Carbon nitride composite material and preparation method and application thereof in artificial photosynthesis
A technology of composite materials and carbonitrides, applied in the preparation of organic compounds, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problem of rapid recombination with poor conductivity and low NADH production activity , limited light absorption and other issues, to achieve the effect of improving electron transmission efficiency, improving efficiency and selectivity, and simple preparation method
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Embodiment 1
[0043] 1. Preparation of graphitic carbon nitride nanosheets
[0044] Add 5g of dicyandiamide into a crucible, wrap it with aluminum foil, put it into a muffle furnace, set the program to raise the temperature from 20°C to 550°C at a rate of 2.5°C / min, keep it warm for 4 hours, and then cool down naturally to obtain blocks graphitic carbon nitride. Grind the product into powder and spread 4g on a 10×10cm aluminum foil paper, put it into a muffle furnace, set the program to raise the temperature from 20°C to 550°C at a rate of 5°C / min, keep it warm for 2 hours and then cool it down naturally. Graphite phase carbon nitride nanosheets were obtained.
[0045] figure 1 and figure 2 The SEM images and TEM images of graphite-phase carbon nitride nanosheets are respectively. It can be observed from the pictures that the prepared graphite-phase carbon nitride is uniform in size and presents a thin sheet-like structure.
[0046] 2. Preparation of Phthalate Diimide / Graphite Carbon N...
Embodiment 2
[0051] Mix 10 mg of the phthalic acid diimide / graphite-phase carbon nitride composite material prepared in Example 1 with 10 mL of reaction solution (phosphate buffer solution with pH=8, 15% wt triethanolamine, 1 mM NAD + , 0.25mM[Cp*Rh(bpy)(H 2 O)] 2+ ) into a photocatalytic reactor, wrapped in tin foil at 25°C to avoid light and stirred for half an hour, then turned on the xenon light source to start the photocatalytic reaction to reduce NADH.
[0052] Then 10 mg of the phthalic acid diimide / graphite-phase carbon nitride composite material prepared in Example 1 was mixed with 10 mL of reaction solution (phosphate buffer solution of pH=7.4, 15% wt triethanolamine, 0.1 mM NAD + , 3U formate dehydrogenase, 50mM NaHCO 3 , 0.25mM[Cp*Rh(bpy)(H 2 O)] 2+ ) into the photocatalytic reactor after being mixed evenly, wrapped in tin foil at 25°C to avoid light and stirred for one and a half hours, then turned on the xenon lamp light source to start the photocatalytic reaction to redu...
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