Method for synthesizing water-solubility fluorescence silver nanocluster by electrochemistry

A method for synthesizing water-solubility fluorescence silver nanocluster by electrochemistry comprises the following steps: (1) preparing coordination agent, mass percentage concentration of the coordination agent in solution is 0.35% to 2%; (2) using acid solution to adjust potential of hydrogen (PH) of reaction system to be 6 to 8; and (3) using two pure silver bars as electrodes, interval between the electrodes are 8mm to 10mm, enabling direct current stabilized power supply to be conducted electrolytic reaction for 2min to 10min and obtaining fluorescence silver nanocluster water solution, wherein the reaction voltage is 4V to 8V. The method for synthesizing the water-solubility fluorescence silver nanocluster by the electrochemistry has the advantages of being simple in operation, easy to control, low in cost, fast in synthesizing, environment-friendly, and the like. The prepared water-solubility silver nanocluster has a fluorescence characteristic.