Patent ID: 11965826
Assignee: JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. The method according to claim 1, wherein a method for preparing the silver-gold core-shell triangular nanosheet comprises the following steps: step (1) adding silver nitrate, sodium citrate and hydrogen peroxide to deionized water, stirring the solution, and then quickly adding NaBH4 with the stirring stopped, centrifuging the mixture after a certain period of time, and washing the residue to obtain a silver triangular nanosheet (Ag TNS) for later use; step (2) re-dispersing the Ag TNS in deionized water, adding PVP and ascorbic acid, and then sequentially adding a silver nitrate solution, a sodium citrate solution and a mixed solution of silver nitrate and sodium citrate dropwise, mixing the mixture well, centrifuging the mixture, and washing the residue with deionized water; and step (3) adding PVP, diethylamine, ascorbic acid and an aqueous gold-containing solution to precipitate a gold layer on the surface of the Ag TNS, and finally centrifuging the product, washing the product with deionized water to remove AgNO3 precipitate and residual PVP to obtain the silver-gold core-shell triangular nanosheet (Ag@Au TNS).