Bridging and synergistic effect of the pyrochlore like Bi2Zr2O7 structure with robust CdCuS solid solution for durable photocatalytic removal of the organic pollutants. Issue 15 (2nd March 2020)

• Record Type: Journal Article
• Authors: Jayaraman, Venkatesan; Ayappan, Chinnadurai; Palanivel, Baskaran; Mani, Alagiri
• Is Part Of: RSC advances. Volume 10:Issue 15(2020)
• Page Start: 8880
• Page End: 8894
• Publication Date: 2020-03-02
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d0ra00644k
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Photocatalytic degradation mechanism for CdCuS solid solution supported pyrochlore like Bi2 Zr2 O7 . Abstract : Herein, a strong redox ability photocatalyst of CdCuS solid solution composited with pyrochlore like Bi2 Zr2 O7 has been fabricated by the simple hydrothermal method. The robust CdCuS solid solution materials perform the supporting role to the Bi2 Zr2 O7 nano materials. The structural, optical, valence and vibrational states of the prepared heterostructure materials were analyzed using various characterization techniques. The photocatalytic activity of the as-synthesized Bi2 Zr2 O7 /CdCuS heterostructure has been verified under direct solar light and ambient conditions. The synthesized Bi2 Zr2 O7 /CdCuS nano combination exhibits a better photocatalytic activity for the removal of methylene blue and 4-nitrophenol organic probe molecules. The heterostructure formation between the samples is confirmed by HRTEM analysis. The improved rate of the photocatalytic reaction of the samples is attributed to the formation of heterostructures at the interface. The close interfacial contact between the two materials discloses the effective charge transfer, which leads to suppressed charge carrier recombination. The enhanced photo catalytic activity of redox-mediator-free-Bi2 Zr2 O7 /CdCuS heterostructure, possibly will be credited to the robust redox ability and the several charge transfer channels in the tight contact. The chief radicals produced in the catalytic reduction reaction have been predicted by the scavenger trapping methods and the results are discussed in detail. The obtained information from this study on Bi2 Zr2 O7 /CdCuS delivers some new visions for the design of active photocatalysts with multiple benefits.