Synthesis and Characterization of Mo<sub>2</sub>C/MoO<sub>3</sub> Nanohybrid as Electrocatalyst for Hydrogen Evolution Reaction
Sarno, M.
Cirillo, C.
Ponticorvo, E.
Ciambelli, P.
Download PDF

How to Cite

Sarno M., Cirillo C., Ponticorvo E., Ciambelli P., 2015, Synthesis and Characterization of Mo2C/MoO3 Nanohybrid as Electrocatalyst for Hydrogen Evolution Reaction, Chemical Engineering Transactions, 43, 943-948.
Download PDF


The two-step preparation of core-shell Mo2C/MoO3 nanoplatelets (composed of an MoO3 core covered by 3 nm Mo2C outer layer) is reported. The process consists of the thermolysis of a solid precursor, ammonium molybdate ((NH4)6Mo7O24•·4H2O), in a reactor fed by nitrogen (200 cm3(STP)/min), heated from room temperature to 700 °C, followed by a controlled Chemical Vapor Deposition (CVD) of CH4, 10 v/v % innitrogen, for 10 minutes, monitored on-line by continuous gas analyzers.
A Tafel slope of 48 mV/decade was measured for the Mo2C/MoO3 nanohybrid suggesting the Volmer- Heyrovsky mechanism for the nanohybrid-catalyzed HER. MoO3 deserves as a highly nanostructured conductive core, while the thin Mo2C coating serves as both a HER catalyst and a protective layer.
Download PDF