TY - JOUR

T1 - Application of DLS for metal nanoparticle size determination in supported catalysts

AU - Larichev, Yu V.

N1 - Funding Information: This work was supported by Ministry of Science and Higher Education of the Russian Federation (project AAAA-A17-117041710079-8). Publisher Copyright: © 2021, Institute of Chemistry, Slovak Academy of Sciences. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/5

Y1 - 2021/5

N2 - A new technique STS (from solids to sols) for study of supported metal catalysts by Dynamic Light Scattering (DLS) has been proposed. This technique has been tested on a set of supported gold catalysts with wide range of metal particle sizes. We have prepared a set of Au/Al2O3 catalysts and previously studied them by TEM and XRD. Then using STS technique Au-containing sols were prepared from these catalysts. These Au-containing sols were subsequently studied by UV–Vis spectroscopy and DLS. We found that sizes of gold nanoparticles in initial solid catalysts and in sols prepared from them have similar sizes. Thereby, the possibility of determination of particle sizes in supported metal catalysts using more simple, sensitive and quick methods was demonstrated in this work.

AB - A new technique STS (from solids to sols) for study of supported metal catalysts by Dynamic Light Scattering (DLS) has been proposed. This technique has been tested on a set of supported gold catalysts with wide range of metal particle sizes. We have prepared a set of Au/Al2O3 catalysts and previously studied them by TEM and XRD. Then using STS technique Au-containing sols were prepared from these catalysts. These Au-containing sols were subsequently studied by UV–Vis spectroscopy and DLS. We found that sizes of gold nanoparticles in initial solid catalysts and in sols prepared from them have similar sizes. Thereby, the possibility of determination of particle sizes in supported metal catalysts using more simple, sensitive and quick methods was demonstrated in this work.

KW - DLS

KW - Selective dissolution

KW - Sols

KW - Supported metal catalysts

KW - OXIDATION

KW - HYDROGENATION

KW - PARTICLE-SIZE

UR - http://www.scopus.com/inward/record.url?scp=85098971348&partnerID=8YFLogxK

U2 - 10.1007/s11696-020-01454-1

DO - 10.1007/s11696-020-01454-1

M3 - Article

AN - SCOPUS:85098971348

VL - 75

SP - 2059

EP - 2066

JO - Chemical Papers

JF - Chemical Papers

SN - 0366-6352

IS - 5

ER -