University of Oulu

Rajesh Rajendiran, Shrutika Lingalwar, Assa Aravindh, Alagusundari Karuppiah, Putrakumar Balla, Prem Kumar Seelam, B. Shanmugavelu, Vijayanand Perupogu, Sungtak Kim, Ulla Lassi, The role of AgNPs in selective oxidation of benzyl alcohol in vapor phase using morphologically tailored MnO2 nanorods in the presence of air, Chemical Engineering Journal, Volume 469, 2023, 144007, ISSN 1385-8947,

The role of AgNPs in selective oxidation of benzyl alcohol in vapor phase using morphologically tailored MnO₂ nanorods in the presence of air

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Author: Rajendiran, Rajesh1; Lingalwar, Shrutika1; Aravindh, Assa2;
Organizations: 1Energy & Environmental Engineering Department, CSIR-Indian Institute of Chemical Technology (IICT), Hyderabad 500007, India
2Nano and Molecular Systems (NANOMO) Research Unit, Faculty of Science, P.O. Box 4300, University of Oulu, Oulu 90014, Finland
3Department of Chemistry, Pondicherry Central University, Kalapet, Pondicherry 605014, India
4Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea
5Sustainable Chemistry Research Unit, Faculty of Technology, P.O. Box 4300, University of Oulu, Oulu 90014, Finland
6Department of Science (Physics), Sona College of Technology, Salem 636005, Tamil Nadu, India
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 4.9 MB)
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Language: English
Published: Elsevier, 2023
Publish Date: 2023-06-13


Vapor phase benzyl alcohol (BnOH) oxidation reaction is investigated over a pre–synthesised morphologically designed shape controlled spherical silver nanoparticles (AgNPs) decorated on manganese oxide nanorods (α–MnO₂NRs) in the presence of air. The combination of silver nanoparticles and the α–MnO₂NRs interface enabled the increased oxygen vacancies (Ov) and exhibited the strong metal–support interactions (SMSI) in surface oxygen activation. The effect of Ag loadings is significant and the optimal 1 wt% Ag loaded catalyst (1Ag/MnO₂NRs) showed excellent performance in benzyl alcohol oxidation due to high adsorption capacity, enhanced oxygen vacancies and red–ox properties. The DFT calculations confirmed that the high BnOH surface adsorption was exhibited over Ag modified MnO₂NRs than the bare α–MnO₂NRs. The optimized 1Ag/α–MnO₂NRs catalytic system achieved 2.6 fold higher activity compared to bare α–MnO₂NRs. These results provided novel insights on the rational design of shape dependent metal/metal oxide based heterogeneous catalysts.

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Series: Chemical engineering journal
ISSN: 1385-8947
ISSN-E: 1873-3212
ISSN-L: 1385-8947
Volume: 469
Article number: 144007
DOI: 10.1016/j.cej.2023.144007
Type of Publication: A1 Journal article – refereed
Field of Science: 215 Chemical engineering
116 Chemical sciences
Funding: Dr. Prem Kumar Seelam acknowledges the Hycat3 project and Hycamite Oy, Finland. P. Vijayanand greatly acknowledges to TSP–0202 project for funding in CSIR-Indian Institute of Chemical Technolgies, Hyderabad, India. This research was supported by Chungnam National University (2021–2022) for DRIFT analysis.
Copyright information: © 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (