Design and Development of Second-generation TiO2 Photocatalyst Operating under Solar Beam Irradiation for the Decomposition of NOx
太阳光照射下分解氮氧化物的第二代TiO2光催化剂的设计与开发
基本信息
- 批准号:09555272
- 负责人:
- 金额:$ 6.85万
- 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:1997
- 资助国家:日本
- 起止时间:1997 至 1998
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In this research project, the design and development of TiO_2 photocatalysts which can absorb visible light and operate efficiently and effectively not only under ultraviolet light but also upon irradiation with visible light or solar beam for the decomposition of NO into N_2 and 0_2 were carried out. Until now, photocatalytic reactions involving TiO_2 photocatalysts for the decomposition reaction of nitrogen oxides (NOx) in the atmosphere are known to proceed only under irradiation of TiO2 photocatalysts with ultraviolet light having shorter wavelength than 380nm, allowing the use of 3% of solar beam. In order to use solar beam more efficiently, we have elucidated the modification of TiO_2 photocatalyst by applying the advanced metal ion-implantation with various transition metal ions such as Cr highly accelerated by high voltage. A combination of such metal ion-implantation and the subsequent calcination of the catalyst in oxygen at around 723 K enables a large shift in the absorption bands of TiO_2 toward visible-light regions, its extent depending on the amount of Cr ions implanted. Such Cr ion-implanted TiO_2 catalysts successfully decompose NO into N_2, 0_2 and N_2O even at 275 K under irradiation with visible light longer than 450nm. Furthermore, the reaction proceeded at exactly the same rate to that of the unimplanted TiO_2 catalysts under band-gap UV light irradiation. Under outdoor solar light irradiation at ordinary temperatures, the Cr ion-implanted TiO_2 catalyst exhibited photocatalytic reactivity several times higher than the original unimplanted TiO_2 photocatalyst. It can be said that present research has opened the way to many innovative possibilities, significantly to address urgent environmental problems, and can also be considered an important breakthrough in the utilization of solar energy.
本研究计划设计并开发了一种不仅能在紫外光下,而且能在可见光或太阳光照射下高效、有效地吸收可见光的TiO_2光催化剂,用于将NO分解为N_2和O_2。迄今为止,已知用于分解大气中的氮氧化物(NOx)的涉及TiO_2光催化剂的光催化反应仅在具有短于380nm的波长的紫外光的照射下进行,允许使用3%的太阳光束。为了更有效地利用太阳光,我们采用了先进的金属离子注入技术,在高压下注入了各种过渡金属离子,如Cr,对TiO_2光催化剂进行了改性。这种金属离子注入和随后在氧气中在723 K左右煅烧催化剂的组合使得TiO_2的吸收带向可见光区大幅度移动,其程度取决于Cr离子注入的量。Cr离子注入的TiO_2催化剂在275 K、450 nm可见光照射下仍能成功地将NO分解为N_2、O_2和N_2O。此外,在带隙紫外光照射下,该反应以与未注入的TiO_2催化剂完全相同的速率进行。在常温室外太阳光照射下,Cr离子注入的TiO_2催化剂的光催化活性比未注入的TiO_2催化剂提高数倍。可以说,目前的研究为许多创新的可能性开辟了道路,显著地解决了紧迫的环境问题,也可以被认为是太阳能利用的重要突破。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
安保正一: "可視光利用を目指した第二世代酸化チタン光触媒(季刊化学総説)" 学会出版センター (印刷中), 印刷中 (1998)
安房庄一:“旨在利用可见光的第二代氧化钛光催化剂(化学评论季刊)”学会出版中心(印刷版),印刷版(1998)
- DOI:
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- 影响因子:0
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- 通讯作者:
Maskazu ANPO: "Photocatalytic Reduction of CO2 with H2O on Titanium Oxide Anchored within Zeolites" Stud.Surf.Sci.Catal. 114. 177-182 (1998)
Maskazu ANPO:“在沸石内固定的二氧化钛上用 H2O 光催化还原 CO2”Stud.Surf.Sci.Catal。
- DOI:
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- 影响因子:0
