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Issue 25, 2015
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Novel AgI-decorated β-Bi2O3 nanosheet heterostructured Z-scheme photocatalysts for efficient degradation of organic pollutants with enhanced performance

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Abstract

The low photocatalytic activity of single semiconductor photocatalysts mainly originates from their fast recombination of photogenerated electron–hole pairs. Constructing nanosheet-based composite photocatalysts is an effective way to enhance the charge separation efficiency of photogenerated electron–hole pairs. In this work, AgI-decorated β-Bi2O3 nanosheet heterostructured photocatalysts were prepared by a facile method. The as-obtained AgI/β-Bi2O3 heterostructures exhibited enhanced visible-light-driven photocatalytic activity towards the degradation of methyl orange (MO) and tetracycline hydrochloride (TC) in aqueous solution. The optimum photocatalytic activity of 20%-AgI/β-Bi2O3 for the degradation of MO was about 4.1 and 6.2 times higher than that of AgI and β-Bi2O3. The photocatalytic activity enhancement of AgI/β-Bi2O3 heterostructures could be ascribed to the formation of a Z-scheme system, which results in the efficient space separation of photo-induced charge carriers.

Graphical abstract: Novel AgI-decorated β-Bi2O3 nanosheet heterostructured Z-scheme photocatalysts for efficient degradation of organic pollutants with enhanced performance

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Supplementary files

Article information


Submitted
21 Jan 2015
Accepted
14 May 2015
First published
15 May 2015

Dalton Trans., 2015,44, 11582-11591
Article type
Paper

Novel AgI-decorated β-Bi2O3 nanosheet heterostructured Z-scheme photocatalysts for efficient degradation of organic pollutants with enhanced performance

Z. Zhang, D. Jiang, C. Xing, L. Chen, M. Chen and M. He, Dalton Trans., 2015, 44, 11582
DOI: 10.1039/C5DT00298B

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