College of Materials Science and Engineering, Ocean University of China, Qingdao 266071, China.
College of Materials Science and Engineering, Ocean University of China, Qingdao 266071, China.
Anal Chim Acta. 2018 Oct 31;1029:8-14. doi: 10.1016/j.aca.2018.05.042. Epub 2018 May 16.
3D NiO/polyaniline p-p junction foam was prepared and applied for electrochemical detection of Cr. The electrochemical detection using interfacial potential barrier was illustrated and a mature theoretical model was built to demonstrate the mechanism. Electrochemical sensing signals of targets can be revealed by changing the height of potential barrier after specific adsorption. The extra high sensitivity (0.78 μA nM) and low detection limit (3.96 × 10 nM) of Cr were achieved by applying the p-p junction interfacial potential barrier as driven factors. This work proposes a model to apply the potential barrier for electrochemical detection of metal ions, which can be further developed for a wide range of specific substance detection.
3D NiO/聚苯胺 p-n 结泡沫被制备并应用于 Cr 的电化学检测。使用界面势垒的电化学检测进行了说明，并建立了成熟的理论模型来证明其机制。通过特定吸附后改变势垒的高度，可以揭示目标物的电化学传感信号。通过应用 p-n 结界面势垒作为驱动因素，实现了对 Cr 的超高灵敏度（0.78 μA nM）和低检测限（3.96×10 nM）的检测。本工作提出了一种应用势垒进行金属离子电化学检测的模型，该模型可以进一步扩展到广泛的特定物质检测中。
