Construction of a Novel Step-scheme CdS/Pt/BiMoO Photocatalyst for Efficient Photocatalytic Fuel Denitrification

Overview

Journal RSC Adv

Publisher Royal Society of Chemistry

Specialty Chemistry

Date 2022 Apr 28

PMID 35479778

Authors

Weineng Hu

Guiyang Yan

Ruowen Liang

Mengmeng Jiang

Renkun Huang

Yuzhou Xia

Lu Chen

Yi Lu

Affiliations

Soon will be listed here.

Abstract

Construction of step-scheme (S-scheme) heterojunction (HJ) structures is an excellent strategy to achieve efficient photogenerated carrier separation and retain strong redox ability. Recently, the development of efficient S-scheme HJ photocatalysts for the degradation of environmental organic pollutants has attracted considerable attention. In this work, a novel S-scheme CdS/Pt/BiMoO (CPB) photocatalyst was prepared for the first time by sonochemical and solvothermal methods. By anchoring Pt nanoparticles (NPs) at the interface between CdS nanorods (NRs) and BiMoO nanosheets (NSs), the migration of photogenerated electron-hole pairs along the stepped path was achieved. The ternary CPB samples were characterized by various analytical techniques, and their photocatalytic performance was investigated by conducting simulated fuel denitrification under visible-light irradiation. It was found that the CPB-4 composites exhibited the highest pyridine degradation activity, which reached 94% after 4 h of visible-light irradiation. The superior photocatalytic performance of the CPB-4 composite could be attributed to the synergistic effect of the Pt NPs and BiMoO NRs on the photocatalytic degradation as well as to the introduction of Pt and BiMoO, which led to an excellent response and large specific surface area of the CPB-4 composite. Lastly, the bridging role of the Pt NPs introduced into the S-scheme system was also notable, as it effectively improved the separation and transfer of the CdS/BiMoO interfaces for the photogenerated electron-hole pairs while retaining strong redox ability.

Citing Articles

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