Hydrogen production by photocatalytic water splitting of aqueous hydrogen iodide over Pt/alkali metal tantalates

Hidehisa Hagiwara; Ittoku Nozawa; Katsuaki Hayakawa; Tatsumi Ishihara

doi:10.1039/c9se00355j

Hydrogen production by photocatalytic water splitting of aqueous hydrogen iodide over Pt/alkali metal tantalates

Hidehisa Hagiwara^*, Ittoku Nozawa, Katsuaki Hayakawa, Tatsumi Ishihara

^*Corresponding author for this work

Hydrogen Isotope Research Center, Organization for Promotion of Research

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Photocatalytic hydrogen production from aqueous hydrogen iodide (HI) over alkali metal tantalates loaded with Pt (Pt/ATaO₃, A = Li, Na, or K) was demonstrated. Of the photocatalysts examined, Pt/KTaO₃ showed the highest photocatalytic activity for HI decomposition. KTaO₃, having the lowest excitation energy, absorbs the largest number of photons for use in photocatalytic reactions, and its corresponding catalyst has the highest number of reaction sites owing to the excellent dispersion of the Pt cocatalyst. These results demonstrate the possibility of developing a new solar-energy-based water splitting process that can convert both light and thermal energy in sunlight to hydrogen energy.

Original language	English
Pages (from-to)	3021-3028
Number of pages	8
Journal	Sustainable Energy and Fuels
Volume	3
Issue number	11
DOIs	https://doi.org/10.1039/c9se00355j
State	Published - 2019

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology

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title = "Hydrogen production by photocatalytic water splitting of aqueous hydrogen iodide over Pt/alkali metal tantalates",

abstract = "Photocatalytic hydrogen production from aqueous hydrogen iodide (HI) over alkali metal tantalates loaded with Pt (Pt/ATaO3, A = Li, Na, or K) was demonstrated. Of the photocatalysts examined, Pt/KTaO3 showed the highest photocatalytic activity for HI decomposition. KTaO3, having the lowest excitation energy, absorbs the largest number of photons for use in photocatalytic reactions, and its corresponding catalyst has the highest number of reaction sites owing to the excellent dispersion of the Pt cocatalyst. These results demonstrate the possibility of developing a new solar-energy-based water splitting process that can convert both light and thermal energy in sunlight to hydrogen energy.",

author = "Hidehisa Hagiwara and Ittoku Nozawa and Katsuaki Hayakawa and Tatsumi Ishihara",

note = "Publisher Copyright: This journal is {\textcopyright} The Royal Society of Chemistry.",

year = "2019",

doi = "10.1039/c9se00355j",

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T1 - Hydrogen production by photocatalytic water splitting of aqueous hydrogen iodide over Pt/alkali metal tantalates

AU - Hagiwara, Hidehisa

AU - Nozawa, Ittoku

AU - Hayakawa, Katsuaki

AU - Ishihara, Tatsumi

PY - 2019

Y1 - 2019

N2 - Photocatalytic hydrogen production from aqueous hydrogen iodide (HI) over alkali metal tantalates loaded with Pt (Pt/ATaO3, A = Li, Na, or K) was demonstrated. Of the photocatalysts examined, Pt/KTaO3 showed the highest photocatalytic activity for HI decomposition. KTaO3, having the lowest excitation energy, absorbs the largest number of photons for use in photocatalytic reactions, and its corresponding catalyst has the highest number of reaction sites owing to the excellent dispersion of the Pt cocatalyst. These results demonstrate the possibility of developing a new solar-energy-based water splitting process that can convert both light and thermal energy in sunlight to hydrogen energy.

AB - Photocatalytic hydrogen production from aqueous hydrogen iodide (HI) over alkali metal tantalates loaded with Pt (Pt/ATaO3, A = Li, Na, or K) was demonstrated. Of the photocatalysts examined, Pt/KTaO3 showed the highest photocatalytic activity for HI decomposition. KTaO3, having the lowest excitation energy, absorbs the largest number of photons for use in photocatalytic reactions, and its corresponding catalyst has the highest number of reaction sites owing to the excellent dispersion of the Pt cocatalyst. These results demonstrate the possibility of developing a new solar-energy-based water splitting process that can convert both light and thermal energy in sunlight to hydrogen energy.

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SN - 2398-4902

VL - 3

SP - 3021

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JO - Sustainable Energy and Fuels

JF - Sustainable Energy and Fuels

IS - 11

ER -

Hydrogen production by photocatalytic water splitting of aqueous hydrogen iodide over Pt/alkali metal tantalates

Abstract

ASJC Scopus subject areas

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