Photocatalytic properties of metal and non-metal doped novel sub 10nm titanium dioxide nanoparticles on methyl orange

2013 ◽  
Vol 411 ◽  
pp. 169-172 ◽  
Author(s):  
Colm McManamon ◽  
Paul Delaney ◽  
Michael A. Morris
Keyword(s):  
Titanium Dioxide ◽  
Methyl Orange ◽  
Titanium Dioxide Nanoparticles ◽  
Photocatalytic Properties ◽  
Metal Doped

scholarly journals Preparation of Titanium Dioxide Nanoparticles Immobilized on Polyacrylonitrile Nanofibres for the Photodegradation of Methyl Orange

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Pardon Nyamukamba ◽  
Omobola Okoh ◽  
Lilian Tichagwa ◽  
Corinne Greyling
Keyword(s):  
Electron Microscopy ◽  
Titanium Dioxide ◽  
Methyl Orange ◽  
Organic Contaminants ◽  
Uv Light ◽  
Titanium Dioxide Nanoparticles ◽  
Xrd Analysis ◽  
Rutile Phase ◽  
Electrospinning Technique ◽  
Carbon Nanofibres

Herein, we describe the synthesis of titanium dioxide (TiO2) nanoparticles by the hydrolysis and condensation of titanium tetrachloride. The resulting nanoparticles were immobilized on polyacrylonitrile (PAN) based nanofibres by an electrospinning technique in order to allow simple isolation and reuse of titania semiconductor photocatalyst. The composite nanofibres were heat treated to convert the polymer nanofibres to carbon nanofibres and to convert amorphous TiO2to crystalline TiO2. X-ray diffraction (XRD) analysis showed that the rutile phase was the major phase and the equatorial peaks of PAN disappeared after heat treatment at 600°C. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) analysis confirmed that some TiO2nanoparticles were encapsulated whereas some were surface residing on the electrospun nanofibres. The TiO2nanoparticles were found to lower the cyclization temperature of PAN as indicated by differential scanning colorimetry (DSC) and differential thermal analysis (DTA). Photocatalytic studies on the degradation of methyl orange dye under UV light irradiation showed that composite nanofibres were capable of degrading organic contaminants in water. The carbon nanofibres with surface residing titanium dioxide nanoparticles (TiO2/CNF-SR) showed the highest photocatalytic activity (59.35% after 210 minutes) due to direct contact between the TiO2photocatalyst and methyl orange.

Optical and photocatalytic properties of lysozyme mediated titanium dioxide nanoparticles

Optik ◽  
2018 ◽  
Vol 154 ◽  
pp. 769-776 ◽  
Author(s):  
Deependra Das Mulmi ◽  
Biplav Dahal ◽  
Hak-Yong Kim ◽  
Mim Lal Nakarmi ◽  
Gopal Panthi
Keyword(s):  
Titanium Dioxide ◽  
Titanium Dioxide Nanoparticles ◽  
Photocatalytic Properties

scholarly journals Visible Light Photocatalytic Properties of Modified Titanium Dioxide Nanoparticles via Aluminium Treatment

2016 ◽  
Vol 11 (1) ◽  
pp. 40 ◽  
Author(s):  
Dessy Ariyanti ◽  
Junzhe Dong ◽  
Junye Dong ◽  
Wei Gao
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Titanium Dioxide Nanoparticles ◽  
Wide Bandgap ◽  
Reaction Engineering ◽  
Photocatalytic Properties ◽  
Light Spectrum ◽  
Visible Light Range ◽  
Visible Light Photocatalytic

<p>Titanium dioxide (TiO2) has gained much attentions for the last few decades due to its remarkable performance in photocatalysis and some other related properties. However, its wide bandgap (~3.2 eV) can only absorb UV energy which is only ~5% of solar light spectrum. The objective of this research was to improve the photocatalytic activity of TiO2 by improving the optical absorption to the visible light range. Here, colored TiO2 nanoparticles range from light to dark grey were prepared via aluminium treatment at the temperatures ranging from 400 to 600 oC. The modified TiO2 is able to absorb up to 50% of visible light (400-700 nm) and shows a relatively good photocatalytic activity in organic dye (Rhodamine B) degradation under visible light irradiation compared with the commercial TiO2. Copyright © 2016 BCREC GROUP. All rights reserved</p><p><em>Received: 10th November 2015; Revised: 7th January 2016; Accepted: 7th January 20 </em></p><p><strong>How to Cite</strong>: Ariyanti, D., Dong, J.Z., Dong, J.Y., Gao, W. (2016). Visible Light Photocatalytic Properties of Modified Titanium Dioxide Nanoparticles via Aluminium Treatment. <em>Bulletin of Chemical Reaction Engineering &amp; Catalysis</em>, 11 (1): 40-47. (doi:10.9767/bcrec.11.1.414.40-47)</p><p><strong>Permalink/DOI</strong>: <a href="http://dx.doi.org/10.9767/bcrec.11.1.414.40-47">http://dx.doi.org/10.9767/bcrec.11.1.414.40-47</a></p>

Metal Doped Titanium Dioxide: Synthesis and Effect of Metal Ions on Physico-Chemical and Photocatalytic Properties

2012 ◽  
Vol 734 ◽  
pp. 364-378 ◽  
Author(s):  
Sajid I. Mogal ◽  
Manish Mishra ◽  
Vimal G. Gandhi ◽  
Rajesh J. Tayade
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Metal Ions ◽  
Catalytic Properties ◽  
Oxide Semiconductor ◽  
Photocatalytic Properties ◽  
Visible Light Range ◽  
Physico Chemical ◽  
Doped Titanium Dioxide ◽  
Metal Doped

Titanium dioxide (Titania; TiO2) is one of the most widely used metal oxide semiconductor in the field of photocatalysis for removal of pollutants. It has been noted that titanium dioxide is a research friendly material as its physico-chemical and catalytic properties can be easily altered as per specific application. Since many years, researchers have tried to modify the properties of titanium dioxide by means of doping with metals and non-metals to improve its performance for photocatalytic degradation (PCD) applications. The doping of various metal ions like Ag, Ni, Co, Au, Cu, V, Ru, Fe, La, Pt, Cr, Ce, etc. in titanium dioxide have been found to be influencing the band gap, surface area, particle size, thermal property, etc. and therefore the photocatalytic activity in PCD. Moreover, photocatalytic activity of doped titanium dioxide has been observed in visible light range (i.e., at wavelength >400 nm). In this review, different synthesis route for doping of metal ions in titanium dioxide have been emphasised. The effect of metal dopant on the structural, textural and photocatalytic properties of titanium dioxide has been reviewed.

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