成都大学学报（自然科学版）2023，Vol.42Issue(4)：384-391,8.DOI:10.3969/j.issn.1004-5422.2023.04.009
典型稀土元素修饰的二氧化钛光催化性能研究进展
Research Progress on Photocatalytic Properties of TiO2 Modified with Typical Rare Earth Elements
摘要
Abstract
TiO2 has a wide band gap,and its band gap value is generally 3.0～3.2 eV,which limits its photoexcitation region to the ultraviolet region,and a large range of visible light and even near-infrared photons are not used.In addition,the high electron-hole pair recombination rate of TiO2 also leads to the reduced lifetime of its active photogenerated carriers,which limits the efficiency of TiO2 as a photocata-lyst.In order to solve these problems properly,the use of rare earth elements(lanthanides)to improve the surface morphology,crystal type,optical properties and photocatalytic performance of TiO2 have been stud-ied.This paper reviews the recent studies on the hot lanthanide elements used as TiO2 modification.It fo-cuses on how Ln elements modify TiO2 to improve its performance far beyond that of pure TiO2,and focu-ses on the application of Ln-TiO2 in photocatalysis,electronics and electrical appliances.The modification of rare earth elements can improve the photocatalytic efficiency of TiO2 by reducing the band gap,shifting the working wavelength of TiO2 from ultraviolet to visible region,inhibiting the transition from anatase phase to rutile phase,and weakening the recombination efficiency of photogenerated electron pairs.关键词
二氧化钛/稀土元素/光催化Key words
TiO2/rare earth elements/photocatalysis分类
化学化工引用本文复制引用
高健,邹彬妮,陈佳琪,宋慧瑾..典型稀土元素修饰的二氧化钛光催化性能研究进展[J].成都大学学报（自然科学版）,2023,42(4):384-391,8.基金项目
成都大学引进人才科研启动项目(2081921109) （2081921109）
成都大学研究生人才培养质量和教学改革项目(cdjgy2022034) （cdjgy2022034）
