Methodological Improvement in Pulsed Laser-Induced Size Reduction of Aqueous Colloidal Gold Nanoparticles by Applying High Pressure

2012 ◽  
Vol 116 (9) ◽  
pp. 5482-5491 ◽  
Author(s):  
Daniel Werner ◽  
Tomoyuki Ueki ◽  
Shuichi Hashimoto
Keyword(s):  
Gold Nanoparticles ◽  
High Pressure ◽  
Colloidal Gold ◽  
Pulsed Laser ◽  
Size Reduction ◽  
Colloidal Gold Nanoparticles ◽  
Methodological Improvement

Laser-driven phase transitions in aqueous colloidal gold nanoparticles under high pressure: picosecond pump–probe study

2016 ◽  
Vol 18 (6) ◽  
pp. 4994-5004 ◽  
Author(s):  
Shuichi Hashimoto ◽  
Tetsuro Katayama ◽  
Kenji Setoura ◽  
Michael Strasser ◽  
Takayuki Uwada ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
High Pressure ◽  
Phase Transitions ◽  
Pulsed Laser ◽  
Water Layer ◽  
Liquid Droplets ◽  
Pump Probe ◽  
Gold Colloids ◽  
Laser Illumination ◽  
Colloidal Gold Nanoparticles

Pulsed-laser illumination of aqueous gold colloids under high pressure enables evaporation from liquid droplets surrounded by a supercritical water layer.

Dense aqueous colloidal gold nanoparticles prepared from highly concentrated precursor solution

2011 ◽  
Vol 362 (2) ◽  
pp. 325-329 ◽  
Author(s):  
Tetsuro Soejima ◽  
Seisaku Oshiro ◽  
Yasuji Nakatsuji ◽  
Seishiro Ito
Keyword(s):  
Gold Nanoparticles ◽  
Colloidal Gold ◽  
Precursor Solution ◽  
Colloidal Gold Nanoparticles

An enhanced ELISA based on modified colloidal gold nanoparticles for the detection of Pb(II)

2011 ◽  
Vol 26 (8) ◽  
pp. 3700-3704 ◽  
Author(s):  
Yu Zhou ◽  
Xiang-Li Tian ◽  
Yan-Song Li ◽  
Feng-Guang Pan ◽  
Yuan-Yuan Zhang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Colloidal Gold ◽  
Colloidal Gold Nanoparticles

Effect of Voltage on Colloidal Gold (Au) Nanoparticles Produced Using Electro-Dissolution-Reduction Method

2015 ◽  
Vol 1115 ◽  
pp. 386-389
Author(s):  
Haroon Haiza ◽  
I.I. Yaacob ◽  
Ahmad Zahirani Ahmad Azhar
Keyword(s):  
Gold Nanoparticles ◽  
Electron Microscope ◽  
Colloidal Gold ◽  
Reduction Process ◽  
Chloride Ions ◽  
Complex Ions ◽  
Dc Power ◽  
Colloidal Gold Nanoparticles ◽  
Transmission Electron ◽  
The Mean

Colloidal gold nanoparticles have been successfully prepared using a simple two-electrode cells connected to a DC power supply. During the electro-dissolution-reduction process, the bulk gold at the anode oxidized into gold cations which then reacted with the chloride ions to form aurochloride complex. The complex ions were then reduced by the citrate ion to form colloidal gold nanoparticles. The size and shape of the nanoparticles were modulated by varying the terminal voltages. The colloidal gold nanoparticles obtained were characterized by field-emission scanning electron microscope (FESEM), transmission electron microscope (TEM) and ultraviolet-visible spectrophotometer (UV-Vis). From FESEM analysis, it was found that by increasing the voltage, the size of colloidal gold nanoparticles produced marginally decreased. The mean sizes of gold nanoparticles were roughly about 23.5 nm, 23.2 nm and 19.3 nm for 32 V, 36 V and 40 V, respectively. TEM micrograph showed that the shape of gold nanoparticles obtained is almost spherical. The characteristic peaks of UV-Vis spectra revealed that the suspension was indeed colloidal gold nanoparticles. Keywords: Gold, Nanoparticles, Electro-dissolution-reduction

scholarly journals Back Cover: Unconventional Chain-Growth Mode in the Assembly of Colloidal Gold Nanoparticles (Angew. Chem. Int. Ed. 32/2012)

2012 ◽  
Vol 51 (32) ◽  
pp. 8122-8122 ◽  
Author(s):  
Hong Wang ◽  
Liyong Chen ◽  
Xiaoshuang Shen ◽  
Liangfang Zhu ◽  
Jiating He ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Colloidal Gold ◽  
Growth Mode ◽  
Chain Growth ◽  
Back Cover ◽  
Colloidal Gold Nanoparticles
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