Synthesis and Broadband Spectra Photocatalytic Properties of Bi₂O₂(CO₃)1-x Sx

Materials
Junping DingCewen Nan

Abstract

High efficiency photocatalyst Bi₂O₂(CO₃)1-xS x 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-xS x 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.

References

Oct 20, 2006·The Journal of Physical Chemistry. B·Gang LiuHui-Ming Cheng
Jun 12, 2010·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Hefeng ChengYing Dai
Oct 6, 2011·Advanced Materials·Hua TongJinhua Ye
Jun 20, 2012·Physical Chemistry Chemical Physics : PCCP·Peng WangMyung-Hwan Whangbo
Jun 12, 2014·Journal of the American Chemical Society·Jiaguo YuMietek Jaroniec
Apr 5, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Chao ChangZailun Liu

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Citations

Dec 19, 2018·Materials·Maria Vittoria Diamanti

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Methods Mentioned

BETA
scanning
transmission electron microscopy
X-ray

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