MoS2/reduced graphene oxide hybrid with CdS nanoparticles as a visible light-driven photocatalyst for the reduction of 4-nitrophenol

Journal of Hazardous Materials
Wen-Chao PengXiao-Yan Li

Abstract

Photocatalytic reduction of nitroaromatic compounds to aromatic amines using visible light is an attractive process that utilizes sunlight as the energy source for the chemical conversions. Herewith we synthesized a composite material consisting of CdS nanoparticles grown on the surface of MoS2/reduced graphene oxide (rGO) hybrid as a novel photocatalyst for the reduction of 4-nitrophenol (4-NP). The CdS-MoS2/rGO composite is shown as a high-performance visible light-driven photocatalyst. Even without a noble-metal cocatalyst, the catalyst exhibited a great activity under visible light irradiation for the reduction of 4-NP to much less toxic 4-aminophenol (4-AP) with ammonium formate as the sacrificial agent. Composite CdS-0.03(MoS2/0.01rGO) was found to be the most effective photocatalyst for 4-NP reduction. The high photocatalytic performance is apparently resulted from the synergetic functions of MoS2 and graphene in the composite, i.e. the cocatalysts serve as both the active adsorption sites for 4-NP and electron collectors for the separation of electron-hole pairs generated by CdS nanoparticles. The laboratory results show that the CdS-MoS2/rGO composite is a low-cost and stable photocatalyst for effective reduction and d...Continue Reading

Citations

Nov 14, 2019·Journal of Microencapsulation·Jayachandrabal Balachandramohan, Thirugnanasambandam Sivasankar
May 8, 2020·Environmental Science and Pollution Research International·Ying ChenWenchao Peng
Jan 18, 2020·ACS Applied Materials & Interfaces·Benteng SunJian Tian
Sep 30, 2021·Chemistry : a European Journal·Konstantinos KostelenosDimitrios Tasis

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