Preparation method and application of two-dimensional thin-layer Au/g-C3N4 composite photocatalyst
A technology of g-c3n4, composite light, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of high photogenerated-electron-hole recombination efficiency, limitation, general electron transport ability, etc. , to achieve the effect of improving transmission capacity, simple operation, and improving light reduction ability
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Embodiment 1
[0031] (1) Two-dimensional thin-layer g-C 3 N 4 Precursor preparation:
[0032] Put 10g of urea into an alumina crucible, and calcine it in a muffle furnace at a high temperature of 550°C (the heating rate is 5°C / min) for 4h;
[0033] (2) Two-dimensional thin-layer g-C 3 N 4 Preparation of nanosheets:
[0034] The two-dimensional thin layer g-C 3 N 4 The precursor was added to the nitric acid solution with pH = 1, stirred for 8 hours under the condition of heating in water at 80°C, and then the obtained sample was washed with water several times (to neutral), dried in vacuum at 60°C, and then calcined at 500°C for 2 hours. After cooling to room temperature, the two-dimensional thin layer g-C can be obtained by grinding 3 N 4 Nanosheets.
[0035] (3) Preparation of two-dimensional Au / CN composite photocatalyst:
[0036] Mix 100 mg of the sample obtained in (2) with 100 ml of deionized water and ultrasonically until it is completely dispersed, add 1 ml of HAuCl with a ...
Embodiment 2
[0039] (1) Two-dimensional thin-layer g-C 3 N 4 Precursor preparation:
[0040] Put 10g of urea into an alumina crucible, and calcine it in a muffle furnace at a high temperature of 550°C (the heating rate is 5°C / min) for 4h;
[0041] (2) Two-dimensional thin-layer g-C 3 N 4 Preparation of nanosheets:
[0042] The two-dimensional thin layer g-C 3 N 4 The precursor was added to the nitric acid solution with pH = 1, stirred for 8 hours under the condition of heating in water at 80°C, and then the obtained sample was washed with water several times, dried in vacuum at 60°C, and then calcined for a second time at 500°C for 2h (the heating rate was 5°C / min), after being cooled to room temperature, the two-dimensional thin layer g-C can be obtained by grinding 3 N 4 Nanosheets.
[0043] (3) Preparation of two-dimensional Au / CN composite photocatalyst:
[0044] Mix 100 mg of the sample obtained in (2) with 100 ml of deionized water and ultrasonically until it is completely...
Embodiment 3
[0047] (1) Two-dimensional thin-layer g-C 3 N 4 Precursor preparation:
[0048] Put 10g of urea into an alumina crucible, and calcine it in a muffle furnace at a high temperature of 550°C (the heating rate is 5°C / min) for 4h;
[0049] (2) Two-dimensional thin-layer g-C 3 N 4 Preparation of nanosheets:
[0050] The two-dimensional thin layer g-C 3 N 4 The precursor was added to the nitric acid solution with pH = 1, stirred for 8 hours under the condition of heating in water at 80°C, and then the obtained sample was washed with water for several times, dried in vacuum at 60°C, and then calcined for a second time at 500°C for 2 hours, and then cooled to room temperature , Grinding to get two-dimensional thin layer g-C 3 N 4 Nanosheets.
[0051] (3) Preparation of two-dimensional Au / CN composite photocatalyst:
[0052] Mix 100 mg of the sample obtained in (2) with 100 ml of deionized water and ultrasonically until completely dispersed, add 10 ml of HAuCl with a concentra...
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