Sandwich-structured AgCl@Ag@TiO 2 with excellent visible-light photocatalytic activity for organic pollutant degradation and E. coli K12 inactivation

Sandwich-structured AgCl@Ag@TiO 2 with excellent visible-light photocatalytic activity for... 1 Introduction</h5> In recent years, with the rapid development of industry, a large amount of industrial wastewater containing various environmental pollutants such as dyes, pharmaceuticals, and even pathogenic microorganisms, has been released into water sources [1,2] . More and more regions around the world are suffering from water supply problems [1,2] . In this context, semiconductor photocatalysis has received increasing attention as a promising solution to solve water pollution problems by decomposing pollutants and bacteria [3–7] . Amongst various semiconductor materials, TiO 2 has been widely studied because of its nontoxicity, highly chemical stability, and low cost [8,9] . However, the practical applications of TiO 2 have been suppressed by its two drawbacks, one of which is the poor solar efficiency that is determined by its wide band gap; the other is the low quantum yield that arises from the rapid recombination of photo-generated electrons and holes. To solve the problems, the researchers have explored many strategies such as doping with metals [10,11] or non-metals [12,13] , deposition of noble metals [14] , coupling with other semiconductors [15] , and anchoring organic sensitizers [16,17] . However, these efforts still cannot totally meet the requirement of water treatment driven http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Catalysis B: Environmental Elsevier

Sandwich-structured AgCl@Ag@TiO 2 with excellent visible-light photocatalytic activity for organic pollutant degradation and E. coli K12 inactivation

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Publisher
Elsevier
Copyright
Copyright © 2014 Elsevier B.V.
ISSN
0926-3373
D.O.I.
10.1016/j.apcatb.2014.04.008
Publisher site
See Article on Publisher Site

Abstract

1 Introduction</h5> In recent years, with the rapid development of industry, a large amount of industrial wastewater containing various environmental pollutants such as dyes, pharmaceuticals, and even pathogenic microorganisms, has been released into water sources [1,2] . More and more regions around the world are suffering from water supply problems [1,2] . In this context, semiconductor photocatalysis has received increasing attention as a promising solution to solve water pollution problems by decomposing pollutants and bacteria [3–7] . Amongst various semiconductor materials, TiO 2 has been widely studied because of its nontoxicity, highly chemical stability, and low cost [8,9] . However, the practical applications of TiO 2 have been suppressed by its two drawbacks, one of which is the poor solar efficiency that is determined by its wide band gap; the other is the low quantum yield that arises from the rapid recombination of photo-generated electrons and holes. To solve the problems, the researchers have explored many strategies such as doping with metals [10,11] or non-metals [12,13] , deposition of noble metals [14] , coupling with other semiconductors [15] , and anchoring organic sensitizers [16,17] . However, these efforts still cannot totally meet the requirement of water treatment driven

Journal

Applied Catalysis B: EnvironmentalElsevier

Published: Oct 1, 2014

References

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