▎ 摘　　要

NOVELTY - A preparation of boron-doped graphene nanocomposite titanium dioxide (TiO2) photocatalyst comprises graphene oxide, gas phase TiO2 as the precursor, and ultrasonography specifically comprising dispersing aqueous graphene oxide in pure water, ultrasonic mixing; adding boric acid, stirring, evaporating to dryness; redispersing in pure water, ultrasonic treatment for 10 hours; adding hydrochloric acid solution, stirring, washing samples, immersing boron-doped graphene tablets in pure water, ultrasonic mixing for 1 hour, adding gas phase TiO2, stirring for 5 hours, drying solution and grinding. USE - Method for preparation of boron-doped graphene nanocomposite photocatalyst (claimed). ADVANTAGE - The boron doped graphene nano sheet has smaller size and better dispersibility. The exposed edges can promote P25 nanoparticle loaded on the graphene nanosheet. Boron doped graphene nano sheet has stronger the photo generated electron ability and electronic transmission capability and has better photocatalytic reduction of carbon dioxide. DETAILED DESCRIPTION - A preparation of boron-doped graphene nanocomposite titanium dioxide (TiO2) photocatalyst comprises graphene oxide, gas phase P25 (RTM: nano titanium dioxide) as the precursor, using low temperature vacuum reduction with ultrasonography for preparing thick ferroelectric-ferromagnetic composite film specifically comprising preparing boron doped graphene nanosheets from aqueous solution of graphene oxide, dispersing with pure water, and ultrasonic dispersion for 1 hour; adding boric acid, magnetic stirring for 1 hour at 60 degrees C, evaporating to dryness; drying sample after vacuum reduction at 300 degrees C for 3 hours, re-dispersing with pure water, and ultrasonic treatment for 10 hours; adding hydrochloric acid solution, stirring for 15 hours, washing samples 4 times using pure water obtaining the boron doped graphene nano sheet, immersing boron-doped graphene tablets in pure water, ultrasonic dispersion for 1 hour, adding gas phase titanium dioxide, mechanically stirring for 5 hours, drying solution at 80 degrees C and grinding it to obtain boron-doped graphene nano sheet composite TiO2 photocatalyst.