Comparative investigation on photocatalytic hydrogen evolution over Cu-, Pd-, and Au-loaded mesoporous TiO2 photocatalysts

2005 ◽  
Vol 6 (10) ◽  
pp. 661-668 ◽  
Author(s):  
Thammanoon Sreethawong ◽  
Susumu Yoshikawa
Keyword(s):  
Hydrogen Evolution ◽  
Comparative Investigation ◽  
Mesoporous Tio2 ◽  
Tio2 Photocatalysts ◽  
Photocatalytic Hydrogen Evolution

Photocatalytic hydrogen evolution over mesoporous TiO2/metal nanocomposites

2008 ◽  
Vol 198 (2-3) ◽  
pp. 126-134 ◽  
Author(s):  
Anna V. Korzhak ◽  
Natalia I. Ermokhina ◽  
Alexander L. Stroyuk ◽  
Viktor K. Bukhtiyarov ◽  
Alexandra E. Raevskaya ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Mesoporous Tio2 ◽  
Photocatalytic Hydrogen Evolution ◽  
Metal Nanocomposites

Studies on the enhanced photocatalytic hydrogen evolution over Pt/PEG-modified TiO2 photocatalysts

2008 ◽  
Vol 33 (4) ◽  
pp. 1112-1117 ◽  
Author(s):  
Wei Sun ◽  
Shuqing Zhang ◽  
Zhixiang Liu ◽  
Cheng Wang ◽  
Zongqiang Mao
Keyword(s):  
Hydrogen Evolution ◽  
Tio2 Photocatalysts ◽  
Photocatalytic Hydrogen Evolution

Atomic defects in ultra-thin mesoporous TiO2 enhance photocatalytic hydrogen evolution from water splitting

2020 ◽  
Vol 513 ◽  
pp. 145723 ◽  
Author(s):  
Hongjin Li ◽  
Sujuan Wu ◽  
Zachary D. Hood ◽  
Jianguo Sun ◽  
Biao Hu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Mesoporous Tio2 ◽  
Photocatalytic Hydrogen Evolution

Photocatalytic Hydrogen Evolution over Pt/Co-TiO2 Photocatalysts

2020 ◽  
Vol 01 ◽  
Author(s):  
S. Akel ◽  
R. Dillert ◽  
D.W. Bahnemann
Keyword(s):  
Photocatalytic Activity ◽  
Band Gap ◽  
Hydrogen Evolution ◽  
Molecular Hydrogen ◽  
Hydrogen Generation ◽  
Solar Light ◽  
Tio2 Photocatalysts ◽  
Photocatalytic Hydrogen Evolution ◽  
Doped Tio2 ◽  
Simulated Solar Light

Aims: cobalt doped TiO2 composites were synthesized with the aim to decrease the TiO2 band gap which results in enhanced visible absorption and then loaded with 1 wt.% of platinum for promoting the formation of molecular hydrogen. Background: Controversial results of the cobalt-based compounds create doubts about the photocatalytic activity of the cobalt doped TiO2 materials. Thus, cobalt doped TiO2 composites were synthesized, and the photocatalytic activity was checked for the hydrogen generation. Objective: The objective of this study is the synthesis of photocatalysts that are highly active for the photocatalytic hydrogen evolution. Methods: The TiO2 and Co-TiO2 photocatalysts were synthesized using two different methods that are reflux and hydrothermal synthesis. Additionally, The Pt deposition on the prepared TiO2 and Co-TiO2 catalysts (1 wt.% Pt) was performed by the photoplatinization method. Result: The results showed that the reduction of protons over bare TiO2 and Co-TiO2 materials is possible from the thermodynamic point of view. The evolution of molecular hydrogen from aqueous methanol employing 1 wt.% platinum loaded on 0.5 wt.% Co-TiO2 photocatalysts under simulated solar light irradiation was investigated. The platinized CoTiO2 composites along with the platinized TiO2 samples have shown high photocatalytic hydrogen evolution. Higher hydrogen evolution rates were determined in the presence of all platinized materials, and a maximum of 317 μmol h-1 is observed on a Pt/Co-TiO2 photocatalyst prepared by a hydrothermal method. Conclusion: EPR results confirmed that the defects observed in the sample prepared within the hydrothermal processing were in the surface and have better crystallinity, while the defects detected on the samples prepared by reflux synthesis were less crystalline. The nature of semiconductor materials was explored through the determination of the flatband potential using the Mott–Schottky equation. The Mott−Schottky analysis of electrochemical impedance measurements showed that all semiconductors were n-type semiconductors and that cobalt doping induces impurity level within the band gap of TiO2. The experimental results of photocatalytic hydrogen generation from methanol-reforming showed that the Co- doping does not affect the photocatalytic activity of both Pt/Co-TiO2 catalysts. Despite that, the Pt/Co-TiO2-HT was the best photocatalyst under simulated solar light and show a maximum hydrogen evolution rate of 317 ± 44 μmol h-1. Other: Based on the experimental results, a possible mechanism for the continuous photocatalytic activity of Pt/Co-TiO2 photocatalysts under simulated solar light is proposed.

scholarly journals Ordered Mesoporous TiO2 Gyroids: Effects of Pore Architecture and Nb-Doping on Photocatalytic Hydrogen Evolution under UV and Visible Irradiation

2018 ◽  
Vol 8 (36) ◽  
pp. 1802566 ◽  
Author(s):  
Tobias Sebastian Dörr ◽  
Leonie Deilmann ◽  
Greta Haselmann ◽  
Alexey Cherevan ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Mesoporous Tio2 ◽  
Photocatalytic Hydrogen Evolution ◽  
Pore Architecture ◽  
Ordered Mesoporous ◽  
Visible Irradiation ◽  
Nb Doping

Achieving photocatalytic hydrogen production from alkaline solution upon a designed mesoporous TiO2–Ni hybrid employing commonly used paper as a sacrificial electron donor

2018 ◽  
Vol 5 (11) ◽  
pp. 2709-2717 ◽  
Author(s):  
Yi Wei ◽  
Jinyan Xiong ◽  
Weijie Li ◽  
Ravichandran H. Kollarigowda ◽  
Gang Cheng
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Electron Donor ◽  
Alkaline Solution ◽  
Mesoporous Tio2 ◽  
Ni Nanoparticles ◽  
Photocatalytic Hydrogen Production ◽  
Photocatalytic Hydrogen Evolution ◽  
Hybrid Photocatalyst

Photocatalytic hydrogen evolution from water splitting, using paper as an electron donor, was achieved upon use of a hybrid photocatalyst of mesoporous TiO2 decorated with Ni nanoparticles.

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