CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Selective shortening of gold nanorods: when surface functionalization dictates the reactivity of nanostructures
Khelfa, A; Meng, J; Byun, C; Wang, GL; Nelayah, J; Ricolleau, C; Amara, H; Guesmi, H; Alloyeau, D
2020
Source PublicationNANOSCALE
ISSN2040-3364
Volume12Issue:44Pages:22658-22667
Subtype期刊论文
AbstractThe selective shortening of gold nanorods (NRs) is a directional etching process that has been intensively studied by UV-Vis spectroscopy because of its direct impact on the optical response of these plasmonic nanostructures. Here, liquid-cell transmission electron microscopy is exploited to visualize this peculiar corrosion process at the nanoscale and study the impacts of reaction kinetics on the etching mechanisms. In situ imaging reveals that anisotropic etching requires a chemical environment with a low etching power to make the tips of NRs the only reaction site for the oxidation process. Then, aberration-corrected TEM and atomistic simulations were combined to demonstrate that the disparity between the reactivity of the body and the ends of NRs does not derive from their crystal structure but results from an inhomogeneous surface functionalization. In a general manner, this work highlights the necessity to consider the organic/inorganic natures of nanostructures to understand their chemical reactivity.
KeywordTOTAL-ENERGY CALCULATIONS IN-SITU NANOPARTICLES BIODEGRADATION METALS GROWTH ADSORPTION NUCLEATION NANOCUBES DYNAMICS
DOI10.1039/d0nr06326f
Indexed BySCI ; EI
Language英语
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Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/33124
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Univ Paris CNRS, Lab Mat & Phenomenes Quant, Paris, France
2.UM CNRS ENSCM, Inst Charles Gerhardt Montpellier, F-34090 Montpellier, France
3.Chinese Acad Sci, Div Interfacial Water, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
4.Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Univ Paris Saclay, Lab Etud Microstruct, ONERA CNRS, UMR 104, BP 72, F-92322 Chatillon, France
Recommended Citation
GB/T 7714
Khelfa, A,Meng, J,Byun, C,et al. Selective shortening of gold nanorods: when surface functionalization dictates the reactivity of nanostructures[J]. NANOSCALE,2020,12(44):22658-22667.
APA Khelfa, A.,Meng, J.,Byun, C.,Wang, GL.,Nelayah, J.,...&Alloyeau, D.(2020).Selective shortening of gold nanorods: when surface functionalization dictates the reactivity of nanostructures.NANOSCALE,12(44),22658-22667.
MLA Khelfa, A,et al."Selective shortening of gold nanorods: when surface functionalization dictates the reactivity of nanostructures".NANOSCALE 12.44(2020):22658-22667.
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