doi: 10.7763/IJAPM.2011.V1.2
Electrooxidation of Formaldehyde on Silver/Ordered Mesoporous Carbon Composite Electrode in Alkaline Solutions
Ling-Bin Kong
1
,
,
,
,
,
Long Kang
2
- 1 State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, P. R. China
- 2 School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, P. R. China
Abstract
Metal nanocatalysts, as the anodic materials, have become increasingly important in fuel cells, due to their unique physical and chemical properties. Here, the porous silica was employed as a hard template to prepare the ordered mesoporous carbon (CMK-3). The as-prepared CMK-3 has a large surface area of 877 m<sup>2</sup>/g and the hierarchical porous structure with the pore size distribution centered at 3.7 nm. The 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 voltammerry (CV) and chronoamperometric curves (i-t) in alkaline aqueous solutions. The results show that the peak current density (CV) of the Ag/CMK-3 electrode is 112 mA/cm<sup>2</sup>, above 2 times higher than that of Ag/XC-72 at the same Ag loading (14.15 μg/cm<sup>2</sup>). Furthermore, i-t curves demonstrate that the Ag/CMK-3 nanocatalysts are efficient and stable electrocatalysts for anodic oxidation of formaldehyde in alkaline solutions. Therefore, Ag/CMK-3 nanocatalysts with the improved electrocatalytic activity suggest their application potential towards fuel cells and sensors.
Keywords
- Nan
- catalysts;
- Ag
- nanoparticles;
- ordered
- mesoporous
- carbon;
- formaldehyde
- electro
- oxidation
How to Cite
Ling-Bin Kong, Ru-Tao Wang, Xiao-Wei Wang, Zhen-Sheng Yang, Yong-Chun Luo, and Long Kang, "Electrooxidation of Formaldehyde on Silver/Ordered Mesoporous Carbon Composite Electrode in Alkaline Solutions," International Journal of Applied Physics and Mathematics, vol. 1, no. 1, pp. 5-9, 2011. https://doi.org/ 10.7763/IJAPM.2011.V1.2
Copyright & License
Copyright © 2011 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).