Influence of Ag nanoparticles anchored on protonated g-C3N4-Bi2MoO6 nanocomposites for effective antibiotic and organic pollutant degradation

Govinda Raj, Muniyandi; Vijayakumar, Elayaperumal; Neppolian, Bernaurdshaw; Lakhera, Sandeep Kumar; Bosco, Aruljothy John

Abstract

The development of noble metal-anchored semiconductors for photocatalytic processes is now garnering interest for potential application to toxic pollutants as well as antibiotic degradation. Herein, we report novel Ag@p-g-C3N4-Bi2MoO6 nanocomposites synthesized by facile hydrothermal and calcination methods with a size of about 50 nm, exhibiting superior photocatalytic activity for charge separation. The resulting nanocomposites were evaluated by various physiochemical techniques such as X-ray diffraction, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, scanning electron microscopy, and high-resolution transmission electron microscopy. The charge transfer photogenerated carriers were confirmed by photoluminescence spectra and electrochemical impedance spectroscopy. The anchoring of Ag nanoparticles over p-g-C3N4/Bi2MoO6 decreased the band gap energy from 2.67 to 2.48 eV, to exhibit an abnormal increase in absorption of light towards the visible light region. The degradation performance of the nanocomposites in terms of antibiotic ciprofloxacin and rhodamine B degradation efficiency was measured 85 and 99.7% respectively. The superoxide radical anion O-2(-) played a significant role throughout the entire degradation process. Focusing on the probable mechanism based on the desirable results, the present work follows the heterostructure mechanism. Moreover, this work features the feasible applications of Ag@p-g-C3N4-Bi2MoO6 as a modified photocatalyst in the treatment of both domestic and industrial waste water.

Más información

Título según WOS: ID WOS:000678294800038 Not found in local WOS DB
Título de la Revista: RSC ADVANCES
Volumen: 11
Número: 41
Editorial: ROYAL SOC CHEMISTRY
Fecha de publicación: 2021
Página de inicio: 25511
Página final: 25523
DOI:

10.1039/d1ra02800f

Notas: ISI