Facile construction of g-C3N4/ZnIn2S4 nanocomposites for enhance Cr(VI) photocatalytic reduction

Liqin Yang; Jun Zhao; Zheng Wang; Lili Wang; Zhiju Zhao; Siyu Li; Guanghua Li; Zhenyu Cai

doi:10.1016/j.saa.2022.121184

Facile construction of g-C₃N₄/ZnIn₂S₄ nanocomposites for enhance Cr(VI) photocatalytic reduction

Spectrochim Acta A Mol Biomol Spectrosc. 2022 Aug 5:276:121184. doi: 10.1016/j.saa.2022.121184. Epub 2022 Mar 24.

Authors

Liqin Yang¹, Jun Zhao², Zheng Wang³, Lili Wang², Zhiju Zhao⁴, Siyu Li², Guanghua Li⁵, Zhenyu Cai⁶

Affiliations

¹ School of Physics and Electronic Engineering, Xingtai University, Xingtai 054001, Hebei, China; Functional Polymer Materials R&D and Engineering Application Technology Innovation Center of Hebei, Xingtai 050041, Hebei, China.
² Functional Polymer Materials R&D and Engineering Application Technology Innovation Center of Hebei, Xingtai 050041, Hebei, China.
³ School of Physics and Electronic Engineering, Xingtai University, Xingtai 054001, Hebei, China.
⁴ Functional Polymer Materials R&D and Engineering Application Technology Innovation Center of Hebei, Xingtai 050041, Hebei, China. Electronic address: zhaozj2005xt@sina.com.
⁵ Guangxi Key Laboratory of Petrochemical Resource Processing＆Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, China. Electronic address: lighuas@gxu.edu.cn.
⁶ Functional Polymer Materials R&D and Engineering Application Technology Innovation Center of Hebei, Xingtai 050041, Hebei, China. Electronic address: caizy1963@163.com.

PMID: 35364412
DOI: 10.1016/j.saa.2022.121184

Abstract

Hexavalent chromium (Cr(VI)) is the nether-most toxic environmental pollutants. In this work, g-C₃N₄/ZnIn₂S₄ photocatalyst was constructed to investigate their potential application for economical visible-light photocatalytic reduction of Cr(VI). Photocatalysts phase and microstructure were analyzed by XRD, SEM and TEM techniques. Elements were confirmed by EDS and XPS techniques. Optical properties were revealed by DRS and emission spectra. The generation and activeness of photogenerated electron-hole pairs were revealed by the emission spectra, photocurrent response and Nyquist plots. The result is perfectly displayed that g-C₃N₄/ZnIn₂S₄ has potential application in photocatalysis field and g-C₃N₄/ZnIn₂S₄ has higher photocatalytic occupation than that of g-C₃N₄ and ZnIn₂S₄.

Keywords: Cr(VI); Photocatalytic activity; Pollutants; g-C(3)N(4)/ZnIn(2)S(4).