ChemInform Abstract: Photocatalytic Reduction of Mercury(II) Ions in Aqueous Suspensions of Titanium Dioxide and Tungsten Trioxide.

Ruthenium (II) polypyridyl complexes modified titanium dioxide materials with anatase phase, the length of 10–100[Formula: see text]nm, were synthesized by a hydrothermal method. Photocatalytic CO2reduction experiments were performed in sensitized TiO2aqueous suspensions under UV–Vis light in closed systems. And only methanol was detected in the liquid phase under the experiment condition. The effect of different photosensitizers content on the photoactivity of TiO2was also studied, showing that Ru(BiDiPy)2(NCS)2sensitized TiO2was the optimal photocatalyst in transformation of CO2to methanol. A possible mechanism for the photocatalytic reduction was also proposed in this paper.

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ChemInform Abstract: Photocatalytic Reduction and Immobilization of Hexavalent Chromium at Titanium Dioxide in Aqueous Basic Media.

ChemInform ◽

10.1002/chin.199351019 ◽

2010 ◽

Vol 24 (51) ◽

pp. no-no

Author(s):

W.-Y. LIN ◽

C. WEI ◽

K. RAJESHWAR

Keyword(s):

Titanium Dioxide ◽

Hexavalent Chromium ◽

Photocatalytic Reduction

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Tungsten trioxide–titanium dioxide composite films prepared by occlusion electrosynthesis in a nickel matrix

Journal of Electroanalytical Chemistry ◽

10.1016/s0022-0728(03)00287-0 ◽

2003 ◽

Vol 553 ◽

pp. 77-85 ◽

Cited By ~ 10

Author(s):

C.R. Chenthamarakshan ◽

N.R. de Tacconi ◽

Ryuichi Shiratsuchi ◽

Krishnan Rajeshwar

Keyword(s):

Titanium Dioxide ◽

Tungsten Trioxide ◽

Composite Films ◽

Nickel Matrix

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Photocatalytic reduction behavior of hexavalent chromium on hydroxyl modified titanium dioxide

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2017.01.044 ◽

2017 ◽

Vol 206 ◽

pp. 293-299 ◽

Cited By ~ 109

Author(s):

Yali Li ◽

Yingying Bian ◽

Hongxia Qin ◽

Yaxi Zhang ◽

Zhenfeng Bian

Keyword(s):

Titanium Dioxide ◽

Hexavalent Chromium ◽

Photocatalytic Reduction ◽

Reduction Behavior

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Rhodium-catalysed reduction of vanadium pentoxide and tungsten trioxide by hydrogen

Journal of Chemical Technology and Biotechnology ◽

10.1002/jctb.5700281110 ◽

1978 ◽

Vol 28 (11) ◽

pp. 751-755 ◽

Cited By ~ 1

Author(s):

Jagannatha Gopalakrishnan ◽

Ram P. Viswanath ◽

Kuttanikkat V. Govindan Kutty

Keyword(s):

Vanadium Pentoxide ◽

Tungsten Trioxide ◽

And Tungsten

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Titanium dioxide-photocatalytic reduction of pentavalent and trivalent arsenic

Arsenic in the Environment - Proceedings - One Century of the Discovery of Arsenicosis in Latin America (1914-2014) As2014 ◽

10.1201/b16767-302 ◽

2014 ◽

pp. 820-824 ◽

Cited By ~ 1

Author(s):

M Litter ◽

I Levy ◽

F Requejo ◽

M Mizrahi ◽

G Ruano ◽

...

Keyword(s):

Titanium Dioxide ◽

Photocatalytic Reduction ◽

Trivalent Arsenic

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

International Research Journal of Pure and Applied Chemistry ◽

10.9734/irjpac/2019/v18i230087 ◽

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.

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