Studies in the Fundamental Nature of Mineral Surface Reactivity
Studies in the Fundamental Nature of Mineral Surface Reactivity
批准号:
9628023
负责人:
Michael Hochella
金额:
$17.46万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1996
资助国家:
美国
项目状态:
已结题
起止时间:
1996-06-01 至 1999-12-31
中文摘要
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英文摘要
9628023 Hochella The proposed research continues long-standing research committed to rethinking, and sometimes reformulating, perceptions of how mineral surfaces communicate with their geologic environment. The specific objectives are: (1) To show that sophisticated mineral surface investigations can be performed on natural mineral surfaces instead of only surfaces created by fracture. (2) To probe electronic structure of different sites on unreacted hematite, pyrite, and pyrrhotite surfaces at the atomic level. (3) To probe the electronic structure of reaction products on these surfaces at the atomic level. (4) To characterize complex surface reaction sequences, and to specifically define "reactive surface area" for a given reaction on a given mineral surface. (5) To incorporate newly identified fundamental reaction mechanisms and processes into kinetic models that describe macroscopic observables. The methods that will be employed include: experimental ultra-high vacuum scanning tunneling microscopy and spectroscopy, calculation of tunneling images and spectra at the ab initio level, ultra-violet and x-ray photoelectron spectroscopy, low energy electron diffraction, scanning force microscopy and standard wet chemistry techniques. The significance of the proposed research is in its ability to determine fundamental reaction parameters and mechanisms.
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NanoEarth 2018 Workshop
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批准号:1822111
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项目类别:Standard Grant
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资助金额:$1.89万
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财政年份:2018
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负责人:Michael Hochella
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依托单位:
Working Group Activity on Molecular- and Nano-Environmental Geochemistry
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批准号:0630535
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:2006
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负责人:Michael Hochella
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依托单位:
IGERT: EIGER - Exploring Interfaces through Graduate Education and Research
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批准号:0504196
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项目类别:Continuing Grant
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资助金额:$310.18万
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财政年份:2005
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负责人:Michael Hochella
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依托单位:
NIRT: Nanoscale Processes in the Environment: Nanobiogeochemistry of Microbe/Mineral Interactions
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批准号:0103053
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项目类别:Standard Grant
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资助金额:$100.0万
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财政年份:2001
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负责人:Michael Hochella
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依托单位:
Mineral-Water Interface Dynamics: The Complex Interactions of Redox Active Metals With Manganese Oxide Surfaces
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批准号:9902996
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项目类别:Standard Grant
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资助金额:$21.48万
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财政年份:1999
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负责人:Michael Hochella
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依托单位:
Development of Scanning Tunneling Spectroscopy (STS) for Research in Mineralogy and Geochemistry
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批准号:9527092
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项目类别:Standard Grant
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资助金额:$10.92万
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财政年份:1996
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负责人:Michael Hochella
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依托单位:
Studies in Mineral Surface Reactivity and Geochemistry to the Atomic Level
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批准号:9305031
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项目类别:Standard Grant
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资助金额:$16.5万
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财政年份:1993
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负责人:Michael Hochella
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依托单位:
Mineral Surface and Interface Reactions Observed at the Atomic Level Using Atomic Force and Scanning Tunneling Microscopy and Spectroscopy
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批准号:9296240
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项目类别:Standard Grant
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资助金额:$3.95万
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财政年份:1992
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负责人:Michael Hochella
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依托单位:
Mineral Surface and Interface Reactions Observed at the Atomic Level Using Atomic Force and Scanning Tunneling Microscopy and Spectroscopy
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批准号:9105000
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项目类别:Standard Grant
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资助金额:$4.38万
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财政年份:1991
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负责人:Michael Hochella
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依托单位:
海外基金