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A facile approach to synthesize oxygen doped g-C3N4 with enhanced visible light activity under anoxic conditions via oxygen-plasma treatment

Abstract

Photocatalytic oxidation technology to the anoxic removal of organic pollutants that exist under some oxygen-free conditions is attractive but challenging. In this work, oxygen doped graphitic carbon nitride (g-C3N4) with outstanding visible light activity under anoxic condition is synthesized via oxygen-plasma treatment for the first time. Oxygen doping does not influence the structure of g-C3N4 but changes its morphology, enhances the SBET, decreases the band gap energy and increases the separation efficiency of photogenerated electrons and holes, which increases the anoxic photocatalytic RhB degradation constants by approximately 6 times. After plasma treatment, doped oxygen not only increases the adsorption ability of g-C3N4 but also captures the photogenerated electrons to reserve photogenerated holes for RhB degradation under anoxic conditions. This study provides new insight into the design and fabrication of oxygen-free photocatalysts.

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Publication details

The article was received on 04 Dec 2017, accepted on 15 Feb 2018 and first published on 15 Feb 2018


Article type: Paper
DOI: 10.1039/C7NJ04760F
Citation: New J. Chem., 2018, Accepted Manuscript
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    A facile approach to synthesize oxygen doped g-C3N4 with enhanced visible light activity under anoxic conditions via oxygen-plasma treatment

    S. Hu, X. qu, J. Bai, P. Li, G. Lu and X. Kang, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C7NJ04760F

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