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Synthesis of Au@ZIF-8 nanocomposites for enhanced electrochemical detection of dopamine
Lu, Shun1; Hummel, Matthew1; Chen, Ke2; Zhou, Yue2; Kang, Shuai3; Gu, Zhengrong1
2020-05-01
摘要Gold nanoparticles and zeolitic imidazolate framework-8 nanocomposites (Au@ZIF-8) were synthesized through a simple hydrothermal method and used as an enzyme-free sensor for dopamine detection. Various characterizations were used to investigate the structure and morphology of Au@ZIF-8 nanocomposites. The electrochemical performance of Au@ZIF-8 nanocomposite modified glassy carbon electrode (Au@ZIF-8/GCE) was examined in 0.1M phosphate-buffered saline with different concentrations of dopamine. Consequently, Au@ZIF-8/GCE possessed an excellent electrochemical catalytic performance to dopamine, having been reported to its wider linear range from 0.1 to 50 mu M, lower detection limit of 0.01 mu M (S/N= 3) and higher sensitivity of 6.452 mu AmM-1 cm(-2). The proposed sensor exhibited acceptable stability and repeatability due to the coupling effect of Au nanoparticles and ZIF-8. All the evidence suggested a potential application of Au@ZIF-8 nanocomposites in a non-enzymatic dopamine sensor.
关键词Au@ZIF-8 Dopamine Electrochemical sensor Hydrothermal method
DOI10.1016/j.elecom.2020.106715
发表期刊ELECTROCHEMISTRY COMMUNICATIONS
ISSN1388-2481
卷号114页码:6
通讯作者Lu, Shun(Shun.Lu@sdstate.edu) ; Gu, Zhengrong(Zhengrong.Gu@sdstate.edu)
收录类别SCI
WOS记录号WOS:000525337000008
语种英语