Thermal Decomposition Mechanism of Metal Xanthate to Metal Sulfide Nanoparticles in Ammonia Solution

H. L. Lian, Q. Shen, Y. J. Fan, L. M. Wu, Z. X. Sun

2018

Abstract

Synthesizing metal sulfide nanoparticle by thermally decomposing metal xanthate is a facile method; however, the proposed mechanism rationalized by Chugaev reaction has not been experimentally proved. Herein we report our experimental evidence to elucidate the reaction mechanism. In this study, ZnS and CdS nanoparticles of a few nanometers in size were prepared by thermal decomposition of a single source precursor of metal xanthates in ammonia solution at temperature as low as 90°C. The particle size and crystallinity were characterized using XRD techniques. The decomposition mechanism studied by UV spectra in combination with GC-MS and FTIR is fund to be a nucleophilic elimination reaction with main products of MS nanoparticles, alkanols, manothiocarbonate, carbonyl sulfide and dixanthogen. Olefin, a main product of Chugaev reaction, is not detected in this process, which suggests that the thermal decomposition mechanism of MX2 to MS is not that of Chugaev reaction.

Paper Citation

in Harvard Style

Lian H., Shen Q., Fan Y., Wu L. and Sun Z. (2018). Thermal Decomposition Mechanism of Metal Xanthate to Metal Sulfide Nanoparticles in Ammonia Solution.In Proceedings of the International Workshop on Materials, Chemistry and Engineering - Volume 1: IWMCE, ISBN 978-989-758-346-9, pages 268-275. DOI: 10.5220/0007437402680275

in Bibtex Style

@conference{iwmce18,
author={H. L. Lian and Q. Shen and Y. J. Fan and L. M. Wu and Z. X. Sun},
title={Thermal Decomposition Mechanism of Metal Xanthate to Metal Sulfide Nanoparticles in Ammonia Solution},
booktitle={Proceedings of the International Workshop on Materials, Chemistry and Engineering - Volume 1: IWMCE,},
year={2018},
pages={268-275},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007437402680275},
isbn={978-989-758-346-9},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Materials, Chemistry and Engineering - Volume 1: IWMCE,
TI - Thermal Decomposition Mechanism of Metal Xanthate to Metal Sulfide Nanoparticles in Ammonia Solution
SN - 978-989-758-346-9
AU - Lian H.
AU - Shen Q.
AU - Fan Y.
AU - Wu L.
AU - Sun Z.
PY - 2018
SP - 268
EP - 275
DO - 10.5220/0007437402680275