Grafting of Pd on Covalently and Noncovalently Modified N-Doped Graphene for Electrocatalysis
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Chemistry Of Materials 2017, 29(5), 2066-2073
Functional Nanosheet Synthons by Covalent Modification of Transition-Metal Dichalcogenides
- Stanislav Presolski, Lu Wang, Adeline Huiling Loo, Adriano Ambrosi, Petr Lazar, Vaclav Ranc, Michal Otyepka, Radek Zboril, Ondrej Tomanec, Juri Ugolotti, Zdeněk Sofer, Martin Pumera*
We report on the facile preparation of versatile MoS2 thiobarbituric acid conjugates, which, in addition to excellent electrochemical behavior, can serve as nanosheet platforms for further functionalization in a multitude of applications. We show that chemically exfoliated MoS2 was extensively modified with up to 50% surface coverage, while maintaining its metallic character, and that the strategy can be extended to MoSe2, WS2, and WSe2. The covalent functionalization endowed the materials not only with good aqueous dispersibility, but also with improved hydrogen evolution reaction (HER) activity, as well as promise in the oxidative detection of DNA nucleobases in solution.
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