The invention discloses a two-dimensional
titanium dioxide
nanosheet catalytic material and a preparation method thereof. The thickness of the two-dimensional
titanium dioxide
nanosheet catalytic material is 3-10 nm, and the length of the two-dimensional
titanium dioxide
nanosheet catalytic material is 10-50 microns. The preparation method comprises the following steps: adding
graphene oxide intoabsolute ethyl
alcohol, and uniformly carrying out dispersing to obtain a
graphene dispersion solution; adding tetrabutyl
titanate into the
graphene dispersion solution, and uniformly carrying out stirring; carrying out centrifuging, washing and
drying on the
mixed solution; and calcining the product to obtain an unmodified
titanium dioxide nanosheet, adding the unmodified
titanium dioxide nanosheet and
ascorbic acid into deionized water, uniformly carrying out stirring, carrying out heating and reacting to obtain a brown initial product, and calcining the brown initial product to obtain the
titanium dioxide nanosheet photocatalytic material. According to the method, firstly, ultra-thin two-dimensional TiO2 is prepared through a GO template method, and then reduction modification is carried out on the ultrathin two-dimensional TiO2 through the
ascorbic acid, so that defects are introduced, and photocatalytic performance of the ultra-thin two-dimensional TiO2 is improved, namely, performance of
hydrogen production by water photolysis of the ultra-thin two-dimensional TiO2 is greatly improved through great modification of the ultra-thin two-dimensional TiO2.