کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
219016 | 463237 | 2013 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Investigation of electrocatalytic activity of the nanostructured Au–Cu catalyst deposited on the titanium surface towards borohydride oxidation Investigation of electrocatalytic activity of the nanostructured Au–Cu catalyst deposited on the titanium surface towards borohydride oxidation](/preview/png/219016.png)
• Titanium surface as a support for catalysts.
• Electrocatalysts for oxidation of borohydride.
• Catalysts preparation by galvanic displacement of copper layer by gold enables growth of nano-sized metal particles.
Well-adherent gold-coated copper films (Au/Cu), with particles of a few nanometers in size have been prepared on the titanium surface by a two-step process which involves electroless copper deposition followed by spontaneous galvanic displacement of Cu by Au from its tetrachloro-complex solution. The morphology and composition of the prepared catalysts have been characterized using field-emission scanning electron microscopy and energy dispersive X-ray analysis. The electrocatalytic activities of the nanostructured Au(Cu) catalysts deposited on the titanium surface have been investigated towards oxidation of BH4- ions in an alkaline medium by cyclic voltammetry and chronoamperometry. The nanostructured Au(Cu)/Ti catalysts exhibit a significantly higher electrocatalytic activity and stability towards the electrooxidation of BH4- ions in an alkaline medium as compared to that of bare Au or Cu/Ti.
Journal: Journal of Electroanalytical Chemistry - Volume 700, 1 July 2013, Pages 1–7