光催化
材料科学
锐钛矿
涂层
纳米复合材料
化学工程
纳米颗粒
催化作用
亚甲蓝
碳化
复合材料
纳米技术
有机化学
化学
扫描电子显微镜
工程类
作者
Chunyan He,Jialin He,Sainan Cui,Xiujuan Fan,S. G. Li,Yaqi Yang,Xi Tan,Xiaofeng Zhang,Jie Mao,Liuyan Zhang,Changguang Deng
出处
期刊:Nanomaterials
[MDPI AG]
日期:2023-12-12
卷期号:13 (24): 3123-3123
摘要
Photocatalytic coatings can degrade volatile organic compounds into non-toxic products, which has drawn the attention of scholars around the world. However, the pollution of dust on the coating adversely affects the photocatalytic efficiency and service life of the coating. Here, a series of TiO2-polyfluoroalkoxy (PFA) coatings with different contents of PFA were fabricated by suspension plasma spraying technology. The results demonstrate that the hybrid coatings contain a large number of circular and ellipsoidal nanoparticles and a porous micron-nano structure due to the inclusion of PFA. According to the optimized thermal spraying process parameters, TiO2 nanoparticles were partially melted to retain most of the anatase phases, whereas PFA did not undergo significant carbonization. As compared to the TiO2 coating, the static contact angle of the composite coating doped with 25 wt.% PFA increased from 28.2° to 134.1°. In addition, PFA strongly adsorbs methylene blue, resulting in a greater involvement of methylene blue molecules in the catalyst, where the catalytic rate of hybrid coatings is up to 95%. The presented nanocomposite coatings possess excellent photocatalytic and self-cleaning properties and are expected to find wider practical applications in the field of photocatalysis.
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