Tin disulfide nanorod-graphene-β-cyclodextrin nanocomposites for sensing dopamine in rat brains and human blood serum

被引：35
作者：
Balu, Sridharan [1 ]
Palanisamy, Selvakumar [2 ,3 ]
Velusamy, Vijaylakshmi [3 ]
Yang, Thomas C. K. [1 ,2 ]
El-Shafey, El-Said I. [4 ]
机构：
[1] Natl Taipei Univ Technol, Dept Chem Engn & Biotechnol, 1,Sect 3,Chung Hsiao East Rd, Taipei, Taiwan
[2] Natl Taipei Univ Technol, Precis & Mat Res Ctr, 1,Sect 3,Chung Hsiao East Rd, Taipei, Taiwan
[3] Manchester Metropolitan Univ, Sch Engn, Div Elect & Elect Engn, Chester St, Manchester M1 5GD, Lancs, England
[4] Sultan Qaboos Univ, Coll Sci, Chem Dept, POB 36, Muscat 123, Oman
来源：
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2020年 / 108卷
关键词：
Graphene nanocomposite; SnS2; nanorods; Sonochemical method; Dopamine; Guest-host chemistry; Biosensor; GLASSY-CARBON ELECTRODE; SELECTIVE ELECTROCHEMICAL DETERMINATION; MICROWAVE-ASSISTED SYNTHESIS; PERFORMANCE ANODE MATERIALS; ASCORBIC-ACID; LITHIUM-ION; URIC-ACID; GOLD NANOPARTICLES; SENSITIVE DETECTION; GRAPHITE COMPOSITE;
D O I：
10.1016/j.msec.2019.110367
中图分类号：
TB3 [工程材料学]; R318.08 [生物材料学];
学科分类号：
0805 ; 080501 ; 080502 ;
摘要：
In the present work describes a facile synthesis of tin disulfide (SnS2) nanorods decorated graphene-beta-cyclodextrin (SnS2/GR-beta-CD) nanocomposite for robust and novel dopamine (DA) electrochemical biosensor applications. The DA biosensor was fabricated using the glassy carbon electrode (GCE) modified with SnS2/GR-beta-CD nanocomposite. The sonochemical and hydrothermal methods have been used for the synthesis of SnS2/GR-beta-CD. Different physicochemical methods were used to confirm the formation of the GR-beta-CD, SnS2, and SnS2/GR-beta-CD nanocomposite. The cyclicvoltammetric cathodic current response of DA was 5 folds higher than those observed at bare, beta-CD, SnS2-beta-CD, and GR-beta-CD modified GCEs. Under optimised conditions, the biosensor's DPV response current is linear to DA from the concentration of 0.01-150.76 mu M. The detection limit of the biosensor was 4 nM. The SnS2/GR-D-CD biosensor shows an excellent selectivity towards DA in the presence of common interfering species, including ascorbic acid and uric acid. Also, the as-prepared nanocomposite-modified electrode exhibited satisfactory long-term stability, sensitivity (2.49 mu A mu M-1 cm(-2)) along with reusability for detection of DA. The fabricated SnS2/GR-beta-CD biosensor was successfully used for the detection of DA in the rat brain and human blood serum samples.
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页数：10
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