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New insights into the formation of amorphous molybdenum sulfide from a tetrathiomolybdate precursor

Anh D. Nguyen, Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Phuong T. Pham, An T. Dam, Phong D. Tran, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology
2019 Vietnam Journal of Science Technology and Engineering  

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Amorphous molybdenum sulfide (MoS x ) is an attractive Pt-free catalyst for the hydrogen evolution reaction (HER) in both neutral and acidic pH electrolytes. Among the available approaches for the preparation of MoS x , the electrochemical oxidation and reduction of a tetrathiomolybdate salt ([MoS 4 ] 2-) represents the most convenient. Herein we describe new insights onto the electrochemical oxidation of [MoS 4 ] 2to grow MoS x thin films by employing an advanced technique called
more » ... l quartz crystal microbalance (EQCM). These new findings enrich the current understanding of the structure, growth mechanism, redox property and catalytic operation of the MoS x material. One sentence summary: a new mechanism for growth of amorphous molybdenum sulfide thin films via the electrochemical polymerization of [MoS 4 ] 2is discussed. Keywords: EQCM, MoS x formation, [MoS 4 ] 2-, [Mo 3 S 11 ] building block.
doi:10.31276/vjste.61(4).09-13 fatcat:loumdnjjbfeariuvkkfgisopqq
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Anh D. Nguyen, Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Phuong T. Pham, An T. Dam, Phong D. Tran, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology. "New insights into the formation of amorphous molybdenum sulfide from a tetrathiomolybdate precursor." Vietnam Journal of Science Technology and Engineering 61.4 (2019) 9-13