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Issue 27, 2017, Issue in Progress
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Titania nanotube stabilized BiOCl nanoparticles in visible-light photocatalysis

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Abstract

Photocatalysis is a green approach in environmental organic pollutant decomposition. Lately, considerable improvement in the activity of photocatalysts has been achieved with the realization of p–n heterostructures due to the lifetime extension of the photogenerated charge carriers. Herein, we report a facile synthesis approach for decorating n-type titanate nanotubes with p-type V–VI–VII compound semiconductor BiOCl nanoparticles. It is well-known that BiOX (X = Cl, Br, I) materials form nanometer-thick platelets, which can eventually assemble into micrometer size flower-like 3D structures. Here, we demonstrate that the tubular titanate support can stabilize BiOCl on its surface in the form of nanoparticles measuring a few nanometers in diameter, instead of forming the well-known bismuth-oxyhalide nanoflowers. Subsequent calcination at 400 °C transforms the pristine titanate structures into one-dimensional anatase nanotubes, along with the formation of a heterojunction at the interface of the emerging Bi2Ti2O7 and anatase phases. The resulting nanocomposite shows activity in visible-light photocatalytic test reactions.

Graphical abstract: Titania nanotube stabilized BiOCl nanoparticles in visible-light photocatalysis

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Supplementary files

Article information


Submitted
20 Dec 2016
Accepted
07 Mar 2017
First published
14 Mar 2017

This article is Open Access

RSC Adv., 2017,7, 16410-16422
Article type
Paper

Titania nanotube stabilized BiOCl nanoparticles in visible-light photocatalysis

B. Buchholcz, H. Haspel, A. Oszkó, A. Kukovecz and Z. Kónya, RSC Adv., 2017, 7, 16410
DOI: 10.1039/C6RA28490F

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    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
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    [Original citation] - Published by The Royal Society of Chemistry.

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