Nanoplasmonic sensing to study CO and oxygen adsorption and CO oxidation on size-selected Pt₁₀ clusters

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F24%3A00600611" target="_blank" >RIV/61388955:_____/24:00600611 - isvavai.cz</a>

Result on the web

<a href="https://hdl.handle.net/11104/0357920" target="_blank" >https://hdl.handle.net/11104/0357920</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4nr02682a" target="_blank" >10.1039/d4nr02682a</a>

Result language

angličtina

Original language name

Nanoplasmonic sensing to study CO and oxygen adsorption and CO oxidation on size-selected Pt₁₀ clusters

Original language description

The adsorption of CO and oxygen and CO oxidation on size-selected Pt-10 clusters were studied by indirect nanoplasmonic sensing (INPS) in the pressure range of 1-100 Pa at T = 418 K. CO adsorption was reversible, inducing a blue-shift in the localised surface plasmon resonance (LSPR) response, regardless of the initial CO pressure. We observe a plateau at approximately Delta lambda =0.1 nm at P-CO > 2.7 Pa, indicating saturation of CO adsorption on Pt-10 clusters. Oxygen induces both chemisorption and oxidation of Pt-10 clusters until a regime is reached where Delta lambda(max) remains positive and constant, showing that the Pt-10 clusters are completely oxidised. CO oxidation at different molar fractions is also followed by INPS. All results are discussed in relation to our previous works on 3 nm Pt nanocubes [B. Demirdjian, I. Ozerov, F. Bedu, A. Ranguis and C. R. Henry, ACS Omega, 2021, <bold>6</bold>, 13398-13405]. The study demonstrates the suitability of INPS towards the understanding of the nature and function of matter in the largely unexplored subnanometer size regime where properties can often dramatically change when altering the particle size by a single atom.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

<a href="/en/project/EH22_008%2F0004558" target="_blank" >EH22_008/0004558: Advanced MUltiscaLe materials for key Enabling Technologies</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nanoscale

ISSN

2040-3364

e-ISSN

2040-3372

Volume of the periodical

16

Issue of the periodical within the volume

45

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

20968-20976

UT code for WoS article

001341288200001

EID of the result in the Scopus database

2-s2.0-85207719028