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Title: Semiconductor electrochemistry of coal pyrite. Technical progress report, October--December 1993

Abstract

The effects of the semiconductor properties of pyrite on its electrochemical behavior have been explored with the aid of energy level diagram which illustrate the relationship between the energy levels of the solid land the equilibrium potentials of the redox couples in the aqueous solution. A novel approach to the study of pyrite electrochemistry was initiated. This approach is based on pyrite microelectrodes synthesized via aqueous phase precipitation. Preliminary results show that photocurrents can be generated by illumination of the pyrite particles synthesized in our laboratory. Central to this research is the recognition that pyrite is a semiconductor material. (Photo) electrochemical experiments are conducted to unravel the mechanisms of anodic and cathodic processes such as those associated with pyrite decomposition and the reduction of oxidants such as molecular oxygen and the ferric ion.

Authors:
;
Publication Date:
Research Org.:
Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10157565
Report Number(s):
DOE/PC/91303-T10
ON: DE94013065; BR: AA1525050
DOE Contract Number:  
FG22-91PC91303
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Mar 1994
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; PYRITE; ELECTROCHEMISTRY; COAL; SEMICONDUCTOR MATERIALS; PHOTOCHEMISTRY; DECOMPOSITION; OXIDES; REDUCTION; PROGRESS REPORT; 010600; 400400; 400500; PROPERTIES AND COMPOSITION

Citation Formats

Osseo-Asare, K., and Wei, D. Semiconductor electrochemistry of coal pyrite. Technical progress report, October--December 1993. United States: N. p., 1994. Web. doi:10.2172/10157565.
Osseo-Asare, K., & Wei, D. Semiconductor electrochemistry of coal pyrite. Technical progress report, October--December 1993. United States. doi:10.2172/10157565.
Osseo-Asare, K., and Wei, D. Tue . "Semiconductor electrochemistry of coal pyrite. Technical progress report, October--December 1993". United States. doi:10.2172/10157565. https://www.osti.gov/servlets/purl/10157565.
@article{osti_10157565,
title = {Semiconductor electrochemistry of coal pyrite. Technical progress report, October--December 1993},
author = {Osseo-Asare, K. and Wei, D.},
abstractNote = {The effects of the semiconductor properties of pyrite on its electrochemical behavior have been explored with the aid of energy level diagram which illustrate the relationship between the energy levels of the solid land the equilibrium potentials of the redox couples in the aqueous solution. A novel approach to the study of pyrite electrochemistry was initiated. This approach is based on pyrite microelectrodes synthesized via aqueous phase precipitation. Preliminary results show that photocurrents can be generated by illumination of the pyrite particles synthesized in our laboratory. Central to this research is the recognition that pyrite is a semiconductor material. (Photo) electrochemical experiments are conducted to unravel the mechanisms of anodic and cathodic processes such as those associated with pyrite decomposition and the reduction of oxidants such as molecular oxygen and the ferric ion.},
doi = {10.2172/10157565},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {3}
}