Abstract
Ultrasmall (≤3 nm) bimetallic nanoparticles with controllable compositions and structure are of great interest for their catalytic activity, especially carbon dioxide reduction. Herein is reported a synthesis for bimetallic AuxCu1-x nanoparticles of tunable composition that takes advantage of complex-ion chemistry. These AuxCu1-x nanoparticles exhibit ultrasmall sizes (∼2 nm), and the observed metal compositions are similar to the nominal metal ratios in the synthesis, roughly 3:1, 1:1, and 1:3 for Au:Cu. The nanoparticles appear to be disordered alloys; no evidence for intermetallic compositions was obtained. Oxidation state analysis of Cu was carried using XPS; after 1 day, only minor oxidation of copper was observed. The original capping agent for the nanoparticles, dodecanethiol, is complexed with sodium dodecyl sulfate to transfer the particles to the aqueous phase.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3989-3998 |
| Number of pages | 10 |
| Journal | ACS Applied Nano Materials |
| Volume | 2 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 28 2019 |
Fingerprint
Keywords
- CO reduction
- bimetallic nanoparticles
- gold-copper
- tunable composition
- two-phase synthesis
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Two-Phase Synthesis of Gold-Copper Bimetallic Nanoparticles of Tunable Composition : Toward Optimized Catalytic CO2 Reduction. / Hofmann, Daniel M.; Fairbrother, D. Howard; Hamers, Robert J.; Murphy, Catherine Jones.
In: ACS Applied Nano Materials, Vol. 2, No. 6, 28.06.2019, p. 3989-3998.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Two-Phase Synthesis of Gold-Copper Bimetallic Nanoparticles of Tunable Composition
T2 - Toward Optimized Catalytic CO2 Reduction
AU - Hofmann, Daniel M.
AU - Fairbrother, D. Howard
AU - Hamers, Robert J.
AU - Murphy, Catherine Jones
PY - 2019/6/28
Y1 - 2019/6/28
N2 - Ultrasmall (≤3 nm) bimetallic nanoparticles with controllable compositions and structure are of great interest for their catalytic activity, especially carbon dioxide reduction. Herein is reported a synthesis for bimetallic AuxCu1-x nanoparticles of tunable composition that takes advantage of complex-ion chemistry. These AuxCu1-x nanoparticles exhibit ultrasmall sizes (∼2 nm), and the observed metal compositions are similar to the nominal metal ratios in the synthesis, roughly 3:1, 1:1, and 1:3 for Au:Cu. The nanoparticles appear to be disordered alloys; no evidence for intermetallic compositions was obtained. Oxidation state analysis of Cu was carried using XPS; after 1 day, only minor oxidation of copper was observed. The original capping agent for the nanoparticles, dodecanethiol, is complexed with sodium dodecyl sulfate to transfer the particles to the aqueous phase.
AB - Ultrasmall (≤3 nm) bimetallic nanoparticles with controllable compositions and structure are of great interest for their catalytic activity, especially carbon dioxide reduction. Herein is reported a synthesis for bimetallic AuxCu1-x nanoparticles of tunable composition that takes advantage of complex-ion chemistry. These AuxCu1-x nanoparticles exhibit ultrasmall sizes (∼2 nm), and the observed metal compositions are similar to the nominal metal ratios in the synthesis, roughly 3:1, 1:1, and 1:3 for Au:Cu. The nanoparticles appear to be disordered alloys; no evidence for intermetallic compositions was obtained. Oxidation state analysis of Cu was carried using XPS; after 1 day, only minor oxidation of copper was observed. The original capping agent for the nanoparticles, dodecanethiol, is complexed with sodium dodecyl sulfate to transfer the particles to the aqueous phase.
KW - CO reduction
KW - bimetallic nanoparticles
KW - gold-copper
KW - tunable composition
KW - two-phase synthesis
UR - http://www.scopus.com/inward/record.url?scp=85068594068&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85068594068&partnerID=8YFLogxK
U2 - 10.1021/acsanm.9b00904
DO - 10.1021/acsanm.9b00904
M3 - Article
AN - SCOPUS:85068594068
VL - 2
SP - 3989
EP - 3998
JO - ACS Applied Nano Materials
JF - ACS Applied Nano Materials
SN - 2574-0970
IS - 6
ER -