人工光合成のための光触媒材料の開発

人工光合作用光催化材料的开发

• 批准号: 14050090
• 负责人: KUDO Akihiko
• 金额: $ 18.75万
• 依托单位: Tokyo University of Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14050090/
• 关键词: Environment; Catalysis; New Energy; Nanomaterials; Hydrogen; Visible Light Response; Photocatalyst; 可視光応答化; クロム; 水素生成; 酸素生成; アンチモン; 二酸化チタン; チタン酸ストロンチウム

Metal cation doping into TiO_2, and SrTiO_3 gave visible light responses for H_2 or O_2 evolution from aqueous solutions containing of sacrificial reagents. The visible light responses were due to the electronic transition from donor levels formed with dopants to conduction bands of the host photocatalysts. Codoping was effective to compensate charge unbalance brought by doping of transition metal cations, resulting in the improvement of visible light response for photocatalytic reactions. Among the transition metal-doped photocatalysts, SrTiO_3 doped with Rh (SrTiO_3:Rh) was the novel metal oxide photocatalyst that produced H_2 under visible light irradiation. Ag_3VO_4, Ag_<0.5>Pr_<0.5>TiO_3, and SnNb_2O_6 were also developed by band engineering of a balance band control. Overall water splitting under visible light irradiation has been achieved by construction of a Z-scheme photocatalysis system employing visible-light-driven photocatalysts for H_2 and O_2 evolution, and an Fe^<3+>/Fe^<2+> redox couple as an electron relay. Moreover, highly efficient sulfide photocatalysts for production of solar hydrogen was developed by making solid solutions of ZnS with narrow band gap semiconductors.

金属阳离子掺杂TiO_2和SrTiO_3对含有牺牲试剂的水溶液中H_2或O_2的析出有可见光响应。可见光响应是由于掺杂剂形成的电子从供体能级过渡到宿主光催化剂的导带。共掺杂可以有效补偿过渡金属阳离子掺杂带来的电荷不平衡，从而改善光催化反应的可见光响应。在过渡金属掺杂光催化剂中，SrTiO_3掺杂Rh （SrTiO_3:Rh）是一种在可见光照射下产生H_2的新型金属氧化物光催化剂。利用平衡带控制的能带工程，还制备了Ag_3VO_4、Ag_<0.5>Pr_<0.5>TiO_3和SnNb_2O_6。利用可见光驱动的H_2和O_2析出光催化剂和Fe^<3+>/Fe^<2+>氧化还原偶对作为电子继电器，构建了Z-scheme光催化体系，实现了在可见光照射下水的全面分解。利用窄带隙半导体制备ZnS固溶体，开发了高效的硫化物光催化剂。

项目成果

Development of Powdered Photocatalysts for Water Splitting

用于水分解的粉末状光催化剂的开发

• 发表时间: 2006
• 作者: A. Kudo

Strategies for the development of visible-light-driven photocatalyst materials for water splitting

可见光驱动光催化水分解材料的开发策略

• 发表时间: 2005
• 作者: A. Kudo

Photoreductive defluorination of hexafluorobenzene on metal-doped ZnS photocatalysts under visible light irradiatior.

可见光照射下金属掺杂ZnS光催化剂光还原脱氟六氟苯

• 发表时间: 2005
• 期刊: Chem.Lett. 34・7
• 作者: S.Kohtani

光触媒を用いた水からのクリーンな水素製造

使用光催化剂从水中清洁制氢

• 发表时间: 2007
• 期刊: 水素エネルギーシステム 32・1
• 作者: 三石雄悟

光触媒 〜基礎・材料開発・応用〜(分担)“水素生成に高活性を示す可視光応答性硫化物光触媒"

光催化剂〜基础/材料开发/应用〜（合著者）“可见光响应硫化物光催化剂在制氢方面表现出高活性”

• 发表时间: 2005
• 作者: A;Kudo;A. Kudo;A. Kudo;A. Kudo;A. Kudo;A. Kudo;A. Kudo;A. Kudo;A. Kudo;工藤昭彦;工藤昭彦;辻一誠
• 通讯作者: 辻一誠