251. Facile synthesis of a robust visible-light-driven AgCl/WO3 composite microrod photocatalyst.
- Author
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Yu, Changlin, Chen, Fanyun, Liu, Zhen, Yang, Kai, Ji, Hongbing, Li, Dehao, Xie, Wenyu, and Li, Shaoyu
- Subjects
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ENVIRONMENTAL remediation , *ORGANIC dyes , *TUNGSTEN trioxide , *MOLARS , *NANORODS - Abstract
A series of robust AgCl/WO 3 composite microrods (0.1–0.2 μ m) with different Ag/W molar ratios (0.25, 0.50, 0.75, 1.00, 1.25) were synthesized via hydrothermal-calcination process. The obtained samples were characterized by XRD, SEM, TEM, FT-IR, UV-vis DRS, PL, BET, Raman, transient TPRT and EIS. The photocatalytic test for organic dyes degradation showed that AgCl/WO 3 microrods possess much higher photocatalytic activities and stability than bare AgCl and WO 3. With optimal AgCl/WO 3 molar ratio (0.75 ∼ 1), 2 ∼ 5 times increase in dye decomposition efficiency was obtained over AgCl/WO 3 microrods. The formation of intimate WO 3 /AgCl heterojuction (interface) largely enhanced the separation efficiency of photogenerated carriers. This investigation suggested that AgCl/WO 3 microrods could a promising photocatalyst for environmental remediation. Image 1 • 100 ∼ 200 nm AgCl/WO3 composite nanorods were synthesized. • With molar ratio of 0.75 ∼ 1(AgCl/WO3), 2 ∼ 5 times increase in activity was obtained. • The WO3/AgCl interface boosted the separation of photo-induced carriers. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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