Gogoi, Himadri Priya and Bisoi, Gourab and Barman, Pranjit and Dehingia, Anurag and Das, Subhajit and Paul Chowdhury, Arpita (2023) Highly efficient and recyclable quaternary Ag/Ag3PO4-BiOBr-C3N4 composite fabrication for efficient solar-driven photocatalytic performance for anionic pollutant in an aqueous medium and mechanism insights. Optical Materials , 138. Art No-113712. ISSN 0925-3467

PDF - Published Version Restricted to Registered users only Download (9Mb) | Request a copy

Abstract

A simple chemical precipitation route to synthesize the quaternary composite under mild conditions is reported. The quaternary composite photocatalyst Ag/Ag3PO4-BiOBr-C3N4-1 band gap was tuned to 0.56 eV by varying the amount of C3N4 for efficient photocatalytic performance. The as-prepared photocatalysts were characterized by XRD, XPS, TEM, EDAX, BET, EIS, and UV-Vis DRS spectroscopy. The degradation of reactive red (RR 120) under visible-light illumination were evaluated. The surface plasmon resonance (SPR) effect of Ag nanoparticles enhances the absorption and utilization of visible light. The Ag/Ag3PO4-BiOBr-C3N4 composite exhibited 92.6% degradation efficiency with the removal rate 0.042 min-1 which is 5.2, 2.7 and 2.5 times greater compared to pristine Ag/Ag3PO4, BiOBr and C3N4 particles. The active species holes (h+), superoxide (center dot O2-) and hydroxyl (center dot OH) radicals were responsible for the degradation process. The 4 times of cycle experiments proved the relatively high stability of the synthesized photocatalyst. The quaternary Ag/Ag3PO4-BiOBr-C3N4 heterojunction can endorse enhanced redox capability. The faster interfacial transport was validated, for quaternary photocatalysts using the EIS Nyquist plot. The work has driven a significant guidance in designing photocatalysts with surface plasmon effect.

Item Type:	Article
Subjects:	Electronics
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	06 Oct 2023 12:21
Last Modified:	06 Oct 2023 12:21
URI:	http://cgcri.csircentral.net/id/eprint/5575

Actions (login required)

View Item