Rutile TiO2–Pd Photocatalysts for Hydrogen Gas Production from Methanol Reforming

Bahruji, Hasliza; Bowker, Michael; Davies, Philip R.; Morgan, David; Morton, Clare Ann; Egerton, Terry A.; Kennedy, Julia; Jones, Wilm

doi:10.1007/s11244-014-0346-9

Cited by 26 publications

(21 citation statements)

References 30 publications

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“…It is important for Pd to be in the Pd 0 oxidation state in order to catalyse the hydrogen production steps. 8 PdO on TiO 2 is reduced to Pd 0 in the presence of methanol under UV irradiation prior to sustainable hydrogen production from methanol. 10 Despite PdO being reduced to Pd by methanol it is important that some Pd 2+ is present at the interface.…”

Section: Discussionmentioning

confidence: 99%

“…1,2 The performance of TiO 2 is greatly enhanced by the deposition of metal nanoparticles; Pt/TiO 2 , Au/TiO 2 and Pd/TiO 2 catalysts have been widely investigated and shown to promote hydrogen generation with UV light. [3][4][5][6][7][8] The enhanced activity is associated with the ability of the photo-induced electron in the conduction band of TiO 2 to be transferred to the metal co-catalysts. 9,10 Such transfer occurs at the metal island and the periphery of the TiO 2 interface, which promotes electron-hole separation and consequently extends the lifetime of the energy carriers.…”

Section: Introductionmentioning

confidence: 99%

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Pd local structure and size correlations to the activity of Pd/TiO₂ for photocatalytic reforming of methanol

Abdullah

Bahruji

Rogers

et al. 2019

Phys. Chem. Chem. Phys.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pd local structure and size correlations to the activity of Pd/TiO₂ for photocatalytic reforming of methanol

Abdullah

Bahruji

Rogers

et al. 2019

Phys. Chem. Chem. Phys.

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“…Bahruji et al. reported that H 2 production over a Pd/rutile TiO 2 catalyst is 10 times higher when the reaction is performed in the gas phase compared with the liquid phase . They suggested that the improved gas phase activity is related with the higher relative concentration of methanol and the reduced competition with water for adsorption.…”

Section: Using Oxygenates For H2 Production— Photoreforming Processmentioning

confidence: 99%

Photocatalytic Hydrogen Production: A Rift into the Future Energy Supply

2017

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Photocatalytic hydrogen (H2) production is a process that converts solar energy into chemical energy by means of a suitable photocatalyst. After the huge amount of systems that have been tested in the last forty years, the advent of nanotechnology and a careful design at molecular level, allow to obtain attractive activity, even using pure visible light. At the same time we are approaching reasonable photocatalyst stability in laboratory test, and the attention is paid to identify cost-effective photocatalysts that might find real applications. This Review provides a broad overview of the elementary steps of the heterogeneous photocatalytic H2 production, including an outline of the physico-chemical reactions occurring on semiconductors and cocatalysts. The use of different renewable oxygenates as sustainable sacrificial agent for the H2 production is outlined, in view of a transition from fossil fuels to pure water splitting. Finally, the recent advances in the development of photocatalyst are discussed focusing on the current progress in organic and hybrid organic/inorganic photocatalysts

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“…It is speculated that photoreduction as per Equation (2), is a very efficient process with photogenerated electrons migrating from the outer TiO 2 particle surface to the TiO 2 mesoporous inner surface. Formed electrons can reduce the PdO into Pd • [56].…”

Section: Precursor Near Uv-light Photoreductionmentioning

confidence: 99%

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

2020

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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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Rutile TiO2–Pd Photocatalysts for Hydrogen Gas Production from Methanol Reforming

Cited by 26 publications

References 30 publications

Pd local structure and size correlations to the activity of Pd/TiO₂ for photocatalytic reforming of methanol

Pd local structure and size correlations to the activity of Pd/TiO₂ for photocatalytic reforming of methanol

Photocatalytic Hydrogen Production: A Rift into the Future Energy Supply

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

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Rutile TiO2–Pd Photocatalysts for Hydrogen Gas Production from Methanol Reforming

Cited by 26 publications

References 30 publications

Pd local structure and size correlations to the activity of Pd/TiO2 for photocatalytic reforming of methanol

Pd local structure and size correlations to the activity of Pd/TiO2 for photocatalytic reforming of methanol

Photocatalytic Hydrogen Production: A Rift into the Future Energy Supply

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

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Pd local structure and size correlations to the activity of Pd/TiO₂ for photocatalytic reforming of methanol

Pd local structure and size correlations to the activity of Pd/TiO₂ for photocatalytic reforming of methanol