A novel glucose biosensor constructed by glucose oxidase immobilized with methylene blue intercalated layered lanthanum niobic acid nanocomposite

被引：15
|
作者：
Zhang, Xiaobo [1 ,2 ,3 ]
Shen, Liqun [1 ,3 ]
Wang, Mingyan [1 ,3 ]
Siqin, Gaowa [1 ,3 ]
Tong, Zhiwei [1 ,2 ,3 ]
Xu, Ruibo [1 ,3 ]
Zhang, Dongen [1 ,3 ]
Ma, Juanjuan [1 ,3 ]
Liu, Lin [1 ,3 ]
机构：
[1] Huaihai Inst Technol, Dept Chem Engn, Lianyungang 222005, Peoples R China
[2] Jiangsu Inst Marine Resources Res & Dev, Nanjing, Jiangsu, Peoples R China
[3] Japan Sci & Technol, SORST, Tokyo, Japan
来源：
MATERIALS LETTERS | 2014年 / 135卷
基金：
中国国家自然科学基金;
关键词：
Methylene blue; KLaNb2O7; Nanocomposites; Electrical properties; Glucose; Biosensor; EXHIBITING ION-EXCHANGE; MODIFIED ELECTRODE; HYDROGEN-PEROXIDE; BEHAVIOR;
D O I：
10.1016/j.matlet.2014.07.123
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cationic methylene blue (MB) was intercalated into layered semiconductor KLaNb2O7 for the first time by the ion-exchange method. MB+ forms an inclined monolayer between LaNb2O7- nanosheets and the nanocomposite exhibited a pair of characteristic redox peaks of MB+ cation. The nanocomposite was proved to be capable of immobilizing glucose oxidase (GOD) and facilitate catalytic activities of GOD. The MB+-LaNb2O7/GOD/CTS/GCE biosensor we constructed showed high electrochemical catalytic activities towards oxidation of glucose with the existence of oxygen. The biosensor had a linear range on detection of glucose from 2.5 x 10(-5) M to 2.83 x 10(-3) M and a detection limit of 2.0 x 10(-3) M. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：39 / 42
页数：4
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