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The precursors have significant influence on the catalytic activity of nonprecious electrocatalysts for effective water splitting. Herein, we report active electrocatalysts based on cobalt oxide (Co3O4) hierarchical nanostructures derived from four different precursors of cobalt (acetate, nitrate, chloride, and sulfate salts) using the low‐temperature aqueous chemical growth method. It has been found that the effect of precursor on the morphology of nanostructured material depends on the synthetic method. The Co3O4 nanostructures exhibited cubic phase derived from these four precursors. The Co3O4 nanostructures obtained from chloride precursor have demonstrated improved oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) compared to other precursors due relatively higher content of Co3O4 nanostructures at the surface of material. An overpotential of 400 mV versus reversible hydrogen …
Wiley‐VCH Verlag GmbH & Co. KGaA
Publication date: 
1 Apr 2022

Aneela Tahira, Zafar Hussain Ibupoto, Monica Montecchi, Luca Pasquali, Matteo Tonezzer, Ayman Nafady, Huda F Khalil, Raffaello Mazzaro, Vittorio Morandi, Mikhail Vagin, Alberto Vomiero

Biblio References: 
Volume: 69 Issue: 4 Pages: 681-691
Journal of the Chinese Chemical Society