天津工业大学学报2023，Vol.42Issue(6)：47-53,7.DOI:10.3969/j.issn.1671-024x.2023.06.007
玻纤负载TiO2/g-C3N4光催化膜的制备及降解染料性能
Fabrication and dye degradation performances of glass fiber supported TiO2/g-C3N4 catalyst film
摘要
Abstract
In order to solve the problems of low catalytic efficiency,the unrecyclability and possible secondary pollution of powder photocatalysts,glass fiber-supported TiO2/g-C3N4 catalyst film(denoted as TCNGF)was fabricated by impregnation method.Homogeneous crack-free film formed on the glass fiber by self-assembled TiO2 and g-C3N4 nanoparticles through electrostatic interaction.Gravimetric determination gave the catalyst loading content of 4％.The degradation experiments show that using TCNGF as the catalyst under mimic sunlight,the degradation rate of 10 mg/L RhB solution reaches 98％within 40 min.The degradation rates of four-cycle degradation reactions are all higher than 99％without any flocculent precipitation in the solution.These results reveale the high catalytic efficiency,excellent adhesion fastness and cycling stability of the catalyst.The catalytic results also demonstrate that increasing the mass ratio of TiO2:g-C3N4 within a certain range elevate the amount of heterojunction to augment the photo-induced active free radicals and accelerate the dye degradation rate.The initial dye concentration has no detectable effect on the photocatalytic degradation performance of TCNGF.Free radical capture experiments have proved that superoxide radicals(·O2-)and hydroxyl radicals(·OH)are the main active species in the photocatalytic reaction process,and the study of the photocatalytic reaction mechanism has shown that TCNGF belongs to the Z-type photocatalytic system.关键词
浸渍法/TiO2/g-C3N4/玻璃纤维/光催化剂/染料降解/光催化膜Key words
dipping method/TiO2/g-C3N4/glass fiber/photocatalysts/dye degradation/photocatalytic film分类
通用工业技术引用本文复制引用
高海燕,安仁德,赵永男..玻纤负载TiO2/g-C3N4光催化膜的制备及降解染料性能[J].天津工业大学学报,2023,42(6):47-53,7.基金项目
国家自然科学基金资助项目(21703152) （21703152）
天津市教委科研计划项目(自然科学)(2018KJ197) （自然科学）
南开大学先进能源材料化学教育部重点实验室开放课题 （）
