氮化碳
X射线光电子能谱
材料科学
光催化
光降解
掺杂剂
密度泛函理论
氮化物
兴奋剂
聚合
化学工程
环境修复
催化作用
碳纤维
纳米技术
化学
计算化学
污染
有机化学
光电子学
聚合物
生态学
图层(电子)
复合材料
工程类
复合数
生物
作者
Shuaijun Wang,Fengting He,Xiaoli Zhao,Jinqiang Zhang,Zhimin Ao,Hong Wu,Yin Yu,Lei Shi,Xinyuan Xu,Chaocheng Zhao,Shaobin Wang,Hongqi Sun
标识
DOI:10.1016/j.apcatb.2019.117931
摘要
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.
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