Charging and discharging at the nanoscale: Fermi level equilibration of metallic nanoparticles.
Charging and discharging at the nanoscale: Fermi level equilibration of metallic nanoparticles.
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DOI：
10.1039/c5sc00461f
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发表时间：
2015-05-01
期刊：
影响因子：
8.4
通讯作者：
Girault HH
中科院分区：
文献类型：
--
作者：
Scanlon MD;Peljo P;Méndez MA;Smirnov E;Girault HH
纳米粒子的周围环境、过剩电荷和尺寸都会影响纳米粒子中电子的费米能级，从而对纳米粒子的性质产生重要影响。讨论了金属纳米粒子的氧化还原性质，特别是过量电荷、尺寸和电子费米能级之间的关系。使用简单的静电模型，以提供一个简单的理解的基本现象的氧化还原电位。介绍了测量费米能级变化的不同方法。最后，讨论了毒性、电致变色性和表面等离子体光谱等过程的氧化还原方面。
Surrounding environment, excess charge and size affect the Fermi level of the electrons in nanoparticles, having a significant influence on their properties. The redox properties of metallic nanoparticles are discussed, in particular the relationships between excess charge, size and the Fermi level of the electrons. The redox potentials are derived using simple electrostatic models to provide a straightforward understanding of the basic phenomena. The different techniques used to measure the variation of Fermi level are presented. Finally, redox aspects of processes such as toxicity, electrochromicity and surface plasmon spectroscopy are discussed.