Photocatalytic material for degrading antibiotics as well as preparation method and application of photocatalytic material
A photocatalytic material and technology of catalytic material, applied in the field of photocatalytic material and its preparation, can solve the problems of high light absorption range and photogenerated electron-hole recombination rate
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Embodiment 1
[0030] Embodiment 1 Photocatalytic material and preparation method thereof
[0031] 1) Put 5 g of melamine and 20 mg of phytic acid into an agate mortar for thorough grinding and mixing, then put them into a muffle furnace and heat at a constant temperature of 550° C. for 4 hours at a heating rate of 5° C. / min. After the heating is completed, it is cooled for later use, and the heated product P-C 3 N 4 Continue to grind for 20 minutes, grind it into a powder with uniform particles, and store it for future use;
[0032] 2) Heating bismuth nitrate pentahydrate at a constant temperature of 550°C for 4h at a heating rate of 5°C / min to prepare pure-phase Bi 2 o 3 ;
[0033] 3) Bi 2 o 3 / P-C 3 N 4 Preparation: Weigh 0.312g of Bi prepared in step 22 o 3 , 5g of melamine and 20mg of phytic acid were thoroughly mixed in an agate mortar, ground and transferred to a corundum crucible with a lid. Subsequently, it was placed in a muffle furnace and heated at 500° C. for 4 hours a...
Embodiment 2
[0035] Embodiment 2 Levofloxacin photocatalytic degradation experiment
[0036] Photocatalytic experiments were carried out in a photochemical reactor at room temperature:
[0037] 1) Get the P-C prepared in 50mg embodiment 1 3 N 4 、 Bi 2 o 3 or photocatalytic materials (Bi 2 o 3 / P-C 3 N 4 ) into the quartz test tube, adding 50mL concentration is the levofloxacin detection solution of 10mg / L, and the concentration at this moment is denoted as C 0 ; The detection solution without adding any catalyst was used as a blank control.
[0038] 2) Put the quartz test tube containing the detection system into the photoreaction instrument. After the instrument is adjusted, react according to the following process: first, carry out 30min dark reaction, so that the prepared photocatalytic material and levofloxacin reach the adsorption-desorption equilibrium; After the dark reaction, turn on the 500w xenon lamp (simulated sunlight), extract 1.5mL of the detection solution at inter...
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