Molybdenum Disulfide Bilayers Hybridized With Reduced Graphene Oxide Nanosheets for Enhanced Hydrogen Evolution Reaction
- 1Brazilian Center for Research in Energy and Materials Ilum School of Science Campinas São Paulo Brazil
- 2Brazilian Center for Research in Energy and Materials Brazilian National Nanotechnology Laboratory Campinas São Paulo Brazil
- 3Institute of Chemistry University of Campinas Campinas São Paulo Brazil
Abstract
Two‐dimensional (2D) molybdenum disulfide (MoS2) nanosheets have attracted attention as a promising and cost‐effective alternative catalyst for the hydrogen evolution reaction (HER). However, its aggregation and poor conductivity limit its catalytic activity. Consequently, researchers are exploring ways to improve the conductivity and density of electroactive edges of MoS2 through hybridization with akin advanced 2D materials. Here, reduced graphene oxide (rGO) nanosheets are added to a liquid‐phase‐exfoliated MoS2 dispersion to create drop‐casting hybrid MoS2@rGO electrodes for HER. The findings reveal the formation of 1.1 nm‐thick MoS2 bilayers, with the catalytic performance of MoS2@rGO dependent on the degree of graphene oxide reduction. The rGO moderate reduction prevents the MoS2 bilayers from restacking, improves conductivity, retains oxygenated groups that enhance interlayer spacing, and exposes more electroactive edges. When hybridized with rGO at an optimal reduction time, the resulting system outperforms pristine MoS2 bilayers by attaining the overpotential of ca. 70 mV at 10 mA cm−2 along with a Tafel slope of ca. 46 mV dec−1. This shows that MoS2 bilayers hybridized with rGO offer a promising method for enhancing the electrocatalytic efficiency of MoS2‐based electrodes, expanding opportunities for future strain and defect engineering, and high‐end twist‐angle assemblies for hybrid 2D‐material systems.
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BibTeX
@article{brischi2026molybdenum,
title = {{Molybdenum Disulfide Bilayers Hybridized With Reduced Graphene Oxide Nanosheets for Enhanced Hydrogen Evolution Reaction}},
author = {Bruno Ferreira Brischi and Gabriela Frajtag and João Pedro da Silva Mariano and Laís Fernanda Medeiros Ruela and Gustavo Duarte Verçosa and Camila Desiderio Fernandes and Murilo Santhiago and Letícia Mariê Minatogau Ferro and Leandro Merces},
journal = {Advanced Materials Interfaces},
year = {2026},
month = oct,
doi = {10.1002/admi.70639},
url = {https://doi.org/10.1002/admi.70639},
note = {CC BY},
}
RIS
TY - JOUR
TI - Molybdenum Disulfide Bilayers Hybridized With Reduced Graphene Oxide Nanosheets for Enhanced Hydrogen Evolution Reaction
AU - Bruno Ferreira Brischi
AU - Gabriela Frajtag
AU - João Pedro da Silva Mariano
AU - Laís Fernanda Medeiros Ruela
AU - Gustavo Duarte Verçosa
AU - Camila Desiderio Fernandes
AU - Murilo Santhiago
AU - Letícia Mariê Minatogau Ferro
AU - Leandro Merces
PY - 2026
DA - 2026/10/26
JO - Advanced Materials Interfaces
DO - 10.1002/admi.70639
UR - https://doi.org/10.1002/admi.70639
AB - Two‐dimensional (2D) molybdenum disulfide (MoS2) nanosheets have attracted attention as a promising and cost‐effective alternative catalyst for the hydrogen evolution reaction (HER). However, its aggregation and poor conductivity limit its catalytic activity. Consequently, researchers are exploring ways to improve the conductivity and density of electroactive edges of MoS2 through hybridization with akin advanced 2D materials. Here, reduced graphene oxide (rGO) nanosheets are added to a liquid‐phase‐exfoliated MoS2 dispersion to create drop‐casting hybrid MoS2@rGO electrodes for HER. The findings reveal the formation of 1.1 nm‐thick MoS2 bilayers, with the catalytic performance of MoS2@rGO dependent on the degree of graphene oxide reduction. The rGO moderate reduction prevents the MoS2 bilayers from restacking, improves conductivity, retains oxygenated groups that enhance interlayer spacing, and exposes more electroactive edges. When hybridized with rGO at an optimal reduction time, the resulting system outperforms pristine MoS2 bilayers by attaining the overpotential of ca. 70 mV at 10 mA cm−2 along with a Tafel slope of ca. 46 mV dec−1. This shows that MoS2 bilayers hybridized with rGO offer a promising method for enhancing the electrocatalytic efficiency of MoS2‐based electrodes, expanding opportunities for future strain and defect engineering, and high‐end twist‐angle assemblies for hybrid 2D‐material systems.
SN - 2196-7350
ER -