scholarly journals Photochemical production of gold films on the surface of fabric materials

2020 ◽  
Vol 22 (4) ◽  
pp. 28-30
Author(s):  
Perizat Abdurazova ◽  
Malik Sataev ◽  
Gulmira Kenzhibayeva ◽  
Shayzada Koshkarbayeva ◽  
Kalamkas Amanbayeva ◽  
...  
Keyword(s):  
Thin Film ◽  
Aqueous Solutions ◽  
Gold Films ◽  
Gold Chloride ◽  
Special Equipment ◽  
Photochemical Processes ◽  
Sorption Layer ◽  
Fabric Materials ◽  
By Products ◽  
Semiconductor Properties

AbstractA technology for producing gold films on the surface of fabric materials has been developed, which provides for preliminary wetting of the fabric product with aqueous solutions of gold (III) chloride. In this case, a sorption layer of gold chloride is formed on the surface of fabric materials. Then, when drying these products under sunlight, physicochemical and photochemical processes occur, leading initially to the formation of monovalent gold chlorides, which, having semiconductor properties, provide the release of elemental gold. After washing of by-products on the surface of the material remains an ultra-thin film of gold, which has a sufficiently strong grip on the base. Since the proposed technology does not require special equipment it can be used to apply functional films of gold on various products of technical, household and medical purposes.

On the role of tin underlays for the prevention of thermal grooving in thin gold films

1986 ◽  
Vol 44 ◽  
pp. 732-733
Author(s):  
Jin Young Kim ◽  
R. E. Hummel ◽  
R. T. DeHoff
Keyword(s):  
Thin Film ◽  
Free Surface ◽  
Grain Boundary ◽  
Beneficial Effect ◽  
Failure Mechanism ◽  
Failure Mechanisms ◽  
Distinct Advantage ◽  
Gold Films ◽  
Gold Thin Film

Gold thin film metallizations in microelectronic circuits have a distinct advantage over those consisting of aluminum because they are less susceptible to electromigration. When electromigration is no longer the principal failure mechanism, other failure mechanisms caused by d.c. stressing might become important. In gold thin-film metallizations, grain boundary grooving is the principal failure mechanism.Previous studies have shown that grain boundary grooving in gold films can be prevented by an indium underlay between the substrate and gold. The beneficial effect of the In/Au composite film is mainly due to roughening of the surface of the gold films, redistribution of indium on the gold films and formation of In2O3 on the free surface and along the grain boundaries of the gold films during air annealing.

Extraction of Ag(I) ion traces from aqueous solutions using inorganic thin film and nanocrystalline sorbents

2020 ◽  
Vol 23 (13) ◽  
Author(s):  
Bashar Abdulazeez Mahmood ◽  
Bakhteev S.A. ◽  
Majid Ahmed Mohaisen ◽  
Maltsev A.S. ◽  
Dinh Z.T. ◽  
...  
Keyword(s):  
Thin Film ◽  
Aqueous Solutions

Removal of Cyanide from Aqueous Solutions by Adsorption on Activated Carbon Prepared from Lignocellulosic By-products

2015 ◽  
Vol 36 (12) ◽  
pp. 1736-1741 ◽  
Author(s):  
Farid Halet ◽  
Ahmed Réda Yeddou ◽  
Abdelmalek Chergui ◽  
Salima Chergui ◽  
Boubekeur Nadjemi ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
By Products

scholarly journals Solar photodegradation of carbamazepine from aqueous solutions using a compound parabolic concentrator equipped with a sun tracking system

2019 ◽  
Vol 17 (1) ◽  
pp. 477-484 ◽  
Author(s):  
Ahmadreza Yazdanbakhsh ◽  
Reza Nemati ◽  
Mohamadreza Massoudinejad ◽  
Mohamadjavad Jafari ◽  
Masoomeh Dashtdar
Keyword(s):  
Organic Compound ◽  
Aqueous Solutions ◽  
Tracking System ◽  
Transformation Rate ◽  
Solution Ph ◽  
Photo Degradation ◽  
Compound Parabolic Concentrator ◽  
Reactor Temperature ◽  
By Products ◽  
Complete Mineralization

AbstractThe primary purpose of this study was to investigate the efficiency of a Compound Parabolic Concentrator (CPC) equipped with a sun tracking system in the photolysis of carbamazepine as a refractory organic compound. The natural sunlight experiments were accomplished during the period May–July 2017 in Tehran, Iran. The intermediate by-products of the process of solar photodegradation of carbamazepine (CBZ) were characterized using LC–MS. The results showed that increasing the reactor temperature did not significantly change CBZ degradation efficiency. However, the solution pH played a comparatively important role in CBZ solar photo degradation: removal efficiency increased considerably with pH from about 49% at pH 7 to almost 61% at pH 9. According to our findings, using a CPC reactor equipped with a sun tracker system promotes the solar photo-transformation rate of CBZ by 2-3 fold. In addition, LC/MS analysis showed that eight main intermediates were formed in the treated solution after solar photodegradation of CBZ. Therefore, complete mineralization of CBZ was not accomplished.

scholarly journals Mechanistic study of the trans,cis,cis-[RuCl2(DMSO)2(H2O)2] complex photochemistry in aqueous solutions

2020 ◽  
Vol 19 (9) ◽  
pp. 1222-1229
Author(s):  
Anton A. Shushakov ◽  
Svetlana G. Matveeva ◽  
Ivan P. Pozdnyakov ◽  
Vjacheslav P. Grivin ◽  
Victor F. Plyusnin ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Mechanistic Study ◽  
Photochemical Processes

Primary photophysical and photochemical processes for the trans,cis,cis-[RuCl2(DMSO)2(H2O)2] complex (1a) with prospects in photochemotherapy were studied.

Degradation Kinetics and By-Products of Naproxen in Aqueous Solutions by Gamma Irradiation

2012 ◽  
Vol 29 (6) ◽  
pp. 386-391 ◽  
Author(s):  
Binguo Zheng ◽  
Zheng Zheng ◽  
Jibiao Zhang ◽  
Qun Liu ◽  
Jiaqi Wang ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Gamma Irradiation ◽  
Degradation Kinetics ◽  
By Products
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