Golf ball-like MoS2 nanosheet arrays anchored onto carbon nanofibers for electrochemical detection of dopamine

被引：28

作者：

Yue, Hong Yan ^{[1
]}

Wu, Peng Fei ^{[1
]}

Huang, Shuo ^{[1
,2
]}

Wang, Zeng Ze ^{[1
]}

Gao, Xin ^{[1
]}

Song, Shan Shan ^{[1
]}

Wang, Wan Qiu ^{[1
]}

Zhang, Hong Jie ^{[1
]}

Guo, Xin Rui ^{[1
]}

机构：

[1] Harbin Univ Sci & Technol, Sch Mat Sci & Engn, Harbin 150040, Heilongjiang, Peoples R China

[2] Harbin Med Univ, Affiliated Hosp 1, Dept Neurol, Harbin 150001, Heilongjiang, Peoples R China

来源：

MICROCHIMICA ACTA | 2019年 / 186卷 / 06期

关键词：

MoS2; nanosheet; Carbon nanofibers; Dopamine; Uric acid; Hydrothermal synthesis; Electroanalysis; ASCORBIC-ACID; URIC-ACID; GRAPHENE OXIDE; SENSITIVE DETERMINATION; AU NANOPARTICLES; SENSOR; ELECTRODE; PLATFORM;

D O I：

10.1007/s00604-019-3495-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Arrays of molybdenum(IV) disulfide nanosheets resembling the shape of golf balls (MoS2 NSBs) were deposited on carbon nanofibers (CNFs), which are shown to enable superior electrochemical detection of dopamine without any interference by uric acid. The MoS2 NSBs have a diameter of approximate to 2m and are made up of numerous bent nanosheets. MoS2 NSBs are connected by the CNFs through the center of the balls. Figures of merit for the resulting electrode include (a) a sensitivity of 6.24AM(-1)cm(-2), (b) a low working voltage (+0.17V vs. Ag/AgCl), and (c) a low limit of detection (36nM at S/N=3). The electrode is selective over uric acid, reproducible and stable. It was applied to the determination of dopamine in spiked urine samples. The recoveries at levels of 10, 20 and 40 M ofDA are 101.6, 99.8 and 107.8%.

引用

页数：7

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