Noble metal silver deposition-polypyrrole sensitization hollow titanium dioxide nano photocatalyst and preparation method thereof
A nano-photocatalyst and titanium dioxide technology, which is applied in the field of preparation of new photocatalytic materials, can solve the problems that have not been seen and limit the application of industrialization, and achieve the effect of low cost, simple preparation and cost reduction
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Embodiment 2
[0024] 1) Prepare carbon spheres by hydrothermal synthesis of 0.15 g / ml glucose solution at a hydrothermal temperature of 180 °C for 8 h;
[0025] 2) Hydrolyze butyl titanate into titanium dioxide sol by sol-gel method, and load it on the surface of carbon spheres prepared in step 1) by stirring, the mass ratio of butyl titanate to carbon spheres is 10:1, prepare C / titanium dioxide microspheres;
[0026] 3) Calcining the C / titanium dioxide microspheres prepared in step 2) at 350 °C for 2 h to obtain hollow titanium dioxide microspheres;
[0027] 4) Add silver nitrate to the solution of hydrochloric acid with a concentration of 1 mol / l to oxidize pyrrole, and finally produce polypyrrole and silver by chemical in situ polymerization, and load the reaction product into the hollow titanium dioxide microstructure prepared in step 3) by stirring. On the surface of the sphere, the molar ratios of pyrrole and hollow titanium dioxide microspheres in the synthesis system, pyrrole and ...
Embodiment 3
[0029] 1) Prepare carbon spheres by hydrothermal synthesis of 0.5 g / ml glucose solution at a hydrothermal temperature of 180 °C for 8 h;
[0030] 2) Hydrolyze butyl titanate into titanium dioxide sol by sol-gel method, and load it on the surface of carbon spheres prepared in step 1) by stirring, the mass ratio of butyl titanate to carbon spheres is 10:1, prepare C / titanium dioxide microspheres;
[0031] 3) Calcining the C / titanium dioxide microspheres prepared in step 2) at 450°C for 2 h to obtain hollow titanium dioxide microspheres;
[0032] 4) Add silver nitrate to the solution with a hydrochloric acid concentration of 1.5 mol / l to oxidize pyrrole, and finally produce polypyrrole and silver by chemical in situ polymerization, and load the reaction product to the hollow titanium dioxide microstructure prepared in step 3) by stirring. On the surface of the sphere, the molar ratios of pyrrole and hollow titanium dioxide microspheres in the synthesis system, pyrrole and silve...
Embodiment 4
[0034] 1) Prepare carbon spheres by hydrothermal synthesis of 0.15 g / ml glucose solution at a hydrothermal temperature of 150 °C for 8 h;
[0035] 2) Hydrolyze butyl titanate into titanium dioxide sol by sol-gel method, and load it on the surface of carbon spheres prepared in step 1) by stirring, the mass ratio of butyl titanate to carbon spheres is 10:1, prepare C / titanium dioxide microspheres;
[0036] 3) Calcining the C / titanium dioxide microspheres prepared in step 2) at 450 °C for 2 h to obtain hollow titanium dioxide microspheres;
[0037] 4) Add silver nitrate to the solution with a hydrochloric acid concentration of 0.5 mol / l to oxidize pyrrole, and finally produce polypyrrole and silver as the product by chemical in situ polymerization, and load the reaction product into the hollow titanium dioxide microstructure prepared in step 3) by stirring. The surface of the sphere, the molar ratio of pyrrole and hollow titanium dioxide microspheres in the synthesis system, py...
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