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Photocatalytic reduction of CO2 over a hybrid photocatalyst composed of WO3 and graphitic carbon nitride (g-C3N4) under visible light
http://hdl.handle.net/10228/00006544
http://hdl.handle.net/10228/000065440522229b-293f-42af-9b28-0faaa56f63d8
名前 / ファイル | ライセンス | アクション |
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JCU6_17.pdf (1.3 MB)
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Item type | 学術雑誌論文 = Journal Article(1) | |||||||||||||||||
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公開日 | 2018-02-01 | |||||||||||||||||
資源タイプ | ||||||||||||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||
資源タイプ | journal article | |||||||||||||||||
タイトル | ||||||||||||||||||
タイトル | Photocatalytic reduction of CO2 over a hybrid photocatalyst composed of WO3 and graphitic carbon nitride (g-C3N4) under visible light | |||||||||||||||||
言語 | ||||||||||||||||||
言語 | eng | |||||||||||||||||
著者 |
横野, 照尚
× 横野, 照尚
WEKO
6794
× 村上, 直也
WEKO
27551
× Koyanagi, Takahiro× Yang, Yin |
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抄録 | ||||||||||||||||||
内容記述タイプ | Abstract | |||||||||||||||||
内容記述 | Graphitic carbon nitride (g-C3N4) has attracted much attention as a metal-free semiconductor having visible light absorption and relatively high chemical stability. g-C3N4 can reduce CO2 to organic fuels such as methanol (CH3OH), formic acid (HCO2H), and methane (CH4) under visible light irradiation. However, oxidation potential of g-C3N4 is not enough for water oxidation. Therefore, we focused on hybridization of g-C3N4 and tungsten(VI) oxide (WO3) which has high oxidation potential for water oxidation. In this study, we examined CO2 reduction by composite photocatalyst of g-C3N4 and WO3, which was prepared by three methods (mixture using an agate mortar, impregnation and planetary mill). As a result, composite photocatalyst prepared with planetary mill showed the highest photocatalytic activity. Photodeposition of silver or gold nanoparticles only on g-C3N4 of the hybrid photocatalyst induced an increase in CH3OH because the loaded metal nanoparticles play an important role in multi-electron reduction of CO2. Photocatalytic activity of the Au-loaded hybrid photocatalyst composed of g-C3N4 and WO3 was 1.7-times higher than that of the hybrid photocatalyst without Au loading. In addition, we investigated photocatalytic reaction mechanism of composite photocatalyst by double-beam photoacoustic spectroscopy. This result revealed Z-scheme reaction proceeds in the composite photocatalyst to maintain high oxidation ability of WO3 and high reduction ability of g-C3N4, resulting in high photocatalytic activity. | |||||||||||||||||
書誌情報 |
Journal of CO2 Utilization 巻 6, p. 17-25, 発行日 2014-06 |
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出版社 | ||||||||||||||||||
出版者 | Elsevier | |||||||||||||||||
DOI | ||||||||||||||||||
関連タイプ | isVersionOf | |||||||||||||||||
識別子タイプ | DOI | |||||||||||||||||
関連識別子 | https://doi.org/10.1016/j.jcou.2014.02.002 | |||||||||||||||||
ISSN | ||||||||||||||||||
収録物識別子タイプ | ISSN | |||||||||||||||||
収録物識別子 | 2212-9820 | |||||||||||||||||
著作権関連情報 | ||||||||||||||||||
権利情報 | Copyright (c) 2014 Elsevier Ltd. | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Hybrid photocatalyst | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Graphtec carbon nitride | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Tungsten oxide | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Reduction of carbon dioxide | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Z-scheme reaction | |||||||||||||||||
出版タイプ | ||||||||||||||||||
出版タイプ | AM | |||||||||||||||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||||||||
査読の有無 | ||||||||||||||||||
値 | yes | |||||||||||||||||
研究者情報 | ||||||||||||||||||
https://hyokadb02.jimu.kyutech.ac.jp/html/98_ja.html | ||||||||||||||||||
論文ID(連携) | ||||||||||||||||||
10254919 | ||||||||||||||||||
連携ID | ||||||||||||||||||
6572 |