Preparation of Pd/Bacterial Cellulose Hybrid Nanofibers for Dopamine Detection.
Preparation of Pd/Bacterial Cellulose Hybrid Nanofibers for Dopamine Detection.
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DOI：
10.3390/molecules21050618
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发表时间：
2016-05-11
期刊：
影响因子：
--
通讯作者：
Wei Q
中科院分区：
文献类型：
--
作者：
Li D;Ao K;Wang Q;Lv P;Wei Q
采用原位化学还原法制备了钯纳米粒子-细菌纤维素（PdBC）杂化纳米纤维。通过一系列分析技术对所获得的PdBC纳米纤维进行了表征。结果表明，Pd纳米粒子均匀地分散在BC纳米纤维表面。然后将PdBC纳米纤维与漆酶（Lac）和Nafion混合，得到混合悬浮液，并将其修饰在电极表面，构建新型生物传感平台。最后，将制备的电化学生物传感器用于多巴胺的检测。该传感器对多巴胺具有良好的电催化作用，灵敏度高（38.4 μA·mM−1），检测限低（1.26 μM），线性范围宽（5-167 μM）。该生物传感器具有良好的重复性、重现性、选择性和稳定性，并成功应用于人体尿液中多巴胺的检测，为多巴胺的临床分析提供了一种有前途的方法。
Palladium nanoparticle-bacterial cellulose (PdBC) hybrid nanofibers were synthesized by in-situ chemical reduction method. The obtained PdBC nanofibers were characterized by a series of analytical techniques. The results revealed that Pd nanoparticles were evenly dispersed on the surfaces of BC nanofibers. Then, the as-prepared PdBC nanofibers were mixed with laccase (Lac) and Nafion to obtain mixture suspension, which was further modified on electrode surface to construct novel biosensing platform. Finally, the prepared electrochemical biosensor was employed to detect dopamine. The analysis result was satisfactory, the sensor showed excellent electrocatalysis towards dopamine with high sensitivity (38.4 µA·mM−1), low detection limit (1.26 µM), and wide linear range (5–167 µM). Moreover, the biosensor also showed good repeatability, reproducibility, selectivity and stability and was successfully used in the detection of dopamine in human urine, thus providing a promising method for dopamine analysis in clinical application.
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