N-CDs/FeNbO4 composite photocatalyst as well as preparation method and application thereof
A catalyst and composite light technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, carbon monoxide, etc., can solve the problems of limited efficiency, light absorption performance and reactive active sites, so as to improve photocatalytic performance and capture light The ability to improve, the effect of small bandgap width
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Embodiment 1
[0039] Example 1: N-CDs / FeNbO 4 Preparation of composite photocatalysts
[0040] 0.2g FeCl 3 Dissolved in 10 mL of deionized water, followed by 0.2 g of NbCl 5 Dissolved in 10 mL of ethanol solution, each was stirred for 0.5 h and then FeCl 3 Aqueous solution added dropwise to NbCl 5 In the ethanol solution, after stirring evenly, sonicate at 100W power for 30min, take an appropriate amount of ammonia water to adjust the pH to 2, then transfer to a microwave reactor, the power is 300W, the time is 10min, after the reaction is completed, cool to room temperature, then centrifuge, wash , dried to obtain FeNbO 4 The precursor was heated at 800 °C for 1 h at a heating rate of 2 °C / min in an Ar atmosphere, and then cooled to room temperature to obtain FeNbO 4 nanoparticles.
[0041] Dissolve 1 g of citric acid in 10 mL of deionized water, then add 300 μL of ethylenediamine during stirring, sonicate at 100 W for 30 min and stir, and 25 mg of FeNbO 4 It was added to the above ...
Embodiment 2
[0050] Example 2: N-CDs / FeNbO 4 Preparation of composite photocatalysts
[0051] 0.3g FeCl 3 Dissolved in 15mL deionized water, then 0.3g NbCl 5 Dissolved in 15mL of ethanol solution, respectively stirred for 1.5h, FeCl 3 Aqueous solution added dropwise to NbCl 5 In the ethanol solution, after stirring evenly, sonicate at 200W power for 90min, take an appropriate amount of ammonia water to adjust the pH to 5, then transfer to a microwave reactor, the power is 500W, the time is 20min, after the reaction is completed, cool to room temperature, then centrifuge, wash , dried to obtain FeNbO 4 The precursor was heated at 800 °C for 2 h at a heating rate of 3 °C / min in an Ar atmosphere, and then cooled to room temperature to obtain FeNbO 4 nanoparticles.
[0052] 2g of citric acid was dissolved in 15mL of deionized water, then 400μL of ethylenediamine was added in the stirring process, ultrasonicated for 20min at 200W and stirred, 30mg FeNbO was added to the above solution, an...
Embodiment 3
[0053] Example 3: N-CDs / FeNbO 4 Preparation of composite photocatalysts
[0054] 0.5g FeCl 3 Dissolved in 20 mL of deionized water, followed by 0.5 g of NbCl 5 Dissolve in 20mL ethanol solution, stir for 3h respectively, FeCl 3 Aqueous solution added dropwise to NbCl 5 In the ethanol solution, after stirring evenly, sonicate for 180min under 300W power, take an appropriate amount of ammonia water to adjust the pH to 10, then transfer to a microwave reactor, the power is 800W, the time is 30min, after the reaction is completed, cool to room temperature, then centrifuge, wash , dried to obtain FeNbO 4 The precursor was heated at 1000 °C for 2 h at a heating rate of 5 °C / min in an Ar atmosphere, and then cooled to room temperature to obtain FeNbO 4 nanoparticles.
[0055] Dissolve 3 g of citric acid in 20 mL of deionized water, then add 500 μL of ethylenediamine during stirring, sonicate for 40 min at 300 W and stir, and 50 mg of FeNbO 4 It was added to the above solution,...
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