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AssigneeYunnan Tobacco Quality Supervision and Testing Station
InventorsDan Chen, Yaling Yang, Huimin Deng, Chunqiong Wang, Li Chen, Yifan Cui, Ke Zhang, Shichun Qin, Yuemao Wang, Xiaodong Hu, Xiaodong Yin, Yunfang Zhao, Lijuan Peng, Jie Long, Jieyun Cai, Haowei Sun, Dan Li
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A nanozyme material and a preparation method thereof are provided. In the preparation method, Prussian blue (PB) is used to regulate the peroxidase activity of Fe,NA/CDs, and then gold nanoparticles are synthesized with Fe,NA/CDs as a reducing agent and a stabilizing agent. The nanozyme material has both a peroxidase activity and a Raman enhancement effect, which can be used for nanozyme-based surface-enhanced Raman spectroscopy (SERS). An embodiment of the present disclosure also provides a method for rapidly detection of a Pb2+ ion, which is based on a color change or an additional Raman SERS signal generation caused by nanozyme oxidation. Such sensing signals (colorimetric and SERS analysis) are derived from a catalytic oxidation reaction of ABTS or TMB, while the presence of Pb2+ specifically inhibits the oxidation, such that the rapid detection of Pb2+ can be achieved.
A preparation method of a nanozyme material, wherein the nanozyme material is Fe, norepinephrine (NE)/CDs-Prussian blue (PB) @AuNPs, and the nanozyme material comprises iron-doped norepinephrine carbon dots Fe (NE)/CDs, a Prussian blue (PB) loaded on the iron-doped norepinephrine carbon dots Fe (NE)/CDs, and AuNPs distributed on a surface of the iron-doped norepinephrine carbon dots Fe, (NE)/CDs, and wherein the method comprises:
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