文献类型： 外文期刊
作者： Wu, Lidong 1 ; Xu, Zhiyuan 3 ; Meng, Qingyi 3 ; Xiao, Yushi 1 ; Cao, Qiang 1 ; Rathi, Brijesh 4 ; Liu, Huan 1 ; Han, Gang 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Key Lab Control Qual & Safety Aquat Prod, Beijing 100141, Peoples R China
2.Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 201306, Peoples R China
3.North China Univ Technol, Coll Informat, Beijing 100043, Peoples R China
4.Hansraj Coll Univ Delhi, Dept Chem, Delhi 110007, India
关键词： The CYS-BP-AuNP nanocomposite; Aptamer; Malachite green; Portability; Interdigital electrode
期刊名称：ANALYTICA CHIMICA ACTA （ 影响因子：6.558； 五年影响因子：6.228 ）
ISSN： 0003-2670
年卷期： 2020 年 1099 卷
页码：
收录情况： SCI
摘要： Malachite Green (MG), a cationic triphenylmethane dye, has adverse effects on the immune and reproductive system. Thus, it is essential to develop a rapid, sensitive and high-selective method for determination of MG. Black phosphorus (BP) has high charge-carrier mobility (similar to 1000 cm(2) V-1 s(-1)) and high adsorption capacity for cationic dyes (i.e. MG) through both electrostatic and hydrophobic interactions. Thus, it potentially plays as a high-sensitive sensing platform for detecting MG. However, BP degrades within 12 h under humid condition, which limits its applications. To overcome this issue, cysteine (CYS) is used for protecting BP from oxidation and ceasing its degradation. To the best of our knowledge, it is the first time that CYS is used to functionalize BP, and a silicon interdigital electrode is fabricated with the functionalized BP and aptamer. The BP-based interdigital electrode shows a lowest detection limit of 0.3 ng L-1 toward MG. This work provides a new route to prepare a large scale and selective biosensor for MG monitoring on site in future. (C) 2019 Elsevier B.V. All rights reserved.
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