罗丹明6G
纳米棒
基质(水族馆)
分析物
纳米技术
材料科学
拉曼散射
沉积(地质)
检出限
生物传感器
拉曼光谱
化学工程
分子
化学
色谱法
有机化学
光学
古生物学
海洋学
物理
沉积物
地质学
生物
工程类
作者
Zhihua Wu,Dewei Zhao,Xin Han,Jichang Liu,Ying Sun,Yaogang Li,Yourong Duan
标识
DOI:10.1186/s12951-022-01756-4
摘要
Abstract Background Superhydrophobic substrate modifications are an effective way to improve SERS sensitivity by concentrating analyte molecules into a small surface area. However, it is difficult to manipulate low-volume liquid droplets on superhydrophobic substrates. Results To overcome this limitation, we deposited a hydrophilic Ti 3 C 2 T x film on a superhydrophobic ZnO nanorod array to create a SERS substrate with improved analyte affinity. Combined with its interfacial charge transfer properties, this enabled a rhodamine 6G detection limit of 10 −11 M to be achieved. In addition, the new SERS substrate showed potential for detection of biological macromolecules, such as microRNA. Conclusion Combined with its facile preparation, the SERS activity of ZnO/Ti 3 C 2 T x suggests it may provide an ultrasensitive environmental pollutant-monitoring and effective substrate for biological analyte detection. Graphical Abstract
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