Synthesis of Visible Light Active Photocatalyst Controlling the Nanostructure of Layered Titanate
控制层状钛酸盐纳米结构的可见光活性光催化剂的合成
基本信息
- 批准号:12450349
- 负责人:
- 金额:$ 9.22万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2000
- 资助国家:日本
- 起止时间:2000 至 2002
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Layered titanate, H_2Ti_4O_9 incorporating CdS, Fe_2O_3 and TiO_2, H_2Ti_4O_9 simultaneously alloyed with Cu^<2+> and Nb^<5+> or Ta^<5+>, and layered HTaWO_6 incorporating TiO_2 and Pt were prepared and their photocatarytic activities under visible light irradiation were investigated. All samples possessed photocatalytic activity for the hydrogen evolution from sodium sulfide or methano aqeous solution under visible light irradiation (λ 0x(3E) 400 nm). HTaWO_6 was unstable in methanol aqueous solution under UV light irradiation, but HTaWO_6/(TiO_2,Pt) nanocomposite was stable and showed visible light active photocatalytic activity for evolving hydrogen gas from methanol aqueous solutionn. The excellent photocatalitic activity of semiconductor particles incorporated was attributed to the charge separation by guest to host electron transfer. By analyzing the fluorescence life times of CdS and TiO_2 incorporated in H_2Ti_4O_9 and H_4Nb_6O_<17>, it was confirmed that photoinduced electron in CdS and/or TiO_2 in the interlayer quickly transfer to the host layers. The electron transfer rate constant from CdS to H_2Ti_4O_9 and/or H_4Nb_6O_<17> were determined as ca. 10^6 sec^<-1> and those from TiO_2 to H_2Ti_4O_9 and H_4Nb_6O_<17> were 10^8 sec^<-1>.
分层的钛酸盐,H_2TI_4O_9掺入CD,Fe_2O_3和TIO_2,H_2TI_4O_9,简单地与Cu^<2+>和Nb^<5+>或nb^<5+>或Ta^<5+>合金合金,并在调查了Photocatary Actifir Inradirifectiquiatient and pectibiation中,htawo_6 comporiation wapibil wapiber way rifractifectirefiration。所有样品均具有从硫化钠或可见光照射下(λ0x(3E)400 nm)下从硫化钠或甲烷溶液进化的光催化活性。 HTAWO_6在甲醇水溶液中在紫外光照射下是不稳定的,但是HTAWO_6/(TIO_2,PT)纳米复合材料是稳定的,显示可见的光活性光催化活性,可从甲醇水溶液中演化氢气。掺入的半导体颗粒的出色光催化活性归因于客人的电荷分离以宿主电子传递。通过分析H_2TI_4O_9和H_4NB_6O__ <17>中CDS和TIO_2的荧光寿命时间,可以证实,可以证实,在CDS中摄影诱导的电子和/或TIO_2在Interlayer中迅速转移到宿主层中。电子传输速率从CD到H_2TI_4O_9和/或H_4NB_6O__ <17>确定为CA。 10^6 sec^<-1>以及从tio_2到h_2ti_4o_9和h_4nb_6o__ <17>的那些是10^8 sec^<-1>。
项目成果
期刊论文数量(66)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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{{ truncateString('SATO Tsugio', 18)}}的其他基金
Development of innovative automobile exhaust gas purifying catalyst by solvothermal reaction
溶剂热反应创新型汽车尾气净化催化剂的开发
- 批准号:
24651068 - 财政年份:2012
- 资助金额:
$ 9.22万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Synthesis of Silica-coated Ceria Nanoparticles by Soft Solution Chemical Reactions and their UV-shielding Properties
软溶液化学反应合成二氧化硅包覆二氧化铈纳米粒子及其紫外屏蔽性能
- 批准号:
13555239 - 财政年份:2001
- 资助金额:
$ 9.22万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Synthesis and Photo-chemical Properites of Semiconductors Incorporated in the Interlayer
中间层半导体的合成和光化学性能
- 批准号:
08455403 - 财政年份:1996
- 资助金额:
$ 9.22万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Characteristics of Ceris-Doped Tetragonal Zirconia Powders Prepared Using Alcohol as a Crystallization Solvent
醇为结晶溶剂制备的铈掺杂四方氧化锆粉体的特性
- 批准号:
04650690 - 财政年份:1992
- 资助金额:
$ 9.22万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Photo-Chemical Energy Conversion by Pillared Hydrotalcite
柱状水滑石的光化学能转换
- 批准号:
63550570 - 财政年份:1988
- 资助金额:
$ 9.22万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)