Preparation method for photo-Fenton catalyst
A catalyst, Fenton's technology, applied in the field of photo-Fenton catalyst preparation, can solve the problems of restricting development and application, difficult to treat sludge, etc., and achieve the effect of enhancing adsorption and promoting the separation of photogenerated charges
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[0026] Example 1
[0027] The preparation method of the composite catalyst in this embodiment is as follows:
[0028] Preparation of α-Fe 2 O 3 :First weigh 1.35g FeCl 3 ·6H 2 O, 1g polyethylene glycol-20000 and 3.6g sodium acetate are mixed and added to 40ml ethylene glycol, and stirred with a magnetic stirrer for 240min to fully dissolve polyethylene glycol-20000. Add the solution to a 50ml reaction kettle, then place the reaction kettle in a blast drying box, keep it at 200℃ for 8h, centrifuge and wash after the reaction to obtain Fe 3 O 4 powder. The Fe 3 O 4 The powder is added to the alumina crucible and calcined at 550°C for 2h to obtain α-Fe 2 O 3 , Marked as F.
[0029] Preparation of α-Fe 2 O 3 @C and surface treatment: respectively weigh 0.2gα-Fe 2 O 3 And 2.0g glucose, add to 40ml distilled water, ultrasonic for 30min to mix uniformly. The suspension was transferred to a 50ml reactor and placed in a drying oven at 180°C for 10 hours to obtain α-Fe 2 O 3 @C. 0.2gα-Fe 2 ...
Example Embodiment
[0031] Example 2
[0032] The difference between Example 2 and Example 1 is: in the preparation of α-Fe 2 O 3 @C, the amount of glucose added is 1.0g, other conditions are the same, the α-Fe prepared in Example 2 2 O 3 @C@Bi 2 O 3 -Bi 2 WO 6 The catalyst is referred to as FCB1.
[0033] Outcome characterization
[0034] figure 1 Α-Fe prepared in Example 1 2 O 3 , Α-Fe 2 O 3 @C and α-Fe 2 O 3 @C@Bi 2 O 3 -Bi 2 WO 6 X-ray diffraction pattern of, F, FC2 and FCB2 in the figure correspond to the multi-step hydrothermal (solvothermal) method to prepare α-Fe 2 O 3 , Α-Fe 2 O 3 @C and α-Fe 2 O 3 @C@Bi 2 O 3 -Bi 2 WO 6 .
[0035] The F spectrum has obvious diffraction peaks at 33.24°, 35.69°, 41.02°, 49.54°, 54.18°, 62.54° and 64.07°, which correspond to α-Fe respectively 2 O 3 (104), (110), (113), (024), (116), (214) and (300) crystal planes, which match with JCPDS card No.87-1166. The diffraction peaks of the FC2 spectrum become weaker, and there are only three weak peaks at 33.24°, 35.69° a...
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