نتایج جستجو برای: platinum monolayer
تعداد نتایج: 42106 فیلتر نتایج به سال:
مس و آلیاژ هایش به دلیل رسانایی الکتریکی و گرمایی بالا در صنایع مختلف، کاربرد دارند. جهت از بین بردن اثر نامطلوب رسوب ها و محصولات خوردگی بر روی انتقال گرما از طریق مس از هیدرو کلریک اسید استفاده می شود. یکی از مشکلات مس و آلیاژهای آن، خوردگی در محیط های حاوی یون های کلرید است. برای محافظت فلز ها در مقابل محیط های خورنده، از بازدارنده های خوردگی استفاده می شود. در این تحقیق، اثر بازداری تعدادی ...
Magnetic racetrack devices are promising candidates for next-generation memories. These spintronic shift-register formed from perpendicularly magnetized ferromagnet/heavy metal thin-film systems. Data encoded in domain wall magnetic bits that have a chiral Néel structure is stabilized by an interfacial Dzyaloshinskii–Moriya interaction. The manipulated spin currents generated electrical passed ...
The goal of this work is the separation and recovery of platinum and palladium from spent catalyst. The recovery consisted of separating the maximum amount of platinum and palladium from catalysts and changing them into usable forms. The petroleum and petrochemical units use Pt and Pd catalyst for reactions such as reforming and hydrogenation. Because these materials contain valuable metals...
Reduced graphene oxide film was synthesized on a glassy carbon electrode by electro reduction of graphene oxide powders in aqueous solution. Then platinum nano particles were deposited on reduced graphene oxide film that was deposited on the glassy carbon electrode via electro reduction of platinum salt. The Physical morphology of the platinum on reduced graphene oxide film was evaluated by sca...
background: telomerase activity increases in cancer cells. bcl-2 is an antiapoptotic factor that its concentration grows in many cancer cells including hepatocellular carcinoma cells. in this study, an attempt was made to investigate the effects of a new synthetic compound, platinum azidothymidine (pt-azt) on treatment of rats with hepatocellular carcinoma (hcc) and to compare its effects with ...
a chelating resin is prepared by condensation polymerization of aniline with formaldehyde andcharacterized by ft-ir, elemental analysis and studied for the preconcentration and determination of traceplatinum ion from environmental water sample using inductively coupled plasma-atomic emission spectroscopy(icp-aes). the optimum ph value for sorption of the metal ions was 5. the maximum adsorption...
This work investigates the electrochemical study of glutathione self-assembled monolayers (SAMs) prepared from aqueous solution on gold and platinum surfaces. The deposit SAMs monolayers were characterized by cyclic voltammetry and electrochemical impedance spectroscopy methods. In addition, the interpretation of electrochemical impedance spectroscopy results was based on the charge-transfer re...
By anodizing of titanium and then electroplating of Platinum on surface anodized titanium, electrodes with high effective surface catalytic were made. Consideration of surface morphology using scanning electron microscope (SEM) shows that, with anodizing, micro porous layer on titanium surface was prepared. The electro catalytic behavior of this type of electrodes in the isopropanol electro oxi...
The interaction of Cl with Pt(110) was studied in UHV by scanning tunneling microscopy, low-energy electron diffraction, temperature-programmed desorption, and DFT calculations. Up to half a monolayer (ML) of Cl forms an adsorbate structure. Compression to higher local coverages leads to erosion of Pt atoms from the top layer and formation of PtCl(4) pentamers. Annealing results in healing of t...
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