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Role of bonding mechanisms during transfer hydrogenation reaction on heterogeneous catalysts of platinum nanoparticles supported on zinc oxide nanorods
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Functional Materials, FNM. Sultan Qaboos University, , Oman.ORCID iD: 0000-0002-0074-3504
2016 (English)In: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, 200-206 p.Article in journal (Refereed) Published
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Abstract [en]

For supported heterogeneous catalysis, the interface between a metal nanoparticle and the support plays an important role. In this work the dependency of the catalytic efficiency on the bonding chemistry of platinum nanoparticles supported on zinc oxide (ZnO) nanorods is studied. Platinum nanoparticles were deposited on ZnO nanorods (ZnO NR) using thermal and photochemical processes and the effects on the size, distribution, density and chemical state of the metal nanoparticles upon the catalytic activities are presented. The obtained results indicate that the bonding at Pt-ZnO interface depends on the deposition scheme which can be utilized to modulate the surface chemistry and thus the activity of the supported catalysts. Additionally, uniform distribution of metal on the catalyst support was observed to be more important than the loading density. It is also found that oxidized platinum Pt(IV) (platinum hydroxide) provided a more suitable surface for enhancing the transfer hydrogenation reaction of cyclohexanone with isopropanol compared to zero valent platinum. Photochemically synthesized ZnO supported nanocatalysts were efficient and potentially viable for upscaling to industrial applications.

Place, publisher, year, edition, pages
Elsevier, 2016. 200-206 p.
National Category
Nano Technology
Identifiers
URN: urn:nbn:se:kth:diva-185137DOI: 10.1016/j.apsusc.2016.03.155ISI: 000376819100026Scopus ID: 2-s2.0-84964033739OAI: oai:DiVA.org:kth-185137DiVA: diva2:918337
Note

QC 20160411

Available from: 2016-04-11 Created: 2016-04-11 Last updated: 2017-01-10Bibliographically approved

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