期刊
LANGMUIR
卷 30, 期 37, 页码 11131-11137出版社
AMER CHEMICAL SOC
DOI: 10.1021/la503104x
关键词
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资金
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
- Base of Natural Science Foundation of Jiangsu Province of China [BK 20131396]
- Natural Science Foundation of Universities of Jiangsu Province [14KJA150006]
- production, education and research of prospective joint research project of Jiangsu Province [BY2011109]
In this work, three kinds of nanostructured silica-phytic acid (SiO2-PA) materials with diverse morphologies including spherical SiO2-PA (s-SiO2-PA), rod-like (r-SiO2-PA), and helical SiO2-PA (h-SiO2 PA) were prepared with the help of electrostatic interaction. The SiO2-PA nanomaterials with different morphologies were characterized by using transmission electron microscopy (TEM), Fourier transform infrared (FTIR), electrochemical impedance spectroscopy (EIS), and circular dichroism spectrum (CD). Diverse morphologies of SiO2-PA were used as electrode decorated materials to achieve a high efficiency for electrochemical dopamine (DA) detection. The laccase biosensors were fabricated by immobilizing different morphologies of SiO2-PA nanomaterials and laccase onto the glassy carbon electrode (GCE) surface, successively. Then the electrochemical responses of the different morphologies of nanostructured SiO2-PA nanomaterials to laccase were discussed. Results indicated that compared to laccase/s-SiO2-PA and laccase/r-SiO2 PA, the laccase/h-SiO2-PA-modified electrode showed the best electrochemical performances.
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