Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 10, Issue 3, Pages 687-693Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201403217
Keywords
BiOBr; composite materials; photocatalysis; photodegradation; silver; visible light
Categories
Funding
- National Natural Science Foundation of China [20903048, 21275065]
- Fundamental Research Funds for the Central Universities [JUSRP51314B]
- MOE & SAFEA for the 111 Project [B13025]
Ask authors/readers for more resources
A novel visible-light-driven AgBr-Ag-BiOBr photocatalyst was synthesized by a facile hydrothermal method. Taking advantage of both p-n heterojunctions and localized surface plasmon resonance, the p-metal-n structure exhibited a superior performance concerning degradation of methyl orange under visible-light irradiation (lambda> 420 nm). A possible photodegradation mechanism in the presence of AgBr-Ag-BiOBr composites was proposed, and the radical species involved in the degradation reaction were investigated. HO2-/O-2(-) played the same important role as (OH)-O-center dot in the AgBr-Ag-BiOBr photocatalytic system, and both the electron and hole were fully used for degradation of organic pollutants. A dual role of metallic Ag in the photocatalysis was proposed, one being surface plasmon resonance and the other being an electron-hole bridge. Due to the distinctive p-metal-n structure, the visible-light absorption, the separation of photogenerated carriers and the photocatalysis efficiency were greatly enhanced.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available