Laser-induced noble metal nanoparticle-graphene composites enabled flexible biosensor for pathogen detection
Laser-induced noble metal nanoparticle-graphene composites enabled flexible biosensor for pathogen detection
复制标题
激光诱导的贵金属纳米颗粒-石墨烯复合材料使柔性生物传感器能够用于病原体检测
DOI：
10.1016/j.bios.2019.111896
复制
发表时间：
2020-02-15
影响因子：
12.6
通讯作者：
Ying, Yibin
中科院分区：
文献类型：
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作者：
You, Zhiheng;Qiu, Qiming;Ying, Yibin
贵金属纳米颗粒-三维石墨烯杂化纳米复合材料兼具纳米颗粒和石墨烯的优点，引起了人们的广泛兴趣。本文采用激光诱导法一步制备了多种贵金属纳米颗粒-三维石墨烯纳米复合材料。该纳米复合材料由涂覆有相应的金属吸附剂-壳聚糖水凝胶油墨的聚酰亚胺膜转化而来。这些纳米颗粒包括金纳米颗粒（AuNPs）、银纳米颗粒（AgNPs）和铂纳米颗粒（PtNPs），它们均匀地分布在多孔3D石墨烯的表面上。此外，我们还采用一步激光诱导法制备了AuNPs-3D石墨烯叉指阵列电极，并将其用于制备检测大肠杆菌O 157：H7的柔性阻抗免疫传感器。该免疫传感器具有检测限低、选择性好、灵敏度高等优点。
Noble metal nanoparticle-3D graphene hybrid nanocomposites possess the advantage of nanoparticles and graphene, which have attracted extensive interest. Here we developed a one-step laser induction method to prepare various noble metal nanoparticle-3D graphene nanocomposites. The nanocomposites were converted from polyimide film coated with the corresponding metal precursor-chitosan hydrogel ink. These nanoparticles including gold nanoparticles (AuNPs), silver nanoparticles (AgNPs), and platinum nanoparticles (PtNPs), were evenly distributed on the surface of porous 3D graphene. Furthermore, we prepared an AuNPs-3D graphene interdigitated array electrode using the one-step laser induction method, which was used to fabricate a flexible impedimetric immunosensor for the detection of Escherichia coli O157:H7. The immunosensor shows excellent performance including low detection limit, high selectivity, and great flexibility.