Experimental study on the coalescence process of SiO 2 supported colloidal Au nanoparticles

We show that active surface growth is an effective method to create structural variety in the appending domain of Au seeds. The dynamic competition between the growth sites led to different Au hats on seeds.

Download Full-text

Molecular dynamics simulations of the alloying process of Cu/Au nanoparticles with different sizes

Modern Physics Letters B ◽

10.1142/s0217984921500056 ◽

2020 ◽

pp. 2150005

Author(s):

Shouqi Cao ◽

Haochen Zuo ◽

He Xin ◽

Lixin Zhou

Keyword(s):

Molecular Dynamics ◽

Molecular Dynamics Simulations ◽

Melting Temperature ◽

Industrial Production ◽

Au Nanoparticles ◽

Coalescence Process ◽

Three Stages ◽

Dynamics Simulations ◽

Outer Area ◽

Sintering Neck

The coalescence of particles extensively exists in the industrial production and nature, which is of great research significance. This paper examined the alloying process of Cu/Au nanoparticles with different sizes by molecular dynamics (MDs) simulations. The coalescence process presents three stages which can be divided by the contact and fusion. The alloying processes of Cu/Au nanoparticles with different sizes had contacted with each other before the heating at 300 K. The Au atoms diffused through the outer area of the sintering neck before the nanoparticles were fused into one particle. The coalescence had become severe after the systems reached the melting temperature. The different systems showed different sintering rate.

Download Full-text

Hydroxylamine Seeding of Colloidal Au Nanoparticles in Solution and on Surfaces

Langmuir ◽

10.1021/la970982u ◽

1998 ◽

Vol 14 (4) ◽

pp. 726-728 ◽

Cited By ~ 346

Author(s):

Kenneth R. Brown ◽

Michael J. Natan

Keyword(s):

Au Nanoparticles ◽

Colloidal Au

Download Full-text

Size-controlled, high optical quality ZnO nanowires grown using colloidal Au nanoparticles and ultra-small cluster catalysts

APL Materials ◽

10.1063/1.5054355 ◽

2019 ◽

Vol 7 (2) ◽

pp. 022518

Author(s):

M. F. Lynam ◽

N.-J. Ke ◽

S. J. Bradley ◽

T. Nann ◽

A. Neiman ◽

...

Keyword(s):

Au Nanoparticles ◽

Optical Quality ◽

Zno Nanowires ◽

Small Cluster ◽

High Optical Quality ◽

Colloidal Au ◽

Size Controlled

Download Full-text

Probing the ligand exchange kinetics of phenynyl-based ligands on colloidal Au nanoparticles

Materials Chemistry Frontiers ◽

10.1039/d0qm00612b ◽

2021 ◽

Vol 5 (1) ◽

pp. 465-471

Author(s):

Ting Xiang ◽

Jianpeng Zong ◽

Wenjia Xu ◽

Yuhua Feng ◽

Hongyu Chen

Keyword(s):

Real Time ◽

Ligand Exchange ◽

Au Nanoparticles ◽

Relative Strength ◽

Real Time Monitoring ◽

Exchange Kinetics ◽

Colloidal Au ◽

Kinetics Of

We show that phenynyl ligand could readily bind to colloidal Au nanoparticles. By real-time monitoring the SERS during ligand exchange, the relative strength of phenynyls, thiols and PVP ligands, and different phenynyls were successfully ranked.

Download Full-text