Hydrogen production by photocatalytic decomposition of methanol gas on Pt/TiO2 nano-film

Cui, Wenquan; Li, Feng; Xu, Chenghua; Li, Shaojie; Fa-li, Qiu

doi:10.1016/j.catcom.2004.06.011

Cited by 52 publications

(27 citation statements)

References 9 publications

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“…For photocatalytic H 2 production from HPr solution, no matter what kinds of photocatalyst used, previous studies have showed that reactions over photocatalyst surface can stepwise proceed 35, 38, 47–53, including stable intermediates such as alcohols, aldehydes and acids (Equations ). …”

Section: Resultsmentioning

confidence: 99%

A systematic study of photocatalytic H2 production from propionic acid solution over Pt/TiO2 photocatalyst

Wei

Zheng

Zhang

et al. 2010

Int. J. Energy Res.

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SUMMARYThe propionic acid (HPr) is one of the main by-products during fermentative H 2 process. To efficiently convert HPr to H 2 gas, photocatalytic H 2 production from HPr solution with the use of Pt/TiO 2 photocatalyst under ultraviolet light has been studied in this research. The Pt/TiO 2 photocatalyst has been prepared by the sol-gel method and further characterized by X-ray diffraction, TEM and XPS. Effects of Pt loading amount, HPr concentration, initial pH value on photocatalytic H 2 production have been investigated in detail. From practical point of view, the H 2 evolution from HPr solution under UV irradiation for prolonged time has been studied as well. The Langmuir model can be able to describe the relationship between HPr concentration with the maximum rate of H 2 production. The apparent quantum efficiency and apparent energy conversion efficiency are found to 1.65 and 0.72%, respectively. To better understand the photocatalytic H 2 process over Pt/TiO 2 , a possible mechanism for the degradation of HPr has been proposed as well. Based on our results, an efficient route for hydrogen production from renewable biomass can be established by coupling biological H 2 production process with photocatalytic H 2 production process.

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Section: Resultsmentioning

confidence: 99%

A systematic study of photocatalytic H2 production from propionic acid solution over Pt/TiO2 photocatalyst

Wei

Zheng

Zhang

et al. 2010

Int. J. Energy Res.

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“…the surface properties and particle size of the catalyst and the reaction temperature. A noteworthy increase in reaction rate is observed in the presence of easily oxidizable organic compounds (especially water-alcohol mixtures) rather than using only pure water [6,8,[20][21][22][23][24][25][26][27]. These electron donors (sacrificial reagents) react irreversibly with the photoinduced holes, resulting in suppressed electron-hole recombination and O 2 /H 2 back-reaction rates.…”

Section: Introductionmentioning

confidence: 91%

Enhanced photocatalytic H2 generation on noble metal modified TiO2 catalysts excited with visible light irradiation

Kmetykó

Szániel

Tsakiroglou

et al. 2015

Reac Kinet Mech Cat

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Photocatalysts were prepared by the deposition of noble metal nanoparticles (Au, Pt, Rh or Ru) on different commercially available titanias. The photocatalytic performance of these catalysts was studied for the evolution of H 2 during excitation with visible light. Experiments were carried out in irradiated suspensions containing various organic compounds. Noble metal nanoparticles can promote the lowering of the overvoltage of H ? reduction. The noble metal nanoparticles were deposited onto the TiO 2 surface by in situ chemical reduction in a quantity of 1 wt%. Three aspects were considered: (i) the photocatalytic performance of different bare TiO 2 deposited with Pt; (ii) the effect of the deposition of Au, Pt, Rh or Ru nanoparticles onto the TiO 2 surface; and (iii) choosing the most suitable H 2 production supporting organic compound. The rate of H 2 evolution proved to be strongly dependent on the quality of TiO 2 powder and the presence of different organics. The applied noble metal was also an efficiency determining factor during these photocatalytic reactions. With the best combination of the above mentioned circumstances, we achieved promising results to be able to effectively harvest the energy of sunlight.

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“…Takata and coworkers [12] discovered that K 2 La 2 Ti 3 O 10 exhibited a remarkable catalytic activity for water splitting under UV light irradiation after loading with nickel. While most researchers focused on Ni/K 2 La 2 Ti 3 O 10 system, platinum possesses a much higher value of work function than that of nickel [13] . In this paper, photo-catalyst Pt/K 2 La 2 Ti 3 O 10 was studied for hydrogen evolution under UV light irradiation.…”

Section: Introductionmentioning

confidence: 98%

“…Hydrogen evolution via photocatalytic decomposition of water is one of the possible applications. Semi-conductor materials, such as TiO 2 [2] , SrTiO 3 [3 -5] , Na 2 Ti 6 O 13 [6] , BaTi 4 O 9 [7] , ZrO 2 [8] , Ta 2 O 5 [9] etc., have been widely applied in photo-catalysis processes. In recent years, some compounds with layered structure have showed high photo-catalysis activity in water decomposition.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Pt/K2La2Ti3O10 and its photo-catalytic activity for hydrogen evolution from methanol water solution

Cui

et al. 2006

SCI CHINA SER B

Self Cite

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A layered perovskite-type oxide K 2 La 2 Ti 3 O 10 was prepared with high-temperature solid-state reaction, and characterized with X-ray diffraction (XRD) and ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS). Platinum was loaded onto K 2 La 2 Ti 3 O 10 as a co-catalyst with different methods. The dispersion of platinum on K 2 La 2 Ti 3 O 10 was determined with HOT method. The photocatalytic activity of Pt/K 2 La 2 Ti 3 O 10 was studied. This catalyst showed much higher activity in hydrogen evolution reaction than Ni/K 2 La 2 Ti 3 O 10 . The effects of different amounts of loaded platinum and several preparation methods were evaluated. The best achieved hydrogen evolution rate was 233.88 μmol·h −1 by Pt(2%)/K 2 La 2 Ti 3 O 10 . A possible band structure and mechanism were discussed based on the results.

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Hydrogen production by photocatalytic decomposition of methanol gas on Pt/TiO2 nano-film

Cited by 52 publications

References 9 publications

A systematic study of photocatalytic H2 production from propionic acid solution over Pt/TiO2 photocatalyst

A systematic study of photocatalytic H2 production from propionic acid solution over Pt/TiO2 photocatalyst

Enhanced photocatalytic H2 generation on noble metal modified TiO2 catalysts excited with visible light irradiation

Preparation of Pt/K2La2Ti3O10 and its photo-catalytic activity for hydrogen evolution from methanol water solution

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