Electrokinetic Manipulation of Silver and Platinum Nanoparticles and Their Stochastic Electrochemical Detection.
Electrokinetic Manipulation of Silver and Platinum Nanoparticles and Their Stochastic Electrochemical Detection.
复制标题
银和铂纳米粒子的动电操纵及其随机电化学检测。
DOI：
10.1021/acs.analchem.7b02807
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发表时间：
2017
影响因子：
7.4
通讯作者：
A. Boika
中科院分区：
文献类型：
--
作者：
Jason Bonezzi;Tulashi Luitel;A. Boika
电动力学现象，如介电泳和微流体流动，用于提高银和铂纳米颗粒的传质速率，并改善其随机电化学检测。这些现象是通过在对电极和工作盘微电极之间施加高频交流（ac）波形而引起的。通过记录在室温和各种交流功率下的计时电流图，结果表明，交流加热导致所研究的纳米颗粒与工作电极表面的碰撞频率增加了101-103倍，以及所测量的法拉第响应的幅度增加。有人建议，开发的方法可以在未来使用，以提高各种重要的生物分析物的超低浓度的检测。
Electrokinetic phenomena such as dielectrophoresis and electrothermal fluid flow are used to increase the rate of mass transfer of silver and platinum nanoparticles and improve their stochastic electrochemical detection. These phenomena are induced by applying a high frequency alternating current (ac) waveform between a counter electrode and a working disk microelectrode. By recording chronoamperograms at room temperature and various ac powers, it is shown that the ac heating leads to an increase in the collision frequency of studied nanoparticles with working electrode surface by a factor of ∼101-103 as well as the increase in the magnitude of the measured faradaic response. It is suggested that the developed methodology could be used in the future to improve the detection of ultralow concentrations of various important bioanalytes.
影响因子：
1.8
作者：
Camacho-Alanis F;Ros A
通讯作者：
Ros A
影响因子：
3.9
作者：
Gierhart, Brian C.;Howitt, David G.;Collins, Scott D.
通讯作者：
Collins, Scott D.