A carbon nitride hollow tube photocatalyst loaded with ruthenium oxide and its preparation and application
A photocatalyst, carbon nitride technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, dehydration of hydroxyl-containing compounds to prepare ethers, etc., can solve a large number of precious metal waste, strong toxicity and other problems , to achieve the effect of improving photocatalytic efficiency, simple operation and mild reaction conditions
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Embodiment 1
[0052] This embodiment prepares C 3 N 4 Precursor:
[0053] In the reaction vessel, add 2 g of melamine in 100 mL of distilled water, stir the mixture at room temperature for 0.5 h to obtain a white emulsion, then transfer the white emulsion to the reaction kettle, and react at 200 ° C for 12 h, After cooling to room temperature, the white solid was washed with distilled water and dried. The resulting white solid is C 3 N 4 Precursor. Finally got 300mg of C 3 N 4 Precursor.
Embodiment 2
[0055] This embodiment prepares C 3 N 4 catalyst:
[0056] 1g C 3 N 4 The precursors were transferred to a porcelain boat, and the mixture was slowly heated from room temperature to 500 °C under argon flow and maintained at this temperature for 3 h. After the reaction is completed, the resulting milky white solid is C 3 N 4 , and finally got 100mg C 3 N 4 nanotube.
Embodiment 3
[0058] This embodiment prepares a kind of composite catalyst RuO 2 @C 3 N 4 :
[0059] 1g C 3 N 4 Add the precursor to the reactor, then add distilled water, stir for 0.5h, adjust the pH to 1, stir for 1h, then add 7mg RuCl 3 ·XH 2 O, then reflux at 60°C for 24h. After cooling to room temperature, centrifuge to remove the supernatant and dry. Finally, the solid was transferred to a porcelain boat, and the mixture was slowly heated from room temperature to 500 °C under argon flow and maintained at this temperature for 3 h. After the reaction is completed, the resulting black solid is the complex RuO 2 @C 3 N 4 . Finally got 100mg of RuO 2 @C 3 N 4 .
[0060] figure 1 C of Example 1 3 N 4 Precursor structure diagram, from figure 1 It can be seen in C 3 N 4 The precursor is a solid rod-like structure.
[0061] figure 2 Be the C of embodiment 2 and embodiment 3 3 N 4 and RuO 2 @C 3 N 4 The X-ray powder diffraction pattern (XRD) of figure 2 It can be ...
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Abstract
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