A hand-dish type titanyl oxalate photocatalyst and preparation method thereof
A photocatalyst, titanyl oxalate technology, applied in the field of photocatalysis, can solve the problems of complex synthesis process, not being widely promoted, and high production cost, and achieve the effect of simple and easy-to-control preparation process, excellent photocatalytic activity, and avoiding hydrolysis
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[0039] A kind of preparation method of hand dish type titanyl oxalate photocatalyst, comprises the following steps:
[0040] Step 1: Ti(SO 4 ) 2 Add it into 50mL of deionized water, stir until completely dissolved, and prepare Ti(SO 4 ) 2 solution, titanium sulfate [Ti(SO 4 ) 2 ] participate in the follow-up reaction as a titanium source;
[0041] Step 2: According to the molar ratio Ti(SO 4 ) 2 :C 2 h 2 o 4 2H 2 The ratio of O=2:1 will be 0.316-1.580g C 2 h 2 o 4 2H 2 O is added to the Ti(SO 4 ) 2 In the solution, stir for 20-60min until completely dissolved, as a precursor solution, oxalic acid provides the C needed for generating oxalic acid titanyl salt as a complexing agent in this step 2 o 4 2- Ion and acidic environment, to avoid the hydrolysis of the generated titanyl oxalate;
[0042]Step 3: Transfer the precursor solution in step 2 to a 100mL reaction kettle, seal it and place it in an oven, and conduct a hydrothermal reaction at 70-120°C for 1-6 ...
Embodiment 1
[0048] 6.25g Ti(SO 4 ) 2 Added into 50mL deionized water, stirred until completely dissolved, and prepared Ti(SO 4 ) 2 solution; 0.632g C 2 h 2 o 4 2H 2 O added to Ti(SO 4 ) 2 In the solution, stir for 20 minutes until completely dissolved, as a precursor solution; transfer the precursor solution to a 100mL reactor, and conduct a hydrothermal reaction at 90°C for 1 hour to obtain the reaction product A; after the reaction, the reactor is naturally cooled to room temperature , the reaction product A was centrifuged, washed with deionized water to pH = 7, and then washed three times with absolute ethanol to obtain the reaction product B; the reaction product B was dried at 60°C for 6 hours to obtain the hand-dish type oxalic acid oxygen The titanium salt photocatalyst has a particle size of 3 μm and a thickness of 1.2 μm.
[0049] refer to figure 1 and figure 2 , The titanyl oxalate photocatalyst prepared in Example 1 has a hand-dish shape, rough particle surface, an...
Embodiment 2
[0051] 5.00g Ti(SO 4 ) 2 Add it into 50mL deionized water, stir until completely dissolved, and prepare Ti(SO 4 ) 2 solution; 1.264g C 2 h 2 o 4 2H 2 O added to Ti(SO 4 ) 2 In the solution, stir for 20 minutes until completely dissolved, as a precursor solution; transfer the precursor solution to a 100mL reactor, and conduct a hydrothermal reaction at 90°C for 5 hours to obtain the reaction product A; after the reaction, the reactor is naturally cooled to room temperature , the reaction product A was centrifuged, washed with deionized water to pH = 7, and then washed three times with absolute ethanol to obtain the reaction product B; the reaction product B was dried at 60°C for 6 hours to obtain the hand-dish type oxalic acid oxygen The titanium salt photocatalyst has a particle size of 4 μm and a thickness of 2 μm.
[0052] refer to image 3 and Figure 4 , the titanyl oxalate photocatalyst prepared in Example 2 has a hand-dish shape, good dispersion, uniform shape...
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