Effect of excited state redox properties of dye sensitizers on hydrogen production through photo-splitting of water over TiO2 photocatalyst

2010 ◽  
Vol 11 (5) ◽  
pp. 336-339 ◽  
Author(s):  
Debabrata Chatterjee
Keyword(s):  
Excited State ◽  
Hydrogen Production ◽  
Redox Properties ◽  
Tio2 Photocatalyst

Tailoring hierarchical porous TiO2 based ternary rGO/NiO/TiO2 photocatalyst for efficient hydrogen production and degradation of Rhodamine B

2021 ◽  
Vol 1235 ◽  
pp. 130222
Author(s):  
Kadavath Santhosh ◽  
Saddam SK ◽  
Sadhana Chouti ◽  
Spandana Gonuguntla ◽  
Sai Prasad Ega ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Rhodamine B ◽  
Tio2 Photocatalyst ◽  
Porous Tio2 ◽  
Hierarchical Porous

scholarly journals Redox Properties of Cobalt Tetraphenyl Porphyrin Adsorbed on Semi-Conductor Oxides Studied by Photoacoustic Spectroscopy

1983 ◽  
Vol 3 (1-6) ◽  
pp. 293-305
Author(s):  
A. M. Merle ◽  
L. Brzezinski ◽  
A. Cherqaoui ◽  
C. Giannotti
Keyword(s):  
Excited State ◽  
Ground State ◽  
Photoacoustic Spectroscopy ◽  
Oxidation Potential ◽  
Redox Properties ◽  
Reduced Form ◽  
Adsorbed State ◽  
Tetraphenyl Porphyrin ◽  
Double Oxidation

Photoacoustic spectroscopy has allowed to show that physisorbed CoIITPP is ground state monooxidized into (CoIIITPP)+ when adsorbed on Nb2O5, TiO2, SrTiO3, ZnO, SnO2. A double oxidation is observed when the porphyrin is adsorbed on WO3. On the contrary when it is adsorbed on ZrO2 and SiO2, oxidation only occurs if the porphyrin has been driven by irradiation in its excited state. It remains in the reduced form when adsorbed on Ta2O5. This behavior has been correlated with the band positions of these various oxides and has allowed to roughly position the oxidation potential of CoTPP in adsorbed state ∼0.8 V higher than in solution (0.5 V/SCE or 5.3 V/vacuum) that is 4.5 V/vacuum.

Hydrogen production upon UV-light irradiation of Cu/TiO2 photocatalyst in the presence of alkanol-amines

2020 ◽  
Vol 45 (51) ◽  
pp. 26701-26715
Author(s):  
Marica Muscetta ◽  
Laura Clarizia ◽  
Corrado Garlisi ◽  
Giovanni Palmisano ◽  
Raffaele Marotta ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Uv Light ◽  
Light Irradiation ◽  
Tio2 Photocatalyst ◽  
Uv Light Irradiation

Pyrene Molecular Orbital Shuffle-Controlling Excited State and Redox Properties by Changing the Nature of the Frontier Orbitals

2017 ◽  
Vol 23 (53) ◽  
pp. 13164-13180 ◽  
Author(s):  
Julia Merz ◽  
Julian Fink ◽  
Alexandra Friedrich ◽  
Ivo Krummenacher ◽  
Hamad H. Al Mamari ◽  
...  
Keyword(s):  
Excited State ◽  
Molecular Orbital ◽  
Redox Properties ◽  
Frontier Orbitals

Visible light induced hydrogen production over thiophenothiazine-based dye sensitized TiO2 photocatalyst in neutral water

RSC Advances ◽  
2015 ◽  
Vol 5 (40) ◽  
pp. 31415-31421 ◽  
Author(s):  
Amritanjali Tiwari ◽  
Indranil Mondal ◽  
Ujjwal Pal
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Water Splitting ◽  
Light Illumination ◽  
Tio2 Photocatalyst ◽  
Photocatalytic Hydrogen Production ◽  
Dye Sensitized ◽  
Visible Light Illumination ◽  
Neutral Water

Novel thiophenothiazine sensitized TiO2 photocatalysts show high photocatalytic hydrogen production from water splitting under visible light illumination.

Spectroscopic and electrochemical properties of dimeric Ruthenium(II) diimine complexes and determination of their excited state redox properties

1987 ◽  
Vol 109 (9) ◽  
pp. 2691-2697 ◽  
Author(s):  
Yael Fuchs ◽  
Sonita Lofters ◽  
Thomas Dieter ◽  
Wei Shi ◽  
Robert Morgan ◽  
...  
Keyword(s):  
Excited State ◽  
Electrochemical Properties ◽  
Redox Properties ◽  
Diimine Complexes

scholarly journals Photoreduction of a Pd-Doped Mesoporous TiO2 Photocatalyst for Hydrogen Production under Visible Light

Catalysts ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 74 ◽  
Author(s):  
Bianca Rusinque ◽  
Salvador Escobedo ◽  
Hugo de Lasa
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Photoelectron Spectroscopy ◽  
Uv Light ◽  
Morphological Characteristics ◽  
Production Performance ◽  
Bet Surface Area ◽  
Tio2 Photocatalyst ◽  
X Ray ◽  
Production Of Hydrogen

Photoreduction with visible light can enhance the photocatalytic activity of TiO2 for the production of hydrogen. In this article, we present a strategy to photoreduce a palladium-doped TiO2 photocatalyst by using near-UV light prior to its utilization. A sol-gel methodology was employed to prepare the photocatalysts with different metal loadings (0.25–5.00 wt% Pd). The structural and morphological characteristics of the synthesized Pd-TiO2 were analyzed by using X-ray Diffraction (XRD), BET Surface Area (SBET), TemperatureProgrammed Reduction (TPR), Chemisorption and X-ray Photoelectron Spectroscopy (XPS). Hydrogen was produced by water splitting under visible light irradiation using ethanol as an organic scavenger. Experiments were developed in the Photo-CREC Water-II (PCW-II) Reactor designed at the CREC-UWO (Chemical Reactor Engineering Centre). It was shown that the mesoporous 0.25 wt% Pd-TiO2 with 2.5 1eV band gap exhibits, under visible light, the best hydrogen production performance, with a 1.58% Quantum Yield being achieved.

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