DataVXACS NanoPaper
journal article·2016-08-23

Real-Time Dynamics of Galvanic Replacement Reactions of Silver Nanocubes and Au Studied by Liquid-Cell Transmission Electron Microscopy

Shu Fen Tan, Guanhua Lin, Michel Bosman, Utkur Mirsaidov, Christian A. Nijhuis

ACS Nano· Volume 10· Issue 8
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Source abstract

Abstract

We study the galvanic replacement reaction of silver nanocubes in dilute, aqueous ethylenediaminetetraacetic acid disodium salt (EDTA)-capped gold aurate solutions using in situ liquid-cell electron microscopy. Au/Ag etched nanostructures with concave faces are formed via (1) etching that starts from the faces of the nanocubes, followed by (2) the deposition of an Au layer as a result of galvanic replacement, and (3) Au deposition via particle coalescence and monomer attachment where small nanoparticles are formed during the reaction as a result of radiolysis. Analysis of the Ag removal rate and Au deposition rate provides a quantitative picture of the growth process and shows that the morphology and composition of the final product are dependent on the stoichiometric ratio between Au and Ag.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsMaterials processing

OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Electrochemical Analysis and Applications · Molecular Junctions and Nanostructures

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore

Centre for Bioimaging Sciences and Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, 117543, Singapore

Department of Physics, National University of Singapore, 2 Science Drive 3, 117551, Singapore

NUSNNI-NanoCore, National University of Singapore, 5A Engineering Drive 1, 117411, Singapore

Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, 6 Science Drive 2, 117546, Singapore

Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, 138634, Singapore

Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, 117575, Singapore

Funding

Ministry of Education - Singapore · National Research Foundation-Prime Minister's office, Republic of Singapore

References (33)

Show source-provided references
1. 10.1126/science.107722910.1126/science.1077229 ↗
2. 10.1038/nprot.2007.32610.1038/nprot.2007.326 ↗
3. 10.1021/nl051652u10.1021/nl051652u ↗
4. 10.1002/adma.20070250110.1002/adma.200702501 ↗
5. 10.1039/C4SC03854A10.1039/C4SC03854A ↗
6. 10.1021/ja406913410.1021/ja4069134 ↗
7. 10.1002/anie.20160062510.1002/anie.201600625 ↗
8. 10.1021/ja039734c10.1021/ja039734c ↗
9. 10.1126/science.121282210.1126/science.1212822 ↗
10. 10.1126/science.117210410.1126/science.1172104 ↗
11. 10.1073/pnas.120045710910.1073/pnas.1200457109 ↗
12. 10.1039/c3cc47473a10.1039/c3cc47473a ↗
13. 10.1126/science.125314910.1126/science.1253149 ↗
14. 10.1021/acs.nanolett.5b0041410.1021/acs.nanolett.5b00414 ↗
15. 10.1038/ncomms594610.1038/ncomms5946 ↗
16. 10.1021/ja508279v10.1021/ja508279v ↗
17. 10.1016/S0020-1693(03)00054-910.1016/S0020-1693(03)00054-9 ↗
18. 10.1039/C5RA07156A10.1039/C5RA07156A ↗
19. 10.1002/adma.20130282010.1002/adma.201302820 ↗
20. 10.1002/adma.20080025510.1002/adma.200800255 ↗
21. 10.1021/nl202538q10.1021/nl202538q ↗
22. 10.1021/nn303371y10.1021/nn303371y ↗
23. 10.1021/la401584z10.1021/la401584z ↗
24. 10.1073/pnas.080956710610.1073/pnas.0809567106 ↗
25. 10.1039/a805435e10.1039/a805435e ↗
26. 10.1016/S0020-1693(00)85819-310.1016/S0020-1693(00)85819-3 ↗
27. Shemyakina E. V. · Koord. Khim. · 1972 · 1 · 1248
28. 10.1021/jp501884s10.1021/jp501884s ↗
29. 10.1021/ja501676y10.1021/ja501676y ↗
30. 10.1016/j.ultramic.2012.03.01210.1016/j.ultramic.2012.03.012 ↗
31. 10.1021/acs.jpcc.5b0554110.1021/acs.jpcc.5b05541 ↗
32. 10.1021/nl500593j10.1021/nl500593j ↗
33. 10.1016/0304-3991(91)90004-P10.1016/0304-3991(91)90004-P ↗