An enzyme-free glucose sensing device based on TiO2 nanorod array photoelectric catalysis

被引:5
|
作者
Su, Anna [1 ]
Lei, Qiumei [1 ]
Tian, Gaoqi [1 ]
Yang, Yaolan [1 ]
He, Shuqing [1 ,3 ]
Yan, Li [1 ]
Hu, Xin [1 ]
Ji, Tao [1 ]
Li, Shijie [2 ]
Hu, Junqing [1 ,3 ]
机构
[1] Shenzhen Technol Univ, Coll Hlth Sci & Environm Engn, Shenzhen 518118, Peoples R China
[2] Zhejiang Ocean Univ, Inst Innovat & Applicat, Natl Engn Res Ctr Marine Aquaculture, Zhoushan 316022, Zhejiang, Peoples R China
[3] Shenzhen Bay Lab, Shenzhen 518132, Peoples R China
基金
中国国家自然科学基金;
关键词
Glucose; TiO2; Enzyme-free; Photocatalysis; Electrochemical biosensor; WATER; SENSOR; DEGRADATION; PERFORMANCE; HYDROGEL; CLEAVAGE; SYSTEM; DOTS;
D O I
10.1016/j.cjsc.2023.100133
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A simple one-step hydrothermal method is used to prepare an enzyme-free photoelectric combined glucose sensor based on TiO2NRs/FTO with low cost, sample two-electrode, and excellent detection. Under 380 nm light (0.5 mW cm-2) irradiation and a positive voltage, holes are accumulated on TiO2NRs surface, catalyzing glucose and forming a photocurrent without the need for an enzyme, such as Glucose oxidase (GOx). The designed sensor exhibits high sensitivity (about 0.96 mu A mM-1 cm-2, without GOx) and excellent linear relationship in the glucose concentration range of 5-15 mML-1. The prepared glucose sensor performs better with a sensitivity of 1.48 mu A mM-1 cm-2 when a certain amount of GOx is mixed in the detected solution. In addition, the sensor has excellent anti-interference resistance to non-reducing chitosan and reducing ascorbic acid with short response time (less than 5 s); thus, it can be used in quick detection with a double electrode system. This sensing device has the advantages of simple fabrication, easy storage, and reusability; therefore, it can be very promising in the portable and rapid monitoring of human blood glucose levels.
引用
收藏
页数:8
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