Development of the new polyoxometalate modifed 1102 photomtalyst and the multi-excitation effect

新型多金属氧酸盐改性1102光催化剂的研制及其多重激发效应

• 批准号: 18550140
• 负责人: TOJO Sachiko
• 金额: $ 2.52万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18550140/
• 关键词: TiO_2; polyoxometalate; photocatalytic reactions; laser flash photolysis; electron transfer; radical ions; 光触媒; (3)光触媒

We have successfully investigated the one-electron oxidation and reduction processes of several compounds during POM-mediated TiO_2 photocatalytic reactions using a two-color two-laser flash-photolysis technique. It should he noted that both processes were examined using the same system. For the one-electron oxidation prosses, the efficiency of the one-electron oxidation is significantly enhanced due to electron transfer from the CB of TiO_2 to POM. For the one-electron reduction processes, we observed electron injection from PW_12O_40^4*. to the CB of TiO_2, and achieved storage of the electrons in the TiO_2/PW_12O_40^3-/MV^2+ ternary system using a two-color two-laser irradiation. The present results will lead to further application of TiO_2/POM photocatalysts and demonstrate that the two-color two-laser flash-photolysis technique is a powerflul tool for the investigation of interfacial electron transfer at the heterogeneous surfaces of nanocomposite materials.

利用双色双激光闪光光解技术成功地研究了POM介导的TiO_2光催化反应中几种化合物的单电子氧化还原过程。应该指出，这两个过程是使用同一系统进行审查的。在单电子氧化过程中，由于电子从TiO_2的CB转移到POM，单电子氧化效率显著提高。对于单电子还原过程，我们观察到电子从PW_12O_40注入^[4 *]。研究了TiO_2/PW_（12）O_（40）^3-/MV_（^2+）三元体系中电子的存储。本研究结果为TiO_2/POM光催化剂的进一步应用奠定了基础，并证明双色双激光闪光光解技术是研究纳米复合材料异质表面界面电子转移的有力工具。

项目成果

One-electron redox processes during polyoxometalate-mediated photocatalytic reactions of TiO2 studied by two-color two-laser flash photolysis

• DOI: 10.1002/chem.200501077
• 发表时间: 2006-04-03
• 期刊: CHEMISTRY-A EUROPEAN JOURNAL
• 影响因子: 4.3
• 作者: Tachikawa, T;Tojo, S;Majima, T
• 通讯作者: Majima, T

チタニアナノチューブにおける電荷分離過程の研究

二氧化钛纳米管电荷分离过程的研究

• 发表时间: 2007
• 作者: 藤乗幸子;立川貴士、藤塚 守;真嶋哲朗
• 通讯作者: 真嶋哲朗

Reactivity of Triaryphosphine Peroxyl Radical Cations Generated through the Reaction of Triaryphosphine Radical Cations with Oxygen

三芳膦自由基阳离子与氧反应生成的三芳膦过氧自由基阳离子的反应性

• 发表时间: 2006
• 期刊: J. Org. Chem. 71・21
• 作者: K. Kawai;T. Kimura;H. Yoshida;A. Sugimoto;S. Tojo;M. Fujitsuka;T. Majima;真嶋哲朗;Yasuko Osakada;Hisao Koizumi;Tadao Takada;Takashi Tachikawa;Kazuya Naito;Mamoru Fujitsuka;Xichen Cai;Masanori Sakamoto;Masanori Sakamoto;Minoru Yamaji;Dae Won Cho;Mamoru Fujitsuka;Dae Won Cho;Mamoru Fujitsuka;Takashi Tachikawa;Shingo Samori;Takashi Tachikawa;Koji Nakayama;Takashi Tachikawa;Shingo Samori;Sachiko Tojo
• 通讯作者: Sachiko Tojo

Donor-Acceptor Substituted Tetrakis (phenylethynyl) benzenes as Emissive Molecules during Pulse Radiolysis in Benzene

供体-受体取代的四（苯乙炔基）苯作为苯脉冲辐射分解过程中的发射分子

• 发表时间: 2007
• 期刊: J. Org. Chem. 72
• 作者: 依田高典;後藤励;西村周三;M. Fujitsuka;山本和也;M. Sakamoto;井堀利宏;M. Sakamoto;竹内俊隆;S. Samori
• 通讯作者: S. Samori

Photoinduced charge separation in titania nanotubes.

• DOI: 10.1021/jp063800q
• 发表时间: 2006-07
• 期刊: The journal of physical chemistry. B
• 作者: T. Tachikawa;S. Tojo;M. Fujitsuka;Toru Sekino;T. Majima