| abstract |
The invention provides a collagen TiO2 composite catalyst and a preparation method thereof. The collagen TiO 2 composite catalyst is a nano-particle composite catalyst obtained by using collagen as a carrier and carrying nano-scale titanium dioxide active components. The preparation method includes: degreasing the cleaned pig skin, and removing impurities after the degreasing is completed; enzymatic hydrolysis of the pig skin with the impurities removed, and filtering after the enzymatic hydrolysis; salting out the filtrate, and centrifuging the filtrate after the salting to obtain collagen Crude extract; the crude collagen extract was dialyzed with acetic acid solution and ultrapure water in turn, and then freeze-dried to obtain pure collagen; nanoscale titanium dioxide samples were prepared with tetrabutyl titanate and dilute acid as raw materials; The pure product is dissolved in acetic acid solution, and nano-scale titanium dioxide sample is added, ultrasonically dispersed, impregnated, and then dried, crushed, calcined and crushed in turn to obtain a collagen TiO 2 composite catalyst. |