Adhesion of silver iodide molecules to gaseous metallic silver cluster cations

1993 ◽  
Vol 97 (25) ◽  
pp. 6598-6601 ◽  
Author(s):  
Clifton K. Fagerquist ◽  
Dilip K. Sensharma ◽  
Temer S. Ahmadi ◽  
M. A. El-Sayed
Keyword(s):  
Silver Iodide ◽  
Silver Cluster ◽  
Metallic Silver

Iodine Release from Silver Iodide under Reducing Condition with Iron-Bearing Minerals

2002 ◽  
Vol 713 ◽  
Author(s):  
X. Xia ◽  
Y. Inagaki ◽  
A. Hattori ◽  
K. Idemitsu ◽  
T. Arima
Keyword(s):  
Silver Iodide ◽  
Solid Phase ◽  
Equilibrium Concentration ◽  
Metallic Silver ◽  
Reducing Conditions ◽  
Key Factor ◽  
Solution Kinetic ◽  
Iodine Release ◽  
Iron Bearing ◽  
Reducing Condition

ABSTRACTIodine release from silver iodide (AgI) to water was evaluated under reducing conditions in the presence of iron-bearing minerals, goethite (FeOOH), magnetite (Fe3O4) and Wüstite (FeO). The release tests were performed in a glove box purged with gas mixture (Ar+5%H2), and the concentrations of dissolved iodine, silver and iron were measured. The apparent equilibrium concentration of dissolved iodine was 4.0 ×10−8, 4.3×10−8 mol/l for the tests with FeOOH and Fe3O4, respectively. The values were almost the same as in the test without minerals. For the test with FeO, the concentration of dissolved iodine was 5.4×10−3 mol/l, which is five orders of magnitude higher than for the other tests. Solid phase analyses by using XRD and SEM/EDS indicated that metallic silver precipitated on the surface of the original AgI for the test with FeO and on the surface of Fe3O4 for the test with Fe3O4, but not for that with FeOOH. These results showed that only FeO could reduce AgI effectively to increase iodine release. The amount of dissolved Fe(II) was a key factor affecting AgI reduction instead of redox potential of solution. Kinetic processes may also play an important role in AgI reduction and associated iodine release under reducing condition.

FERMI-ENERGY AND MINIMUM DIAMETER FOR METALLIC SILVER CLUSTER

2005 ◽  
Vol 19 (15n17) ◽  
pp. 2404-2408
Author(s):  
BAIBIAO HUANG ◽  
YING DAI ◽  
RUN LONG ◽  
CUIXIA YAN ◽  
DADI DAI
Keyword(s):  
Layer Thickness ◽  
Fermi Energy ◽  
Density Functional ◽  
Surface States ◽  
Density Functional Theory Method ◽  
Silver Cluster ◽  
Minimum Size ◽  
Metallic Silver ◽  
Minimum Diameter ◽  
Metallic Clusters

The Fermi energy and the minimum size for silver ( Ag ) metallic clusters have been investigated by the electronic structure calculations using density functional theory method. The results reveal that the work function of clusters with metallicity has the same value as that of bulk metals. This result is interpreted by the role of localized surface states in a thin layer and furthermore it is deduced that a nonmetal layer exists at the surface of Ag bulk metals and their clusters. This layer-thickness is about the same as the lattice constant and the minimum diameter for metallic clusters is about twice of the layer-thickness.

Compositional Tuning of Negative Differential Resistance in Bulk Silver Iodide Memristor

2020 ◽  
Author(s):  
SMITA GAJANAN NAIK ◽  
Mohammad Hussain Kasim Rabinal
Keyword(s):  
Power Consumption ◽  
Negative Differential Resistance ◽  
Silver Iodide ◽  
Differential Resistance ◽  
Fast Response ◽  
Low Power Consumption ◽  
Switching Effect ◽  
Memory Switching ◽  
Bulk Silver ◽  
Emerging Memory

Electrical memory switching effect has received a great interest to develop emerging memory technology such as memristors. The high density, fast response, multi-bit storage and low power consumption are their...

Green Synthesis of Silver Nanoparticles by Allamanda cathartica L. Leaf Extract and Evaluation for Antimicrobial Activity

2013 ◽  
Vol 6 (4) ◽  
pp. 2260-2268
Author(s):  
M. Linga Rao ◽  
Bhumi G ◽  
Savithramma N
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Leaf Extract ◽  
Fusarium Species ◽  
Inhibition Zone ◽  
Fungal Species ◽  
Green Technology ◽  
Metallic Silver ◽  
Synthesis Of Nanoparticles ◽  
Aqueous Leaf Extract

Silver nanoparticles (SNPs) exhibit tremendous applications in medicine as antimicrobial agent.  The use of different parts of plants for the synthesis of nanoparticles is considered as a green technology as it does not involve any harmful chemicals.  In the present study, we report a rapid biosynthesis of silver nanoparticles from aqueous leaf extract of medicinal plant Allamanda cathartica.  The active phytochemicals present in the plant were responsible for the quick reduction of silver ion to metallic silver nanoparticles. The reduced silver nanoparticles were characterized by using UV-Vis spectrophotometry, Scanning Electron Microscope (SEM), Energy Dispersive Analysis of X-ray (EDAX) and Atomic Force Microscopy (AFM).  The spherical shaped silver nanoparticles were observed and it was found to 19-40 nm range of size.  These phytosynthesized SNPs were tested for their antimicrobial activity and it analyzed by measuring the inhibitory zone. A. cathartica aqueous leaf extract of SNPs showed highest toxicity to Pseudomonas followed by Klebsiella, Bacillus and E. coli and lowest toxicity towards Proteus. In fungal species, highest inhibition zone was noted against Rhizopus followed by Curvularia, Aspergillus flavus and Aspergillus niger and minimum inhibition zone was observed against Fusarium species.  These results suggest a promising potential of Indian plant-based green chemistry for production of SNPs for biomedical and nanotechnology applications.

Properties of the positively charged sol of silver iodide

1949 ◽  
Vol 14 ◽  
pp. 305-319 ◽  
Author(s):  
J. V. Kubal
Keyword(s):  
Silver Iodide ◽  
Positively Charged

Semibridging Phenyl Ligands in Iridium–Copper and Iridium–Silver Cluster Compounds: Synthesis, Structures, and Bonding

2013 ◽  
Vol 32 (8) ◽  
pp. 2416-2426 ◽  
Author(s):  
Richard D. Adams ◽  
Mingwei Chen ◽  
Gaya Elpitiya ◽  
Xinzheng Yang ◽  
Qiang Zhang
Keyword(s):  
Silver Cluster ◽  
Cluster Compounds

Eco-friendly biosynthesis metallic silver nanoparticles using Aegle marmelos (Indian bael) and its clinical and environmental applications

2021 ◽  
Author(s):  
Gattu Sampath ◽  
Muthusamy Govarthanan ◽  
Neelamegam Rameshkumar ◽  
Dai-Viet N. Vo ◽  
Muthukalingan Krishnan ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Environmental Applications ◽  
Metallic Silver ◽  
Aegle Marmelos
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