无机材料学报Issue(8)：795-800,6.DOI:10.15541/jim20130575
煅烧对纳米TiO2/蛋白土复合材料光催化性能的影响及机理
Effects of Calcination Condition on Photocatalytic Properties of Nano-TiO2/Opal Composite and Its Mechanism
摘要
Abstract
Nanocrystalline TiO2 particles immobilized on opal by a hydrolysis precipitation method are used as a novel catalyst in photocatalysis. Effects of crystalline and size, BET specific surface area and porous properties on the photoactivity were investigated by characterizing samples obtained under various calcination temperatures and periods. Results reveal that there is still no evidence of rutile phase in XRD patterns when the calcination temperature increases to 800℃. This indicates that the opal support impedes the phase transformation. The photocatalytic reactivity of this nano-TiO2/opal composite catalyst was evaluated by degrading Rhodamine B (RhB) under ultraviolet light. The sam-ple calcined at 600℃ for 2 h exhibits the smaller crystalline size and larger specific surface area with a concomitant higher activity of 97.24%for RhB degradation by 4 h irradiation under 250 W Hg lamp.关键词
二氧化钛/蛋白土/煅烧/光催化Key words
opal/TiO2/calcination/photocatalysis分类
矿业与冶金引用本文复制引用
汪滨,郑水林,文明,张广心..煅烧对纳米TiO2/蛋白土复合材料光催化性能的影响及机理[J].无机材料学报,2014,(8):795-800,6.基金项目
国家“十二五”科技支撑计划重点项目(2011BAB03B07) （2011BAB03B07）
国家留学基金委公派联合培养项目National Technology R&D Program in the 12th Five Years Plan of China (2011BAB03B07) （2011BAB03B07）
China Scholarship Council (CSC) for Financial Support （CSC）
