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

doi:10.11896/cldb.21120162

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (3119KB)
Export: BibTeX | EndNote (RIS)

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.

Key words： graphitic carbon nitride (g-C₃N₄) density functional theory photocatalysis pharmaceutical wastewater sulfachloropyridazine

Published: Online: 2022-10-26

CLC number:

X52

Fund:National Key Research and Development Program of China (2021YFA1202500), Beijing Nova Program (Z191100001119054) and the National Natural Science Foundation of China (21906001).

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	HUANG Taobo
	XIE Chenghan
	LI Fan
	WANG Yifeng
	LIU Wen

Cite this article:

HUANG Taobo,XIE Chenghan,LI Fan, et al. Photocatalytic Degradation of Sulfachloropyridazine in Water by Flower-like 2D Carbon Nitride Under Simulated Solar Light[J]. Materials Reports, 2022, 36(20): 21120162-6.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.21120162 OR http://www.mater-rep.com/EN/Y2022/V36/I20/21120162

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.