Layered by layered construction of three novel ZnCo-LDHs/g-C 3 N 4 for the removal of sunset yellow by adsorption-photocatalytic process.

Autor: Jie Z; School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou, People's Republic of China., Yang L; School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou, People's Republic of China., Huiyuan T; School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou, People's Republic of China., Mengyan X; School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou, People's Republic of China., Xiuhong D; Clinical Laboratory Medicine, Henan Medical College, Zhengzhou, People's Republic of China., Zehua W; School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou, People's Republic of China., Chunguang L; School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou, People's Republic of China., Xianying D; School of Medicine, Huanghe Science and Technology University, Zhengzhou, People's Republic of China. dxynumber@163.com.; Institute of Chemistry, Henan Academy of Sciences, Zhengzhou, Henan, 450002, People's Republic of China. dxynumber@163.com., Jiehu C; School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou, People's Republic of China. cuijiehu@163.com.; Henan Engineering Research Center for Ceramic Materials Interface, Zhengzhou University of Aeronautics, Zhengzhou, People's Republic of China. cuijiehu@163.com.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2023 Sep; Vol. 30 (45), pp. 100450-100465. Date of Electronic Publication: 2023 Aug 26.
DOI: 10.1007/s11356-023-29347-2
Abstrakt: The removal of organic dyes has attracted attention by adsorption-photocatalytic synergetic process in water treatment technology. Three novel ZnCo-LDHs/g-C 3 N 4 were successfully prepared for the first time by layered construction technique through the hydrolysis of triethanolamine in this paper. They exhibited high specific surface area which facilitates the adsorption of sunset yellow (SY) from solution to catalyst surface. All the target pollutant dyes are very effectively removed by the three ZnCo-LDHs/g-C 3 N 4 composites through synergetic effect of adsorption and photocatalysis process under UV irradiation (λ = 365 nm). The order of synergistic degradation effect for SY is as follows: ZnCo-LDHs/g-C 3 N 4 -3 (99.6%) > ZnCo-LDHs/g-C 3 N 4 -2 (99.5%) > ZnCo-LDHs/g-C 3 N 4 -1 (99.3%) > pure g-C 3 N 4 (77.4%) > pure ZnCo-LDHs (44.2.6%) at the initial concentration of 75 mg L -1 . ZnCo-LDHs/g-C 3 N 4 -3 has the largest k value (0.0284 min -1 ) in SY degradation, which is 2.8 times that of g-C 3 N 4 . ZnCo-LDHs/g-C 3 N 4 -3 is a very promising adsorption-photocatalyst for the removal of SY from wastewater. The electron spin resonance experiments demonstrate that OH·, 1 O 2 , and O 2 - are the dominant active species and oxides SY together. This result demonstrates that the three ZnCo-LDHs/g-C 3 N 4 have practical applications as efficient adsorption-photocatalytic materials and also provides a synergetic strategy for the removal of SY wastewater.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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