摘要
以四氯化钛为钛源采用溶胶凝胶法制备了介孔TiO_2材料,并对所制备的材料采用不同浓度的酸碱溶液进行了水热处理。通过SEM、XRD、N_2/吸附-脱附等检测手段对样品进行了表征。以氙灯(500 W)为光源,亚甲基蓝为目标降解物,考察了样品的光催化性能。结果表明:6 mol/L NaOH水热处理后的介孔TiO2对亚甲基蓝的吸附及光催化降解效果都有很大提高,且pH变化对光催化降解影响不大。
The mesoporous TiO2 were synthesized by a sol-gel process using titanium tetrachloride as a Ti source. The mesoporous TiO2 were treated with different concentrations of acid and alkali solution. The samples were characterized by SEM, XRD, N2/ad- sorption-desorption. The photocatalytic performance of the samples were investigated by degradation of methylene blue under a xenon lamp （500 W） irradition. The results indicated that, mesoporous TiO2 treated after 6 mol/L NaOH has the better adsorption and pho-tocatalytic degradation activity to methylene blue, and the change of pH has little influence to the photocataytic activity of the modi-fied mesoporous TiO2.
出处
《化学研究与应用》
CSCD
北大核心
2017年第11期1747-1750,共4页
Chemical Research and Application
基金
纺织工业联合会科技计划项目(2015053)
国家自然科学基金重点项目(U1501253)
西安工程大学学科建设项目(107090817)
关键词
介孔TIO2
水热处理
光催化降解
mesoporous TiO2
hydrothermal treatment
photocatalytic degradation
