Titanium Silicate-1 (TS-1) has been successfully modified by combining Silver (Ag) metals. In this study. the preparation of Ag/TS-1 was carried out by impregnation method using a solution of silver nitrate (AgNO3) as a precursor to TS-1 with a loading variation of 0. 5%. https://parisnaturalfoodes.shop/product-category/vitamin-b12-cyanocobalamin-1000mcg/