Journal
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volume 176, Issue 14, Pages 1123-1127Publisher
ELSEVIER
DOI: 10.1016/j.mseb.2011.05.046
Keywords
Ag/Fe3O4 micro-sphere; Electrocatalysis; p-Nitrophenol; Hydrothermal synthesis
Funding
- Excellent Young Academic Foundation of Anhui Province [2010SQRL163]
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One-step reaction was designed to synthesize mono-dispersed Ag/Fe3O4 micro-sphere with different Ag content via a facile and easily controlled hydrothermal method without use of any surfactant. The phases and composition analysis of the as-prepared samples were characterized by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), respectively. The morphology of the samples was observed by transmission electron microscopy (TEM) and field-emission scanning electron microscopy (FE-SEM). The results revealed that the Ag/Fe3O4 composite samples with different Ag content were micro-spheres with almost the identical size of 175 nm or so in diameter. The electrocatalytic activity of the resultant samples modified on a glassy carbon electrode (GCE) for p-nitrophenol reduction in a basic solution was investigated. The results indicated that all the samples exhibited enhanced electrocatalytic activity for p-nitrophenol reduction, and the sample with 3% Ag exhibited the highest electrocatalytic one. (C) 2011 Elsevier BM. All rights reserved.
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