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>

scholarly journals Porous nickel doped titanium dioxide nanoparticles with improved visible light photocatalytic activity

2020 ◽  
Vol 2 (3) ◽  
pp. 1352-1357 ◽  
Author(s):  
Bingbing Guan ◽  
Jie Yu ◽  
Siyao Guo ◽  
Shen Yu ◽  
Song Han
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Titanium Dioxide Nanoparticles ◽  
Porous Nickel ◽  
Ni Doping ◽  
Doped Titanium Dioxide ◽  
Visible Light Photocatalytic

A green hydrothermal synthesis route to prepare a porous Ni doped TiO2 nanostructured photocatalyst has been developed in this research. Ni doping can increase the visible light photocatalytic performance of TiO2 with cycle capability of 5 times.

Synthesis of BiOI@(BiO)2CO3 facet coupling heterostructures toward efficient visible-light photocatalytic properties

2015 ◽  
Vol 17 (36) ◽  
pp. 23489-23495 ◽  
Author(s):  
Chenghua Ding ◽  
Fengpu Cao ◽  
Liqun Ye ◽  
Kecheng Liu ◽  
Haiquan Xie ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Properties ◽  
Visible Light Photocatalytic

BiOI@(BiO)2CO3 facet coupling heterostructures were synthesized, and showed much higher photocatalytic activity than BiOI and (BiO)2CO3 under visible light.

Preparation of WOx-TiO2 and the Photocatalytic Activity under Visible Irradiation

2007 ◽  
Vol 336-338 ◽  
pp. 1979-1982 ◽  
Author(s):  
Hai Yan Song ◽  
Hong Fu Jiang ◽  
Xing Qin Liu ◽  
Yin Zhu Jiang ◽  
Guang Yao Meng
Keyword(s):  
Aqueous Solution ◽  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Tungsten Oxide ◽  
Tungsten Oxides ◽  
Tio2 Particles ◽  
Visible Light Range ◽  
Visible Irradiation ◽  
Doped Titanium Dioxide

Nanocrystalline tungsten oxide doped titanium dioxide (WOx-TiO2) powders were prepared by TiCl4 hydrolysis and characterized by XRD, XPS, UV–Vis absorption spectra and TEM. Results showed that WOx not only hindered the growth of TiO2 particles but also greatly increased the transformation temperature (>800 oC) from anatase to rutile during sintering; the dominant fraction of tungsten oxides was non-stoichiometric tungsten oxide (WxOy) with Wn+ (4<n<6), which could easily substitute Ti4+ in the lattice of TiO2. The light absorption band of TiO2 changed from the near UV to the visible light range (2.68 eV in 1.0 %WOx-TiO2) because of the tungsten impurity energy level induced by WxTi1-xO2. The photocatalysis experiments demonstrated that the MB in aqueous solution was successfully degraded within 1h using WOx-TiO2 with an optimal WOx dosage of 1% under visible light irradiation.

Hierarchical microspheres: in situ assembly of CdS quantum dots on Cd2SnO4 nanosheets with enhanced visible light photocatalytic properties

RSC Advances ◽  
2015 ◽  
Vol 5 (102) ◽  
pp. 83922-83930 ◽  
Author(s):  
Guimin Zhang ◽  
Zhengyi Fu ◽  
Yucheng Wang ◽  
Hao Wang ◽  
Zheng Xie
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Properties ◽  
Cds Quantum Dots ◽  
Solvothermal Route ◽  
Hierarchical Microspheres ◽  
One Step ◽  
Visible Light Photocatalytic

Hierarchical CdS/Cd2SnO4 microspheres with enhanced photocatalytic activity were successfully synthesized by one step solvothermal route.

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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