Preparation method for easy-to-recover infusorial earth/Ta3N5 visible-light photocatalyst
A technology of photocatalyst and diatomite, which is applied in the field of preparation of visible light photocatalyst, can solve the problems of limited large-scale application and wide forbidden band width, etc., and achieves the effects of low equipment requirements, easy recovery and simple preparation method.
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Embodiment 1
[0030] (1) Add 0.1g of tantalum pentachloride and 0.1g of diatomite powder into 8mL of absolute ethanol, ultrasonicate and stir for 2 minutes each to obtain a colloidal suspension.
[0031] (2) Then pour the above dehydrated alcohol solution containing tantalum pentachloride and diatomaceous earth into the crucible, and place the crucible on the top of the sealable container. The bottom of the sealable container is prefilled with 3 mL of distilled water. After sealing the container, put it into an oven and heat it to 120° C. and keep it warm for 10 hours. After the heat preservation is completed and naturally cooled to room temperature, open the device, take out the crucible, pour out the powder, wash with distilled water and absolute ethanol for 3 times, and vacuum-dry at 60°C for 8 hours to obtain the required diatomite / Ta 2 o 5 Core / shell powder.
[0032] (3) Diatomaceous earth / Ta 2 o 5 The core / shell composite powder is placed in a horizontally placed alumina tube fur...
Embodiment 2
[0036] (1) Add 0.1g of tantalum pentachloride and 0.1g of diatomite powder into 8mL of absolute ethanol, ultrasonicate and stir for 2 minutes each to obtain a colloidal suspension.
[0037] (2) Then pour the above dehydrated alcohol solution containing tantalum pentachloride and diatomaceous earth into the crucible, and place the crucible on the top of the sealable container. The bottom of the sealable container is prefilled with 3 mL of distilled water. After sealing the container, put it into an oven and heat it to 120° C. and keep it warm for 10 hours. After the heat preservation is completed and naturally cooled to room temperature, open the device, take out the crucible, pour out the powder, wash with distilled water and absolute ethanol for 3 times, and vacuum-dry at 60°C for 8 hours to obtain the required diatomite / Ta 2 o 5 Core / shell powder.
[0038] (3) Diatomaceous earth / Ta 2 o 5 The core / shell composite powder is placed in a horizontally placed alumina tube fur...
Embodiment 3
[0042] (1) Add 0.2g of tantalum pentaiodide and 0.2g of diatomaceous earth powder into 8mL of absolute ethanol, ultrasonicate and stir for 2 minutes each to obtain a colloidal suspension.
[0043] (2) Then pour the above dehydrated alcohol solution containing tantalum pentachloride and diatomaceous earth into the crucible, and place the crucible on the top of the sealable container. The bottom of the sealable container is prefilled with 10 mL of distilled water. After sealing the container, put it into an oven and heat it to 180° C. and keep it warm for 20 hours. After the heat preservation is completed and naturally cooled to room temperature, open the device, take out the crucible, pour out the powder, wash with distilled water and absolute ethanol for 3 times, and vacuum-dry at 60°C for 8 hours to obtain the required diatomite / Ta 2 o 5 Core / shell powder.
[0044] (3) Diatomaceous earth / Ta 2 o 5 The core / shell composite powder is placed in a horizontally placed alumina ...
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