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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Facile One-Step Electrodeposition Fabrication of Amorphous MoS2 Catalysts in Titanium for Hydrogen Evolution Reaction

Full text
Author(s):
Marina Medina ; Patricia G. Corradini ; Lucia H. Mascaro
Total Authors: 3
Document type: Journal article
Source: Journal of the Brazilian Chemical Society; v. 30, n. 10, p. 2210-2218, Out. 2019.
Abstract

Hydrogen is seen as a future energy carrier that will assist the global energy fuel demand. However, it is still necessary to study efficient and inexpensive catalysts that can be used on a large scale to make this technology practical. In this paper the electrodeposition of molybdenum disulfide (MoS2) film on titanium (Ti) substrate was performed by cyclic voltammetry and the film was evaluated for hydrogen evolution reaction (HER). The deposition optimized conditions was 25 cycles and 4 mmol L-1 (NH4)2[MoS4] in 0.1 mol L-1 NaClO4 solution. The film was characterized from X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and they showed an amorphous structure and high catalytic activity for HER. The Tafel slope was 85 mV dec-1 and overpotential at -10 mA cm-2 was -139 mV showing that Ti substrate compared with fluorine-tin doped oxide (FTO) substrate favored the HER and electroactivity of MoS2 films. (AU)

FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 18/16401-8 - Photocatalysts and photoelectrodes for obtaining renewable fuels
Grantee:Lucia Helena Mascaro Sales
Support type: Regular Research Grants
FAPESP's process: 14/50249-8 - Green chemistry: sustainable synthetic methods employing benign solvents, safer reagents, and bio-renewable feedstock
Grantee:Arlene Gonçalves Corrêa
Support type: Research Grants - Research Centers in Engineering Program
FAPESP's process: 17/12794-2 - Synthesis, characterization and application of MoS2 and WS2 films in photoelectrocatalysis for hydrogen production
Grantee:Marina Medina da Silva
Support type: Scholarships in Brazil - Doctorate (Direct)