Synthesis “in situ” in reverse micelles of silver sulfide semiconductors

2007 ◽  
pp. 189-192 ◽  
Author(s):  
L. Motte ◽  
F. Billoudet ◽  
J. Cizeron ◽  
M. P. Pileni ◽  
L. Motte ◽  
...  
Keyword(s):  
Reverse Micelles ◽  
Silver Sulfide

SYNTHESIZED “IN SITU” IN REVERSE MICELLES OF SILVER-SULFIDE SEMICONDUCTORS

1996 ◽  
Vol 03 (01) ◽  
pp. 1215-1218 ◽  
Author(s):  
M.P. PILENI ◽  
L. MOTTE ◽  
F. BILLOUDET ◽  
C. PETIT
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Reverse Micelles ◽  
Silver Sulfide ◽  
X Ray ◽  
X Ray Scattering ◽  
Transmission Electron ◽  
Nanosize Particles ◽  
Good Agreement

Functionalized reverse micelles are used to control the size of silver sulfide, Ag 2 S , nanosize particles. The size of the crystallites varies linearly with the water content from 2 to 10 nm. The particles have been coated with dodecanethiol and extracted from micelles. The size of the particles dispersed in heptane has been determined by small-angles x-ray scattering (SAXS) experiments and compared to those obtained by transmission electron microscopy (TEM). A good agreement between results is obtained by these two techniques. A drop of particles previously dispersed in heptane is dried on a carbon grill. A network of the particles forming monolayers of crystallites in a hexagonal distribution appears.

scholarly journals Direct TEM observation of the “acanthite α-Ag2S–argentite β-Ag2S” phase transition in a silver sulfide nanoparticle

2019 ◽  
Vol 1 (4) ◽  
pp. 1581-1588 ◽  
Author(s):  
S. I. Sadovnikov ◽  
E. Yu. Gerasimov
Keyword(s):  
Electron Microscopy ◽  
Phase Transition ◽  
Transmission Electron Microscopy ◽  
Silver Sulfide ◽  
Transmission Electron ◽  
Silver Sulfide Nanoparticles ◽  
Microscopy Method ◽  
Electron Microscopy Method ◽  
First Time

For the first time, the α-Ag2S (acanthite)–β-Ag2S (argentite) phase transition in a single silver sulfide nanoparticles has been observed in situ using a high-resolution transmission electron microscopy method in real time.

Genesis of Pt Clusters in Reverse Micelles Investigated by in Situ X-ray Absorption Spectroscopy

2004 ◽  
Vol 108 (24) ◽  
pp. 8148-8152 ◽  
Author(s):  
Yin W. Tsai ◽  
Yu L. Tseng ◽  
Loka S. Sarma ◽  
Din G. Liu ◽  
Jyh F. Lee ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Reverse Micelles ◽  
X Ray ◽  
X Ray Absorption

Synthesis of PbS Semiconductor Microcrystallites In Situ in Reverse Micelles

1994 ◽  
Vol 358 ◽  
Author(s):  
O. De Sanctis ◽  
K. Kadono ◽  
H. Tanaka ◽  
T. Sakaguchi
Keyword(s):  
Particle Size ◽  
Reverse Micelles ◽  
Transition Energy ◽  
Four Wave Mixing ◽  
Nonlinear Property ◽  
Reversed Micelles ◽  
Wave Mixing ◽  
Spectroscopic Characteristics ◽  
Semiconductor Particles

ABSTRACTColloid semiconductor particles of PbS have been prepared in reversed micelles of AOT-heptane. The effects of the AOT, water and reactants concentrations have been studied. The initial crystallite size and its growth with the time aging are strongly dependent on the water/AOT ratio and the ionic pool concentration. The absorption spectroscopic characteristics of the PbS particles have been examined. As the particle size decreases the band gap shifts in color from orange-brown to yellow and approaches the transition energy of the first allowed excited state of a PbS molecule. Moreover, the optical nonlinear property of PbS particles was investigated by Degenerate Four-Wave Mixing (DFWM) experiment using a frequency-doubled Nd:YAG laser.

In-Situ Formation of Silver Nanoparticles Using Nonionic Surfactant Reverse Micelles as Nanoreactors

2014 ◽  
Vol 14 (3) ◽  
pp. 2238-2244 ◽  
Author(s):  
Lok Kumar Shrestha ◽  
Rekha Goswami Shrestha ◽  
Neus Vilanova ◽  
Carlos Rodriguez-Abreu ◽  
Katsuhiko Ariga
Keyword(s):  
Silver Nanoparticles ◽  
Nonionic Surfactant ◽  
Reverse Micelles ◽  
In Situ Formation

Synthesis “in situ” of nanoparticles in reverse micelles

2008 ◽  
pp. 1-9 ◽  
Author(s):  
M. P. Pileni ◽  
I. Lisiecki ◽  
L. Motte ◽  
C. Petit ◽  
J. Cizeron ◽  
...  
Keyword(s):  
Reverse Micelles
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