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Copper nanoparticles are prepared in aqueous solution by reducing copper ions with hydrazine hydrate in the presence of cetyl trimethylammonium bromide (CTAB) and polyvinylpyrrolydone (PVP) as stabilizers. With only CTAB was used as stabilizer, copper nanoparticles are aggregated and partially oxidized to Cu 2 O. When both PVP and CTAB were used, dispersed copper nanoparticles with 56nm diameter...
The oxidation free copper nanoparticles were synthesized by electron beam irradiation in the ethylene glycol matrix without reduction agent. This electron beam irradiation reduction method (EBIRM) was simple and clean process because of unused the reduction agent. The metal precursor solution was prepared as fellow. The CuSO4·5H2O and polyvinylpyrrolydone (PVP) were soluted in the ethylene glycol...
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