Trivalent titanium ion self-doped titanium dioxide nanosheet catalyst
A titanium dioxide and nanosheet technology, applied in the field of photocatalyst materials, can solve the problems of increasing the carrier recombination center, limiting practical application, reducing the thermal stability of TiO2, etc., and achieving the effect of good photocatalytic performance
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Embodiment 1
[0012] Slowly add 3ml of 47% hydrofluoric acid to 20ml of tetraisopropyl titanate dropwise, then transfer it to the reaction kettle, and react at 200°C for 24h, then cool the system to room temperature naturally, and then use 0.1M NaOH solution Rinse 5 times, then wash with ionized water until the pH is 7, and dry overnight in vacuum to prepare titanium dioxide nanosheets.
Embodiment 2
[0014] Add 0.5 g of titanium dioxide nanosheets and 0.24 g of sodium borohydride prepared in Example 1 into deionized water, stir the above reaction mixture evenly, and heat and react at 180° C. for 12 h, then cool naturally, and then transfer it to 0.1 Stir in M hydrochloric acid solution for 10-15 hours, and obtain trivalent titanium ion self-doped titanium dioxide nanosheet catalyst filter cake by centrifugation. The obtained filter cake is washed with deionized water until the pH is 7, and then vacuum-dried at 60°C After treatment, the trivalent titanium ion self-doped titanium dioxide nanosheet catalyst is obtained.
Embodiment 3
[0016] Add 0.5 g of titanium dioxide nanosheets and 0.12 g of sodium borohydride prepared in Example 1 into deionized water, stir the above reaction mixture evenly, and heat and react at 180° C. for 12 h, then cool naturally, and then transfer it to 0.1 Stir in M hydrochloric acid solution for 10-15 hours, and obtain trivalent titanium ion self-doped titanium dioxide nanosheet catalyst filter cake by centrifugation. The obtained filter cake is washed with deionized water until the pH is 7, and then vacuum-dried at 60°C After treatment, the trivalent titanium ion self-doped titanium dioxide nanosheet catalyst is obtained.
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