Photocatalytic Degradation of Sulfachloropyridazine in Water by Flower-like 2D Carbon Nitride Under Simulated Solar Light
HUANG Taobo1,2, XIE Chenghan1, LI Fan1,2, WANG Yifeng1, LIU Wen1,2,*
1 The Key Laboratory of Water and Sediment Sciences (Ministry of Education), College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China 2 State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, Peking University, Beijing 100871, China
Abstract: Supermolecules were prepared using melamine and cyanuric acid as precursors through self-assembly process in dimethyl sulfoxide, which were then undertaken thermal polycondensation reaction to synthesize a two-dimensional (2D) photocatalyst with flower-like morphology. Various characterizations, including scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and photoelectrochemical measurements, indicate that the fabricated photocatalyst is graphitic carbon nitride (g-C3N4, SCN). In addition, compared with the bulk g-C3N4 prepared by traditional thermal polycondensation method, SCN exhibites a higher light absorption capability and lower bandgap due to its ultrathin and uniform structure composition. Moreover, density functional theory (DFT) calculation deeply reveals the mechanism of the photocatalytic reactions on SCN. The unique ultrathin carbon nitride sheet and channel structure of SCN can suppress the recombination rate of electron-hole pairs. Sulfachloropyridazine (SCP), a common active pharmaceutical pollutant in wastewater, was taken as the target pollutant in this study. After 45 min irradiation under simulated solar light by SCN, the removal efficiency of SCP reaches up to 100%, and the pseudo first-order kinetic constant (k=0.085 min-1) of SCP degradation is about twice that of bulk g-C3N4. This study provides a theoretical guidance for development of photocatalysis technology which can be applied to the purification of pharmaceuticals contaminated wastewater, and also provides a reference for development of new photocatalysts.
作者简介: 黄韬博,北京大学环境科学与工程学院刘文教授团队研究生。2018年获得河海大学工学学士学位。目前研究主要专注于水处理(PPCP)、环境纳米技术的研究,并通过量子化学方法讨论水处理和环境纳米材料的内在机理。在Water Research、Chemical Engineering Journal、Journal of Hazardous Mate-rials、Water等SCI期刊上发表论文10余篇。 刘文,北京大学环境科学与工程学院教授、博士研究生导师。国家级青年人才入选者,国家重点研发计划项目(青年)首席科学家,北京大学环境纳米实验室主任。2009年毕业于南开大学,获环境工程学士学位;2014年毕业于北京大学,获环境工程博士学位;2014年8月至2017年9月先后在美国奥本大学和佐治亚理工学院从事博士后研究。目前主要从事环境纳米技术、水污染控制工程等方面的研究工作。在国内外期刊上发表学术论文200余篇,其中SCI收录180余篇,包括以第一/通讯作者在Journal of the American Chemical Society、Environmental Science & Technology、Water Research等期刊上发表的论文。入选美国斯坦福大学发布的2020—2022年世界排名前2%科学家排行榜 “年度影响力”榜单,以及全球学者库评出的2021—2022年“全球顶尖前10万科学家名单”。
引用本文:
黄韬博, 谢成瀚, 李璠, 王奕沣, 刘文. 花状二维氮化碳在模拟太阳光下光催化降解水中磺胺氯哒嗪机理研究[J]. 材料导报, 2022, 36(20): 21120162-6.
HUANG Taobo, XIE Chenghan, LI Fan, WANG Yifeng, LIU Wen. Photocatalytic Degradation of Sulfachloropyridazine in Water by Flower-like 2D Carbon Nitride Under Simulated Solar Light. Materials Reports, 2022, 36(20): 21120162-6.
1 Ji H, Du P, Zhao D, et al. Applied Catalysis B: Environmental, 2020, 263,118357. 2 Lui A, Yu C. Materials Reports, 2018, 32(Z2),195(in Chinese). 刘爱平, 郁超. 材料导报, 2018, 32(Z2), 195. 3 Tao X, Pan P, Huang T, et al. Chemical Engineering Journal, 2020, 395, 125186. 4 Liu W, Li Y, Liu F, et al. Water Research, 2019, 151,8. 5 Lu X J, Wang Y, Zhang X Y, et al. Journal of Hazardous Materials, 2018, 341, 10. 6 Zheng L L, Wang D, Wu S L, et al. Journal of Materials Chemistry A, 2020, 8(47), 25425. 7 Dong H, Guo X, Yang C, et al. Applied Catalysis B: Environmental, 2018, 230, 65. 8 Liang Z, Xue Y, Wang X, et al. Chemical Engineering Journal, 2021, 421, 130016. 9 Liang Z, Meng X, Xue Y, et al. Journal of Colloid and Interface Science, 2021, 598, 172. 10 Whitesides G M, Mathias J P, Seto C T. Science, 1991, 254(5036), 1312. 11 Jun Y S, Lee E Z, Wang X, et al. Advanced Functional Materials, 2013, 23(29), 3661. 12 Jiang X H, Zhang L S, Liu H Y, et al. Angewandte Chemie International Edition, 2020, 59(51), 23112. 13 Frisch M J, Trucks G W, Schlegel H B, et al. Gaussian 16 Rev. C.01.Wallingford, CT, 2016. 14 Zhang D, Qi J, Ji H, et al. Chemical Engineering Journal, 2020, 400,125918. 15 Jun Y S, Lee E Z, Wang X, et al. Advanced Functional Materials, 2013, 23(29), 3661. 16 Qin Q, Gao X, Wu X, et al. Materials Letters, 2019, 256, 126623. 17 Liang J, Zhang W, Zhao Z, et al. Journal of Hazardous Materials, 2021, 416, 125936. 18 Xiao J, Han Q, Cao H, et al. ACS Catalysis, 2019, 9(10), 8852. 19 Ong W J, Tan L L, Ng Y H, et al. Chemical Reviews, 2016, 116(12), 7159. 20 Sun M, Li J, Dong F, et al. Journal of Huazhong Agricultural University, 2020, 39(5), 17(in Chinese). 孙明禄, 李解元, 董帆. 华中农业大学学报, 2020, 39(5), 17. 21 Chang F, Huang T, Chen L, et al. Environmental Chemistry, 2020, 39(3), 593(in Chinese). 常方, 黄韬博, 陈龙, 等. 环境化学, 2020, 39(3), 593. 22 Li Y, Lyu K, Ho W, et al. Applied Catalysis B: Environmental, 2017, 202, 611. 23 Liu X, Li P, Zhu X, et al. Physical Review A, 2017, 95(3), 033421. 24 Li S, Huang T, Du P, et al. Water Research, 2020, 185, 116286. 25 Pifer A D, Fairey J L. Water Research, 2012, 46(9), 2927. 26 Hou J, Yang M, Wang D, et al. Advanced Energy Materials, 2020, 10(18), 1904152.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2022, Vol. 36 
