Photocatalyst la 3+ /bioi and its method of degrading bisphenol af
A photocatalyst and bisphenol technology, which is applied in the field of photocatalyst La3+/BiOI and bisphenol AF degradation, can solve the problems of time-consuming and labor-intensive, complex process, low processing efficiency, etc., and achieve energy saving, efficient degradation, and easy recovery. The effect of reuse
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[0077] The photocatalyst La used in the present invention 3+ / BiOI can be prepared by the following methods:
[0078] a. Bi(NO 3 ) 3 ·5H 2 Dissolve O in absolute ethanol to obtain solution a; dissolve KI in water to obtain solution b; add solution b to solution a to obtain a mixed solution;
[0079] b. La(NO 3 ) 3 ·6H 2 O was added to absolute ethanol, after stirring and mixing, and ultrasonication, La(NO 3 ) 3 ·6H 2 A homogeneous solution of O;
[0080] c. La(NO 3 ) 3 ·6H 2 The homogeneous solution of O is added to the mixed solution obtained in step a, and after mixing evenly, it is moved to a high-pressure reactor for reaction. After the reaction is completed, it is filtered and dried to obtain the photocatalyst La 3+ / BiOI.
[0081] More specifically, the photocatalyst La used in the present invention 3+ / BiOI can be prepared by the following methods:
[0082] a. Bi(NO 3 ) 3 ·5H 2 Dissolve O in absolute ethanol to obtain solution a; dissolve KI in water ...
Embodiment 1
[0092] The present embodiment adopts the following method to degrade bisphenol AF, comprising the following steps:
[0093] A, get potassium hydrogen persulfate 5mg, concentration is the aqueous solution 100mL that contains bisphenol AF of 30mg / L, mix 30min under room temperature and stirring velocity under the condition of 200r / min, then under the condition of stirring velocity of 150r / min, to Add 0.1mol / L perchloric acid or 0.1mol / L sodium hydroxide solution to the system to adjust the pH of the system to 7.0 to obtain a mixed solution;
[0094] B, 0.4g photocatalyst La 3+ / BiOI was added to the mixed solution obtained in step A, and stirred at room temperature and a stirring speed of 160r / min for 20min to obtain a suspension;
[0095] C. Control the power of the light source of visible light to be 300W, irradiate the suspension obtained in step B under visible light with a wavelength of 420-700nm for 30min, and control the stirring speed to 200r / min during irradiation to r...
Embodiment 2
[0098] The present embodiment adopts the following method to degrade bisphenol AF, comprising the following steps:
[0099] A, get potassium hydrogen persulfate 100mg, concentration is 1000mL of the aqueous solution containing bisphenol AF of 30mg / L, mix 30min under room temperature and stirring velocity under the condition of 200r / min, then under the condition of stirring velocity of 180r / min, to Add 0.1mol / L perchloric acid or 0.1mol / L sodium hydroxide solution to the system to adjust the pH of the system to 6.5-7.5 to obtain a mixed solution;
[0100] B, 5g photocatalyst La 3+ / BiOI was added to the mixed solution obtained in step A, and stirred at room temperature and a stirring speed of 200r / min for 30min to obtain a suspension;
[0101] C. Control the power of the light source of visible light to be 800W, irradiate the suspension obtained in step B under visible light with a wavelength of 420nm to 700nm for 90min, and control the stirring speed to 200r / min during irradi...
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Abstract
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