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For an active hydrogen gas generation through water dissociation, the sluggish oxygen evolution reaction (OER) kinetics due to large overpotential is a main hindrance. Herein, a simple approach is used to produce composite material based on TiO2/Co3O4 for efficient OER and overpotential is linearly reduced with increasing amount of TiO2. The scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM) investigations reveal the wire like morphology of composite materials, formed by the self-assembly of nanoparticles. The titania nanoparticles were homogenously distributed on the larger Co3O4 nanoparticles. The powder x-ray diffraction revealed a tetragonal phase of TiO2 and the cubic phase of Co3O4 in the composite materials. Composite samples with increasing TiO2 content were obtained (18%, 33%, 41% and 65% wt.). Among the composites, cobalt oxide …
Publication date: 
29 Jan 2021

Umair Aftab, Aneela Tahira, Alessandro Gradone, Vittorio Morandi, Muhammad Ishaq Abro, Muhammad Moazam Baloch, Adeel Liaquat Bhatti, Ayman Nafady, Alberto Vomiero, Zafar Hussain Ibupoto

Biblio References: 
International Journal of Hydrogen Energy