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Tran Si Bui Trung
나노물질 및 화학반응 연구단
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Defective Nb2O5-supported Pt catalysts for CO oxidation: Promoting catalytic activity via oxygen vacancy engineering

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Title
Defective Nb2O5-supported Pt catalysts for CO oxidation: Promoting catalytic activity via oxygen vacancy engineering
Author(s)
Si Bui Trung Tran; Hanseul Choi; Sunyoung Oh; Jeong Young Park
Publication Date
2019-07
Journal
JOURNAL OF CATALYSIS, v.375, no., pp.124 - 134
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Abstract
© 2019 Elsevier Inc.We introduced oxygen vacancies into Nb2O5 via thermal treatment at 700 °C under oxygen-deficient conditions for different lengths of time. Niobia-supported Pt catalysts were subsequently synthesized using the wet impregnation method with the fabricated Nb2O5. The catalytic activity of the synthesized catalysts for CO oxidation exhibited a significant increase from that obtained for a counterpart having the Nb2O5 support treated under saturated oxygen conditions (i.e., in air). Moreover, increasing the number of oxygen vacancies was found to increase the catalytic activity. At 150 °C, the TOF calculated for the catalyst with the most oxygen vacancies was 0.36 s−1, which was much higher than that obtained from the catalyst possessing the fewest oxygen vacancies (0.05 s−1). Systematic characterization of the synthesized catalysts revealed the crucial impact of oxygen vacancies and active lattice oxygen on the enhancement of catalytic activity
URI
https://pr.ibs.re.kr/handle/8788114/6144
ISSN
0021-9517
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
Journal of Catalysis 375 (2019) 124–134.pdfDownload

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