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Phosphorus- and Sulfur-Codoped g-C3N4: Facile Preparation, Mechanism Insight, and Application as Efficient Photocatalyst for Tetracycline and Methyl Orange Degradation under Visible Light Irradiation
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-06-14 00:00:00 , DOI: 10.1021/acssuschemeng.7b00559 Longbo Jiang 1, 2 , Xingzhong Yuan 1, 2 , Guangming Zeng 1, 2 , Xiaohong Chen 3 , Zhibin Wu 1, 2 , Jie Liang 1, 2 , Jin Zhang 1, 2 , Hui Wang 1, 2 , Hou Wang 4
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-06-14 00:00:00 , DOI: 10.1021/acssuschemeng.7b00559 Longbo Jiang 1, 2 , Xingzhong Yuan 1, 2 , Guangming Zeng 1, 2 , Xiaohong Chen 3 , Zhibin Wu 1, 2 , Jie Liang 1, 2 , Jin Zhang 1, 2 , Hui Wang 1, 2 , Hou Wang 4
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Phosphorus- and sulfur-codoped graphitic carbon nitride has been successfully synthesized by in situ thermal copolymerization of hexachlorocyclotriphosphazene and thiourea. The phosphorus doping, together with the sulfur doping, would enhance light trapping, surface area, and charge separation, making it serve as a more efficient photocatalyst than its pure g-C3N4 and single-doped g-C3N4 counterpart for the removal of tetracycline (TC) and methyl orange (MO). The optimum photocatalytic activities of a P-, S-codoped g-C3N4 sample for the degradation of TC and MO were about 5.9 times and 7.1 times higher than that of individual g-C3N4, respectively. Furthermore, the optimum TOC removal reached 70.33% and 55.37% for TC and MO within 120 min, respectively. The introduction of a P atom and S atom could significantly change the electronic property of g-C3N4 and suppress the recombination of photogenerated charges. Moreover, the defects in the framework of samples caused by the doping of P and S could serve as centers to trap the photoinduced electrons, thus inhibiting the charge recombination and improving its photocatalytic performance.
中文翻译：
磷和硫掺杂的gC 3 N 4：可见光辐照下四环素和甲基橙降解的简便制备，机理研究及其作为高效光催化剂的应用
通过六氯环三磷腈与硫脲的原位热共聚已成功合成了磷和硫掺杂的石墨氮化碳。磷掺杂与硫掺杂一起将增强光捕获，表面积和电荷分离，使其比纯gC 3 N 4和单掺杂gC 3 N 4对应物更有效的光催化剂，可去除磷。四环素（TC）和甲基橙（MO）。P，S掺杂的gC 3 N 4样品对TC和MO的最佳光催化活性分别约为单个gC 3 N 4的5.9倍和7.1倍， 分别。此外，在120分钟内，TC和MO的最佳TOC去除率分别达到70.33％和55.37％。P原子和S原子的引入可以显着改变gC 3 N 4的电子性质并抑制光生电荷的复合。此外，由P和S的掺杂引起的样品框架中的缺陷可以作为俘获光生电子的中心，从而抑制电荷复合并改善其光催化性能。
更新日期：2017-06-28
中文翻译：
磷和硫掺杂的gC 3 N 4：可见光辐照下四环素和甲基橙降解的简便制备，机理研究及其作为高效光催化剂的应用
通过六氯环三磷腈与硫脲的原位热共聚已成功合成了磷和硫掺杂的石墨氮化碳。磷掺杂与硫掺杂一起将增强光捕获，表面积和电荷分离，使其比纯gC 3 N 4和单掺杂gC 3 N 4对应物更有效的光催化剂，可去除磷。四环素（TC）和甲基橙（MO）。P，S掺杂的gC 3 N 4样品对TC和MO的最佳光催化活性分别约为单个gC 3 N 4的5.9倍和7.1倍， 分别。此外，在120分钟内，TC和MO的最佳TOC去除率分别达到70.33％和55.37％。P原子和S原子的引入可以显着改变gC 3 N 4的电子性质并抑制光生电荷的复合。此外，由P和S的掺杂引起的样品框架中的缺陷可以作为俘获光生电子的中心，从而抑制电荷复合并改善其光催化性能。
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