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Ligand-free gold atom clusters adsorbed on graphene nano sheets generated by oxidative laser fragmentation in water

  Articoli su Riviste JCR/ISI  (anno 2014)

Autori:  Lau M., Haxhiaj I., Wagener P., Intartaglia R., Brandi F., Nakamura J., Barcikowski S

Affiliazione Autori:  Technical Chemistry i and Center for Nanointegration, Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstrasse 7, 45141 Essen, Germany; Nanophysics, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan

Riassunto:  Over three decades after the first synthesis of stabilized Au 55-clusters many scientific questions about gold cluster properties are still unsolved and ligand-free colloidal clusters are difficult to fabricate. Here we present a novel route to produce ultra-small gold particles by using a green technique, the laser ablation and fragmentation in water, without using reductive or stabilizing agents at any step of the synthesis. For fabrication only a pulsed laser, a gold-target, pure water, sodium hydroxide and hydrogen peroxide are deployed. The particles are exemplarily hybridized to graphene supports showing that these carbon-free colloidal clusters might serve as versatile building blocks.

Rivista/Giornale:  CHEMICAL PHYSICS LETTERS
Volume n.:  610-611      Pagine da: 256  a: 260
Ulteriori informazioni:  Deutscher Akademischer Austauschdienst, DAAD. Deutsche Bundesstiftung Umwelt, DBU. Deutscher Akademischer Austauschdienst, DAAD, 56267063. Deutsche Bundesstiftung Umwelt, DBU. FKZ 03X5523. - The German Academic Exchange Service (DAAD) is acknowledged for its financial support within the program ‘Partnerschaften mit der Uni Tsukuba’ ( 56267063 ). IH thanks the German Federal Environmental Foundation (DBU) and PW, the German Federal Ministry of Education and Research (BMBF-NanoMatFutur, FKZ 03X5523 ) for financial support.
DOI: 10.1016/j.cplett.2014.07.047

*Impact Factor della Rivista: (2014) 1.897   *Citazioni: 20
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

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