Method for preparing organic acid and base collaboratively supporting layered titanium dioxide
A technology of titanium dioxide and support layer, which is applied in the field of photocatalysis, can solve problems such as complex synthesis process, and achieve the effect of simple experimental operation and low equipment requirements
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example 1
[0020] Weigh 17g hexadecanoic acid (C 16 h 32 o 2 ) and 5.2g dodecylamine (C 12 h 27 N) Place in a beaker, add 60ml of ethanol, stir to dissolve, and mark it as solution A. Measure 13.5ml of tetrabutyl titanate into a beaker, add 70ml of isopropanol, stir to dissolve, and mark it as solution B. Add solution B into solution A, stir evenly, and adjust the pH of the solution to 7 with ammonia water. Continue stirring for 10 hours, aging for 60 hours to obtain a white precipitate, which is centrifuged, washed alternately with deionized water and absolute ethanol, and dried to obtain a layered titanium dioxide product. The resulting product has a regular layered structure (see figure 1 ). The photocatalytic performance of the obtained product is tested and calculated, and it is known that the degradation rate of methylene blue under ultraviolet light reaches 99.43% (see figure 2 ).
example 2
[0022] Weigh 1g capric acid (C 10 h 20 o 2 ) and 28g tetradecylamine (C 14 h 31 N) Place in a beaker, add 80ml of n-butanol, stir to dissolve, and mark it as solution A. Measure 9.7ml of titanium tetrachloride into a beaker, add 50ml of ethanol, stir to dissolve, and mark it as solution B. Add solution B to solution A, stir evenly, and adjust the pH of the solution to 5 with ammonia water. Continuous stirring for 100 hours, aging for 10 hours, a white precipitate was obtained, centrifuged, washed with deionized water and absolute ethanol alternately, dried, and finally a layered titanium dioxide product was obtained. The resulting product has a regular layered structure (see image 3 ). The photocatalytic performance of the obtained product has been tested and calculated, and it is known that the degradation rate of methylene blue under ultraviolet light reaches 95.6%.
example 3
[0024] Weigh 27g dodecanoic acid (C 12 h 24 o 2 ) and 2.1g octadecylamine (C 18 h 39 N) Place in a beaker, add 70ml of isopropanol, stir to dissolve, and mark it as solution A. Weigh 36g of titanium sulfate and place it in a beaker, add 80ml of 0.5mol / L sulfuric acid, stir to dissolve, and mark it as solution B. Add solution B to solution A, stir evenly, and adjust the pH of the solution to 0.5 with ammonia water. Continuous stirring for 60 hours, aging for 30 hours, a white precipitate was obtained, which was centrifuged, washed alternately with deionized water and absolute ethanol, dried, and finally a layered titanium dioxide product was obtained. The resulting product has a regular layered structure (see Figure 4 ). The photocatalytic performance of the obtained product has been tested and calculated, and it is known that the degradation rate of methylene blue under ultraviolet light reaches 97.8%.
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