Development of visible-light response photocatalyst by selective modification on specific exposed crystal faces with metal ions modification on specific exposed crystal faces with metal ions

通过金属离子选择性修饰特定暴露晶面开发可见光响应光催化剂

• 批准号: 22750139
• 负责人: MURAKAMI Naoya
• 金额: $ 2.58万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22750139/
• 关键词: ナノ材料; 環境材料; 触媒・化学プロセス; 表面・界面物性

{111} exposed crystal faces of shape-controlled rutile titanium(IV) oxide(TiO_2) were site-selectively modified with trivalent iron(III)(Fe^<3+>) ions by utilizing adsorption property of iron(III)/ iron(II)(Fe^<3+>/ Fe^<2+>) ions. The rutile TiO_2 with site-selective modification of Fe^<3+> ions showed high photocatalytic activity under visible-light irradiation as a result of separation of redox sites, i. e., oxidation and reduction proceed over Fe^<3+> ions on{ 111} faces and the bare TiO_2 surface on{ 110} faces, respectively.

利用铁(III)/铁的吸附特性，用三价铁(III)(Fe^3+)离子对{111}形状控制的金红石型氧化钛(TiO_2)的暴露晶面进行位点选择性修饰(II)(Fe^<3+>/Fe^<2+>)离子。 Fe^3+离子位点选择性修饰的金红石TiO_2由于氧化还原位点的分离，在可见光照射下表现出较高的光催化活性。即，分别在{111}面上的Fe^<3+>离子和{110}面上的裸TiO_2表面上进行氧化和还原。

项目成果

Size-controlled decahedral anatase titanium(IV) oxide photocatalyst prepared by hydrothermal treatment of peroxo titanic acid in the presence of polyvinyl alchohol

聚乙烯醇存在下过氧钛酸水热处理制备尺寸可控的十面体锐钛矿氧化钛(IV)光催化剂

• 发表时间: 2010
• 作者: Naoya Murakami;Teruhisa Ohno
• 通讯作者: Teruhisa Ohno

ependence of Photocatalytic Activity on Particle Size of Shape-controlled Anatase Titanium(IV) Oxide Nanocrystal

形控锐钛矿型钛(IV)氧化物纳米晶光催化活性与粒径的关系

• 发表时间: 2011
• 作者: Naoya Murakami;Shota Kawakami;Teruhisa Ohno
• 通讯作者: Teruhisa Ohno

Dependence of Photocatalytic Activity on Aspect Ratio of Shape-Controlled Rutile Titanium(IV) Oxide Nanorods

• DOI: 10.1021/jp109057s
• 发表时间: 2011-01
• 期刊: Journal of Physical Chemistry C
• 影响因子: 3.7
• 作者: N. Murakami;S. Katayama;Misa Nakamura;Toshiki Tsubota;T. Ohno

Dependence of photocatalytic activity on particle size of a shape-controlled anatase titanium(IV) oxide nanocrystal

• DOI: 10.1016/j.molcata.2012.03.003
• 发表时间: 2012-06
• 期刊: Journal of Molecular Catalysis A-chemical
• 作者: N. Murakami;Shota Kawakami;Toshiki Tsubota;T. Ohno

粒子サイズ制御された十面体形状アナタース型酸化チタン(IV)の光触媒特性

可控粒径十面体锐钛矿型氧化钛的光催化性能

• 发表时间: 2011
• 作者: 村上直也;川上翔大;横野照尚
• 通讯作者: 横野照尚