负载型纳米TiO_(2)可见光催化降解甲醛研究进展  

Research Progress of Visible Light Catalytic Degradation of Formaldehyde by Surpported Nano-TiO_(2)

作　　者：冉岚 RAN Lan(Henan Technical College of Construction,Zhengzhou 450000,China)

机构地区：[1]河南建筑职业技术学院,河南郑州450000

出　　处：《河南化工》2024年第10期27-30,共4页Henan Chemical Industry

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.

关 键 词：负载 二氧化钛 降解 甲醛 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ426.98[化学工程]