摘要
纳米TiO_(2)作为光催化剂的代表,具有无毒无害、化学稳定性高、环保、廉价等特点,其在降解甲醛等方面备受关注。但在使用过程中存在难回收,光量子效率低,禁带宽,且只对紫外光响应导致对太阳光的利用率低等缺点,严重限制了其在光降解方面的应用。如何提高TiO_(2)对可见光的响应以及光催化性能一直是研究的热点和重点。介绍了纳米TiO_(2)的光催化机制以及光催化过程的影响因素,着重阐述了纳米TiO_(2)的改性方法和负载材料的选择,最后总结了纳米TiO_(2)光催化过程中存在的问题,并对今后的研究方向进行了展望。
As a representative of photocatalyst,nano-TiO_(2) has the characteristics of non-toxic,harmless,high chemical stability,environmental protection and low cost.It has attracted much attention in the degradation of formaldehyde.However,due to the shortcomings of difficult recovery,low quantum efficiency,forbidden bandwidth,and low utilization of sunlight due to only response to ultraviolet light,its application in photodegradation is seriously limited.How to improve the response of TiO_(2) to visible light and photocatalytic performance has always been the focus of research.The photocatalytic mechanism of nano-TiO_(2) and the influencing factors of photocatalytic process are introduced.The modification methods of nano-TiO_(2) and the selection of loading materials are emphatically expounded.Finally,the problems existing in the photocatalytic process of nano-TiO_(2) are summarized and the future research direction is prospected.
作者
冉岚
RAN Lan(Henan Technical College of Construction,Zhengzhou 450000,China)
出处
《河南化工》
CAS
2024年第10期27-30,共4页
Henan Chemical Industry
关键词
负载
二氧化钛
降解
甲醛
surpport
nano-TiO_(2)
degradation
formaldehyde
作者简介
冉岚(1981-),女,副教授,从事建筑材料及光催化降解涂料的制备及性能研究工作,E-mail:annarl@163.com。
