CHARACTERIZATION OF TRANSIENT ELECTROCATALYTIC INTERMEDIATES BY SERS
通过 SERS 表征瞬态电催化中间体
基本信息
- 批准号:6494797
- 负责人:
- 金额:$ 13.19万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2001
- 资助国家:美国
- 起止时间:2001-08-01 至 2002-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The net 6-electron, five point reduction of nitrite to ammonia is
catalyzed by the enzyme nitrite reductase. Electrochemical studies have
shown that a series of water soluble porphyrins are efficient
electrocatalyst for the conversion of nitrite to ammonia. The proposed
spectro-electrochemical study will couple a number of surface-
spectroscopic and electrochemical techniques to obtain data on the
molecular structure and lifetimes of the porphyrin intermediates,
generated during the electrocatalytic reduction. From this data, a
comprehensive mechanism for the porphyrin catalyzed electro-reduction of
nitrite to ammonia will be developed.
The specific spectroscopic techniques to be employed are solution Raman
spectroscopy, surface-enhanced Raman spectroscopy, SERS, and its variant,
time-resolved SERS, TRSERS, along with UV/Vis absorption spectroscopy. By
linking the large enhancement afforded by SERS, with multi-channel
detection, molecular structural information on electro-generated catalytic
transients on a SERS active electrode surface will be obtained. Radiation
chemical and photochemical studies will also be incorporated and these
techniques will provide rat constraints for short-lived iron porphyrin
intermediates generated by pulse photochemical processes.
The electrochemical techniques to be employed include cyclic voltammetry,
differential pulse voltammetry and constant potential electrolysis.
Electrochemical techniques provide information regarding the rate of the
reaction and the influence of diffusion, concentration and temperature.
SERS spectroscopy provides information on the chemical identity,
structure, configuration and orientation of the surface species. By
coupling electrochemical experiments with SERS scattering spectroscopy,
both kinetic and structural characteristics of the surface intermediates
will be probed. The conclusion derived from this research will find
application in the characterization and design of modified electrode
surfaces. These modified surfaces possess potential applications in energy
conversion processes, light driven reactions and the activation of small
biological molecules.
净6电子,5点亚硝酸盐还原为氨是
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)
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CHARLES M HOSTEN其他文献
CHARLES M HOSTEN的其他文献
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{{ truncateString('CHARLES M HOSTEN', 18)}}的其他基金
CHARACTERIZATION OF TRANSIENT ELECTROCATALYTIC INTERMEDIATES BY SERS
通过 SERS 表征瞬态电催化中间体
- 批准号:
6453034 - 财政年份:2001
- 资助金额:
$ 13.19万 - 项目类别:
CHARACTERIZATION OF TRANSIENT ELECTROCATALYTIC INTERMEDIATES BY SERS
通过 SERS 表征瞬态电催化中间体
- 批准号:
6434940 - 财政年份:2001
- 资助金额:
$ 13.19万 - 项目类别:
CHARACTERIZATION OF TRANSIENT ELECTROCATALYTIC INTERMEDIATES BY SERS
通过 SERS 表征瞬态电催化中间体
- 批准号:
6352952 - 财政年份:2000
- 资助金额:
$ 13.19万 - 项目类别:
CHARACTERIZATION OF TRANSIENT ELECTROCATALYTIC INTERMEDIATES BY SERS
通过 SERS 表征瞬态电催化中间体
- 批准号:
6344845 - 财政年份:2000
- 资助金额:
$ 13.19万 - 项目类别:
CHARACTERIZATION OF TRANSIENT ELECTROCATALYTIC INTERMEDIATES BY SERS
通过 SERS 表征瞬态电催化中间体
- 批准号:
6219046 - 财政年份:1999
- 资助金额:
$ 13.19万 - 项目类别:
CHARACTERIZATION OF TRANSIENT ELECTROCATALYTIC INTERMEDIATES BY SERS
通过 SERS 表征瞬态电催化中间体
- 批准号:
6316642 - 财政年份:1999
- 资助金额:
$ 13.19万 - 项目类别:
CHARACTERIZATION OF TRANSIENT ELECTROCATALYTIC INTERMEDIATES BY SERS
通过 SERS 表征瞬态电催化中间体
- 批准号:
6271492 - 财政年份:1998
- 资助金额:
$ 13.19万 - 项目类别:
CHARACTERIZATION OF TRANSIENT ELECTROCATALYTIC INTERMEDIATES BY SERS
通过 SERS 表征瞬态电催化中间体
- 批准号:
6107029 - 财政年份:1998
- 资助金额:
$ 13.19万 - 项目类别:
CHARACTERIZATION OF TRANSIENT ELECTROCATALYTIC INTERMEDIATES BY SERS
通过 SERS 表征瞬态电催化中间体
- 批准号:
6296605 - 财政年份:1998
- 资助金额:
$ 13.19万 - 项目类别:
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