期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 509, 期 18, 页码 5677-5682出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2011.02.121
关键词
AgCl/PPy composites; AgCl; Visible light-driven photocatalysis; Photoreduction
资金
- National Natural Science Foundation of China [20504026, 20604015]
- International Scientific and Technological Cooperation Program of Shanghai [08230705600]
- Shanghai Nanotechnology Promotion Center [0852nm02300]
- Shanghai Leading Academic Discipline Project [B502]
- Shanghai Key Laboratory Project [08DZ2230500]
Visible light photoactive AgCl/polypyrrole (PPy) composites were prepared via the reaction between excessive Ag+ and Cl- ions in the presence of PPy. The AgCl/PPy composites were systematically characterized using Fourier transform infrared (FTIR) spectroscopy, Raman spectra, X-ray diffraction (XRD), Scanning electron microscope (SEM), Transmission electron microscope (TEM) and Thermal gravity analysis (TGA). It was found that face-centered cubic AgCl nanocrystallite and 0.2 wt% PPy component existed in the composite and spherical AgCl/PPy nanoparticles were in the range of 200-600 nm. The AgCl/PPy composites showed higher visible light-driven photocatalytic activity and stability than that of AgCl. A photoreduction mechanism was postulated for AgCl/PPy photocatalyst on dye methyl orange (MO). The used AgCl/PPy photocatalyst was facilely regenerated by an oxidation process in aqueous FeCl3 solution. (C) 2011 Elsevier B.V. All rights reserved.
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