Preparation method of defective titanium dioxide/ultrathin carbon nitride/defective titanium dioxide Z-type heterojunction photocatalyst
The invention discloses a preparation method of a defective titanium dioxide/ultrathin carbon nitride/defective titanium dioxide Z-type heterojunction photocatalyst, and belongs to the field of photocatalytic water treatment. Comprising the following steps: 1, preparing TiO2 nanoparticles by a sol-g...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a preparation method of a defective titanium dioxide/ultrathin carbon nitride/defective titanium dioxide Z-type heterojunction photocatalyst, and belongs to the field of photocatalytic water treatment. Comprising the following steps: 1, preparing TiO2 nanoparticles by a sol-gel method; 2, carrying out secondary high-temperature calcination to obtain thin g-C3N4/; 3, carrying out ball milling and compounding to obtain TiO2-x/ultrathin g-C3N4/TiO2-x of a sandwich structure; and 4, carrying out solid-phase reduction to obtain the final defective titanium dioxide/ultrathin carbon nitride/defective titanium dioxide Z-type heterojunction photocatalyst. According to the preparation method of the defective titanium dioxide/ultrathin carbon nitride/defective titanium dioxide Z-type heterojunction photocatalyst, oxygen vacancies are introduced to broaden the light absorption range of the catalyst, a sandwich structure is constructed to increase space conduction and separation of photon-generated |
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