Influence of solvent in solvothermal synthesis of Cu3SnS4: Morphology and band gap dependant electrocatalytic hydrogen evolution reaction and photocatalytic dye degradation

Cu3SnS4 (CTS) with various morphologies have been synthesized via solvothethermal method. The influence of different solvents such as deionized water (CTS-DI), N,N-dimethylformamide (CTS-DMF) and poly ethylene glycol (CTS-PEG) has been investigated. XRD patterns of all the prepared samples exhibit t...

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Bibliographic Details
Published in:International journal of hydrogen energy 2018-12, Vol.43 (51), p.22861-22873
Main Authors: Maheskumar, V., Selvaraju, T., Vidhya, B.
Format: Article
Language:English
Subjects:
Cu3SnS4
Electrocatalyst
Photocatalyst
Solvothermal
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Summary:Cu3SnS4 (CTS) with various morphologies have been synthesized via solvothethermal method. The influence of different solvents such as deionized water (CTS-DI), N,N-dimethylformamide (CTS-DMF) and poly ethylene glycol (CTS-PEG) has been investigated. XRD patterns of all the prepared samples exhibit tetragonal structure with preferential orientation along (1 1 2) direction. It is found that the solvents play a key role to tune the morphology and band gap. The morphology varied as irregular sheet like structure, mesoporous structure and feather like structure for CTS-DI, CTS-DMF and CTS-PEG, respectively. The band gap was found to be 1.33, 1.65 and 1.19 eV for CTS-DI, CTS-DMF and CTS-PEG, respectively. Electrocatalytic hydrogen evolution reaction and photocatalytic dye degradation of MB were tested using the prepared CTS samples. As an electrocatalyst or photocatalyst, it is found that CTS-DMF with mesopours structure shows an enhanced catalytic activity with lower overpotential, a smaller Tafel slope (88 mV/dec), high stability in acidic medium and an enhanced photocatalytic activity. A more realistic mechanism for the photocatalytic activity of CTS-DMF is proposed. [Display omitted] •Cu3SnS4 (CTS) nanoparticles are synthesized via a simple solvothermal method using different solvents.•The different solvents used is determined to influence the morphology of the prepared material.•Morphology of the prepared samples influences its electrocatalytic and photocatalytic performance.•The possible electrocatalytic and photocatalytic mechanism has been proposed.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2018.09.072