Nano Ag/TiO2 catalyst prepared by chemical deposition and its photocatalytic activity

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Title:	Nano Ag/TiO2 catalyst prepared by chemical deposition and its photocatalytic activity
Authors:	陳郁文;Lee, Der-Shing;Chen, Yu-Wen
Contributors:	工學院化學工程與材料工程學系
Keywords:	Chemical deposition;Methylene blue destruction;Photocatalysis;Silver;Titanium dioxide
Date:	2014-03-01
Issue Date:	2026-04-21 14:22:36 (UTC+8)
Publisher:	Taiwan Institute of Chemical Engineers;Elsevier B.V
Abstract:	摘要： •Ag/TiO2 was successfully prepared by chemical deposition method.•Silver nanoparticles were synthesized and cetyltrimethyl ammonium bromide was used as the surfactant to disperse Ag particles in water.•Ag particles were then deposited on TiO2.•Ag particles were finely dispersed on TiO2 support and had strong metal support interaction with TiO2.•The photocatalytic activity increased after loading with Ag.•The optimum Ag loading was 2wt%. A series of Ag/TiO2 was prepared by chemical deposition method using silver nitrate, cetyltrimethyl ammonium bromide, and sodium borohydride. Silver nanoparticles were synthesized and cetyltrimethyl ammonium bromide was used as the surfactant to disperse Ag particles in water, Ag particles were then deposited on TiO2. The catalysts were characterized by inductively-coupled plasma-mass spectroscopy, X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and UV–vis spectroscopy. The photocatalytic reaction of these catalysts for methylene blue destruction was carried out in a batch reactor under UV light irradiation. Ag particles were finely dispersed and homogeneously distributed on TiO2 support and had strong metal support interaction with TiO2 by using chemical deposition method. Large amount of hydroxyl groups were on the surface of the catalysts. The photocatalytic activity increased after loading with Ag. Ag particles offered electron traps to decrease the recombination of electrons and holes, but too many Ag nanoparticles block the TiO2 surface from light scattering. The optimum Ag loading was 2wt%. 出版者： Elsevier B.V 出版日期： 2014-03 出處： Journal of the Taiwan Institute of Chemical Engineers, 2014-03, Vol.45 (2), p.705-712 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2013 Taiwan Institute of Chemical Engineers 識別號： ISSN: 1876-1070 識別號： EISSN: 1876-1089 識別號： DOI: 10.1016/j.jtice.2013.07.007
Appears in Collections:	[Department of Chemical and Materials Engineering] journal & Dissertation

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