Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1795419 | Journal of Crystal Growth | 2007 | 7 Pages |
Abstract
Silver nanocluster formation and dissolution was observed in a soda-lime silicate glass with 0.02 wt% of silver after X-ray irradiation followed by annealing. Absorption spectrometry and electron spin resonance measurement results indicated that the silver ions transferred to silver atoms after irradiation. The silver atoms diffused and then aggregated to become nanoclusters after annealing at high temperatures (such as >300 °C). The nanoclusters grew during the first 15 min at 420 °C, and then slowly dissolved over a longer period. The mean nanocluster size estimated based on Mie theory was â¼4 nm at 420 °C for 1 h, decreasing to â¼2 nm after heating for 48 h. The induced defects trapped electrons from silver nanoclusters, and the dissolution of silver nanoclusters to form silver ions results in a net loss in the system energy. The nanoclusters dissolved completely at 560 °C for 1 h.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Jian Zhang, Wen Dong, Liang Qiao, Juan Li, Jingwu Zheng, Jiawei Sheng,