Defect-containing sandwich type perovskite catalyst as well as preparation method and application thereof
A catalyst and sandwich technology, which is applied in catalyst activation/preparation, chemical instruments and methods, chemical elements of heterogeneous catalysts, etc., can solve the problems of few researches on reaction selectivity and quantum efficiency, etc. Simple and feasible effect
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[0084] a. Accurately weighed 0.01mmol strontium chloride (SrCl 2 ·6H 2 O), 0.02mmol bismuth nitrate (Bi(NO 3 ) 2 ·5H 2 O), 0.02mmol niobium oxide (Nb 2 o 5 ) into an agate mortar and grind in the same direction for about 90 minutes, then dissolve it in an aqueous solution containing 3.0 mL of nitric acid and stir it magnetically for about 180 minutes;
[0085] b. Slowly add 3.0 mL of glyoxal into the solution obtained in step a while continuing to stir, and continue stirring for about 30 minutes. Transfer the obtained homogeneous solution to the autoclave and place it in the oven at 5°C min -1 The heating rate was increased to 200 ° C for 36 hours; finally, it was naturally cooled to room temperature, and the samples were washed, dried, and ground to obtain the defect-containing target product "sandwich" type perovskite catalyst strontium bismuth niobate SrBi 2 Nb 2 o 9 .
[0086] Wherein, the prepared catalyst is a defect-containing catalyst with visible light respo...
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