[1]何传新,任圣颖,谢敏随,等.基于Fe3O4-PEI纳米粒子构建葡萄糖传感器的研究[J].深圳大学学报理工版,2015,32(No.1(001-110)):76-81.[doi:10.3724/SP.J.1249.2015.01076]
 He Chuanxin,Ren Shengying,Xie Minsui,et al.Glucose sensor based on Fe3O4-PEI nanoparticles[J].Journal of Shenzhen University Science and Engineering,2015,32(No.1(001-110)):76-81.[doi:10.3724/SP.J.1249.2015.01076]
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基于Fe3O4-PEI纳米粒子构建葡萄糖传感器的研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第32卷
期数:
2015年No.1(001-110)
页码:
76-81
栏目:
材料科学
出版日期:
2015-01-20

文章信息/Info

Title:
Glucose sensor based on Fe3O4-PEI nanoparticles
文章编号:
201501010
作者:
何传新任圣颖谢敏随袁安朋洪飞张黔玲刘剑洪
深圳大学化学与化工学院,深圳 518060
Author(s):
He Chuanxin Ren Shengying Xie Minsui Yuan Anpeng Hong Fei Zhang Qianling and Liu Jianhong
College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, P.R.China
关键词:
高分子化学葡萄糖传感器磁性纳米粒子聚乙烯亚胺葡萄糖氧化酶静电作用
Keywords:
polymer chemistry glucose sensor magnetic nanoparticles polyethyleneimine glucose oxidase electrostatic interaction
分类号:
O 63
DOI:
10.3724/SP.J.1249.2015.01076
文献标志码:
A
摘要:
采用共沉淀法制备核层为四氧化三铁(Fe3O4)壳层为聚乙烯亚胺(polyethyleneimine, PEI)的磁性复合纳米粒子Fe3O4-PEI.扫描电子显微镜和透射电子显微镜表征结果显示,制备的磁性复合纳米粒子Fe3O4-PEI粒径均匀,直径约为25 nm. 通过振动样品磁强计比较Fe3O4-PEI和Fe3O4纳米粒子的磁滞回线,结果表明,经PEI包覆后复合纳米粒子饱和磁化值为38.2 emu/g,仍具有较好的磁性. 热重分析表明,包覆在Fe3O4纳米粒子表面的PEI质量分数约为23.26%.通过静电作用,实现了Fe3O4-PEI复合纳米粒子对葡萄糖氧化酶的负载,以铂电极为基底电极,制备了Fe3O4-PEI-GOx/Pt葡萄糖传感器. 在最优测试条件下,该修饰电极对葡萄糖表现出优异的电化学催化性能,具有灵敏度高、抗干扰能力强、稳定性好的特点.
Abstract:
Fe3O4-PEI nanoparticles with Fe3O4 core and polyethylenimine (PEI) shell were prepared via the co-precipitation method. Results from scanning electron microscope (SEM) and transmission electron microscope (TEM) show that Fe3O4-PEI nanoparticles present globular shape with almost uniform diameters of about 25 nm. Magnetic hysteresis loops of Fe3O4-PEI and Fe3O4 nanoparticles were obtained by a vibrating sample magnetometer (VSM). The magnetism of Fe3O4 nanoparticles still remains a lot after coating with PEI, and the saturation magnetization value of Fe3O4-PEI nanoparticles is 38.2 emu/g. Thermogravimetry (TG) analysis indicats that the loading amount of PEI on the surface of Fe3O4 nanoparticles is about 23.26%. The glucose oxidase (GOx) enzyme was immobilized on the Fe3O4-PEI nanoparticles surface by electrostatic interaction. Fe3O4-PEI-GOx/Pt glucose sensor was prepared with platinum (Pt) as its basal electrode, which exhibits a good electrochemical catalysis for glucose, high sensitivity, strong anti-interference ability and long-term durability for glucose detection under an optimal preparation condition.

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备注/Memo

备注/Memo:
Received:2014-08-14;Accepted:2014-10-19
Foundation:National Natural Science Foundation of China (21374064, 21004040)
Corresponding author:Associate professor He Chuanxin. E-mail:hechuanxin2002@163.com; Professor Liu Jianhong. E-mail: Liujh@szu.edu.cn
Citation:He Chuanxin, Ren Shengying, Xie Minsui, et al. Glucose sensor based on Fe3O4-PEI nanoparticles[J]. Journal of Shenzhen University Science and Engineering, 2015, 32(1): 76-81.(in Chinese)
基金项目:国家自然科学基金资助项目(21374064,21004040)
作者简介:何传新(1983—),男(汉族),安徽省宣城市人,深圳大学副教授、博士.E-mail:hechuanxin2002@163.com
引文:何传新,任圣颖,谢敏随,等. 基于 Fe3O4-PEI纳米粒子构建葡萄糖传感器的研究[J]. 深圳大学学报理工版,2015,32(1):76-81.
更新日期/Last Update: 2015-01-05