期刊
JOURNAL OF CLEANER PRODUCTION
卷 329, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2021.129723
关键词
Photocatalysis; Self-floating; TiO2; Oxygen vacancy defect; Surface plasmon resonance
资金
- National Natural Science Foundation of China [52172206, 21871078]
- Natural Science Foundation of Heilongjiang Province [JQ2019B001]
- Natural Science Foundation of Shandong Province [ZR202103020770]
- Heilongjiang Postdoctoral Startup Fund [LBH-Q14135]
- Heilongjiang University Science Fund for Distinguished Young Scholars [JCL201802]
- Heilongjiang Provincial Institutions of Higher Learning Basic Research Funds Basic Research Projects [KJCX201909]
- Heilongjiang Touyan Innovation Team Program
The self-floating biomass charcoal supported flower-like plasmon Ag/C, N co-doped defective TiO2 photocatalyst shows excellent visible-light-driven photocatalytic performance, with a photocatalytic degradation ratio of 2,4-dichlorophenol and hydrogen evolution significantly higher than pristine TiO2, attributed to the synergistic effect of the surface plasmon resonance effect of Ag nanoparticles, efficient C, N co-doping, and formation of oxygen vacancy defects. The long-term stability of this novel self-floating photocatalyst indicates its potential practical applications.
A self-floating biomass charcoal supported flower-like plasmon Ag/C, N co-doped defective TiO2 photocatalyst is fabricated by hydrothermal, calcination and photo-deposition strategies. Biomass charcoal, Ag nanoparticles, oxygen vacancy defects and C, N co-doping all favor to extend the photoresponse to visible light region. The biomass charcoal plays the role of doping and floating supporter, which can make it float on surface of water and effectively improve the collection of sunlight. The resultant plasmon Ag/C, N co-doped defective TiO2 photocatalyst exhibits excellent visible-light-driven photocatalytic performance, in which the photocatalytic degra- dation ratio of 2,4-dichlorophenol and hydrogen evolution are up to 95% and 1269 mu mol h(-1)g(-1), respectively, several times higher than that of pristine TiO2. It can be ascribed to the synergistic effect of surface plasmon resonance (SPR) effect of Ag nanoparticles, the efficient C, N co-doping and formation of oxygen vacancy defects promotes spatial charge separation and enhances visible light absorption. In addition, the long-term stability of this novel self-floating photocatalyst implies the potential practical applications.
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