Experimental study of the visible-light photocatalytic activity of oxygen-deficient TiO2 prepared with Ar/H2 plasma surface treatment

Takuma Nakano; Shota Yazawa; Shota Araki; Sumio Kogoshi; Noboru Katayama; Yusuke Kudo; Tetsuya Nakanishi

doi:10.7567/JJAP.54.01AE04

Experimental study of the visible-light photocatalytic activity of oxygen-deficient TiO₂ prepared with Ar/H₂ plasma surface treatment

Takuma Nakano, Shota Yazawa, Shota Araki, Sumio Kogoshi, Noboru Katayama, Yusuke Kudo, Tetsuya Nakanishi

生産工学部

研究成果: ジャーナルへの寄稿 › 記事 › 査読

6 被引用数 (Scopus)

抄録

Oxygen-deficient TiO₂ (TiO_2-x) has been proposed as a visible-light-responsive photocatalyst. TiO₂%x thin films were prepared by Ar/H₂ plasma surface treatment, applying varying levels of microwave input power and processing times. The highest visible light photocatalytic activity was observed when using an input power of 200W, a plasma processing time of 10min, and a 1 : 1 Ar : H₂ ratio, conditions that generate an electron temperature of 5.7(±1.0) eV and an electron density of 8.5 × 10¹⁰cm^-3. The maximum formaldehyde (HCHO) removal rate of the TiO₂%x film was 2.6 times higher than that obtained from a TiO_2-xN_x film under the same test conditions.

本文言語	英語
論文番号	01AE04
ジャーナル	Japanese Journal of Applied Physics
巻	54
号	1 Supplement
DOI	https://doi.org/10.7567/JJAP.54.01AE04
出版ステータス	出版済み - 1 1月 2015

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10.7567/JJAP.54.01AE04

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abstract = "Oxygen-deficient TiO2 (TiO2-x) has been proposed as a visible-light-responsive photocatalyst. TiO2%x thin films were prepared by Ar/H2 plasma surface treatment, applying varying levels of microwave input power and processing times. The highest visible light photocatalytic activity was observed when using an input power of 200W, a plasma processing time of 10min, and a 1 : 1 Ar : H2 ratio, conditions that generate an electron temperature of 5.7(±1.0) eV and an electron density of 8.5 × 1010cm-3. The maximum formaldehyde (HCHO) removal rate of the TiO2%x film was 2.6 times higher than that obtained from a TiO2-xNx film under the same test conditions.",

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AU - Katayama, Noboru

AU - Kudo, Yusuke

AU - Nakanishi, Tetsuya

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AB - Oxygen-deficient TiO2 (TiO2-x) has been proposed as a visible-light-responsive photocatalyst. TiO2%x thin films were prepared by Ar/H2 plasma surface treatment, applying varying levels of microwave input power and processing times. The highest visible light photocatalytic activity was observed when using an input power of 200W, a plasma processing time of 10min, and a 1 : 1 Ar : H2 ratio, conditions that generate an electron temperature of 5.7(±1.0) eV and an electron density of 8.5 × 1010cm-3. The maximum formaldehyde (HCHO) removal rate of the TiO2%x film was 2.6 times higher than that obtained from a TiO2-xNx film under the same test conditions.

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