Ajou University repository

Confined interfacial alloying of multilayered Pd-Ni nanocatalyst for widening hydrogen detection capacityoa mark
  • Lee, Young Ahn ;
  • Duy, Le Thai ;
  • Han, Seungik ;
  • An, Hyesung ;
  • Park, Jucheol ;
  • Singh, Ranveer ;
  • Kim, Hyun You ;
  • Seo, Hyungtak
Citations

SCOPUS

0

Citation Export

Publication Year
2021-03-01
Journal
Sensors and Actuators, B: Chemical
Publisher
Elsevier B.V.
Citation
Sensors and Actuators, B: Chemical, Vol.330
Keyword
Confined alloyingHydrogen sensingMultilayeringNanocatalystPd-Ni
Mesh Keyword
High potencyHydrogen detectionHydrogen-sensingInterfacial alloyingMulti-layeredNano-catalystNano-structuringStructural instability
All Science Classification Codes (ASJC)
Electronic, Optical and Magnetic MaterialsInstrumentationCondensed Matter PhysicsSurfaces, Coatings and FilmsMetals and AlloysElectrical and Electronic EngineeringMaterials Chemistry
Abstract
Nanostructuring of catalysts, such as Pd, is of interest for exploiting their unique surface properties cost-effectively for various applications, especially high-dose hydrogen sensing and storage. Although various Pd modifications have been reported, they have a drawback of structural instability in applications involving high hydrogen doses. Thus, our development of a multilayered Pd-Ni nanocatalyst (PN, three Pd and two Ni layers) is proposed. Here we show the confined self-alloying of Pd and Ni at their interfaces, forming ultrathin 2D-like PdNix layers that facilitate ultrafast hydrogen detection over a wide range (20 ppm to 100 %, workable at 25–100°C) with extraordinary reversibility (> 30,000 cycles, tested at 100°C). That phenomenon of our 11-nm-thick nanocatalyst is justified through experimental measurements and simulation. Thereby, the obtained results revealed the high potency of our PN with the confined self-alloying for high-dose and wide-range hydrogen sensing applications and showed a new way to construct better catalytic nanosystems at low cost.
ISSN
0925-4005
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/31746
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85098654311&origin=inward
DOI
https://doi.org/2-s2.0-85098654311
Journal URL
https://www.journals.elsevier.com/sensors-and-actuators-b-chemical
Type
Article
Funding
This research was supported by the National Research Foundation of Korea ( 2018H1D3A1A02074733 , 2018R1D1A1B07050008 ) funded by the Ministry of Science and ICT . In addition, it was supported by the Korea Energy Technology Evaluation and Planning (Project No: (20203030040030) and Korea Evaluation Institute of Industrial Technology (Project No: (20010394) funded by Ministry of Trade, Industry and Energy, Republic of Korea . This research used resources of the Center for Functional Nanomaterials (a US DOE Office of Science Facility) and the Scientific Data and Computing Center (a component of the Computational Science Initiative) at Brookhaven National Laboratory (Contract No. DE-SC0012704). Computing time was provided by the National Institute of Supercomputing and Network, Korea Institute of Science and Technology Information (KSC-2018-CRE-0078). This work was also supported by Ajou University . Authors thanks Prof. Ji-Yong Park at Ajou University for SPM equipment support.This research was supported by the National Research Foundation of Korea (2018H1D3A1A02074733, 2018R1D1A1B07050008) funded by the Ministry of Science and ICT. In addition, it was supported by the Korea Energy Technology Evaluation and Planning (Project No: (20203030040030) and Korea Evaluation Institute of Industrial Technology (Project No: (20010394) funded by Ministry of Trade, Industry and Energy, Republic of Korea. This research used resources of the Center for Functional Nanomaterials (a US DOE Office of Science Facility) and the Scientific Data and Computing Center (a component of the Computational Science Initiative) at Brookhaven National Laboratory (Contract No. DE-SC0012704). Computing time was provided by the National Institute of Supercomputing and Network, Korea Institute of Science and Technology Information (KSC-2018-CRE-0078). This work was also supported by Ajou University. Authors thanks Prof. Ji-Yong Park at Ajou University for SPM equipment support.Dr. L. T. Duy has worked with Prof. H. Seo’s group at Ajou University after finishing the integrated M.S./Ph.D. program from Sungkyunkwan University in 2017. He was one of the selected candidates for Korea Research Fellowship (KRF) in 2018, funded by National Research Foundation of Korea. Currently, his current research is the development of nanocatalysts and functional materials for wearable sensors and energy devices.
Show full item record

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

SEO, HYUNGTAK Image
SEO, HYUNGTAK서형탁
Department of Materials Science Engineering
Read More

Total Views & Downloads

File Download

  • There are no files associated with this item.