二硒醚
二硒化钨
钴
接口
无机化学
钨
卟啉
过渡金属
材料科学
催化作用
钼
化学
光化学
生物化学
有机化学
政治学
硒
法学
作者
Antonia Kagkoura,Christina Stangel,Raúl Arenal,Nikos Tagmatarchis
出处
期刊:Nanomaterials
[MDPI AG]
日期:2022-12-22
卷期号:13 (1): 35-35
被引量:1
摘要
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 (MoSe2) and tungsten diselenide (WSe2) 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 MoSe2 and WSe2. Hybrids exhibited lower overpotential, easier reaction kinetics, higher conductivity, and excellent stability after 10,000 ongoing cycles in acidic and alkaline electrolytes compared to MoSe2 and WSe2. Markedly, MoSe2-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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