The invention discloses a preparation method of a spiral
titanium dioxide (TiO2) nano wire doped with silver /
silver chloride (Ag / AgCl). The preparation method comprises the following steps of 1) dissolving C18-D-Glu in a
mixed solution of
methanol and water; 2) adding isopropoxy
diacetyl titanium acetone into the
mixed solution, stirring for 2h at the temperature of 55 DEG C; 3) centrifugally separating the
mixed solution to obtain
colloid, and freeze-
drying the
colloid to obtain faint yellow
powder; 4) calcinating the faint yellow
powder at the temperature of 550 DEG C for 6h to obtain a spiral TiO2 nano wire; 5) mixing the spiral TiO2 nano wire, cetyl trimethylammonium
chloride and water and stirring for 1h; 6) adding the
silver nitrate (AgNO3) and stirring for 1h, and continuously stirring the mixture for 1h under the
radiation of a 8W
ultraviolet lamp; 7) centrifugally separating the mixture and
drying at the temperature of 80 DEG C for 8h to obtain brown
powder; and 8) calcinatinng the brown powder for 6h at the temperature of 300 DEG C to obtain the spiral TiO2 nano wire doped with the Ag / AgCl. Due to the adoption of the preparation method, the
quantum yield of the TiO2 is greatly improved, and the process for photocatalytically degrading organic pollutants by utilizing TiO2 can be accelerated. Compared with the ordinary P25, the spiral
titanium dioxide (TiO2) nano wire doped with silver /
silver chloride (Ag / AgCl) has the
advantage that the speed for degrading the
pollutant with the same concentration can be improved by ten times; the
catalysis efficiency under the visible light is high, and the catalytic degrading speed is high.