Silver nanoparticles supported on ordered mesoporous carbon for formaldehyde electrooxidation

摘要：

Metal nanocatalysts, as the anodic materials, have become increasingly important in fuel cells due to their unique physical and chemical properties. Here we report the ordered mesoporous carbon (CMK-3) supported silver nanocatalysts have been prepared through the wet chemical reduction by using the reduction of formaldehyde. The electrochemical properties of the Ag/CMK-3 nanocatalysts for formaldehyde oxidation are studied by cyclic voltammograms (CV) and chronoamperometric curves (it) in alkaline aqueous solutions. The results show that the peak current density (from CV) of the Ag/CMK-3 electrode is 112 mA cm-2, above 2 times higher than that of Ag/XC-72 at the same Ag loading (14.15 μg cm-2). Furthermore, the i-t curves demonstrate that the Ag/CMK-3 nanocatalysts are efficient and stable electrocatalysts for anodic oxidation of formaldehyde in alkaline solutions. Our results indicate that the application potential of Ag/CMK-3 nanocatalysts with the improved electrocatalytic activity has far reaching effects on fuel cells and sensors.

关键词： Ag nanoparticles ordered mesoporous carbon formaldehyde electrooxidation

作者: Ling-Bin Kong Ru-Tao Wang Xiao-Wei Wang Zhen-Sheng Yang Yong-Chun Luo Long Kang

作者单位: State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology Lanzhou 730050 P. R. China

会议类型: 国际会议

会议名称: 2010 International Conference on Nano Science and Technology(2010年IEEE纳米科技国际会议 ICNST2010)

会议地点: 成都

会议语种:英文

页码: 25-28

在线出版日期: 2010-12-17（万方平台首次上网日期，不代表论文的发表时间）