Facile Formation of BiOCO/BiMoO Nanosheets for Visible Light-Driven Photocatalysis

Overview

Journal ACS Omega

Publisher American Chemical Society

Specialty Chemistry

Date 2019 Aug 29

PMID 31459597

Citations 7

Authors

Junlei Zhang

Zhendong Liu

Zhen Ma

Affiliations

Soon will be listed here.

Abstract

BiOCO/BiMoO heterojunction catalysts were prepared by treating BiMoO sheets with aqueous NaHCO solutions at room temperature. All the BiOCO/BiMoO heterojunctions exhibited higher activities than pristine BiMoO in the photocatalytic degradation of rhodamine B (RhB), methyl orange, and ciprofloxacin under visible-light irradiation, and the most active photocatalyst was found to be the one with a C/Bi molar ratio of ∼1/2.3. Relevant samples were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, N adsorption-desorption, Fourier transform infrared spectroscopy, and UV-vis spectroscopy. The higher activity of BiOCO/BiMoO than pristine BiMoO is explained by the enhanced separation and transfer of photogenerated electron/hole pairs, as verified by transient photocurrent densities, photoluminescence spectroscopy, and electrochemical impedance spectroscopy. Photogenerated holes (h) and superoxide radical anions (O ) were found to be the main active species. The good reusability of BiOCO/BiMoO was testified by cycling degradation of RhB and tetracycline hydrochloride.

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