Worm-Like Palladium/Carbon Core鈭扴hell Nanocomposites: One-Step Hydrothermal Reduction鈭扖arbonization Synthesis and Electrocatalytic Activity

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• 作者：Wenjun Kang ; Haibo Li ; Yan Yan ; Peipei Xiao ; Lingling Zhu ; Kaibin Tang ; Yongchun Zhu ; Yitai Qian
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：April 14, 2011
• 年：2011
• 卷：115
• 期：14
• 页码：6250-6256
• 全文大小：1086K
• 年卷期：v.115,no.14(April 14, 2011)
• ISSN：1932-7455

文摘

Worm-like palladium/carbon (Pd/C) core鈭抯hell nanocomposites have been hydrothermally prepared starting from PdCl₂ and 伪-lactose monohydrate (伪-LM) in the presence of polyacrylamide (PAM) at 200 掳C. The thickness of carbonaceous shells varied from 5 to 45 nm with increasing temperature from 140 to 200 掳C. When the dose of PAM or PdCl₂ was increased, spherical Pd/C core鈭抯hell nanocomposites were obtained. Time-dependent experiments confirmed that formation of Pd/C core鈭抯hell nanocomposites underwent an entrapment鈭抮eduction鈭抍arbonization process. Such a route has also been extended to synthesize spherical Ag/C core鈭抯hell composites. A cyclic voltammetry (CV) study reveals that the as-prepared Pd/C core鈭抯hell nanocomposites exhibit electrocatalytic activity toward oxidation of ascorbic acid (AA).