Understanding the Microscopic Origin of Gold Nanoparticle Anisotropic Growth from Molecular Dynamics Simulations
- Publication type:
- Journal article
- Metadata:
-
- Autoren
- Santosh Kumar Meena
- Marialore Sulpizi
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000327999600026&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1021/la403843n
- Externe Identifier
- Clarivate Analytics Document Solution ID: 266CJ
- PubMed Identifier: 24224887
- ISSN
- 0743-7463
- Ausgabe der Veröffentlichung
- 48
- Zeitschrift
- LANGMUIR
- Paginierung
- 14954 - 14961
- Datum der Veröffentlichung
- 2013
- Status
- Published
- Titel
- Understanding the Microscopic Origin of Gold Nanoparticle Anisotropic Growth from Molecular Dynamics Simulations
- Sub types
- Article
- Ausgabe der Zeitschrift
- 29
Data source: Web of Science (Lite)
- Other metadata sources:
-
- Autoren
- Santosh Kumar Meena
- Marialore Sulpizi
- DOI
- 10.1021/la403843n
- eISSN
- 1520-5827
- ISSN
- 0743-7463
- Ausgabe der Veröffentlichung
- 48
- Zeitschrift
- Langmuir
- Sprache
- en
- Online publication date
- 2013
- Paginierung
- 14954 - 14961
- Datum der Veröffentlichung
- 2013
- Status
- Published
- Herausgeber
- American Chemical Society (ACS)
- Herausgeber URL
- http://dx.doi.org/10.1021/la403843n
- Datum der Datenerfassung
- 2024
- Titel
- Understanding the Microscopic Origin of Gold Nanoparticle Anisotropic Growth from Molecular Dynamics Simulations
- Ausgabe der Zeitschrift
- 29
Data source: Crossref
- Abstract
- We use molecular dynamics simulations in order to understand the microscopic origin of the asymmetric growth mechanism in gold nanorods. We provide the first atomistic model of different surfaces on gold nanoparticles in a growing electrolyte solution, and we describe the interaction of the metal with the surfactants, namely, cetyltrimethylammonium bromide (CTAB) and the ions. An innovative aspect is the inclusion of the role of the surfactants, which are explicitly modeled. We find that on all the investigated surfaces, namely, (111), (110), and (100), CTAB forms a layer of distorted cylindrical micelles where channels among micelles provide direct ion access to the surface. In particular, we show how AuCl2(-) ions, which are found in the growth solution, can freely diffuse from the bulk solution to the gold surface. We also find that the (111) surface exhibits a higher CTAB packing density and a higher electrostatic potential. Both elements would favor the growth of gold nanoparticles along the (111) direction. These findings are in agreement with the growth mechanisms proposed by the experimental groups of Murphy and Mulvaney.
- Addresses
- Institute of Physics, Johannes Gutenberg University Mainz , Staudingerweg 7, 55099, Mainz, Germany.
- Autoren
- Santosh Kumar Meena
- Marialore Sulpizi
- DOI
- 10.1021/la403843n
- eISSN
- 1520-5827
- Externe Identifier
- PubMed Identifier: 24224887
- Open access
- false
- ISSN
- 0743-7463
- Ausgabe der Veröffentlichung
- 48
- Zeitschrift
- Langmuir : the ACS journal of surfaces and colloids
- Sprache
- eng
- Medium
- Print-Electronic
- Online publication date
- 2013
- Paginierung
- 14954 - 14961
- Datum der Veröffentlichung
- 2013
- Status
- Published
- Datum der Datenerfassung
- 2013
- Titel
- Understanding the microscopic origin of gold nanoparticle anisotropic growth from molecular dynamics simulations.
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 29
Data source: Europe PubMed Central
- Abstract
- We use molecular dynamics simulations in order to understand the microscopic origin of the asymmetric growth mechanism in gold nanorods. We provide the first atomistic model of different surfaces on gold nanoparticles in a growing electrolyte solution, and we describe the interaction of the metal with the surfactants, namely, cetyltrimethylammonium bromide (CTAB) and the ions. An innovative aspect is the inclusion of the role of the surfactants, which are explicitly modeled. We find that on all the investigated surfaces, namely, (111), (110), and (100), CTAB forms a layer of distorted cylindrical micelles where channels among micelles provide direct ion access to the surface. In particular, we show how AuCl2(-) ions, which are found in the growth solution, can freely diffuse from the bulk solution to the gold surface. We also find that the (111) surface exhibits a higher CTAB packing density and a higher electrostatic potential. Both elements would favor the growth of gold nanoparticles along the (111) direction. These findings are in agreement with the growth mechanisms proposed by the experimental groups of Murphy and Mulvaney.
- Autoren
- Santosh Kumar Meena
- Marialore Sulpizi
- Autoren-URL
- https://www.ncbi.nlm.nih.gov/pubmed/24224887
- DOI
- 10.1021/la403843n
- eISSN
- 1520-5827
- Ausgabe der Veröffentlichung
- 48
- Zeitschrift
- Langmuir
- Sprache
- eng
- Country
- United States
- Paginierung
- 14954 - 14961
- Datum der Veröffentlichung
- 2013
- Status
- Published
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2014
- Titel
- Understanding the microscopic origin of gold nanoparticle anisotropic growth from molecular dynamics simulations.
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 29
Data source: PubMed
- Beziehungen:
-