| abstract |
The present invention discloses a method for preparing a visible light-responsive composite photocatalyst supported with nano-gold porous hexagonal boron nitride, comprising the following steps: (1) preparation of porous boron nitride precursor, (2) preparation of porous boron nitride, ( 3) Preparation of sodium chloroaurate solution and sodium citrate solution, 4) Preparation of nano-gold/boron nitride composite photocatalytic material, weighing the porous boron nitride prepared in step (2) and the lemon prepared in step (3) The sodium chloroaurate solution is mixed evenly, placed in a 60°C water bath and stirred, and then the sodium chloroaurate solution prepared in step (3) is dropped into the above mixed solution at a constant speed, and stirred at a constant temperature for 2 to 4 h, filtered and dried. A nano-gold/boron nitride composite photocatalyst is obtained. The invention also discloses the application of the visible light-responsive composite photocatalyst loaded with nano-gold porous hexagonal boron nitride for photocatalytic reduction of p-nitrophenol. The composite catalyst prepared by the invention has the capability of efficiently reducing nitro pollutants under the response of visible light, the reaction rate is as high as 1.02 min -1 , and has good application prospect. |