One step synthesis of high efficiency nickel/mesoporous TiO2 hybrid catalyst for hydrogen evolution reaction

FRANCESCHINI, ESTEBAN A.; GOMEZ, MELISA J.; LACCONI, GABRIELA I.

Journal of Energy Chemistry

Elsevier

Año: 2018

2095-4956

ickel-TiO2 hybrid catalysts are synthesized by electrodeposition and their catalytic activity with respect to thehydrogen evolution reaction is analyzed. Two types of titanium oxide particles, which are commercial particles ofdense TiO2 and mesoporous TiO2 particles synthesized by an aerosol method, are incorporated into the matrix of thenickel catalyst,. Both nickel catalysts containing TiO2 particles presented higher catalytic activity than theconventional nickel Watts catalyst. Mesoporous TiO2-modified nickel catalyst showed the highest catalytic activitytowards HER in alkaline medium. In addition, this type of nickel catalyst increases its catalytic activity after ageingtreatment, which is an indication of an increase in the electro-active area of the electrode.