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Title: Pd and Cu-Pd nanoparticles supported on multiwall carbon nanotubes for H{sub 2} detection

Abstract

Highlights: • Pd and CuPd nanoparticles loaded on MWCNT have been used as H{sub 2}-sensors. • Promising H{sub 2} responses have been obtained in different atmospheres. • Electron transfer between nanoparticles and MWCNT is responsible for the detection. - Abstract: Simple, cost-effective, and reproducible devices have been prepared for the detection of H{sub 2} at room temperature. Pd, Cu and bimetallic Cu-Pd nanoparticles (prepared by the reduction-by-solvent method) have been loaded on a MWCNT deposit avoiding the use of surfactants or complicated techniques. The devices based on pure Pd nanoparticles have shown a high H{sub 2} sensitivity in the studied H{sub 2} concentration range with low response and recovery times. However, the addition of Cu in the metallic nanoparticles does not result in a considerable improvement. Furthermore, the Pd and Cu-Pd/MWCNTs-based sensors have kept part of their H{sub 2} sensitivity when they have been tested in an O{sub 2}-depleted atmospheres, which is an altogether new finding compared to Pd-based systems. Through these experiments it has been possible to conclude how the main H{sub 2} detection mechanism is the electron transfer from the nanoparticles (when the PdH{sub x} is formed) to the carbon nanotubes.

Authors:
; ; ;
Publication Date:
OSTI Identifier:
22730382
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 93; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARBON NANOTUBES; DETECTION; ELECTRICAL PROPERTIES; ELECTRON TRANSFER; HYDROGEN; NANOPARTICLES; TEMPERATURE RANGE 0273-0400 K; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Navarro-Botella, Pascual, García-Aguilar, Jaime, Berenguer-Murcia, Ángel, and Cazorla-Amorós, Diego. Pd and Cu-Pd nanoparticles supported on multiwall carbon nanotubes for H{sub 2} detection. United States: N. p., 2017. Web. doi:10.1016/J.MATERRESBULL.2017.04.040.
Navarro-Botella, Pascual, García-Aguilar, Jaime, Berenguer-Murcia, Ángel, & Cazorla-Amorós, Diego. Pd and Cu-Pd nanoparticles supported on multiwall carbon nanotubes for H{sub 2} detection. United States. doi:10.1016/J.MATERRESBULL.2017.04.040.
Navarro-Botella, Pascual, García-Aguilar, Jaime, Berenguer-Murcia, Ángel, and Cazorla-Amorós, Diego. Fri . "Pd and Cu-Pd nanoparticles supported on multiwall carbon nanotubes for H{sub 2} detection". United States. doi:10.1016/J.MATERRESBULL.2017.04.040.
@article{osti_22730382,
title = {Pd and Cu-Pd nanoparticles supported on multiwall carbon nanotubes for H{sub 2} detection},
author = {Navarro-Botella, Pascual and García-Aguilar, Jaime and Berenguer-Murcia, Ángel and Cazorla-Amorós, Diego},
abstractNote = {Highlights: • Pd and CuPd nanoparticles loaded on MWCNT have been used as H{sub 2}-sensors. • Promising H{sub 2} responses have been obtained in different atmospheres. • Electron transfer between nanoparticles and MWCNT is responsible for the detection. - Abstract: Simple, cost-effective, and reproducible devices have been prepared for the detection of H{sub 2} at room temperature. Pd, Cu and bimetallic Cu-Pd nanoparticles (prepared by the reduction-by-solvent method) have been loaded on a MWCNT deposit avoiding the use of surfactants or complicated techniques. The devices based on pure Pd nanoparticles have shown a high H{sub 2} sensitivity in the studied H{sub 2} concentration range with low response and recovery times. However, the addition of Cu in the metallic nanoparticles does not result in a considerable improvement. Furthermore, the Pd and Cu-Pd/MWCNTs-based sensors have kept part of their H{sub 2} sensitivity when they have been tested in an O{sub 2}-depleted atmospheres, which is an altogether new finding compared to Pd-based systems. Through these experiments it has been possible to conclude how the main H{sub 2} detection mechanism is the electron transfer from the nanoparticles (when the PdH{sub x} is formed) to the carbon nanotubes.},
doi = {10.1016/J.MATERRESBULL.2017.04.040},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 93,
place = {United States},
year = {2017},
month = {9}
}