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Type: Journal article
Title: Phosphorous doped carbon nitride nanobelts for photodegradation of emerging contaminants and hydrogen evolution
Author: Wang, S.
He, F.
Zhao, X.
Zhang, J.
Ao, Z.
Wu, H.
Yin, Y.
Shi, L.
Xu, X.
Zhao, C.
Wang, S.
Sun, H.
Citation: Applied Catalysis B: Environmental, 2019; 257:117931-1-117931-11
Publisher: Elsevier
Issue Date: 2019
ISSN: 0926-3373
Statement of
Shuaijun Wang, Fengting He, Xiaoli Zhao, Jinqiang Zhang, Zhimin Ao, Hong Wu, Yu Yin, Lei Shi, Xinyuan Xu, Chaocheng Zhao, Shaobin Wang, Hongqi Sun
Abstract: Photocatalysis has demonstrated great potentials for both environmental remediation and green energy production. In this study, a simple solvothermal template-free approach was employed for the first time to synthesize phosphorous doped carbon nitride nanobelt (PCNNB). Advanced characterizations, for instance, ¹³C NMR, ³¹P NMR, and XPS results indicated that P was substitutionally doped at the corner-carbon of the carbon nitride frameworks. The introduction of P dopants inhibited the polymerization between NH₂ groups within PCNNB, enabling the decrease in nanobelt width for the exposure of more active sites. Therefore, the optimized P-CN-NB-2 (derived from 0.2 mM H₃PO₄) rendered enhanced p-hydroxybenzoic acid (HBA) degradation nearly 66-fold higher than bulk g-C₃N₄, among the most efficient g-C₃N₄-based photocatalysts as reported. In addition, the P-CN-NB-1 (derived from 0.02 mM H₃PO₄) exhibited about 2 times higher H₂ evolution rate than CNNB. Density functional theory (DFT) calculations were also conducted to provide insights into the mechanism.
Keywords: Photocatalysis; carbon nitride; P-doping; HBA degradation; hydrogen production
Rights: © 2019 Elsevier B.V. All rights reserved.
DOI: 10.1016/j.apcatb.2019.117931
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