UTILIZATION OF SUNLIGHT USING STRATIFIED PHOTOCATALYSTS
使用分层光催化剂利用阳光
基本信息
- 批准号:11450393
- 负责人:
- 金额:$ 9.41万
- 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:1999
- 资助国家:日本
- 起止时间:1999 至 2001
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The application of photocatalytic reaction to generate hydrogen as a source of energy is being given higher priority in photochemical research. However, the prevention of re-association of the excited electron and the hole within the catalyst has been considered difficult and considerable researches are in progress. We had succeeded to synthesize the ZnS photocatalyst with high-efficiency of hydrogen generation under UV-light irradiation. The stratified-ZnS is synthesized by a novel wet-reaction process from ZnO or Zn(OH)_2 as starting materials and has the "stratified" structure composed by nano-crystals.In this project, we had researched the relationship between the stratified structure and the photocatalytic activity. It was found that the stratified-ZnS formed capsule with a thin layer by ultra fine particles and maintained a potential gradient within this layer, from the results of the morphology observation by transmission electron microscope and the analysis of elemental distribution in the semiconductor particle by energy dispersive x-ray spectroscopy. We can consider that the effective separation of the photoexcited electron and the hole was due to the potential gradient created by the stratified structure.We also applied the synthesis process of stratified material to other compound semiconductor materials considered they can use visible region of sunlight. As the results of experiments, we found the stratified-CdS was able to synthesize from CdO or Cd(OH)_2 as starting materials by the same process in ZnS with optimized conditions. These stratified-CdS particles have photoactivity toward visible light less than 510 nm in wavelength and can generate about 7 litters/hour to 1 m^2 of sunlight irradiation. As the next step for practical application of the hydrogen generation system using the sunlight, we will carry out a research about a sulfur-recycle process by using biochemical or hydrothermal reaction, and so on.
光催化反应制氢作为一种能源的应用正受到光化学研究的高度重视。然而,防止被激发的电子和催化剂中的空穴重新结合一直被认为是困难的,大量的研究正在进行中。我们成功地合成了紫外光照射下高效产氢的硫化锌光催化剂。层状硫化锌是以氧化锌或氢氧化锌为原料,通过湿法反应合成的,具有纳米晶组成的层状结构,研究了层状结构与光催化活性的关系。透射电子显微镜观察和X射线能谱分析结果表明,层状硫化锌由超细粒子形成了具有薄层结构的胶囊,并在这一层内保持了一定的电位梯度。我们可以认为,光激发电子和空穴的有效分离是由于层状结构产生的电势梯度。我们还将层状材料的合成过程应用于其他化合物半导体材料,考虑到它们可以利用太阳光的可见光区域。实验结果表明,在优化的工艺条件下,以氧化镉或氢氧化镉为原料,采用相同的工艺条件,可以在硫化锌中合成层状硫化镉。这些层状的硫化镉颗粒对波长小于510 nm的可见光具有光活性,可以产生大约7升/小时到1m^2的太阳光照射。作为太阳能制氢系统实用化的下一步,我们将开展生化法或水热法等硫磺回收工艺的研究。
项目成果
期刊论文数量(56)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
G.Milczarek: "Novel method for the electrodeposition of thin ZnS films based on cathodic reduction of polysulfide in the presence of zinc hydroxyl complex"Proc. Int. Symp. on Cluster Assembled Mater. IPAP Conf.. Series 3. 67-70 (2001)
G.Milczarek:“基于在锌羟基络合物存在下阴极还原多硫化物的 ZnS 薄膜电沉积新方法”Proc。
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- 影响因子:0
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K.shinoda: "Local Structure and Photocatalytic Property in ZnS Cluster Films"Proc. Int. Symp. on Cluster Assembled Mater.IPAP Conf.. Serise3. 71-74 (2001)
K.shinoda:“ZnS簇薄膜中的局部结构和光催化性能”Proc。
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- 影响因子:0
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秋本結輝: "Synthesis of Higher Dimeric Fullerene oxides"The Electrochemical Society, Meeting Abstracts 197th society meeting. Vol.2000-1. 696 (2000)
Yuki Akimoto:“高级二聚富勒烯氧化物的合成”电化学学会,会议摘要第 197 卷 2000-1。
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- 影响因子:0
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小川貴之: "Automation of Purification for Single-walled Nanotubes"Abstracts of the 19th Fullerene General Symposium 第19回. 7 (2000)
小川隆之:“单壁纳米管纯化的自动化”第19届富勒烯综合研讨会摘要第19期(2000年)。
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- 影响因子:0
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藤田直幸: "Fe-B 電折膜のキャラクタリゼーションと磁気特性"日本応用磁気学会誌. 23. 1197-1200 (1999)
Naoyuki Fujita:“Fe-B 电解折叠薄膜的特性和磁性能”日本应用磁学学会杂志 23. 1197-1200 (1999)。
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TOHJI Kazuyuki其他文献
TOHJI Kazuyuki的其他文献
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{{ truncateString('TOHJI Kazuyuki', 18)}}的其他基金
Development of a Low-energy Flat Plane-emission Panel Device Employing Single-walled Carbon Nanotubes
采用单壁碳纳米管的低能量平面发射面板装置的开发
- 批准号:
26220104 - 财政年份:2014
- 资助金额:
$ 9.41万 - 项目类别:
Grant-in-Aid for Scientific Research (S)
Development of the environmental friendly hydrogen generation system by using sulfur compounds
利用硫化合物开发环保制氢系统
- 批准号:
23241026 - 财政年份:2011
- 资助金额:
$ 9.41万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Development of solar cell using single-walled carbon nanotube with perfect carbon network
使用具有完美碳网络的单壁碳纳米管开发太阳能电池
- 批准号:
23651082 - 财政年份:2011
- 资助金额:
$ 9.41万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
NOVEL SOLAR ENERGY CONVERSION SYSTEM USING WATER AND SULFUR
使用水和硫的新型太阳能转换系统
- 批准号:
14103016 - 财政年份:2002
- 资助金额:
$ 9.41万 - 项目类别:
Grant-in-Aid for Scientific Research (S)
Environment Conservation and Energy Generation by Stratified Photocatalysts Using Sunlight
利用太阳光的分层光催化剂实现环境保护和能源发电
- 批准号:
11555266 - 财政年份:1999
- 资助金额:
$ 9.41万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
EXTRACTION, SEPARATION OF EXOTIC CARBON CLUSTERS FROM FULLERENE SOOT AND ITS APPLICATION
富勒烯烟灰中奇异碳团簇的提取、分离及其应用
- 批准号:
11694119 - 财政年份:1999
- 资助金额:
$ 9.41万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Synthesis and Properties of Homogeneous SWNTs by Using Magnetic Field Controlled Arc-plasma
磁场控制电弧等离子体合成均质单壁碳纳米管及其性能
- 批准号:
11165202 - 财政年份:1999
- 资助金额:
$ 9.41万 - 项目类别:
Grant-in-Aid for Scientific Research on Priority Areas (A)
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