In situ anion-exchange synthesis and photocatalytic activity of AgBr/Ag2O heterostructure

•AgBr/Ag2O heterostructures were synthesized by a simple in situ anion-exchange route.•The synthesized AgBr/Ag2O-5 exhibited excellent visible-light catalytic activity.•AgBr/Ag2O heterostructure is helpful to inhibit the recombination of photoinduced carriers. AgBr/Ag2O heterostructure photocatalyst...

Full description

Saved in:
Bibliographic Details
Published in:Applied surface science 2015-06, Vol.341, p.190-195
Main Authors: Cao, Yuhui, Li, Qiuye, Xing, Yangyang, Zong, Lanlan, Yang, Jianjun
Format: Article
Language:English
Subjects:
Ag2O
AgBr
Diffraction
Heterostructure
Heterostructures
Methyl orange
Particulate composites
Photocatalysis
Photocatalytic
Reflectance
Spectrometers
Visible light
X-ray photoelectron spectroscopy
X-rays
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•AgBr/Ag2O heterostructures were synthesized by a simple in situ anion-exchange route.•The synthesized AgBr/Ag2O-5 exhibited excellent visible-light catalytic activity.•AgBr/Ag2O heterostructure is helpful to inhibit the recombination of photoinduced carriers. AgBr/Ag2O heterostructure photocatalysts were synthesized by a simple in situ anion-exchange route. The ratio of AgBr and Ag2O in the composites could be easily controlled by adjusting the concentration of NaBr solution. The AgBr/Ag2O-5 heterostructure exhibited a much higher photocatalytic activity than the pure AgBr and Ag2O particles in photodegradation of methyl orange (MO) under visible light irradiation. On the basis of the characterization by X-ray diffraction, photoluminescence (XRD), X-ray photoelectron spectroscope (XPS), and UV–vis diffuse reflectance spectra (DRS), a mechanism was proposed to account for the enhanced photocatalytic activity of AgBr/Ag2O heterostructure.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2015.02.174