A carbon-modified bi based on peach peanut material 2 wo 6 Preparation method and application of composite photocatalyst
A biomass carbon, composite light technology, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., to achieve wide sources, good photocatalytic activity and stability, Stable performance
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[0042] A carbon-modified Bi based on peach blossom biomass 2 WO 6 The preparation method of composite photocatalyst, the steps are as follows:
[0043] Step 1, Peach Blossom Precursor Treatment:
[0044] Picking up withered peach blossoms, washing them with water to remove dirt and dust on the surface, washing them with deionized water, drying them at 60-80°C, putting them in a grinder, crushing them, and sieving them to obtain peach blossom powder for later use;
[0045] Step 2, the preparation of biomass carbon:
[0046] Take the peach blossom powder obtained in step 1 and add it to deionized water, seal it and stir it magnetically until it is uniformly dispersed, then let it stand still after ultrasonication, add a certain amount of NaOH solution, heat it in a water bath, stir it magnetically, and then use dilute H 2 SO 4 Adjust the pH of the solution to neutral, dry in vacuum to obtain a solid product, and grind it finely; then place the finely ground solid product in ...
Embodiment 1
[0054] In step 1, the quality of the peach blossoms picked up is 200g.
[0055] In step 2, the amount of peach blossom powder used is 2g, the amount of deionized water used is 30mL, NaOH solution 5mL; the NaOH and H 2 SO 4 The concentration is 1mol L -1 . The calcination temperature is 500°C, and it is kept at this constant temperature for 4 hours, and the heating rate is 2.3°C·min -1 ; The vacuum drying temperature is 60°C.
[0056] In step 3, the Bi(NO 3 ) 3 ·5H 2 The consumption of O is 1.0g, the consumption of the acetic acid used is 30mL; The used Na 2 WO 4 2H 2 The amount of O used is 0.3 g, and the amount of deionized water used is 50 mL; the heating temperature is 180° C., and the heating time is 20 h.
[0057] In step 4, the Bi 2 WO 6 The mass ratio to C is 4:1; the ultrasonic time is 2 hours, the stirring reaction time at the constant temperature is 3 hours, and the constant temperature is 70°C.
[0058] Take 0.05g of Bi obtained in step 4 2 WO 6 / C ad...
Embodiment 2
[0060] In step 1, the quality of the peach blossoms picked up is 200g.
[0061] In step 2, the amount of peach blossom powder used is 1g, the amount of deionized water used is 15mL, NaOH solution 5mL; the NaOH and H 2 SO 4 The concentration is 1mol L -1 . The calcination temperature is 450°C, and kept at this constant temperature for 4 hours, and the heating rate is 1.0°C·min -1 . The vacuum drying temperature is 70°C.
[0062] In step 3, the Bi(NO 3 ) 3 ·5H 2 The consumption of O is 0.5g, and the consumption of the acetic acid used is 15mL; The used Na 2 WO 4 2H 2 The amount of O used is 0.1 g and the amount of deionized water is 20 mL; the heating temperature is 180° C., and the heating time is 20 h.
[0063] In step 4, the Bi 2 WO 6 The mass ratio to C is 1:1; the ultrasonic time is 1 h, the stirring reaction time at the constant temperature is 2 h, and the constant temperature is 60°C.
[0064] Take 0.05g of Bi obtained in step 4 2 WO 6 / C added to 100mL co...
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