Au-TiO2 composite nanoparticle as well as preparation method and application thereof

Abstract

The invention discloses Au-TiO2 composite nanoparticles as well as a preparation method and application thereof, and belongs to the technical field of nano material preparation. The preparation and doping of titanium dioxide and gold NPs are integrated by adopting PLAL, so that the photocatalytic performance of titanium dioxide is effectively improved. Only laser is used in the whole preparation process, other chemical reagents are not involved, the preparation process is simpler, more convenient and more efficient, pollutants cannot be generated, and the environment-friendly requirement is met. Compared with other modification methods, local high temperature, high pressure and shock waves generated by laser plasma are utilized to enable the nanoparticles to collide with one another to form physical doping, that is, heat and force of laser are utilized to regulate and control the morphology and structure of the composite nanoparticles, the regulation and control means are simpler and more convenient, and the prepared composite nanoparticles are special in morphology and have good application prospects. The photocatalyst has a large number of active sites, and the photocatalytic efficiency of the photocatalyst on sewage can be effectively improved.

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