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- Title
Synthesis and Broadband Spectra Photocatalytic Properties of Bi2O2(CO3)1−xSx.
- Authors
Ding, Junping; Wang, Huanchun; Xu, Haomin; Qiao, Lina; Luo, Yidong; Lin, Yuanhua; Nan, Cewen
- Abstract
High efficiency photocatalyst Bi2O2(CO3)1−<italic>x</italic>S<italic>x</italic> 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 <italic>S</italic>, which was tuned through the controlling of the precipitation process, was verified to have an intense effect over the photocatalytic properties. A nearly saturated <italic>S</italic> ratio and the best photocatalytic performance were observed in specimens with the most <italic>S</italic> content. Our study reveals that, with negligible influence of the morphology and crystal structure, Bi2O2(CO3)1−<italic>x</italic>S<italic>x</italic> 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.
- Subjects
PHOTOCATALYSIS; PHOTOCATALYSTS; MICROSTRUCTURE; LIGHT absorption; AQUEOUS solutions; CRYSTAL structure
- Publication
Materials (1996-1944), 2018, Vol 11, Issue 5, p791
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma11050791