| abstract |
The invention discloses a preparation method of Ag/Cu alloy nano-cluster and its application in Ag + detection. The preparation method is to sequentially add D-penicillamine solution, AgNO 3 solution and Cu(NO 3 ) 2 solution into a container containing ultrapure water, and mix them evenly to obtain a mixture; the mixture is carried out with a magnetic stirrer. Stir, while irradiating with UV lamp for 4-10 h, the solution of DPA @ Ag/Cu alloy nanoclusters emitting yellow fluorescence is obtained. The preparation method of the invention has the advantages of low cost, simple operation, no toxic reagents, and more green environmental protection. In the present invention, the prepared DPA @ Ag/Cu NCs are used to construct a fluorescent sensor for detecting Ag + in water environment. The fluorescence quenching value and Ag + concentration showed a good linear relationship in the range of 0.01-800µM, and the detection selectivity and sensitivity were high, which had important practical application value. |