作者
Tai-Ping Sun, Hsiu-Li Shieh, Congo Tak-Shing Ching, Yan-Dong Yao, Su-Hua Huang, Chia-Ming Liu, Wei-Hao Liu, Chung-Yuan Chen
发表日期
2010/5/13
期刊
International journal of nanomedicine
页码范围
343-349
出版商
Taylor & Francis
简介
This study aims to develop an amperometric glucose biosensor, based on carbon nanotubes material for reverse iontophoresis, fabricated by immobilizing a mixture of glucose oxidase (GOD) and multiwalled carbon nanotubes (MWCNT) epoxy-composite, on a planar screen-printed carbon electrode. MWCNT was employed to ensure proper incorporation into the epoxy mixture and faster electron transfer between the GOD and the transducer. Results showed this biosensor possesses a low detection potential (+500 mV), good sensitivity (4 μA/mM) and an excellent linear response range (r2 = 0.999; 0–4 mM) of glucose detection at +500 mV (versus Ag/AgCl). The response time of the biosensor was about 25 s. In addition, the biosensor could be used in conjunction with reverse iontophoresis technique. In an actual evaluation model, an excellent linear relationship (r2 = 0.986) was found between the glucose …
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