Ca-Bi-O series visible-light photocatalysis material and preparation method thereof
A photocatalytic material and visible light technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of high reaction temperature, achieve good repeatability, simple operation, and improve photocatalytic activity Effect
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Embodiment 1
[0034] Example 1: The preparation method of Ca-Bi-O visible light photocatalytic nanomaterials, the steps are as follows:
[0035] (1) Preparation of precursors
[0036] Weigh 0.24g Ca(NO 3 ) 2 and 0.97g Bi(NO 3 ) 3 Dissolve in 50mL of ethylene glycol, add 1mL of polymaleic acid dropwise, stir at room temperature for 5 minutes, adjust pH=9 with concentrated ammonia water, and stir at room temperature for 24 hours; wash the resulting product with 100mL of ethanol at room temperature, then centrifuge and separate Dry at 70°C for 24 hours to obtain a precursor.
[0037] (2) Annealing
[0038] Take 0.4g of the precursor prepared in step (1), pretreat at 300°C for 8 hours, and cool to room temperature naturally; grind for 20 minutes, anneal at 450-800°C for 10 hours, and cool to room temperature naturally to obtain Ca-Bi-O It is a photocatalytic functional material.
[0039] The reaction described in the steps (1) and (2) is to place the reaction kettle in an oven capable of...
Embodiment 2
[0045] The preparation steps are the same as in Example 1, and the difference is that the calcium salt used in step (1) is Ca(NO 3 ) 2 , the bismuth salt is BiCl 3 .
Embodiment 3
[0047] The preparation steps are the same as in Example 1, and the difference is that the calcium salt used in step (1) is CaCl 2 , the bismuth salt is: Bi(NO 3 ) 3 .
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