Nobel Ag–Cu ion-exchange bimetallic nanoclusters formation over gold ion (Au2+) implanted materials RBS and optical study

Author(s):  
A. C. Ferdinand ◽  
D. Manikandan ◽  
P. Manikandan ◽  
G. Kavitha ◽  
R. Gaur ◽  
...  
2021 ◽  
Author(s):  
A. C. Ferdinand ◽  
D. Manikandan ◽  
P. Manikandan ◽  
R. Gaur ◽  
P. S. Raman ◽  
...  

Abstract Technologically driven some glass materials are containing metal clusters have attracted quite attention both in cluster research and in possible futuristic applications of such nanoclusters for magnetic or optoelectronic purposes. In this regard, formation of bimetallic alloys and core–shell nanostructures inside a soda-lime glass were prepared by simple ion-exchange methods and further studied by the optical absorption (OA) properties. Further, we made an attempt for the first time the novel route for the synthesis of bimetallic nanoclusters, gold in various doses was directly implanted in a plain soda-lime glass as well as in a copper and silver ion-exchanged soda-lime glass using the tandem accelerator anticipating the core–shell or alloys phase between the metal species. Also, the post implanted gold (Au+) metal ions were investigated by Rutherford backscattering spectroscopy (RBS) analysis performed on the Cu and Ag ion-exchanged samples to confirm the presence of bimetallic clusters formed by ion-exchange during implantation.


1981 ◽  
Vol 45 (2) ◽  
pp. 249-255 ◽  
Author(s):  
L.D. Bogomolova ◽  
V.A. Gan'shin ◽  
V.A. Jachkin ◽  
M.E. Kubrinskaya ◽  
V.Z. Petrova

Author(s):  
Lyutsiya M. Karimova ◽  
Dmitry V. Zakharyan ◽  
Yaroslav E. Agapitov

Laboratory studies have been carried out on the processing of gold-bearing concentrate from the “Jamgyr” deposit using the JIN CHAN reagent. The influence of the concentration JIN CHAN, the duration of leaching, the temperature of the solution were studied. As a result of research, the extraction of gold and silver into solution using cyanide-free technology was 97,5% and 96%, respectively. The processing of the obtained solutions by the method of sorption was carried out on the MA940BG (gold) ion-exchange resin with the extraction of target components from the solution into the ion-exchange resin: Au – 100,0%, Ag – 77,5%


Author(s):  
Ann M. Thomas ◽  
Virginia Shemeley

Those samples which swell rapidly when exposed to water are, at best, difficult to section for transmission electron microscopy. Some materials literally burst out of the embedding block with the first pass by the knife, and even the most rapid cutting cycle produces sections of limited value. Many ion exchange resins swell in water; some undergo irreversible structural changes when dried. We developed our embedding procedure to handle this type of sample, but it should be applicable to many materials that present similar sectioning difficulties.The purpose of our embedding procedure is to build up a cross-linking network throughout the sample, while it is in a water swollen state. Our procedure was suggested to us by the work of Rosenberg, where he mentioned the formation of a tridimensional structure by the polymerization of the GMA biproduct, triglycol dimethacrylate.


Author(s):  
Sumio Iijima ◽  
Tung Hsu

Suppose the thickness of a thin film of a crystal varies periodically like a regular array of surface steps, kinematical intensities of diffracted waves from this crystal are modulated by a shape transform,


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