A ratiometric electrochemical sensor for dopamine detection based on hierarchical manganese dioxide nanoflower/multiwalled carbon nanotube nanocomposite modified glassy carbon electrode
A ratiometric electrochemical sensor for dopamine detection based on hierarchical manganese dioxide nanoflower/multiwalled carbon nanotube nanocomposite modified glassy carbon electrode
复制标题
基于分级二氧化锰纳米花/多壁碳纳米管纳米复合修饰玻碳电极的多巴胺比率电化学传感器
DOI:
10.1016/j.jallcom.2019.06.124
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发表时间:
2019-09
影响因子:
6.2
通讯作者:
Qianfen Zhuang
中科院分区:
文献类型:
--
作者:
Yong Wang;Luyao Wang;Qianfen Zhuang
A ratiometric electrochemical sensor is developed for dopamine detection based on hierarchical manganese dioxide (MnO2) nanoflower/multiwalled carbon nanotube (MWCNT) nanocomposite modified glassy carbon electrode (GCE). The hierarchical MnO2nanoflower was electrodeposited onto the electrochemically pretreated GCE modified with MWCNT (MWCNT/EPGCE) to prepare an inner reference electrochemical probe. The fabrication process of the MnO2/MWCNT/EPGCE electrode was characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. The introduction of MWCNT can not only improve the electrochemical signals of dopamine, but also increase MnO2signals. The origin of the dual signal enhancement for both dopamine and MnO2is reasonably explained by using electrochemical techniques. The results show that the high sensitivity for dopamine detection at MnO2/MWCNT/EPGCE predominately originates from the high surface coverage of dopamine, and the signal enhancement of MnO2on MWCNT/EPGCE is ascribed to the electrocatalytic activity of MWCNT towards the electrodeposited MnO2and the increase of MnO2surface coverage. This sensor based on MnO2/MWCNT/EPGCE has a low detection limit of 0.17 μM and a wide linear range from 0.5 to 30.0 μM. In addition, the sensor displays high selectivity, good reproducibility, and good stability, and can be applied for dopamine detection in human serum samples with satisfactory results.
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DOI:
10.1111/febs.14607
发表时间:
2018-10
期刊:
The FEBS journal
影响因子:
--
作者:
Surmeier DJ
通讯作者:
Surmeier DJ
DOI:
--
发表时间:
1969
期刊:
--
影响因子:
--
作者:
R. Adams
通讯作者:
R. Adams
影响因子:
15.1
作者:
Cakici, Murat;Reddy, Kakarla Raghava;Alonso-Marroquin, Fernando
通讯作者:
Alonso-Marroquin, Fernando
影响因子:
2.8
作者:
D. Jung;Youngsam Yoon;Gil S. Lee
通讯作者:
D. Jung;Youngsam Yoon;Gil S. Lee
影响因子:
7.4
作者:
Tongfang Xiao;Yanan Jiang;Wenliang Ji;L. Mao
通讯作者:
Tongfang Xiao;Yanan Jiang;Wenliang Ji;L. Mao