A general and controllable synthesis of ComSn (Co9S8, Co3S4, and Co1−xS) hierarchical microspheres with homogeneous phases
- 23 April 2013
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in CrystEngComm
- Vol. 15 (25), 5087-5092
- https://doi.org/10.1039/c3ce40251g
Abstract
This work presents a facile and general solvothermal approach to prepare hierarchical cobalt sulfides (ComSn) microflowers, which are composed of curved nanosheets. The homogeneous phases of Co9S8, Co3S4 and Co1−xS could be obtained just by adjusting the molar ratio of cobalt acetate to thiourea. The structure and morphology of the as-prepared cobalt sulfides were investigated by powder X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy (TEM) and high-resolution TEM, X-ray photoelectron spectroscopy and N2-sorption measurements. The possible growth process was discussed on the basis of time-dependent experimental results. The ComSn materials exhibited great electrocatalytic activities towards both oxygen reduction and oxygen evolution reactions, making them a kind of promising electrode materials for fuel cells and batteries.Keywords
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