Graphene decorated Pd-Ag nanoparticles for H2 sensing

Bharat Sharma; Jung Sik Kim

doi:10.1016/j.ijhydene.2018.03.026

Graphene decorated Pd-Ag nanoparticles for H₂ sensing

Bharat Sharma, Jung Sik Kim

Department of Materials Science and Engineering

University of Seoul

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

Hydrogen sensor based on graphene nano-composite with Pd-Ag nanoparticles was fabricated by MEMS process. Structural and morphological properties of the sensing film were studied by an energy dispersive spectroscopy (EDS) and field emission scanning electron microscopy (FESEM), respectively. The H₂ sensing properties of as-formed sensor were investigated by measuring the resistance changes at different H₂ concentrations. The maximum gas response was 16.2% at 1000 ppm of H₂ gas. The gas sensitivity of the as-formed H₂ sensor showed linear behavior with the hydrogen concentration. Experimental results showed that the coupling of graphene with Pd/Ag alloy enhanced significantly hydrogen sensing performance.

Original language	English
Pages (from-to)	11397-11402
Number of pages	6
Journal	International Journal of Hydrogen Energy
Volume	43
Issue number	24
DOIs	https://doi.org/10.1016/j.ijhydene.2018.03.026
State	Published - 14 Jun 2018

Keywords

FEM
Gas response
Graphene_Pd/Ag nanocomposite
Hydrogen sensor
Sensitivity

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2018.03.026

Cite this

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title = "Graphene decorated Pd-Ag nanoparticles for H2 sensing",

abstract = "Hydrogen sensor based on graphene nano-composite with Pd-Ag nanoparticles was fabricated by MEMS process. Structural and morphological properties of the sensing film were studied by an energy dispersive spectroscopy (EDS) and field emission scanning electron microscopy (FESEM), respectively. The H2 sensing properties of as-formed sensor were investigated by measuring the resistance changes at different H2 concentrations. The maximum gas response was 16.2% at 1000 ppm of H2 gas. The gas sensitivity of the as-formed H2 sensor showed linear behavior with the hydrogen concentration. Experimental results showed that the coupling of graphene with Pd/Ag alloy enhanced significantly hydrogen sensing performance.",

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AB - Hydrogen sensor based on graphene nano-composite with Pd-Ag nanoparticles was fabricated by MEMS process. Structural and morphological properties of the sensing film were studied by an energy dispersive spectroscopy (EDS) and field emission scanning electron microscopy (FESEM), respectively. The H2 sensing properties of as-formed sensor were investigated by measuring the resistance changes at different H2 concentrations. The maximum gas response was 16.2% at 1000 ppm of H2 gas. The gas sensitivity of the as-formed H2 sensor showed linear behavior with the hydrogen concentration. Experimental results showed that the coupling of graphene with Pd/Ag alloy enhanced significantly hydrogen sensing performance.

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