【摘 要】
：
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 hy
【机 构】
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School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 4
论文部分内容阅读
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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