Ion‐Solvent Interactions of Silver (I) Salts in Water‐DMSO Mixtures from Conductance Measurements

Sreekumar, T. K.; Janardhanan, S.; Kalidas, C.

doi:10.1002/bbpc.19910950102

Cited by 6 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In aqueous solutions, silver salts may generate [Ag(H 2 O) 2 ] + ; however, the addition of DMSO to water may cause dehydration of the Ag + ion to leave free coordination sites for DMSO molecules . On the other hand, the interaction DMSO−H 2 O is stronger than Ag +- H 2 O; therefore, we reject the idea of possible formation of a complex containing coordinated water.…”

Section: Resultsmentioning

confidence: 87%

Metallic Nanoparticles from Spontaneous Reduction of Silver(I) in DMSO. Interaction between Nitric Oxide and Silver Nanoparticles

et al. 2002

View full text Add to dashboard Cite

Here we report a novel pathway for the synthesis of silver nanoparticles. Spontaneous reduction of silver 2-ethylhexanoate [Ag(ethex)] takes place in dimethyl sulfoxide (DMSO) at room temperature. The reaction is slow and markedly depends on temperature leading to the formation of silver nanoparticles (NPs) with a surface plasmon resonant band maximum centered at 424 nm. Colloidal silver is not stable in DMSO without stabilizing agents. When sodium citrate (1 × 10 -4 M) is utilized as a capping agent, the surface plasmon shifts to 414 nm and the surface-modified silver nanoparticles are stable for more than 6 months. The resulting nanoparticles are quite stable but at the same time reactive enough for catalytic purposes. An HR-TEM study shows a nanoparticles size distribution centered in 4.4 nm of diameter (SD ) 1.2) and a considerable number of defects such as stacking faults and twined particles. From ab initio quantum mechanical calculations, we propose a possible precursor for the spontaneous reduction of [Ag(ethex)] in DMSO. In addition, the interaction between NO and silver nanoparticles was tested. UV-visible spectra show the oxidation of silver and the reduction of NO at room temperature. The most probable products of this reaction are N 2 O, molecular nitrogen, and oxygen. Therefore, we have a simple catalytic colloidal system for NO.

show abstract

Section: Resultsmentioning

confidence: 87%

Metallic Nanoparticles from Spontaneous Reduction of Silver(I) in DMSO. Interaction between Nitric Oxide and Silver Nanoparticles

et al. 2002

View full text Add to dashboard Cite

show abstract

“…The purification of solvents, the preparation and purification of salts silver(1) perchlorate and biomate have been descr,ibed ear!ier 7) The conductance and transport number measurements were carried, out according to earlier described piocedures (5). Viscosities and densities of solvent mixtures were determined in the usual manner (5).…”

Section: Methodsmentioning

confidence: 99%

Conductance Studies of Silver(I) Salts in Water‐Pyridine Mixtures

Kalidas

Rajendran

1993

Bulletin des Soc Chimique

Self Cite

View full text Add to dashboard Cite

The conductance behaviour of silver(1) perchlorate and bromate has been studied in water-pyridine mixtures over the corn lete range of solvent compositions a! 30°C. The sharp decrease of Wa!den product of silver ion up to 4 O w t k pyridine has been ascribed to selective solvation by pyridine while a similar decrease in the initial stages of addition of water (startin from ure pyridine region) to an infinitely dilute solution of anions in pyridine was explained in terms of sefective Iydration of anions.Conductance studies are useful in the elucidation of selective solvation of ions in binary solvent mixtures (1, 2) which is of technological interest ( 3 4 ) . In continuation of our earlier work in this area (5,6), the results of our conductance measurements on silver(1) perchlorate and bromate in water-pyridine mixtures are reported in order to understand the ion-solvent interactions in these mixtures. 76.7 139.20 f 0.27 0.30 0.83 145.27 2 0.75 0.07 10.8 20 0.9988 11.70 69.2 61.93f 0.08 0.04 15.1 73.79 f 0.16 0.06 14.5 60 0.9985 19.10 44.3 40.00 f 0.06 0.04 11.9 46.41 f 0.25 0.10 19.1 80 0.9920 16.70 29.7 49.12" 0.07 0.02 24.9 48.34 f 0.23 0.07 46.3 100 0.9725 8.20 12.3 111.9Ok 0.66 0.09 1069.5 117.27 2 1.13 0.04 4492.1 40 1.0005 15.60 58.4 43.88 2 0.11 0.05 12.1 55.69k 0.27 0.10 10.2 do = density, tj = viscosity, D = dielectric constant * Standard deviation of individual points 2 = Xi [Aj (calcd) -Aj (obsd)]* / N-2 where N = number of data points. -3 6 5 -

show abstract

3 Mixtures: References

Wohlfarth¹,

Wohlfahrt²

Pure Organometallic and Organononmetallic Liquids, Binary Liquid Mixtures

View full text Add to dashboard Cite

Ion‐Solvent Interactions of Silver (I) Salts in Water‐DMSO Mixtures from Conductance Measurements

Cited by 6 publications

References 15 publications

Metallic Nanoparticles from Spontaneous Reduction of Silver(I) in DMSO. Interaction between Nitric Oxide and Silver Nanoparticles

Metallic Nanoparticles from Spontaneous Reduction of Silver(I) in DMSO. Interaction between Nitric Oxide and Silver Nanoparticles

Conductance Studies of Silver(I) Salts in Water‐Pyridine Mixtures

3 Mixtures: References

Contact Info

Product

Resources

About