Support Effect of Arc Plasma Deposited Pt Nanoparticles/TiO2 Substrate on Catalytic Activity of CO Oxidation

Cited 57 time in webofscience Cited 0 time in scopus
  • Hit : 415
  • Download : 0
The smart design of nanocatalysts can improve the catalytic activity of transition metals on reducible oxide supports, such as titania, via strong metal support interactions. In this work, we investigated two-dimensional Pt nanoparticle/titania catalytic systems under the CO oxidation reaction. Arc plasma deposition (APD) and metal impregnation techniques were employed to achieve Pt nanoparticle deposition on titania supports, which were prepared by multitarget sputtering and sol-gel techniques. APD Pt nanoparticles with an average size of 2.7 nm were deposited on sputtered and sol gel-prepared titania films to assess the role of the titania support on the catalytic activity of Pt under CO oxidation. In order to study the nature of the dispersed metallic phase and its effect on the activity of the catalytic CO oxidation reaction, Pt nanoparticles were deposited in varying surface coverages on sputtered titania films using arc plasma deposition. Our results show an enhanced activity of Pt nanoparticles when the nanoparticle/titania interfaces are exposed. APD Pt shows superior catalytic activity under CO oxidation, as compared to impregnated Pt nanoparticles, due to the catalytically active nature of the mild surface oxidation and the active Pt metal, suggesting that APD can be used for large-scale synthesis of active metal nanocatalysts.
Publisher
AMER CHEMICAL SOC
Issue Date
2012-11
Language
English
Article Type
Article
Keywords

HOT-ELECTRON FLOW; CARBON-MONOXIDE; NOBLE-METALS; VACUUM-ARC; PLATINUM; PRETREATMENT; SELECTIVITY; NANODIODES; REDUCTION; HYDROGEN

Citation

JOURNAL OF PHYSICAL CHEMISTRY C, v.116, no.45, pp.24054 - 24059

ISSN
1932-7447
DOI
10.1021/jp306461v
URI
http://hdl.handle.net/10203/102811
Appears in Collection
EEW-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 57 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0