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安保正一: "酸化チタン光触媒の開発と環境・エネルギー分野への応用展開 ー固定化・可視 光化・薄膜化・活性制御・評価手法-" 技術情報協会, 13 (1997)
安房庄一:“氧化钛光催化剂的开发及其在环境和能源领域的应用-固定化、可见光产生、薄膜形成、活性控制和评价方法”技术信息协会,13(1997)
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- 影响因子:0
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- 通讯作者:
S.C.Moon, M.Fujino, H.Yamashita and M.Anpo: "Characterization of Zirconium-Silicon Binary Oxide Catalysts Prepared by the Sol-Gel Method and Their Photocatalytic Activity for the Isomerization of 2-Butene" J.Phys.Chem.101. 369-373 (1997)
S.C.Moon、M.Fujino、H.Yamashita 和 M.Anpo:“溶胶-凝胶法制备的锆硅二元氧化物催化剂的表征及其对 2-丁烯异构化的光催化活性”J.Phys.Chem.101
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- 影响因子:0
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- 通讯作者:
M.Anpo, Y.Ichihashi, Y.Tamada, H.Yamashita, T.Yoshinari and Y.Suzuki: "The Utilization of Visible Light by Titanium Dioxide Photocatalysts Modified by a Metal Ion Implantation Method" Proc.Intern.Sym.on Photoelectrochem., Paris. 331-334 (1997)
M.Anpo、Y.Ichihashi、Y.Tamada、H.Yamashita、T.Yoshinari 和 Y.Suzuki:“金属离子注入法修饰的二氧化钛光催化剂对可见光的利用”Proc.Intern.Sym.on Photochemical
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ANPO Masakazu其他文献
ANPO Masakazu的其他文献
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{{ truncateString('ANPO Masakazu', 18)}}的其他基金
Development of Efficient Water Splitting System Enabling Separate Evolution of H_2 and O_2 from Water Using an Unique Titanium Oxide Thin Film and Solar Light
开发高效水分解系统,利用独特的氧化钛薄膜和太阳光从水中分离出 H_2 和 O_2
- 批准号:
20360366 - 财政年份:2008
- 资助金额:
$ 6.85万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Design and Development of Unique Photocatalytic Systems for the Decomposition of NOx
设计和开发用于分解氮氧化物的独特光催化系统
- 批准号:
10044170 - 财政年份:1998
- 资助金额:
$ 6.85万 - 项目类别:
Grant-in-Aid for Scientific Research (B).
The Design and Development of Novel Titanium Oxide Photocatalysts Prepared on the Various Plate Materials by an Advanced Ion Engineering Techniques
采用先进离子工程技术在各种板材上制备新型氧化钛光催化剂的设计与开发
- 批准号:
10650816 - 财政年份:1998
- 资助金额:
$ 6.85万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Design of Active Photocatalytic System for Removal of NOx
活性光催化脱硝系统设计
- 批准号:
05044110 - 财政年份:1993
- 资助金额:
$ 6.85万 - 项目类别:
Grant-in-Aid for international Scientific Research
Preparation of Photocatalysts in Micro-pores of Zeolite and Their Reaction Dynamics
沸石微孔光催化剂的制备及其反应动力学
- 批准号:
05453123 - 财政年份:1993
- 资助金额:
$ 6.85万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
Design of Highly Active Photocatalytic System for the Removal of NOx
高活性光催化脱硝系统设计
- 批准号:
02044125 - 财政年份:1990
- 资助金额:
$ 6.85万 - 项目类别:
Grant-in-Aid for international Scientific Research
Preparation of Ultra-Thin-Film Anchored Metal Oxide Catalysts Via Laser Excitation and Their Photocatalytic Activities
激光激发超薄膜锚定金属氧化物催化剂的制备及其光催化活性
- 批准号:
01550632 - 财政年份:1989
- 资助金额:
$ 6.85万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Preparation of Highly Dispersed Anchored Catalysts by Photochemical Activation of Adsorbed Species and Their Photocatalytic Activities
吸附物质光化学活化制备高分散锚定催化剂及其光催化活性
- 批准号:
62550595 - 财政年份:1987
- 资助金额:
$ 6.85万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
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