Gas phase photocatalytic decomposition of alcohols with titanium dioxide nanotube arrays in high vacuum

Masashi Hattori; Kei Noda; Kei Kobayashi; Kazumi Matsushige

doi:10.1002/pssc.201000455

Gas phase photocatalytic decomposition of alcohols with titanium dioxide nanotube arrays in high vacuum

Masashi Hattori, Kei Noda, Kei Kobayashi, Kazumi Matsushige

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

7 Citations (Scopus)

Abstract

Hydrogen production based on gas-phase photocatalysis was investigated for platinized titanium dioxide (TiO₂) nanotube arrays (TNAs) in high vacuum. In the presence of ethanol of 10^-6 Torr, H₂ generated from the ethanol photodecomposition was successfully detected at a real-time scale for anodized TNAs. In addition, it was found that longer nanotube arrays with upright geometry are desirable for increasing the amount of the H₂ production. A mechanism of gas phase photocatalytic reforming for the TNAs, considered in this work, suggests that the selective deposition of Pt cocatalyst particles on the aperture parts of the nanotube arrays is necessary for efficient H₂ production. This consideration was confirmed by the experimental result of the comparison of different Pt deposition methods: RF sputtering and photodeposition. These findings obtained in this study will be useful for designing new hydrogen reformers in the future.

Original language	English
Pages (from-to)	549-551
Number of pages	3
Journal	Physica Status Solidi (C) Current Topics in Solid State Physics
Volume	8
Issue number	2
DOIs	https://doi.org/10.1002/pssc.201000455
Publication status	Published - 2011 Feb 1
Externally published	Yes

Keywords

Gas phase
Hydrogen production
Nanotube arrays
Photocatalysis
Titanium dioxide

ASJC Scopus subject areas

Condensed Matter Physics

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/pssc.201000455

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title = "Gas phase photocatalytic decomposition of alcohols with titanium dioxide nanotube arrays in high vacuum",

abstract = "Hydrogen production based on gas-phase photocatalysis was investigated for platinized titanium dioxide (TiO2) nanotube arrays (TNAs) in high vacuum. In the presence of ethanol of 10-6 Torr, H2 generated from the ethanol photodecomposition was successfully detected at a real-time scale for anodized TNAs. In addition, it was found that longer nanotube arrays with upright geometry are desirable for increasing the amount of the H2 production. A mechanism of gas phase photocatalytic reforming for the TNAs, considered in this work, suggests that the selective deposition of Pt cocatalyst particles on the aperture parts of the nanotube arrays is necessary for efficient H2 production. This consideration was confirmed by the experimental result of the comparison of different Pt deposition methods: RF sputtering and photodeposition. These findings obtained in this study will be useful for designing new hydrogen reformers in the future.",

keywords = "Gas phase, Hydrogen production, Nanotube arrays, Photocatalysis, Titanium dioxide",

author = "Masashi Hattori and Kei Noda and Kei Kobayashi and Kazumi Matsushige",

year = "2011",

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doi = "10.1002/pssc.201000455",

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T1 - Gas phase photocatalytic decomposition of alcohols with titanium dioxide nanotube arrays in high vacuum

AU - Hattori, Masashi

AU - Noda, Kei

AU - Kobayashi, Kei

AU - Matsushige, Kazumi

PY - 2011/2/1

Y1 - 2011/2/1

N2 - Hydrogen production based on gas-phase photocatalysis was investigated for platinized titanium dioxide (TiO2) nanotube arrays (TNAs) in high vacuum. In the presence of ethanol of 10-6 Torr, H2 generated from the ethanol photodecomposition was successfully detected at a real-time scale for anodized TNAs. In addition, it was found that longer nanotube arrays with upright geometry are desirable for increasing the amount of the H2 production. A mechanism of gas phase photocatalytic reforming for the TNAs, considered in this work, suggests that the selective deposition of Pt cocatalyst particles on the aperture parts of the nanotube arrays is necessary for efficient H2 production. This consideration was confirmed by the experimental result of the comparison of different Pt deposition methods: RF sputtering and photodeposition. These findings obtained in this study will be useful for designing new hydrogen reformers in the future.

AB - Hydrogen production based on gas-phase photocatalysis was investigated for platinized titanium dioxide (TiO2) nanotube arrays (TNAs) in high vacuum. In the presence of ethanol of 10-6 Torr, H2 generated from the ethanol photodecomposition was successfully detected at a real-time scale for anodized TNAs. In addition, it was found that longer nanotube arrays with upright geometry are desirable for increasing the amount of the H2 production. A mechanism of gas phase photocatalytic reforming for the TNAs, considered in this work, suggests that the selective deposition of Pt cocatalyst particles on the aperture parts of the nanotube arrays is necessary for efficient H2 production. This consideration was confirmed by the experimental result of the comparison of different Pt deposition methods: RF sputtering and photodeposition. These findings obtained in this study will be useful for designing new hydrogen reformers in the future.

KW - Gas phase

KW - Hydrogen production

KW - Nanotube arrays

KW - Photocatalysis

KW - Titanium dioxide

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ER -

Gas phase photocatalytic decomposition of alcohols with titanium dioxide nanotube arrays in high vacuum

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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