ISSN:
1435-1536
Keywords:
Silver particles
;
uniform particles
;
silver(I) complex
;
1,2-ethanediamine
;
surface characterization
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Uniform spherical silver particles were produced by decomposing the bis(1,2-ethanediamine)silver(I) complex, by aging a solution of 1.0×10−3 mole dm−3 in silver (I) nitrate, 1.0 mole dm−3 in 1,2-ethanediamine, and 2.5×10−1 mole dm−3 in nitric acid (basic solution) at 100°C for 42 min. The average modal diameter was estimated to be 0.52 μm with a relative standard deviation of 0.10. A moderately oxygenrich layer, ∼40 Å thick, on the surface of the particles was detected by means of photoelectron surface microanalysis (XPS). The silver particles grew through a polynuclear-layer mechanism, as judged from the concentration change in soluble silver(I) species in the supernatant solution. The particles' point of zero charge (PZC) was estimated at pH 6.5 by potentiometric titration.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00660310
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