Facile removal of stabilizer-ligands from supported gold nanoparticles

Lopez-Sanchez, Jose Antonio, Dimitratos, Nikolaos ORCID: https://orcid.org/0000-0002-6620-4335, Hammond, Ceri ORCID: https://orcid.org/0000-0002-9168-7674, Brett, Gemma Louise, Kesavan, Lokesh, White, Saul, Miedziak, Peter John, Tiruvalam, Ramchandra, Jenkins, Robert Leyshon, Carley, Albert Frederick, Knight, David William, Kiely, Christopher John ORCID: https://orcid.org/0000-0001-5412-0970 and Hutchings, Graham John ORCID: https://orcid.org/0000-0001-8885-1560 2011. Facile removal of stabilizer-ligands from supported gold nanoparticles. Nature Chemistry 3 (7) , pp. 551-556. 10.1038/nchem.1066

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Abstract

Metal nanoparticles that comprise a few hundred to several thousand atoms have many applications in areas such as photonics, sensing, medicine and catalysis. Colloidal methods have proven particularly suitable for producing small nanoparticles with controlled morphologies and excellent catalytic properties. Ligands are necessary to stabilize nanoparticles during synthesis, but once the particles have been deposited on a substrate the presence of the ligands is detrimental for catalytic activity. Previous methods for ligand removal have typically involved thermal and oxidative treatments, which can affect the size or morphology of the particles, in turn altering their catalytic activity. Here, we report a procedure to effectively remove the ligands without affecting particle morphology, which enhances the surface exposure of the nanoparticles and their catalytic activity over a range of reactions. This may lead to developments of nanoparticles prepared by colloidal methods for applications in fields such as environmental protection and energy production.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Subjects:	Q Science > QD Chemistry
Uncontrolled Keywords:	Catalysis; Green chemistry
Publisher:	Nature Publishing Group
ISSN:	1755-4330
Last Modified:	06 May 2023 01:26
URI:	https://orca.cardiff.ac.uk/id/eprint/13107

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