NDLI: Low-cost and highly efficient composite visible light-driven Ag–AgBr/γ-Al<sub>2</sub>O<sub>3</sub> plasmonic photocatalyst for degrading organic pollutants

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Catalysis Science & Technology Vol - 2 Issue - 5

Catalysis Science & Technology Vol - 2 Issue - 4

Catalysis Science & Technology Vol - 2 Issue - 3

Catalysis Science & Technology Vol - 2 Issue - 2

Catalysis Science & Technology Vol -1

Low-cost and highly efficient composite visible light-driven Ag–AgBr/γ-Al₂O₃ plasmonic photocatalyst for degrading organic pollutants

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhao, Yanyan Kuai, Long Geng, Baoyou
Copyright Year	2012
Abstract	Visible light-driven photocatalysts have attracted a great deal of attention for their direct use of solar energy. In this paper, an efficient and low-cost visible light-driven composite photocatalyst, comprising of Ag–AgBr/γ-Al2O3 nanostructures, has been facilely prepared by a surfactant-controlled precipitation–deposition and subsequent light-driven route. Hollow flower-like γ-Al2O3 nanostructures was chosen as the support. CTAB controlled the size of the deposited nanoparticles in both the Br source and the surfactant. The microstructures, surface chemical composition, visible light-driven photocatalytic performance and mechanism have been investigated systematically by SEM, TEM, XPS and so forth. The Ag–AgBr nanoparticles were distributed uniformly on the surface of the hollow flower-like γ-Al2O3 nanostructures, whose specific surface area value reached 116.5 m2 g−1. The Ag–AgBr/γ-Al2O3 composite nanostructures exhibit photocatalytic advantages over pure Ag–AgBr nanoparticles, such as decomposing aromatic compounds and organic dyes within several minutes of visible light irradiation. They also have good stabilities meaning the photocatalytic activity seldom decreases even when used 5 times under visible light irradiation. Meanwhile, the amount of Ag–AgBr needed and the cost decreases significantly. Thus, the as-prepared composite photocatalyst, consisting of Ag–AgBr/γ-Al2O3 nanostructures, will be an efficient and low-cost material for the removal of organic pollutants under visible light irradiation.
Starting Page	1269
Ending Page	1274
Page Count	6
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	2
Issue Number	6
Journal	Catalysis Science & Technology
DOI	10.1039/c2cy20074k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Transmission electron microscopy Photocatalysis Solar energy Specific surface area Surfactant CTAB
Content Type	Text
Resource Type	Article
Subject	Catalysis

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