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

Main Article Content

Anh D. Nguyen Phuong T. Pham An T. Dam Phong D. Tran

Abstract

Amorphous molybdenum sulfide (MoSx) 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 MoSx, the electrochemical oxidation and reduction of a tetrathiomolybdate salt ([MoS4]2-) represents the most convenient. Herein we describe new insights onto the electrochemical oxidation of [MoS4]2- to grow MoSx thin films by employing an advanced technique called electrochemical quartz crystal microbalance (EQCM). These new findings enrich the current understanding of the structure, growth mechanism, redox property and catalytic operation of the MoSx material.
One sentence summary: a new mechanism for growth of amorphous molybdenum sulfide thin films via the electrochemical polymerization of [MoS4]2- is discussed.

 

DOI: https://doi.org/10.31276/VJSTE.61(4).09-13

Article Details

How to Cite
NGUYEN, Anh D. et al. New insights into the formation of amorphous molybdenum sulfide from a tetrathiomolybdate precursor. Vietnam Journal of Science, Technology and Engineering, [S.l.], v. 61, n. 4, p. 9-13, dec. 2019. ISSN 2525-2461. Available at: <http://vietnamscience.vjst.vn/index.php/VJSTE/article/view/260>. Date accessed: 06 apr. 2020.
Section
PHYSICAL SCIENCES