Details
| Original language | English |
|---|---|
| Pages (from-to) | 909-914 |
| Number of pages | 6 |
| Journal | New Journal of Chemistry |
| Volume | 39 |
| Issue number | 2 |
| Early online date | 11 Nov 2014 |
| Publication status | Published - 1 Feb 2015 |
Abstract
The room temperature spontaneous reduction of HAuCl4 in ethylene glycol in the presence of pre-formed ZnO nanoparticles is investigated by UV-vis spectroscopy. Analysis by HRTEM demonstrated that the synthesized nanostructures consist of small ZnO nanoparticles (5.0 nm) in contact with bigger (15 nm) spherical Au nanoparticles. The electronic communication between Au and ZnO blocks is confirmed by UV excitation of the colloid. These experiments indicate that ZnO nanoparticles efficiently transfer the electrons to Au nanoparticles in contact, inducing a 15 nm blue shift in the plasmon band. Titration experiments using the methylviologen couple (MV2+/MV+) are presented and analyzed to quantify the enhancement in the electron storage capability in the new nanostructure and the negative shift in the Fermi level caused by the Au loading in ZnO.
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
- General Chemistry
- Materials Science(all)
- Materials Chemistry
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In: New Journal of Chemistry, Vol. 39, No. 2, 01.02.2015, p. 909-914.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The spontaneous room temperature reduction of HAuCl4 in ethylene glycol in the presence of ZnO
T2 - A simple strategy to obtain stable Au/ZnO nanostructures exhibiting strong surface plasmon resonance and efficient electron storage properties
AU - Aguirre, Matías E.
AU - Perelstein, Gonzalo
AU - Feldhoff, Armin
AU - Condó, Adriana
AU - Tolley, Alfredo J.
AU - Grela, María A.
N1 - Publisher Copyright: © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2015.
PY - 2015/2/1
Y1 - 2015/2/1
N2 - The room temperature spontaneous reduction of HAuCl4 in ethylene glycol in the presence of pre-formed ZnO nanoparticles is investigated by UV-vis spectroscopy. Analysis by HRTEM demonstrated that the synthesized nanostructures consist of small ZnO nanoparticles (5.0 nm) in contact with bigger (15 nm) spherical Au nanoparticles. The electronic communication between Au and ZnO blocks is confirmed by UV excitation of the colloid. These experiments indicate that ZnO nanoparticles efficiently transfer the electrons to Au nanoparticles in contact, inducing a 15 nm blue shift in the plasmon band. Titration experiments using the methylviologen couple (MV2+/MV+) are presented and analyzed to quantify the enhancement in the electron storage capability in the new nanostructure and the negative shift in the Fermi level caused by the Au loading in ZnO.
AB - The room temperature spontaneous reduction of HAuCl4 in ethylene glycol in the presence of pre-formed ZnO nanoparticles is investigated by UV-vis spectroscopy. Analysis by HRTEM demonstrated that the synthesized nanostructures consist of small ZnO nanoparticles (5.0 nm) in contact with bigger (15 nm) spherical Au nanoparticles. The electronic communication between Au and ZnO blocks is confirmed by UV excitation of the colloid. These experiments indicate that ZnO nanoparticles efficiently transfer the electrons to Au nanoparticles in contact, inducing a 15 nm blue shift in the plasmon band. Titration experiments using the methylviologen couple (MV2+/MV+) are presented and analyzed to quantify the enhancement in the electron storage capability in the new nanostructure and the negative shift in the Fermi level caused by the Au loading in ZnO.
UR - http://www.scopus.com/inward/record.url?scp=84922440358&partnerID=8YFLogxK
U2 - 10.1039/c4nj01663g
DO - 10.1039/c4nj01663g
M3 - Article
AN - SCOPUS:84922440358
VL - 39
SP - 909
EP - 914
JO - New Journal of Chemistry
JF - New Journal of Chemistry
SN - 1144-0546
IS - 2
ER -