Method for rapidly synthesizing nanogold quantum dot through dual reducing agent at indoor temperature

The invention discloses a method for rapidly synthesizing a nanogold quantum dot through a dual reducing agent at the indoor temperature. The method comprises the steps that sodium citrate and ascorbic acid act on a chloroauric acid weak solution at the same time; and a reduction reaction of gold ions in the solution can be completed during tens of seconds, and the dimension of a product is approximately 1-30 nanometers. According to the rapid synthesis method for the nanogold quantum dot through the dual reducing agent at the indoor temperature, the particle dimension is small, the reaction is fast, the operation is simple and easy to control, the cost is low, and the method is a gold nanoparticle synthesis method.