Journal article 1470 views
Bi-phasic titanium dioxide nanoparticles doped with nitrogen and neodymium for enhanced photocatalysis
,
Joseph C. Bear,
Paul D. McNaughter,
James McGettrick ,
Trystan Watson ,
Cecile Charbonneau ,
Paul O'Brien,
Andrew Barron ,
Charlie Dunnill
Nanoscale, Volume: 7, Issue: 42, Pages: 17735 - 17744
Swansea University Authors:
Virginia Gomez , James McGettrick , Trystan Watson , Cecile Charbonneau , Andrew Barron , Charlie Dunnill
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DOI (Published version): 10.1039/c5nr06025g
Abstract
Bi-phasic or multi-phasic composite nanoparticles for use in photocatalysis have been produced by a new synthetic approach. Sol–gel methods are used to deposit multiple layers of active material onto soluble substrates. In this work, a layer of rutile (TiO2) was deposited onto sodium chloride pellet...
| Published in: | Nanoscale |
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| ISSN: | 2040-3364 |
| Published: |
2015
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa26175 |
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| Abstract: |
Bi-phasic or multi-phasic composite nanoparticles for use in photocatalysis have been produced by a new synthetic approach. Sol–gel methods are used to deposit multiple layers of active material onto soluble substrates. In this work, a layer of rutile (TiO2) was deposited onto sodium chloride pellets followed by an annealing step and a layer of anatase. After dissolving the substrate, bi-phasic nanoparticles containing half anatase and half rutile TiO2; with “Janus-like” characteristics are obtained. Nitrogen and neodymium doping of the materials were observed to enhance the photocatalytic properties both under UV and white light irradiation. The unique advantage of this synthetic method is the ability to systematically dope separate sides of the nanoparticles. Nitrogen doping was found to be most effective on the anatase side of the nanoparticle while neodymium was found to be most effective on the rutile side. Rhodamine B dye was effectively photodegraded by co-doped particles under white light. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
42 |
| Start Page: |
17735 |
| End Page: |
17744 |