Carbon nitride hollow sphere photocatalyst, preparation method and application thereof
A technology of photocatalyst and hollow sphere, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve the effects of simplifying the synthesis process, good photocatalytic performance, reducing environmental pollution and cost
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[0042] Example 1
[0043] Disperse cyanuric chloride and dimeric cyanamide (mass ratio of 1:0.34) in acetonitrile (the ratio of melamine chloride to acetonitrile is 1g:22mL), and stir the mixture in a sealed manner at room temperature for 12h at a speed of 500r / min. The mixture was transferred to a hydrothermal reactor and heat-treated at a constant temperature of 180°C for 72h. Naturally cooled to room temperature, the obtained solid precipitate was collected by centrifugation, washed twice with absolute ethanol, and then washed with distilled water. The washed precipitate was dried at a temperature of 50° C. for 12 hours to obtain a dried precipitate, and a carbon nitride hollow sphere photocatalyst was prepared.
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[0044] Example 2
[0045] Disperse cyanuric chloride and dimeric cyanamide (mass ratio 1:0.34) in acetonitrile (the ratio of cyanuric chloride to acetonitrile is 1g:22mL), and stir the mixture under airtight at room temperature for 12h at a speed of 500r / min. The mixed solution was transferred to a hydrothermal reactor and heat-treated at a constant temperature of 180°C for 96h. Naturally cooled to room temperature, the obtained solid precipitate was collected by centrifugation, washed twice with absolute ethanol, and then washed with distilled water. The washed precipitate is dried at a temperature of 90° C. for 6 hours to obtain a dried precipitate, which is a carbon nitride hollow sphere photocatalyst.
Example Embodiment
[0046] Example 3
[0047] Disperse cyanuric chloride and dimeric cyanamide (mass ratio 1:0.34) in acetonitrile (the ratio of cyanuric chloride to acetonitrile is 1g:20mL), and stir the mixture at 70°C under temperature control and reflux for 6 hours. 600r / min. The mixed solution was transferred to a hydrothermal reactor and heat-treated at a constant temperature of 180°C for 48h. Naturally cooled to room temperature, the obtained solid precipitate was collected by centrifugation, washed twice with absolute ethanol, and then washed with distilled water. The washed precipitate is dried at a temperature of 70° C. for 10 hours to obtain a dried precipitate, which is a carbon nitride hollow sphere photocatalyst.
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