نتایج جستجو برای: gold and silver
تعداد نتایج: 16853666 فیلتر نتایج به سال:
Widespread use of silver nanoparticles raises questions of environmental and biological impact. Many synthesis approaches are used to produce pure silver and silver-shell gold-core particles optimized for specific applications. Since both nanoparticles and silver dissolved from the particles may impact the biological response, it is important to understand the physicochemical characteristics al...
Heterostructured nanocrystals containing multiple components are attracting attention due to not only their multifunctional properties but also new features arising from the effective coupling of different domains.1,2 Numerous semiconducting heterostructures have been synthesized by gas-phase deposition and are being used for the miniaturization of electronic and photonic circuits.3 Metallic he...
Nanobiotechnology has become a resourceful/crucial research area due to their copious applications in industrial, pharmacological and medical fields. In the current study, silver nanoparticles (OFI-AgNPs), gold (OFI -AuNPs) bimetallic alloy (OFI-Ag-AuNPs) were mediated with Opuntia ficus indica (OFI) extract. Evaluation of antioxidant potential biosynthesized was done through total phenolic con...
We report herein the designed synthesis of four silver(I)- or gold(I)-bridged flexible metalla-macrocycles (MMCs) and their distinct performance in the surface modification of gold nanoparticles (AuNPs). The resulting gold(I)-MMCs-modified AuNPs were found to be resistant to pH variation and capable of binding with metal ions.
In this paper surface plasmon resonance sensor is studied by using gold and silver in its structure respectively, also the possibility of extraordinary high spectral sensitivity by using multimode sensing scheme is being investigated in this sensor. It is shown that due to the extraordinary high spectral sensitivity of surface plasmon resonance sensor measuring adsorbate layer thickness could b...
• Au and Ag deportment in an intermediate sulfidation Ag-Pb-Zn system. Deportment calculation using quantitative mineralogy, bulk mineral chemistry. Deportments are highly variable between samples due to mineralogical contrast. Gold the Freiberg district is primarily hosted by arsenopyrite electrum. Silver sulfosalts fahlore. data essential for planning of mining minerals processing operations....
Gold is one of the most inert metals, forming very few compounds, and only a them are currently known to be superconducting. Here we have found yet another chemical compound gold (and silver) that
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