Novel nanoporous binary Ag-Ni electrocatalysts for hydrazine oxidation

稀有金属（英文版）, 2010, 29(1): 26-31. doi: 10.1007/s12598-010-0005-7

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

2.School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

3.School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

4.School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

5.School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

6.School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

基金项目: 国家自然科学基金(20876038) the Scientific Research Foundation for Returned Overseas Chinese Scholars of the Ministry of Education of China([2007]1108) the Scientific Research Fund of Hunan Provincial Education Department, China(07A019)

Novel nanoporous binary Ag-Ni electrocatalysts for hydrazine oxidation

YI Qingfeng ^1, , LI Lei ^2, , YU Wenqiang ^3, , LIU Xiaoping ^4, , ZHOU Zhihua ^5, , NIE Huidong ^6,

1.School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

2.School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

3.School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

4.School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

5.School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

6.School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

Keywords： electrocatalyst

From an aqueous mixture of Ag(Ⅰ)-EDTA complex and Ni(Ⅱ) nitrate, silver and nickel particles were co-deposited on the surface of titanium substrates by the hydrothermal method using hydrazine hydrate as a reduction agent. The prepared titanium-supported nano-scale Ag and Ag-Ni particles (nano Ag/Ti, nano Ag_(86)Ni_(14)/Ti, nano Ag_(77)Ni_(23)/Ti, and nano Ag_(74)Ni_(26)/Ti) exhibit nanoporous 3D network textures. Their electrocatalytic activity towards hydrazine oxidation in alkaline solutions was evaluated by cyclic voltammetry and chronoamperometry. The results show that the four samples present a low onset potential of ca. -0.60 V vs. SCE and considerably high and stable anodic current den-sities for hydrazine oxidation. Among them, the nano Ag_(86)Ni_(14)/Ti electrode exhibits the highest anodic current density towards hydrazine oxidation, showing an increment of electro-active sites on the nano Ag_(86)Ni_(14)/Ti due to the addition of Ni to Ag particles.

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Novel nanoporous binary Ag-Ni electrocatalysts for hydrazine oxidation

参考文献