Platinum-like HER onset in a GNR/MoS 2 quantum dot heterostructure through curvature-dependent electron density reconfiguration.

Autor: Nair AN; Department of Chemistry and Biochemistry, The University of Texas at El Paso, El Paso, Texas 79968, USA. sreenivasan@utep.edu., Sanad MF; Department of Environmental Sciences and Engineering, The University of Texas at El Paso, El Paso, Texas 79968, USA., Chava VSN; Department of Chemistry and Biochemistry, The University of Texas at El Paso, El Paso, Texas 79968, USA. sreenivasan@utep.edu., Sreenivasan ST; Department of Chemistry and Biochemistry, The University of Texas at El Paso, El Paso, Texas 79968, USA. sreenivasan@utep.edu.
Jazyk: angličtina
Zdroj: Chemical communications (Cambridge, England) [Chem Commun (Camb)] 2022 Sep 15; Vol. 58 (74), pp. 10368-10371. Date of Electronic Publication: 2022 Sep 15.
DOI: 10.1039/d2cc03801c
Abstrakt: Tailoring the curvature-directed lattice strain in GNRs along with optimal surface anchoring of molybdenum disulfide (MoS 2 ) quantum dots (QDs) can lead to a unique heterostructure with Pt-like HER activity (onset potential -60 mV). The curvature-induced electronic charge redistribution at the curved region in the graphene nanoribbons allows a facile GNR-MoS 2 interfacial charge transfer in the heterostructure, making the interfacial sulfur (S) more active towards the HER. The density functional theory (DFT) calculations confirmed electronically activated interfacial S-based catalytic centers in the curved GNR-based heterostructure leading to Pt-like HER activity.
Databáze: MEDLINE
Externí odkaz: