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

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.