AI Article Synopsis
- * The resulting hybrid materials showed improved performance in hydrogen evolution reactions, achieving lower overpotential and better stability compared to the original forms of MoSe and WSe.
- * This easy modification approach could be applied to other transition metal dichalcogenides, creating potential for new functional nanomaterials in electrocatalysis.
Article Abstract
Easy and effective modification approaches for transition metal dichalcogenides are highly desired in order to make them active toward electrocatalysis. In this manner, we report functionalized molybdenum diselenide (MoSe) and tungsten diselenide (WSe) via metal-ligand coordination with pyridine rings for the subsequent covalent grafting of a cobalt-porphyrin. The new hybrid materials were tested towards an electrocatalytic hydrogen evolution reaction in both acidic and alkaline media and showed enhanced activity compared to intact MoSe and WSe. Hybrids exhibited lower overpotential, easier reaction kinetics, higher conductivity, and excellent stability after 10,000 ongoing cycles in acidic and alkaline electrolytes compared to MoSe and WSe. Markedly, MoSe-based hybrid material showed the best performance and marked a significantly low onset potential of -0.17 V vs RHE for acidic hydrogen evolution reaction. All in all, the ease and fast modification route provides a versatile functionalization procedure, extendable to other transition metal dichalcogenides, and can open new pathways for the realization of functional nanomaterials suitable in electrocatalysis.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9824367 | PMC |
| http://dx.doi.org/10.3390/nano13010035 | DOI Listing |
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