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Materials 2018, 11(5), 791; https://doi.org/10.3390/ma11050791

Synthesis and Broadband Spectra Photocatalytic Properties of Bi2O2(CO3)1−xSx

1
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
2
China Astronaut Research and Training Center, Beijing 100094, China
3
High-Tech Institute of Xi’an, Xi’an 710025, China
*
Author to whom correspondence should be addressed.
Received: 31 March 2018 / Revised: 29 April 2018 / Accepted: 3 May 2018 / Published: 14 May 2018
(This article belongs to the Special Issue Novel Photoactive Materials)
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Abstract

High efficiency photocatalyst Bi2O2(CO3)1−xSx was synthesized conveniently with chemical bath precipitation using Bi2O2CO3 as the precursor. The microstructures of the samples are systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS) and UV-Vis spectroscopy; the optical and photocatalytic properties are carefully tested as well. The content of S, which was tuned through the controlling of the precipitation process, was verified to have an intense effect over the photocatalytic properties. A nearly saturated S ratio and the best photocatalytic performance were observed in specimens with the most S content. Our study reveals that, with negligible influence of the morphology and crystal structure, Bi2O2(CO3)1−xSx possessed a broadened optical absorption regionfromultraviolet to visible light, and enhanced photocatalytic activity in comparison to precursor Bi2O2CO3 in photocatalytic degradation of Congo Red aqueous solution. View Full-Text
Keywords: Bi2O2CO3; Bi2O2(CO3)1−xSx; broadband spectra; photocatalysis Bi2O2CO3; Bi2O2(CO3)1−xSx; broadband spectra; photocatalysis
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Ding, J.; Wang, H.; Xu, H.; Qiao, L.; Luo, Y.; Lin, Y.; Nan, C. Synthesis and Broadband Spectra Photocatalytic Properties of Bi2O2(CO3)1−xSx. Materials 2018, 11, 791.

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