Preparation method of spiral titanium dioxide (TiO2) nano wire doped with silver/silver chloride (Ag/AgCl)

Abstract

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.

Description

technical field [0001] The present invention relates to TiO 2 The technical field of nanomaterials, in particular to a helical TiO doped with Ag / AgCl 2 Methods of preparing nanowires. Background technique [0002] Water is the basic element for the survival of human beings and all living things, and it is also an indispensable resource for safeguarding industry and agriculture and maintaining the health of natural ecology. The total amount of water resources remains unchanged in the natural cycle, but its water quality undergoes complex changes. Only when the water quality meets the necessary requirements can it become a usable water resource. With the increase of population, the development of industrial and agricultural production, and the increasingly serious pollution of water environment, the available water resources in many areas are in crisis one after another, seriously restricting the development of society and economy. The water crisis and its derived water qua...

AI Technical Summary

Problems solved by technology

But this material also has some disadvantages that limit its wide application, one of which is TiO 2 The quantum yield is low, which will limit the exchange speed of its electrons and holes, thus reducing the speed of its photocatalytic degradation of organic pollutants, which also greatly affects its use as a new type of catalytic material. Low catalytic efficiency under visible light

Images