Kapil, N;
Cardinale, F;
Weissenberger, T;
Trogadas, P;
Nijhuis, TA;
Nigra, MM;
Coppens, M-O;
(2021)
Gold nanoparticles with tailored size through ligand modification for catalytic applications.
Chemical Communications
10.1039/d1cc04165g.
(In press).
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Abstract
The active sites of catalysts can be tuned by using appropriate organic moieties. Here, we describe a facile approach to synthesise gold nanoparticles (AuNPs) using various Au(I) precursors. The core size of these AuNPs can be precisely tailored by varying the steric hindrance imposed by bound ligands. An interesting relationship is deduced that correlates the steric hindrance around the metal to the final size of the nanoparticles. The synthesised AuNPs are immobilised onto TS-1 zeolite (Au/TS-1) with minimal change in the final size of the AuNPs. The catalytic performance of Au/TS-1 catalyst is evaluated for the direct gas phase epoxidation of propylene with hydrogen and oxygen, an environmentally friendly route to produce propylene oxide. The results indicate that smaller AuNPs exhibit enhanced catalytic activity and selectivity. Furthermore, this synthetic approach is beneficial when tailored synthesis of gold nanoparticles of specific sizes is required.
| Type: | Article |
|---|---|
| Title: | Gold nanoparticles with tailored size through ligand modification for catalytic applications |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/d1cc04165g |
| Publisher version: | https://doi.org/10.1039/D1CC04165G |
| Language: | English |
| Additional information: | This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10135862 |
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