Radiation synthesis of chitosan stabilized gold nanoparticles comparison between e鈭?/sup> beam and 纬 irradiation
详细信息 查看全文
- 作者：Khoa Dang Nguyen Vo ; Christelle Kow ; y ; Laurent Dupont ; Xavier Coqueret ; Nguyen Quoc Hien
- 关键词：Au nanoparticles ; In situ reduction ; Chitosan ; e&minus ; Beam ; Gamma irradiation
- 刊名：Radiation Physics and Chemistry
- 出版年：January, 2014
- 年：2014
- 卷：94
- 期：Complete
- 页码：84-87
- 全文大小：304 K
文摘
Gold nanoparticles were synthesized via radiolytic reduction of Au(III) salts induced by e鈭?/sup> beam or 纬-irradiation, using chitosan as a stabilizer. The effect of irradiation dose, chitosan concentration and the conditioning of HAuCl4-chitosan solutions were studied. UV-visible absorption measurements reveal that the size of Au clusters formed immediately after irradiation is correlated with the extent of chitosan scission chain of chitosan and fall with the increase of dose absorbed. This effect is more pronounced with solution conditioned under Argon (Ar). Au clusters coalesce to form stable nanoparticles after two weeks.