scholarly journals Coordination cage hosting ultrafine and highly catalytically active gold nanoparticles

2021 ◽  
Author(s):  
Xinxin Hang ◽  
Shentang Wang ◽  
Huan Pang ◽  
Qiang Xu
Keyword(s):  
Gold Nanoparticles ◽  
Metal Nanoparticles ◽  
Controlled Synthesis ◽  
Au Nps ◽  
Ultrafine Metal ◽  
Catalytically Active ◽  
Size Controlled

Ultrafine metal nanoparticles (MNPs) with size <2 nm are of great interest due to their superior catalytic capabilities. Herein, we report the size-controlled synthesis of gold nanoparticles (Au NPs) by...

Size Controlled Synthesis of 2-6 nm Gold Nanoparticles via Controlling Concentration of the Reducing Agent and Temperature

2012 ◽  
Vol 557-559 ◽  
pp. 572-576 ◽  
Author(s):  
Wei Luo ◽  
Fei Wang ◽  
Xue Ao Zhang ◽  
Zheng Zheng Shao ◽  
Jing Yue Fang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Reducing Agent ◽  
Controlled Synthesis ◽  
Key Factors ◽  
Facile Synthesis ◽  
Au Nps ◽  
Size Dependent ◽  
Octyl Amine ◽  
Controlled Preparation ◽  
Size Controlled

We reported a facile synthesis route for size controlled preparation of gold nanoparticles (Au NPs) by controlling concentration of the reducing agent and temperature. Nearly monodisperse Au NPs with mean diameters of 2-6 nm are acquired via the reduction of HAuCl4by NaBH4in the presence of tri-n-octyl amine and dodecanethiol in solvent of toluene. Results indicate that concentration of the reducing agent and temperature are key factors to tune the particle size and uniformity in the synthesis of Au NPs. The as-synthesized Au NPs show size dependent surface plasmonic properties between 510 and 525 nm, while Au NPs with size smaller than 3 nm do not clearly show the property.

Size-Controlled Synthesis of Gold Nanoparticles via High-Temperature Reduction

Langmuir ◽  
2004 ◽  
Vol 20 (8) ◽  
pp. 3021-3023 ◽  
Author(s):  
David A. Fleming ◽  
Mary Elizabeth Williams
Keyword(s):  
Gold Nanoparticles ◽  
High Temperature ◽  
Controlled Synthesis ◽  
Temperature Reduction ◽  
Size Controlled

Water-Soluble N-Heterocyclic Carbene-Protected Gold Nanoparticles: Size-Controlled Synthesis, Stability, and Optical Properties

2017 ◽  
Vol 129 (22) ◽  
pp. 6294-6298 ◽  
Author(s):  
Kirsi Salorinne ◽  
Renee W. Y. Man ◽  
Chien-Hung Li ◽  
Masayasu Taki ◽  
Masakazu Nambo ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Water Soluble ◽  
Controlled Synthesis ◽  
Size Controlled

scholarly journals One-Pot Synthesis of Cationic Gold Nanoparticles by Differential Reduction

2017 ◽  
Vol 231 (1) ◽  
Author(s):  
Ralph A. Sperling ◽  
Lorena García-Fernández ◽  
Isaac Ojea-Jiménez ◽  
Jordi Piella ◽  
Neus G. Bastús ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Controlled Synthesis ◽  
One Pot ◽  
One Pot Synthesis ◽  
Differential Reduction ◽  
Size Controlled ◽  
Cationic Gold

AbstractThe size-controlled synthesis of cationic particles by differential reduction of HAuCl

Size-controlled Synthesis of Gold Nanoparticles by Thermolysis of a Gold(I)-Sulfide Complex in the Presence of Alkylamines

2009 ◽  
Vol 64 (11-12) ◽  
pp. 1305-1311 ◽  
Author(s):  
Mari Yamamoto ◽  
Yukiyasu Kashiwagi ◽  
Masami Nakamoto
Keyword(s):  
Gold Nanoparticles ◽  
Photoelectron Spectroscopy ◽  
Thermal Analyses ◽  
Controlled Synthesis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Alkyl Chains ◽  
Transmission Electron ◽  
Gas Chromatography Mass Spectroscopy ◽  
Size Controlled

A size-controlled synthesis of gold nanoparticles has been developed by the thermolysis of AuCl(SMe2) in the presence of alkylamines at 120 °C. In the procedure, the key intermediate was [Au(NH2R)2]Cl, detected by electrospray ionization (ESI) mass spectrometry. This thermally unstable intermediate was reduced by alkylamines under mild conditions to produce alkylamine-capped gold nanoparticles. The average diameters of the gold nanoparticles could be regulated in a range from 4.3 to 6.1 nm by applying primary alkylamines with alkyl chains of different lengths. Larger gold nanoparticles with diameters from 10 to 22 nm were prepared by a combination of alkylamines and alkylcarboxylic acids with various lengths of the alkyl chains. The gold nanoparticles were characterized by transmission electron microscopy (TEM), UV/Vis absorption spectroscopy, powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), gas chromatography/mass spectroscopy (GC/MS), and thermogravimetric and differencial thermal analyses (TG/DTA)

scholarly journals Size-controlled synthesis of monodispersed gold nanoparticles via carbon monoxide gas reduction

2011 ◽  
Vol 6 (1) ◽  
pp. 428 ◽  
Author(s):  
Joseph K Young ◽  
Nastassja A Lewinski ◽  
Robert J Langsner ◽  
Laura C Kennedy ◽  
Arthi Satyanarayan ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Gold Nanoparticles ◽  
Controlled Synthesis ◽  
Size Controlled

Design of Polymeric Stabilizers for Size-Controlled Synthesis of Monodisperse Gold Nanoparticles in Water

Langmuir ◽  
2007 ◽  
Vol 23 (2) ◽  
pp. 885-895 ◽  
Author(s):  
Zhenxin Wang ◽  
Bien Tan ◽  
Irshad Hussain ◽  
Nicolas Schaeffer ◽  
Mark F. Wyatt ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Controlled Synthesis ◽  
Size Controlled
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