暴露高活性晶面TiO2的制备及其对甲基橙的光催化降解性能研究
Research on the preparation of TiO2 with exposed highly reactive crystalline surface and its photocatalytic degradation performance on methyl orange
于磊 1许文龙 2崔若彤 2刘会娥2
作者信息
- 1. 滨州市科技创新发展研究院,山东滨州 256600;中国石油大学(华东)重质油国家重点实验室,山东青岛 266580
- 2. 中国石油大学(华东)重质油国家重点实验室,山东青岛 266580
- 折叠
摘要
以硫酸钛[Ti(SO4)2]作钛源,以氢氟酸作形貌控制剂,通过一锅水热法制备了暴露高活性{001}晶面的TiO2光催化剂,采用SEM、TEM、XRD、XPS等方法对催化剂进行表征.以甲基橙染料为目标降解物,考察了原料的配比、反应温度、反应时间等因素对TiO2光催化剂降解效果的影响.结果表明,当F/Ti摩尔比为1.0,水热反应温度为180 ℃,水热反应时间为12 h时制备的TiO2催化剂性能最佳,对甲基橙的降解率可达到92.5％.TiO2对甲基橙的光催化降解符合一级动力学过程.
Abstract
A highly active TiO2 photocatalyst with exposed {001} crystal faces was prepared by a one pot hydrothermal method using titanium sulfate as the titanium source and hydrofluoric acid as the morphology control agent.The photocatalyst was characterized by SEM,TEM,XRD,XPS,etc.The effect of factors such as the ratio of raw materials,reaction temperature,and reaction time on the degradation efficiency of TiO2 photocatalyst was investigated with methyl orange dye as the target degradation product.The results showed that when F/Ti was 1.0,the hydrothermal reaction temperature was 180 ℃,and the hydrothermal reaction time was 12 h,the TiO2 sample prepared could achieve a degradation rate of 92.5％for methyl orange.The photocatalytic degradation of methyl orange by TiO2 follows a first-order kinetic process.
关键词
高活性晶面/TiO2/光催化/甲基橙/染料降解Key words
highly reactive crystalline surface/titanium dioxide/photocatalysis/methyl orange/dye deg-radation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据