화학공학소재연구정보센터
Applied Surface Science, Vol.489, 976-982, 2019
Electrochemical hydrogen evolution and CO2 reduction over hierarchical MoSxSe2-x hybrid nanostructures
Hydrogen production and CO2 energy conversion have increasingly attracted attention and developing electrochemical energy catalysts has widely been performed to achieve clean energy and energy-recycle goals. Herein, hierarchical MoSxSe2-x hybrid nanostructures were synthesized by the hydrothermal method, and the fundamental physiochemical properties were fully characterized by X-ray diffraction crystallography, scanning electron microscopy, high-resolution transmission electron microscopy, elemental mapping, Raman, and X-ray photoelectron spectroscopy. Electrochemical hydrogen evolution reaction was tested in an acidic electrolyte to show a catalytic activity order of MoS2 < MoS1.6Se0.4 < MoS1Se1 < MoS0.4Se1.6 < MoSe2 at an applied potential of -0.7 V. Electrochemical CO2 reduction activity was also examined to show the highest enhancement factor for MoS0.4Se1.6. The present result could be very useful information for improving catalytic activities of various hydrogen production and CO2 recycle catalysts.