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 inNanoscale research letters Vol. 13; no. 1; pp. 1 - 8
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 Journal Article
LanguageEnglish
Published New York Springer US 20.11.2018
Springer Nature B.V
SpringerOpen
Subjects
Online AccessGet full text

Cover

Loading…
More Information
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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1931-7573
1556-276X
DOI:10.1186/s11671-018-2778-9