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Anatase/rutile bi-phasic titanium dioxide nanoparticles for photocatalytic applications enhanced by nitrogen doping and platinum nano-islands
被引:25
作者:

Bear, Joseph C.
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Swansea Univ, Energy Safety Res Inst ESRI, Coll Engn, Swansea SA1 8EN, W Glam, Wales Swansea Univ, Energy Safety Res Inst ESRI, Coll Engn, Swansea SA1 8EN, W Glam, Wales

Gomez, Virginia
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Swansea Univ, Energy Safety Res Inst ESRI, Coll Engn, Swansea SA1 8EN, W Glam, Wales Swansea Univ, Energy Safety Res Inst ESRI, Coll Engn, Swansea SA1 8EN, W Glam, Wales

Kefallinos, Nikolaos S.
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Swansea Univ, Energy Safety Res Inst ESRI, Coll Engn, Swansea SA1 8EN, W Glam, Wales Swansea Univ, Energy Safety Res Inst ESRI, Coll Engn, Swansea SA1 8EN, W Glam, Wales

McGettrick, James D.
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机构:
Swansea Univ, Coll Engn, Baglan Bay Innovat & Knowledge Ctr, SPECIFIC, Baglan SA12 7AX, Port Talbot, Wales Swansea Univ, Energy Safety Res Inst ESRI, Coll Engn, Swansea SA1 8EN, W Glam, Wales

Barron, Andrew R.
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Swansea Univ, Energy Safety Res Inst ESRI, Coll Engn, Swansea SA1 8EN, W Glam, Wales
Rice Univ, Dept Mat Sci & Nanoengn, Houston, TX 77005 USA Swansea Univ, Energy Safety Res Inst ESRI, Coll Engn, Swansea SA1 8EN, W Glam, Wales

Dunnill, Charles W.
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机构:
Swansea Univ, Energy Safety Res Inst ESRI, Coll Engn, Swansea SA1 8EN, W Glam, Wales Swansea Univ, Energy Safety Res Inst ESRI, Coll Engn, Swansea SA1 8EN, W Glam, Wales
机构:
[1] Swansea Univ, Energy Safety Res Inst ESRI, Coll Engn, Swansea SA1 8EN, W Glam, Wales
[2] Swansea Univ, Coll Engn, Baglan Bay Innovat & Knowledge Ctr, SPECIFIC, Baglan SA12 7AX, Port Talbot, Wales
[3] Rice Univ, Dept Mat Sci & Nanoengn, Houston, TX 77005 USA
关键词:
Titania;
Photocatalysis;
Bi-phasic;
Nanoparticle;
Water purification;
N-DOPED TIO2;
CHEMICAL-VAPOR-DEPOSITION;
VISIBLE-LIGHT;
SOL-GEL;
WATER-PURIFICATION;
QUANTUM DOTS;
RHODAMINE-B;
FILMS;
RUTILE;
DEGRADATION;
D O I:
10.1016/j.jcis.2015.08.027
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Titanium dioxide (TiO2) bi-phasic powders with individual particles containing an anatase and rutile hetero-junction have been prepared using a sequential layer sol gel deposition technique to soluble substrates. Sequential thin films of rutile and subsequently anatase TiO2 were deposited onto sodium chloride substrates yielding extremely fragile composite layered discs that fractured into "Janus-like" like powders on substrate dissolution. Nitrogen doped and platinum sputtered analogues were also prepared, and analysed for photocatalytic potential using the photodegradation of Rhodamine B, a model organic pollutant under UV and visible light irradiation. The materials were characterised using X-ray diffraction, X-ray photoelectron spectroscopy, energy dispersive X-ray spectroscopy, Raman spectroscopy and scanning electron microscopy. This paper sheds light on the relationship between anatase and rutile materials when in direct contact and demonstrates a robust method for the synthesis of bi-phasic nanoparticles, ostensibly of any two materials, for photocatalytic reactions or otherwise. (C) 2015 Elsevier Inc. All rights reserved.
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页码:29 / 35
页数:7
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