期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 325, 期 1-2, 页码 17-20出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2008.04.035
关键词
adsorption; silica-titania; methylene blue; photocatalysis; surface modification
The adsorption behavior of reactants onto a silica-titania photocatalyst's surface can affect catalytic performance. In this work, the affects of surface functionalization on the adsorption behavior of methylene blue on silica and a silica-titania photocatalyst were investigated. The materials before and after surface modification were characterized by infrared spectrometry. Adsorption isotherms of methylene blue on silica functionalized with alkyl, amino, thiol, cyano, and thiocyano groups showed distinct differences from one another as well as from the unmodified material. Silica-titania was functionalized with thiol and thiocyano groups. The methylene blue adsorption isotherms compared to unmodified silica-titania were similarly affected, but to a lesser extent. Thiocyano groups on surface modified silica-titania were stable to UV photolysis, and the material retained photocatalytic activity. (C) 2008 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据