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

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. doi: 10.3866/PKU.WHXB201311012 shu

Citation: 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. doi: 10.3866/PKU.WHXB201311012 shu

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

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) (2013C37104)

江西省自然科学基金(20132BAB213009)资助 (20132BAB213009)

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.

关键词:

English

Palladium Nanoparticles Supported on Hollow Mesoporous Tungsten Trioxide Microsphere as Electrocatalyst for Formic Acid Oxidation

1.
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
Received Date: 11 August 2013
Available Online: 01 January 2014
Fund Project:
江西理工大学博士后科研基金，浙江省科技厅项目(2013C37104)

江西省自然科学基金(20132BAB213009)资助

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 od 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.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

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

English

Palladium Nanoparticles Supported on Hollow Mesoporous Tungsten Trioxide Microsphere as Electrocatalyst for Formic Acid Oxidation

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

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

English

Palladium Nanoparticles Supported on Hollow Mesoporous Tungsten Trioxide Microsphere as Electrocatalyst for Formic Acid Oxidation

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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