期刊
MATERIALS RESEARCH BULLETIN
卷 84, 期 -, 页码 46-56出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2016.07.003
关键词
Semiconductors; Chemical synthesis; X-ray diffraction; Optical properties; Catalytic properties
资金
- Natural Sciences and Engineering Research Council of Canada
- China Scholarship Council
To improve the photocatalytic activity of graphitic carbon nitride (g-C3N4), surface hydroxylation was employed as an efficient modification method. Characterizations were conducted to examine the formation of surface hydroxyl groups, including Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and diffuse -reflection spectroscopy (DRS). The improvement of photocatalytic activity brought by the surface hydroxylation modification was examined by measuring the degradation of Rhodamine B under visible light irradiation. Both theoretical and experimental explanations were given concerning the formation of photo-generated active radicals. This study sheds light on the benefits of surface hydroxylation modification, as well as on the differences in the roles of active radical species. (C) 2016 Elsevier Ltd. All rights reserved.
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