Graphene nanosheets decorated with heterostructured ruthenium sulfide as catalyst for enhanced hydrogen evolution reaction

In present findings, a simple pyrolysis technique was applied to decorate S and N doped graphene with RuS2-CoO nanoparticles synthesizing a heterostructured nanocomposite RuS2-CoO@SNG. XPS results demonstrate the elemental composition of these nanomaterials with the hint of metal-metal charge transf...

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Bibliographic Details
Published in:PloS one 2024-12, Vol.19 (12), p.e0311885
Main Authors: Naseeb, Warisha, Khosa, Muhammad Kaleem, Noor, Awal, Qayyum, Sadaf, Chen, Shaowei
Format: Article
Language:English
Subjects:
Analysis
Carbon
Catalysis
Catalysts
Charge transfer
Chemical composition
Chemical synthesis
Composition
Current density
Electrodes
Electrolytes
Electrons
Energy consumption
Engineering and Technology
Evolution
Fossil fuels
Graphene
Graphite - chemistry
Greenhouse gases
Heterostructures
Hydrogen
Hydrogen - chemistry
Hydrogen evolution reactions
Hydrogenation
Methods
Nanocomposites
Nanocomposites - chemistry
Nanomaterials
Nanoparticles
Nanostructures - chemistry
Nanotechnology
Physical Sciences
Properties
Pyrolysis
Quantum dots
Research and Analysis Methods
Ruthenium
Ruthenium - chemistry
Spectrum analysis
Stability tests
Sulfides - chemistry
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Summary:In present findings, a simple pyrolysis technique was applied to decorate S and N doped graphene with RuS2-CoO nanoparticles synthesizing a heterostructured nanocomposite RuS2-CoO@SNG. XPS results demonstrate the elemental composition of these nanomaterials with the hint of metal-metal charge transfer phenomenon likely due to heterostructure composition. These modifications led to a significant active surface area resulting in elevated electrocatalytic performance. In comparison to benchmark Pt/C at -60 mV in 1 M KOH, hydrogen evolution reaction (HER) reached at current density around 10 mA cm-2 at -90 mV overpotential. The stability test displayed excellent results with a decrease of 2 mV in overpotential at current density of 10 mA cm-2. Results indicate that such heterostructured nanocomposites can be used as an effective catalyst for HER.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0311885