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Growth and sedimentation of fine particles produced in aqueous solutions of palladium sulfate and palladium sulfate-silver sulfate induced by gamma-ray irradiation

Abstract

It is known that palladium and palladium-silver fine particles were formed from deaerated aqueous solutions of palladium sulfate and palladium sulfate-silver sulfate induced by gamma-ray irradiation. Changes in particle size and with amount of particles in the solution with time during and after irradiation were studied using dynamic light scattering technique and UV spectrophotometer. The particles formed from palladium sulfate solution are found to be water-filled bulky particles of diameter of 200 nm, which grow by mutual coagulation even after irradiation was terminated. Average density depends on concentration of palladium ion in the solution and dose, and the lowest density was about 2 g/cm{sup 3} for particles of 200 nm obtained from 0.06 mM solution by 2.4 kGy irradiation. The average density of the particles obtained from palladium sulfate-silver sulfate solutions was smaller than those obtained for the corresponding palladium sulfate solutions. Supersonic agitation destroyed coagulated precipitates to form fine particles, but did not form clusters of a few atoms. (author).
Authors:
Hatada, Motoyoshi; Jonah, C D [1] 
  1. Japan Atomic Energy Research Inst., Neyagawa, Osaka (Japan). Osaka Lab. for Radiation Chemistry
Publication Date:
Oct 01, 1994
Product Type:
Technical Report
Report Number:
JAERI-Research-94-019
Reference Number:
SCA: 400600; PA: JPN-95:001153; EDB-95:037103; SN: 95001344953
Resource Relation:
Other Information: PBD: Oct 1994
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; PALLADIUM COMPOUNDS; RADIATION CHEMISTRY; SILVER SULFATES; PARTICLES; GROWTH; SEDIMENTATION; GAMMA RADIATION; IRRADIATION; SCATTERING; CHEMICAL RADIATION EFFECTS; 400600
OSTI ID:
10121626
Research Organizations:
Japan Atomic Energy Research Inst., Tokyo (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE95747848; TRN: JP9501153
Availability:
OSTI; NTIS; INIS
Submitting Site:
JPN
Size:
42 p.
Announcement Date:
Jun 30, 2005

Citation Formats

Hatada, Motoyoshi, and Jonah, C D. Growth and sedimentation of fine particles produced in aqueous solutions of palladium sulfate and palladium sulfate-silver sulfate induced by gamma-ray irradiation. Japan: N. p., 1994. Web.
Hatada, Motoyoshi, & Jonah, C D. Growth and sedimentation of fine particles produced in aqueous solutions of palladium sulfate and palladium sulfate-silver sulfate induced by gamma-ray irradiation. Japan.
Hatada, Motoyoshi, and Jonah, C D. 1994. "Growth and sedimentation of fine particles produced in aqueous solutions of palladium sulfate and palladium sulfate-silver sulfate induced by gamma-ray irradiation." Japan.
@misc{etde_10121626,
title = {Growth and sedimentation of fine particles produced in aqueous solutions of palladium sulfate and palladium sulfate-silver sulfate induced by gamma-ray irradiation}
author = {Hatada, Motoyoshi, and Jonah, C D}
abstractNote = {It is known that palladium and palladium-silver fine particles were formed from deaerated aqueous solutions of palladium sulfate and palladium sulfate-silver sulfate induced by gamma-ray irradiation. Changes in particle size and with amount of particles in the solution with time during and after irradiation were studied using dynamic light scattering technique and UV spectrophotometer. The particles formed from palladium sulfate solution are found to be water-filled bulky particles of diameter of 200 nm, which grow by mutual coagulation even after irradiation was terminated. Average density depends on concentration of palladium ion in the solution and dose, and the lowest density was about 2 g/cm{sup 3} for particles of 200 nm obtained from 0.06 mM solution by 2.4 kGy irradiation. The average density of the particles obtained from palladium sulfate-silver sulfate solutions was smaller than those obtained for the corresponding palladium sulfate solutions. Supersonic agitation destroyed coagulated precipitates to form fine particles, but did not form clusters of a few atoms. (author).}
place = {Japan}
year = {1994}
month = {Oct}
}