Facile synthesis of highly ordered mesoporous Fe3O4 with ultrasensitive detection of dopamine

Publication date: Available online 30 January 2019

Source: Talanta

Author(s): Yarong Huang, Yongzhao Zhang, Dandan Liu, Menggang Li, Yongsheng Yu, Weiwei Yang, Haibo Li

Abstract

Dopamine (DA) detection is significant for the prevention of unfavorable neuronal illness. However, the detection of DA with low concentration still face tremendous challenges. In this study, highly ordered mesoporous Fe₃O₄ materials were synthesized as a biosensor by using mesoporous silica KIT-6 with different aging temperature as hard template. The ordered mesoporous Fe₃O₄ with high surface area modified glassy carbon electrode shows the high sensitivity for detecting DA. Fe₃O₄-40 mesoporous material modified electrode has the highest catalytic activity to DA with a sensitivity of 0.053 nA·nM^-1 and a detection limit of 0.8 nM (S/N=3). The results indicating that the mesoporous Fe₃O₄ material modified electrode exhibits high sensitivity to determine DA at low levels, which can be used for DA real-time monitoring in neutral biological media.

Graphical abstract

from A via a.sfakia on Inoreader http://bit.ly/2TnMois