中北大学学报（自然科学版）2025，Vol.46Issue(3)：333-348,16.DOI:10.62756/jnuc.issn.1673-3193.2024.10.0002
振动流化床原子层沉积可控制备WO3/TiO2 NPs及其光催化性能研究
Controllable Preparation of WO3/TiO2 NPs via Vibrating Fluidized Bed Atomic Layer Deposition and Its Photocatalytic Performance
摘要
Abstract
The combination of WO3 and TiO2 can form type-Ⅱ heterojunction at the interface to improve the light response range and carrier separation efficiency of TiO2 and enhances the surface acidity of TiO2 nanoparticles.In this study,ultrathin,dense and uniform WO3 films were deposited on TiO2 photocata-lysts using a homemade atmospheric-pressure vibration fluidized bed atomic layer deposition reactor(FB-ALD),and the results were compared with samples prepared via liquid-phase impregnation.The results show that the 1-W/Ti(500)sample prepared by the impregnation method,with a 1％W loading,exhib-ited the best MB degradation performance under UV light,is 1.75 times than that of blank TiO2.In con-trast,the 5-cycles W/Ti(500)photocatalyst prepared via FB-ALD,with a W/Ti molar ratio of only～0.1％,achieves 3.3 times photocatalytic activity than that of blank TiO2.From the TEM images,it can be observed that the growth rate of the ALD WO3 film in this study is approximately 0.07 nm/cycle.By controlling the number of ALD cycles,the deposition amount of WO3 can be precisely regulated,fully leveraging the interfacial effects.The FB-ALD method achieves higher photocatalytic performance with less W loading,and does not produce waste water,and no need washing and drying post-treatment,which can effectively reduce the production cost of the photocatalyst.The homemade atmospheric pres-sure FB-ALD setup with low cost and large particle processing capacity,which is more suitable for large amount of nanoparticle precise modification and has a broad application potential.关键词
TiO2/WO3/流态化/原子层沉积/光催化Key words
TiO2/WO3/fluidization/atomic layer deposition/photocatalysis分类
化学工程引用本文复制引用
娄惠芳,牛炳康,吉江丽,康宏源,巢征驿,李佳高,董浩浩,郭嫣然,郭婧..振动流化床原子层沉积可控制备WO3/TiO2 NPs及其光催化性能研究[J].中北大学学报（自然科学版）,2025,46(3):333-348,16.基金项目
国家自然科学基金青年基金(21808214) （21808214）
山西省回国留学人员科研资助项目(2023-126) （2023-126）
山西省留学回国人员择优资助项目(20220013) （20220013）
