Composite solid solution photocatalyst, preparation method and application thereof
A photocatalyst and solid solution technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low photocatalyst performance and unsatisfactory light energy utilization rate, and improve the photocatalytic activity. , the effect of improving the photocatalytic performance and the method is simple
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Embodiment 1
[0034] This example is to illustrate the photocatalyst prepared by the preparation method of the present invention and its application.
[0035] (1) 2mmolBi(NO 3 ) 3 ·5H 2 O was dissolved in 40ml ethylene glycol to obtain solution A, 1mmol KBr and 1mmol KI were dissolved in 40ml deionized water to obtain solution B, and solution B was added dropwise to the solution at a rate of 1.5ml / min with a rubber dropper In A, after stirring for 30min at a rate of 80r / min on a magnetic stirrer, the solution was transferred to a 100ml polytetrafluoroethylene autoclave for high-temperature reaction. The reaction temperature was 160°C, and the reaction time was 16h. room temperature, then washed three times with deionized water and absolute ethanol, and finally dried at 70 °C for 10 h to obtain the prepared BiOBr 0.5 I 0.5 catalyst of light;
[0036] (2) 1mmolBi(NO 3 ) 3 ·5H 2 O was dissolved in 5ml concentrated nitric acid and 20ml deionized water to obtain solution C, 0.5mmol KBr a...
Embodiment 2
[0040] This example is to illustrate the photocatalyst prepared by the preparation method of the present invention and its application. The photocatalyst was prepared according to the same method as in Example 1, except that in step (1) and step (2), the reaction temperature in the constant temperature oven was 170° C., and the reaction time was 15 h.
[0041] The photocatalyst obtained by the above preparation method was applied to catalytic oxidation of hydroxypropyl guar gum in oilfield wastewater under visible light, and the results are shown in Table 1.
Embodiment 3
[0043] This example is to illustrate the photocatalyst prepared by the preparation method of the present invention and its application. Prepare the photocatalyst according to the same method as in Example 1, the difference is that the pH is adjusted to 11.6 in step (2), and in step (1) and step (2), the reaction temperature in the constant temperature oven is 150 ° C , Reaction time 18h.
[0044] The photocatalyst obtained by the above preparation method was applied to catalytic oxidation of hydroxypropyl guar gum in oilfield wastewater under visible light, and the results are shown in Table 1.
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Abstract
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