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Issue 18, 2015
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In situ fabrication of Ag3PO4/TiO2 nanotube heterojunctions with enhanced visible-light photocatalytic activity

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Abstract

Ag3PO4/TiO2 nanotube (TNT) heterojunctions were fabricated via a facile in situ growth method. Hemispherical Ag3PO4 nanocrystals were uniformly grown on the TNT surface, and their size was confined to 5–10 nm. A joint area was distinctly observed between the Ag3PO4 nanocrystals and TNT, indicating the formation of a Ag3PO4/TNT heterojunction. Compared with pure Ag3PO4, the Ag3PO4/TNT heterojunction possesses more active sites, less bulk defects, more efficient electron–hole separation, as well as better dye adsorption properties, and thus exhibits a significantly elevated photocatalytic activity for Rhodamine B (RhB) degradation. The study of the reactive species demonstrates that the photocatalytic degradation of RhB over the Ag3PO4/TNT heterojunction is primarily driven by both photogenerated h+ and ˙OH radicals. This easily-fabricated Ag3PO4/TNT heterojunction with promising photocatalytic activity may find potential applications in energy and environmental related areas.

Graphical abstract: In situ fabrication of Ag3PO4/TiO2 nanotube heterojunctions with enhanced visible-light photocatalytic activity

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Supplementary files

Article information


Submitted
14 Dec 2014
Accepted
26 Mar 2015
First published
01 Apr 2015

Phys. Chem. Chem. Phys., 2015,17, 12199-12206
Article type
Paper
Author version available

In situ fabrication of Ag3PO4/TiO2 nanotube heterojunctions with enhanced visible-light photocatalytic activity

Z. W. Tong, D. Yang, Y. Y. Sun, Y. Tian and Z. Y. Jiang, Phys. Chem. Chem. Phys., 2015, 17, 12199
DOI: 10.1039/C4CP05851H

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