Novel light-triggered antibacterial mask and preparation method thereof

The invention discloses a novel light-triggered antibacterial mask for in-situ growth of g-C3N4 and a preparation method of the novel light-triggered antibacterial mask, and belongs to the field of medical protection. The protective mask provided by the invention is composed of three layers of non-woven fabrics and a layer of carbon fiber cloth loaded with Ag/g-C3N4/Ag3PO4. The mask has double effects of blocking and killing bacteria, can be repeatedly used, and is safe and non-toxic. The preparation method of the antibacterial layer comprises the following steps: (1) soaking carbon fiber cloth in an AgNO3 solution, and then soaking the carbon fiber cloth in a Na2HPO4 solution, so that Ag-containing micro-nano particles are loaded on the carbon cloth; (2) grinding urea, then loading the ground urea into a ceramic boat, placing the carbon fiber cloth loaded with the Ag-containing micro-nano particles above the ceramic boat by using a net, and placing the ceramic boat into a tubular furnace for heating; and (3)