光照纳米银颗粒对葡萄糖生物传感器响应电流的抑制

doi:10.7517/j.issn.1674-0475.2009.06.401

影像科学与光化学 ›› 2009, Vol. 27 ›› Issue (6): 401-408.DOI: 10.7517/j.issn.1674-0475.2009.06.401

• 研究论文 • 下一篇

光照纳米银颗粒对葡萄糖生物传感器响应电流的抑制

马士禹^1,2, 曲艺², 穆劲¹, 王国军², 江龙³

1. 华东理工大学化学系, 上海200237;
2. 华东师范大学化学系, 上海200062;
3. 中国科学院化学研究所, 北京100190

收稿日期:2009-03-31 修回日期:2009-04-27 出版日期:2009-11-23 发布日期:2009-11-23
通讯作者: 穆劲,Tel: 021-64252214;Fax: 021-64252485,E-mai: ljinmu@ecust.edu.cn.

Inhibition of Photo-Induced Silver Nanoparticles to Response Current of Glucose Biosensor

MA Shi-yu^1,2, QU Yi², MU Jin¹, WANG Guo-jun², JIANG Long³

1. Department of Chemistry, East China University of Science and Technology, Shanghai 200237, P. R. China;
2. Department of Chemistry, East China Normal University, Shanghai 200062, P. R. China;
3. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China

Received:2009-03-31 Revised:2009-04-27 Online:2009-11-23 Published:2009-11-23

摘要/Abstract

摘要： 采用纳米银-壳聚糖复合膜固定葡萄糖氧化酶,构建葡萄糖生物传感器.利用计时电流法对不同光照时间纳米银颗粒组装的酶电极响应电流进行了表征.实验结果表明,光照纳米银颗粒可以抑制葡萄糖生物传感器的响应电流;随着光照时间的延长,纳米银颗粒的抑制作用逐渐增强,当光照时间达到120min时,葡萄糖生物传感器的响应电流最小(-3.953μA/cm²).葡萄糖生物传感器响应电流的抑制可能是由纳米银颗粒表面的Ag⁺离子浓度及表面性能的变化引起的.

关键词: 纳米银颗粒, 光照, 葡萄糖氧化酶, 响应电流, 抑制

Abstract: The silver nanoparticle/chitosan composite matrix was developed to fabricate the glucose biosensor. The response current of the enzyme electrode containing AgNPs photo-induced at different time was characterized by chronoamperometry. The experimental results indicated that the response current of the glucose biosensor was inhibited by the photo-induced silver nanoparticles. The inhibitory effect of silver nanoparticles enhanced along with the photo-induced time. When the photo-induced time of silver nanoparticles was 120 min,the response current of the glucose biosensor reached the minimum value,-3.953 μA/cm². The inhibition of response current of the glucose biosensor is probably due to the change of Ag⁺ ions concentration and the new surface formation of silver nanoparticles.

Key words: silver nanoparticle, illumination, glucose oxidase, response current, inhibition

中图分类号:

马士禹, 曲艺, 穆劲, 王国军, 江龙. 光照纳米银颗粒对葡萄糖生物传感器响应电流的抑制[J]. 影像科学与光化学, 2009, 27(6): 401-408.

MA Shi-yu, QU Yi, MU Jin, WANG Guo-jun, JIANG Long. Inhibition of Photo-Induced Silver Nanoparticles to Response Current of Glucose Biosensor[J]. Imaging Science and Photochemistry, 2009, 27(6): 401-408.

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光照纳米银颗粒对葡萄糖生物传感器响应电流的抑制

Inhibition of Photo-Induced Silver Nanoparticles to Response Current of Glucose Biosensor

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