In Situ Synthesis of All-Solid-State Z-Scheme BiOBr0.3I0.7/Ag/AgI Photocatalysts with Enhanced Photocatalytic Activity Under Visible Light Irradiation

A series of novel visible light driven all-solid-state Z-scheme BiOBr 0.3 I 0.7 /Ag/AgI photocatalysts were synthesized by facile in situ precipitation and photo-reduction methods. Under visible light irradiation, the BiOBr 0.3 I 0.7 /Ag/AgI samples exhibited enhanced photocatalytic activity compare...

Full description

Saved in:
Bibliographic Details
Published in:Nanoscale research letters 2018-11, Vol.13 (1), p.1-8, Article 368
Main Authors: Lu, Junlin, Shang, Chaoqun, Meng, Qingguo, Lv, Haiqin, Chen, Zhihong, Liao, Hua, Li, Ming, Zhang, Yongguang, Jin, Mingliang, Yuan, Mingzhe, Wang, Xin, Zhou, Guofu
Format: Article
Language:English
Subjects:
BiOBr0.3I0.7/Ag/AgI
Catalytic activity
Chemistry and Materials Science
Current carriers
Dyes
Irradiation
Light irradiation
Materials Science
Migration
Molecular Medicine
Nano Express
Nanochemistry
Nanoparticles
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
Photocatalysis
Photocatalysts
Photocatalytic
Photodegradation
Silver
Solid state
Z-scheme
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:A series of novel visible light driven all-solid-state Z-scheme BiOBr 0.3 I 0.7 /Ag/AgI photocatalysts were synthesized by facile in situ precipitation and photo-reduction methods. Under visible light irradiation, the BiOBr 0.3 I 0.7 /Ag/AgI samples exhibited enhanced photocatalytic activity compared to BiOBr 0.3 I 0.7 and AgI in the degradation of methyl orange (MO). The optimal ratio of added elemental Ag was 15%, which degraded 89% of MO within 20 min. The enhanced photocatalytic activity of BiOBr 0.3 I 0.7 /Ag/AgI can be ascribed to the efficient separation of photo-generated electron–hole pairs through a Z-scheme charge-carrier migration pathway, in which Ag nanoparticles act as electron mediators. The mechanism study indicated that ·O 2 − and h + are active radicals for photocatalytic degradation and that a small amount of ·OH also participates in the photocatalytic degradation process.
ISSN:1931-7573
1556-276X
DOI:10.1186/s11671-018-2778-9