相关实验视频
Updated: Jul 15, 2026
09:56
High Resolution Physical Characterization of Single Metallic Nanoparticles
Published on: June 28, 2019
15个氧化状态的电化学分辨率为单层保护的金纳米粒子
Bernadette M Quinn1, Peter Liljeroth, Virginia Ruiz
1Laboratory of Physical Chemistry and Electrochemistry, Helsinki University of Technology, P.O. Box 6100, FIN-02015 HUT, Finland. bquinn@cc.hut.fi
Journal of the American Chemical Society
|May 29, 2003
概括
研究人员使用电压测量观察了黄金纳米粒子 (MPC) 中15个量子化充电峰值. 这些峰值的间距揭示了随着电荷的增加金属核心的电容.
科学领域:
- 电化学 电化学 电化学
- 纳米技术纳米技术
- 材料科学 材料科学 材料科学
背景情况:
- 黄金纳米粒子,也称为单层保护集群 (MPC),由于其独特的电子特性而受到广泛研究.
- 了解这些纳米粒子的充电行为对于它们在各种领域的应用至关重要.
研究的目的:
- 报告了第一个对在六乙醇覆盖的金纳米粒子中电压定量化充电峰值的观测.
- 为了研究峰值间距和储存在金属核心中的电荷之间的关系.
主要方法:
- 电压测量被用来在室温下分析六乙醇覆盖的金纳米颗粒溶液.
- 观察到的充电峰的间距被系统地测量.
主要成果:
- 观察到15个不同的电压测量量子化充电峰值.
- 峰值间距的变化与储存在金纳米粒子核心中的电荷增加相关.
结论:
- 观察到的充电峰值提供了黄金纳米粒子量子化充电的直接证据.
- 该研究讨论了在单层保护集群 (MPC) 的电容方面观察到的峰值间距.
相关概念视频
02:58Properties of Transition Metals
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
01:30The Electrical Double Layer
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...