Surface Composition and Crystallinity of Coalescing Silver–Gold Nanoparticles

ACS Nano ◽  
2017 ◽  
Vol 11 (11) ◽  
pp. 11653-11660 ◽  
Author(s):  
Eirini Goudeli ◽  
Sotiris E. Pratsinis
Keyword(s):  
Gold Nanoparticles ◽  
Surface Composition

scholarly journals Effect of Particle Diameter and Surface Composition on the Spontaneous Fusion of Monolayer-Protected Gold Nanoparticles with Lipid Bilayers

Nano Letters ◽  
2013 ◽  
Vol 13 (9) ◽  
pp. 4060-4067 ◽  
Author(s):  
Reid C. Van Lehn ◽  
Prabhani U. Atukorale ◽  
Randy P. Carney ◽  
Yu-Sang Yang ◽  
Francesco Stellacci ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Lipid Bilayers ◽  
Surface Composition ◽  
Particle Diameter

Deciphering the Surface Composition and the Internal Structure of Alloyed Silver-Gold Nanoparticles

2018 ◽  
Vol 24 (36) ◽  
pp. 9051-9060 ◽  
Author(s):  
Viktoria Grasmik ◽  
Christian Rurainsky ◽  
Kateryna Loza ◽  
Mathies V. Evers ◽  
Oleg Prymak ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Internal Structure ◽  
Surface Composition

A Thermogravimetric Study of Alakanethiolate Monolayer-Capped Gold Nanoparticle Catalysts

2003 ◽  
Vol 789 ◽  
Author(s):  
Mathew M. Maye ◽  
Sandy Chen ◽  
Wai-Ben Chan ◽  
Lingyan Wang ◽  
Peter Njoki ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Composition ◽  
Model System ◽  
Core Shell ◽  
Oxidation Of Co ◽  
Nanoparticle Catalysts ◽  
The Core ◽  
Catalytic Application ◽  
Treatment Conditions ◽  
Shell Composition

ABSTRACTThe application of molecularly-capped gold nanoparticles (1–5 nm) in catalysis (e.g., electrocatalytic oxidation of CO and methanol) requires a thorough understanding of the surface composition and structural properties. Gold nanoparticles consisting of metallic or alloy cores and organic encapsulating shells serve as an intriguing model system. One of the challenges for the catalytic application is the ability to manipulate the core and the shell properties in controllable ways. There is a need to understand the relative core-shell composition and the ability to remove the shell component under thermal treatment conditions. In this paper, we report results of a thermogravimetric analysis of the alkanethiolate monolayer-capped gold nanoparticles. This investigation is aimed at enhancing our understanding of the relative core-shell composition and thermal profiles.

Tripodal tris-disulfides as capping agents for a controlled mixed functionalization of gold nanoparticles

2018 ◽  
Vol 42 (20) ◽  
pp. 16436-16440
Author(s):  
Giovanna De Luca ◽  
Paola Bonaccorsi ◽  
Valentina Trovato ◽  
Aurora Mancuso ◽  
Teresa Papalia ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Composition ◽  
Capping Agents ◽  
Fine Control ◽  
Capping Ligands ◽  
Aunp Surface

New tris(SS)-tripodal capping ligands afford AuNP surface composition fine control and SPR sensing for TNT-like explosives.

scholarly journals Cover Feature: Deciphering the Surface Composition and the Internal Structure of Alloyed Silver-Gold Nanoparticles (Chem. Eur. J. 36/2018)

2018 ◽  
Vol 24 (36) ◽  
pp. 8920-8920
Author(s):  
Viktoria Grasmik ◽  
Christian Rurainsky ◽  
Kateryna Loza ◽  
Mathies V. Evers ◽  
Oleg Prymak ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Internal Structure ◽  
Surface Composition

scholarly journals Ionic Liquid Surface Composition Controls the Size of Gold Nanoparticles Prepared by Sputtering Deposition

2010 ◽  
Vol 114 (27) ◽  
pp. 11764-11768 ◽  
Author(s):  
Heberton Wender ◽  
Luciane F. de Oliveira ◽  
Pedro Migowski ◽  
Adriano F. Feil ◽  
Elizeo Lissner ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Ionic Liquid ◽  
Liquid Surface ◽  
Surface Composition ◽  
Sputtering Deposition

Preferential Sputtering of Ni3Al Single Crystals Studied Using Atom-Probe Field-Ion Microscopy and XPS

1981 ◽  
Vol 39 ◽  
pp. 16-17
Author(s):  
M.P. Thomas ◽  
A.R. Waugh ◽  
M.J. Southon ◽  
Brian Ralph
Keyword(s):  
Single Crystals ◽  
Photoelectron Spectroscopy ◽  
Surface Composition ◽  
Depth Profiling ◽  
Analytical Techniques ◽  
Atom Probe ◽  
Probe Field ◽  
Preferential Sputtering ◽  
Argon Ion Bombardment ◽  
Argon Ion

It is well known that ion-induced sputtering from numerous multicomponent targets results in marked changes in surface composition (1). Preferential removal of one component results in surface enrichment in the less easily removed species. In this investigation, a time-of-flight atom-probe field-ion microscope A.P. together with X-ray photoelectron spectroscopy XPS have been used to monitor alterations in surface composition of Ni3Al single crystals under argon ion bombardment. The A.P. has been chosen for this investigation because of its ability using field evaporation to depth profile through a sputtered surface without the need for further ion sputtering. Incident ion energy and ion dose have been selected to reflect conditions widely used in surface analytical techniques for cleaning and depth-profiling of samples, typically 3keV and 1018 - 1020 ion m-2.

What catalysis needs from the electron microscopist

1988 ◽  
Vol 46 ◽  
pp. 694-695
Author(s):  
Alexis T. Bell
Keyword(s):  
Active Sites ◽  
Heterogeneous Catalysts ◽  
Catalyst Deactivation ◽  
Surface Composition ◽  
Internal Surface ◽  
Active Phase ◽  
Atomic Scale ◽  
Metal Catalyst ◽  
Internal Surface Area ◽  
Porous Support

Heterogeneous catalysts, used in industry for the production of fuels and chemicals, are microporous solids characterized by a high internal surface area. The catalyticly active sites may occur at the surface of the bulk solid or of small crystallites deposited on a porous support. An example of the former case would be a zeolite, and of the latter, a supported metal catalyst. Since the activity and selectivity of a catalyst are known to be a function of surface composition and structure, it is highly desirable to characterize catalyst surfaces with atomic scale resolution. Where the active phase is dispersed on a support, it is also important to know the dispersion of the deposited phase, as well as its structural and compositional uniformity, the latter characteristics being particularly important in the case of multicomponent catalysts. Knowledge of the pore size and shape is also important, since these can influence the transport of reactants and products through a catalyst and the dynamics of catalyst deactivation.

EpCam-specific Gold Nanoparticles for Detection, Live-imaging and Rapid Enrichment of Adult Human Liver Progenitor Cells

2013 ◽  
Vol 51 (01) ◽  
Author(s):  
N Fekete-Drimusz ◽  
J de la Roche ◽  
F Vondran ◽  
CL Sajti ◽  
MP Manns ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Progenitor Cells ◽  
Human Liver ◽  
Live Imaging ◽  
Adult Human
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