Titanium dioxide-photocatalytic reduction of pentavalent and trivalent arsenic

2014 ◽  
pp. 820-824 ◽  
Author(s):  
M Litter ◽  
I Levy ◽  
F Requejo ◽  
M Mizrahi ◽  
G Ruano ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Reduction ◽  
Trivalent Arsenic

Photocatalytic reduction behavior of hexavalent chromium on hydroxyl modified titanium dioxide

2017 ◽  
Vol 206 ◽  
pp. 293-299 ◽  
Author(s):  
Yali Li ◽  
Yingying Bian ◽  
Hongxia Qin ◽  
Yaxi Zhang ◽  
Zhenfeng Bian
Keyword(s):  
Titanium Dioxide ◽  
Hexavalent Chromium ◽  
Photocatalytic Reduction ◽  
Reduction Behavior

scholarly journals A Study on the Photocatalytic Reduction of Some Metal Ions in Aqueous Solution Using UV- Titanium Dioxide System

2019 ◽  
pp. 1-7
Author(s):  
I. O. Ekwere ◽  
M. Horsfall ◽  
J. O. E. Otaigbe
Keyword(s):  
Aqueous Solution ◽  
Titanium Dioxide ◽  
Metal Ions ◽  
Metal Ion ◽  
Uv Light ◽  
Kinetic Studies ◽  
Photocatalytic Reduction ◽  
Alkaline Ph ◽  
Removal Of Metal ◽  
Removal Of Metal Ions

The photocatalytic reduction of Cu (II), Pb (II), Cd (II) and Cr (VI) ions in aqueous solution has been investigated. The photocatalyst utilized was nano titanium dioxide, composed of 80% anatase and 20% rutile; the UV light source was a 15 W UV bulb with a wavelength of 254 nm. The results obtained indicated a reduction efficiency order as follows; Cr6+ > Cu2+ > Pb2+ > Cd2+. It was observed that these results correlate with the respective reduction potentials of the metal ions. The effect of pH on the photocatalytic reduction of the metal ions was also carried out and results obtained indicated that with the exception of Cr (VI) ions, higher percentage removal of metal ions from their aqueous solution was recorded at alkaline pH than at acidic pH. This was attributed to an extensive formation of precipitate by the metal ions at alkaline pH. Kinetic studies revealed that the removal of metal ions from their solutions largely followed the pseudo- first-order kinetics. Therefore, the results of this study will be useful in metal ion removal from industrial waste water using photocatalytic process.

Photocatalytic Reduction of NO by CO on Titanium Dioxide under Visible Light Irradiation

2007 ◽  
Vol 111 (39) ◽  
pp. 14440-14447 ◽  
Author(s):  
Andrei A. Lisachenko ◽  
Ruslan V. Mikhailov ◽  
Lev L. Basov ◽  
Boris N. Shelimov ◽  
Michel Che
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Reduction ◽  
Light Irradiation ◽  
Reduction Of No ◽  
Photocatalytic Reduction Of No

Photocatalytic reduction of 4-nitrophenol with arginine-modified titanium dioxide nanoparticles

2007 ◽  
Vol 74 (1-2) ◽  
pp. 103-110 ◽  
Author(s):  
Won-Young Ahn ◽  
Sarah A. Sheeley ◽  
Tijana Rajh ◽  
Donald M. Cropek
Keyword(s):  
Titanium Dioxide ◽  
Titanium Dioxide Nanoparticles ◽  
Photocatalytic Reduction

scholarly journals Comparative analysis of the photocatalytic reduction of drinking water oxoanions using titanium dioxide

2016 ◽  
Vol 104 ◽  
pp. 11-19 ◽  
Author(s):  
Randal Marks ◽  
Ting Yang ◽  
Paul Westerhoff ◽  
Kyle Doudrick
Keyword(s):  
Drinking Water ◽  
Titanium Dioxide ◽  
Comparative Analysis ◽  
Photocatalytic Reduction
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