The invention relates to a novel ZnIn2S4 / NH2-MIL-125(Ti) composite visible-light catalyst and belongs to the technical field of
photocatalysis. The novel ZnIn2S4 / NH2-MIL-125(Ti) composite visible-light catalyst is characterized in that ZnIn2S4 is
nanosheet-shaped and is uniformly distributed on the surface of lumpy NH2-MIL-125(Ti), and the
mass percent of the NH2-MIL-125(Ti) is 20.0% to 6.0%. A preparation method comprises the steps: (1) dissolving a certain amount of tetrabutyl
titanate and 2-amino
terephthalic acid in a mixture solution of N,N-
dimethylformamide and
methanol, and carrying out a crystallizing reaction for 48 hours in an
autoclave at the temperature of 150 DEG C, so as to obtain the NH2-MIL-125(Ti); (2) dispersing the synthesized NH2-MIL-125(Ti) into a certain volume of
ethanol in an
ultrasonic dispersion manner, then, sequentially adding a certain amount of propanetriol,
indium chloride,
zinc chloride and
thioacetamide into the dispersion while carrying out stirring, carrying out a crystallizing reaction for 10 hours in an
autoclave at the temperature of 180 DEG C to 200 DEG C so as to obtain a
solid product, and subjecting the obtained
solid product to filtrating, washing and
drying, thereby obtaining the ZnIn2S4 / NH2-MIL-125(Ti) composite visible-light catalyst. The preparation method of the composite visible-light catalyst is environmentally-friendly and is simple in process. The prepared composite catalyst has very high visible-light catalytic activity and has a potential application value in photocatalytic
hydrogen production using
solar energy.