Abstract
Copper bismuth sulfide, Cu3BiS3, has been prepared by a solvothermal method that relies on precursor complexing to achieve the desired ternary chalcogenide preferentially over possible binary sulfides in the system. The complexing agent L-cystine also simultaneously donates sulfur to the compound when the complexes are dissociated at a single temperature. This low temperature and use of nitrate salts instead of the commonly employed but less "green" chloride salts provide a path toward cleaner methods. The reaction progression has been characterized by X-ray powder diffraction of sequential samples and shows complete reaction of reagents to form the Wittichenite phase. Spectroscopy analysis reveals confirmation of a direct bandgap at approximately 1.5 eV. Microscopy images reveal varying morphology dominated by nanorods and including particles with aspect ratios approaching 1:1. A low-temperature Cu3BiS3 synthesis employing L-cystine as a sulfur source and complexing agent, nitrate salt precursors, and pure ethylene glycol has been demonstrated.
Original language | English |
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Pages (from-to) | 306-308 |
Number of pages | 3 |
Journal | ACS Sustainable Chemistry and Engineering |
Volume | 1 |
Issue number | 3 |
DOIs | |
Publication status | Published - Mar 4 2013 |
Keywords
- Complexing
- Cu3BiS3
- Energy storage and conversion
- L-Cystine
- Nanoparticles
- Solvothermal
ASJC Scopus subject areas
- Chemistry(all)
- Environmental Chemistry
- Chemical Engineering(all)
- Renewable Energy, Sustainability and the Environment