Published 2000 | Version v1
Journal article Metadata-only

Aqueous solutions of colloidal nickel: radiation-chemical preparation, optical spectra and properties

Creators

  • 1. Inst. Fizicheskoj Khimii RAN, Moscow (Russian Federation)

Description

Radiation-chemical reduction of Ni2+ ions in aqueous solutions of Ni(ClO4)2, containing HCOONa or isopropanol has been studied. It is found that stable solutions of colloidal nickel are formed in the presence of stabilizers (polyethyleneimine, polyacrylate, polyvinylsulphate or polyvinyl alcohol) upon gamma-irradiation of deaerated solutions. Metal sols are spherical particles, 2-4 nm in diameter. Aqueous solution of colloidal nickel has optical absorption band at 215±5 nm and shoulder at about 350 nm. The radiation-chemical reduction of Ni2+ ions includes the reaction with hydrated electrodes and organic radicals

Abstract (Russian)

Изучено радиационно-химическое восстановление ионов Ni2+ в водных растворах Ni(ClO4)2, содержащих формиат натрия или изопропиловый спирт. Установлено, что при гамма-облучении деаэрированных растворов в присутствии полиэтиленимина, полиакрилата или поливинилсульфата возникают устойчивые золи металла, содержащие сферические частицы диаметром 2-4 нм. В спектре оптического поглощения наночастиц никеля наблюдается полоса с максимумом при 215±5 нм и плечо 350 нм. Предложен механизм радиационно-химического восстановления ионов Ni2+ гидратированными электронами и органическими радикалами

Additional details

Additional titles

Original title (Russian)
Водные растворы коллоидного никеля: радиационно-химическое получение, спектры поглощения и свойства

Publishing Information

Journal Title
Izvestiya Akademii Nauk. Rossijskaya Akademiya Nauk. Seriya Khimicheskaya
Journal Issue
no.10
Journal Page Range
p. 1733-1739
ISSN
1026-3500
CODEN
IASKEA

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
32043834
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Descriptors DEI
ABSORPTION SPECTRA; AQUEOUS SOLUTIONS; CHEMICAL PROPERTIES; CHEMICAL RADIATION EFFECTS; COBALT 60; DOSE RATES; FORMATES; GAMMA RADIATION; NICKEL COMPOUNDS; PARTICLE SIZE; PERCHLORATES; PROPANOLS; RADIATION DOSES; REDOX POTENTIAL; REDUCTION; SOLS
Descriptors DEC
ALCOHOLS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBOXYLIC ACID SALTS; CHEMICAL REACTIONS; CHLORINE COMPOUNDS; COBALT ISOTOPES; COLLOIDS; DISPERSIONS; DOSES; ELECTROMAGNETIC RADIATION; HALOGEN COMPOUNDS; HOMOGENEOUS MIXTURES; HYDROXY COMPOUNDS; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MINUTES LIVING RADIOISOTOPES; MIXTURES; NUCLEI; ODD-ODD NUCLEI; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; RADIATION EFFECTS; RADIATIONS; RADIOISOTOPES; SIZE; SOLUTIONS; SPECTRA; TRANSITION ELEMENT COMPOUNDS; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
20 refs.; 7 figs.