TiO2基光催化剂的负载改性方法研究进展
Research Progress of Modification Methods for TiO2-based Photocatalysts
刘贺津 1乔鹏 1朴锐 1王雪芹1
作者信息
- 1. 东北石油大学 化学化工学院,黑龙江 大庆 163318
- 折叠
摘要
TiO2 由于比表面积大、化学性质稳定、具有较高光催化活性等优点,在环境治理保护、光催化降解污染物等方面广泛应用.但其禁带宽度较大,只能吸收紫外光,且光生电子-空穴对再复合率较高,使其对太阳光的利用率大大降低,从而限制了其大规模的工业化应用.因此,如何进一步提高TiO2 半导体材料的光催化效果以及对太阳光的利用率备受研究者关注.对TiO2 的负载改性方法如非金属元素负载、金属元素负载、半导体复合改性以及染料敏化改性等方面的研究进展进行了综述.
Abstract
TiO2 is widely used in environmental protection and photocatalytic degradation of pollutants due to its large surface area,stable chemical properties and high photocatalytic activity.However,due to its large band gap,it can only absorb ultraviolet light,its utilization rate of sunlight is greatly reduced.In addition,the high recombination rate of photogenerated electron-hole pairs thus limits its large-scale industrial application.Therefore,how to further improve the photocatalytic effect of TiO2 and the corresponding utilization rate of sunlight has attracted much attention from researchers.In this paper,the research progress of modification methods for TiO2-based semiconductor materials was reviewed,such as non-metallic element supporting,metal element supporting,semiconductor composite modification and dye sensitization modification.
关键词
TiO2光催化剂/金属元素负载改性/非金属元素负载改性/半导体复合改性Key words
TiO2 photocatalyst/Metal element modification/Nonmetallic elements modification/Semiconductor composite modification引用本文复制引用
基金项目
国家自然科学基金青年基金(21905042)
出版年
2024
NETL
NSTL
万方数据