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Vol. 26 No. 24 (2014)

Copyright (c) 2014 Y.F. Zhao1, J. Zhang2, Y.J. Wang2

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This work is licensed under a Creative Commons Attribution 4.0 International License.

A Convenient Method to Prepare Novel Alkali Metal Potassium Doped Carbon Nitride Photocatalyst with Tunable Band Structure

https://doi.org/10.14233/ajchem.2014.18505
Y.F. Zhao1
1School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun 113001, P.R. China 2Liaoning Key Laboratory of Petroleum & Chemical Industry, Liaoning Shihua University, Fushun 113001, P.R. China *Corresponding author: E-mail: yanfengzhaolnpu@163.com
J. Zhang2
1School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun 113001, P.R. China 2Liaoning Key Laboratory of Petroleum & Chemical Industry, Liaoning Shihua University, Fushun 113001, P.R. China *Corresponding author: E-mail: yanfengzhaolnpu@163.com
Y.J. Wang2
1School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun 113001, P.R. China 2Liaoning Key Laboratory of Petroleum & Chemical Industry, Liaoning Shihua University, Fushun 113001, P.R. China *Corresponding author: E-mail: yanfengzhaolnpu@163.com

Corresponding Author(s) : Y.F. Zhao1

Asian Journal of Chemistry, Vol. 26 No. 24 (2014)

Abstract

A novel alkali metal ion K+ doped carbon nitride photocatalyst with a tunable band structure was prepared using dicyandiamide monomer and potassium hydrate as precursor. X-ray diffraction, UV-visible, FT-IR and XPS were used to characterize the prepared catalysts. The valence band and conduction band potentials were obviously altered by changing the potassium concentration. Besides, the addition of potassium inhibited the crystal growth of graphitic carbon nitride and increased the separation rate of photogenerated electrons and holes. The visible-light-driven Rhodamine-B photodegradation performance was significantly improved after K+ doping. The possible doping site and influence mechanism of potassium concentration on photocatalytic performance was proposed.

Keywords

g-C3N4 Potassium doping Tunable band structure Visible light.
Zhao1, Y., Zhang2, J., & Wang2, Y. (2014). A Convenient Method to Prepare Novel Alkali Metal Potassium Doped Carbon Nitride Photocatalyst with Tunable Band Structure. Asian Journal of Chemistry, 26(24), 8612–8616. https://doi.org/10.14233/ajchem.2014.18505
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