NDLI: Photocatalytic degradation of organic dyes with H$_{3}$PW$_{12}$O$_{40}$/TiO$_{2}$–SiO$

Content Provider	Springer Nature Link
Author	Yang, Shui Jin Xu, Yu Lin Gong, Wen Peng Huang, Yong Kui Wang, Guo Hong Yang, Yun Feng, Chuan Qi
Copyright Year	2015
Abstract	H$_{3}$PW$_{12}$O$_{40}$/TiO$_{2}$–SiO$_{2}$ was synthesized by impregnation method which significantly improved the catalytic activity under simulated natural light. The properties of the samples were characterized by Fourier transform infrared spectra (FTIR), X-ray powder diffraction pattern (XRD), Scanning electron micrographs (SEM), and Zeta potential. Degradation of methyl violet was used as a probe reaction to explore the influencing factors on the photodegradation reaction. The results show that the optimal conditions are as follows: initial concentration of methyl violet of 10 mg·L$^{−1}$, pH of 3.0, catalyst dosage of 2.9 g·L$^{−1}$, and light irradiation time of 2.5 h. Under these conditions, the degradation rate of methyl violet is 95.4 %. The reaction on photodegradation for methyl violet can be expressed as the first-order kinetic model, and the possible mechanism for the photocatalysis under simulated natural light is suggested. After used continuously for five times, the catalyst keeps the inherent photocatalytic activity for degradation of dyes. The photodegradation of methyl orange, methyl red, naphthol green B, and methylene blue was also tested, and the degradation rate of dyes can reach 81 %–100 %.
Starting Page	797
Ending Page	803
Page Count	7
File Format	PDF
ISSN	10010521
Journal	Rare Metals
Volume Number	35
Issue Number	10
e-ISSN	18677185
Language	English
Publisher	Nonferrous Metals Society of China
Publisher Date	2015-06-09
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Heteropoly acid TiO$_{2}$ SiO$_{2}$ Photocatalytic degradation Organic dye Metallic Materials Nanotechnology Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Inorganic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Physical and Theoretical Chemistry Condensed Matter Physics

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