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Preparation of Highly Dispersed and Ultrafine Pt Particles on Carbon Nanotubes used as an Effective Electrochemical Catalyst
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Preparation of Highly Dispersed and Ultrafine Pt Particles on Carbon Nanotubes used as an Effective Electrochemical Catalyst
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The Open Research Project of the State Key Laboratory of Millimeter Waves (K201218); the Department of Educational, Science & Technology, and Human Resources & Social Security of Jiangxi Province (GJJ12366, 20122BAB216013, 20121BBE50027, [2012]195); the China Postdoctoral Science Foundation (2012M511458); and the National Natural Science Foundation of China (51202095, 51264010)

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    摘要:

    研究了不同分散程度的雙壁碳納米管(DWCNTs)作為載體沉積Pt，得到了尺寸2.08 nm的Pt顆粒均勻分散于DWCNTs表面。這種尺寸與分散狀態(tài)的Pt顆粒相比其樣品顯示了極高的電催化活性(電流密度為0.022 A·cm?2，電化學(xué)比表面積為86.38 m2 ·g-1)。進(jìn)一步的分析表明，載體在溶液中的濃度對(duì)形成Pt顆粒的尺寸和分布具有重要影響，這種尺寸與分散狀態(tài)的Pt顆?？梢詫?shí)現(xiàn)高電催化活性和低成本的Pt催化劑制備

    Abstract:

    This study investigated different dispersed double-walled carbon nanotubes (DWCNTs) as supports for depositing Pt nanoparticles. Homogenously dispersed Pt particles with sizes of approximately 2.08 nm were obtained on DWCNT surfaces. The size and the dispersion state of the Pt particles on the DWCNT support exhibit stronger hydrogen desorption/adsorption peaks and higher electrochemical activity (electric current density is 0.022 A·cm?2 and electrochemical specific surface area is 86.38 m2·g-1) compared to the other Pt/DWCNT catalysts. Further analysis shows that the concentration of the support in the suspension significantly affects the size and the uniformity of the generated Pt particles. The Pt particles of the size and the state on the supports can realize a Pt catalyst with high electrochemical activity and low cost.

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吳子平,張偉波,尹艷紅,黎業(yè)生,陳一勝,羊建高,劉 詠,許前豐. Preparation of Highly Dispersed and Ultrafine Pt Particles on Carbon Nanotubes used as an Effective Electrochemical Catalyst[J].稀有金屬材料與工程,2015,44(6):1351~1356.[Wu Ziping, Zhang Weibo, Yin Yanhong, Li Yesheng, Chen Yisheng, Yang Jiangao, Liu Yong, Xu Qianfeng. Preparation of Highly Dispersed and Ultrafine Pt Particles on Carbon Nanotubes used as an Effective Electrochemical Catalyst[J]. Rare Metal Materials and Engineering,2015,44(6):1351~1356.]
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  • 收稿日期:2014-06-01
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  • 在線發(fā)布日期: 2016-01-04
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