. China |
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| Abstract: | Hollow mesoporous tungsten trioxide microsphere (HMTTS) was synthesized by spay drying method and employed as the support material for Pd catalyst. The catalyst was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The Pd nanoparticles had a face-centered cubic crystal structure and were well dispersed on the external walls of HMTTS. The as-prepared Pd/HMTTS catalyst exhibits higher electrocatalytic activity and good stability during formic acid oxidation in comparison to Pd/WO3 catalyst. The enhanced catalytic performance is attributed to the unique structure and surface properties of HMTTS and the hydrogen spillover effect which greatly accelerates the direct dehydrogenation of formic acid on palladium. |
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| Keywords: | Direct formic acid fuel cell Formic acid oxidation Tungsten trioxide Electrocatalyst Mesoporous material |
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