The thermal stability mechanism of gold nanorods in aqueous solution
The thermal stability mechanism of gold nanorods in aqueous solution
复制标题
金纳米棒在水溶液中的热稳定性机理
DOI：
10.1016/j.ijleo.2016.08.064
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发表时间：
2016-01-01
期刊：
影响因子：
3.1
通讯作者：
Xia, Zhilin
中科院分区：
文献类型：
--
作者：
Huang, Jiyun;Mao, Pengyan;Xia, Zhilin
金纳米棒通过种子介导生长法制备，并在45 - 105 ℃的水溶液中保持。研究发现，在60 ~ 90 ℃之间，金纳米棒的纵向吸收峰明显向较短的波长移动，这种蓝移现象在一段时间后消失。本文基于类液壳理论，结合金属吉布斯自由能随温度变化的规律，研究了金纳米棒的热致变形机理，特别是分析了金纳米棒在高温下能够稳定保存在水溶液中的原因。(C)2016 Elsevier GmbH. All rights reserved.
Gold nanorods were prepared by seed-mediated growth method and were kept inaqueous solution between 45 and 105 degrees C. It was found that the longitudinal absorption peak of the gold nanorods obviously moved to a shorter wavelength between 60 and 90 degrees C and this blue shift phenomenon disappeared after a period of time. In this paper, based on the theories of the liquid-like shell, combining the rule that the metal Gibbs free energy changes with temperature, the heat induced deformed mechanism has been studied and especially why the gold nanorods can be stably kept in aqueous solution at high temperature has been analyzed. (C) 2016 Elsevier GmbH. All rights reserved.