期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 1, 期 6, 页码 2118-2125出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ta00669c
关键词
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资金
- National Natural Science Foundation of China [20973151, 21273195]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP) [20093250110001]
- Foundation of Jiangsu Key Laboratory of Fine Petrochemical Technology
In this article, a study was presented on the catalytic activity of silver nanoparticles immobilized on magnetic Fe3O4@C (MFC) core-shell nanocomposites (Ag/MFC) that were used as carriers. MFC composites consist of a magnetic core of an Fe3O4 microsphere onto which a thin layer of carbon was coated by in situ carbonization of glucose under hydrothermal conditions. The catalytic activity of the as-prepared Ag/MFC is investigated by photometrically monitoring the reduction of 4-nitrophenol and methylene blue by an excess of NaBH4. The kinetic data of both reduction reactions could be explained by the assumption of a pseudo-first-order reaction with regard to 4-nitrophenol or methylene blue. Significantly, the Ag/MFC catalysts can be easily separated from the reaction media by applying an external magnet, and can be reused for several cycles.
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