Electrochemical biosensor based on CdS nanostructure surfaces.
Well-defined hexangularly faced CdS nanorod arrays have been grown directly on a conductive ITO glass via a facile one-step and non-template hydrothermal approach. Gold nanoparticles were decorated onto the nanorods to enhance the electron transfer process of electrode. Glucose oxidase (GOD) was then immobilized on the CdS through crosslinking with chitosan (CS), which resulted in a glucose biosensor with high enzyme loading and excellent sensitivity. Such a chitosan-encapsulated GOD-based biosensor revealed a relatively rapid response time of less than 50s, and an approximate linear detection range of glucose concentration, from 50 to 500 μmol L(-1) with a detection limit of 38 μmol L(-1) and an electrode sensitivity of 5.9 μA mM(-1).
State Key Laboratory of Bioelectronics (Chien-Shiung Wu Lab), School of Biological Science & Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096, PR China.
Jiqing
J
Qian
State Key Laboratory of Bioelectronics (Chien-Shiung Wu Lab), School of Biological Science & Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096, PR China; School of Geography and Biological Information, Nanjing University of Posts and Telecommunications, Nanjing 210046, PR China.
Shancheng
S
Yan
State Key Laboratory of Bioelectronics (Chien-Shiung Wu Lab), School of Biological Science & Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096, PR China. Electronic address: zdxiao@seu.edu.cn.
Zhongdang
Z
Xiao
D015374:Biosensing Techniques; D019187:Cadmium Compounds; D004563:Electrochemistry / Q000295:instrumentation*; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures; D018036:Selenium Compounds
D019187:Cadmium Compounds; D018036:Selenium Compounds; C058667:cadmium selenide