Preparation method of Ag2O quantum dot hybrid ZnIn2S4 nanosheet p-n type composite photocatalyst
A technology of znin2s4 and nanosheets, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, and water treatment of special compounds, and can solve problems that affect the promotion and application of photocatalytic technology, incomplete use of light sources, and low photoelectric conversion efficiency. Achieve the effects of large-scale production, short preparation cycle, and green reaction conditions
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example 1
[0022] (1) Weigh 0.099g of ZnIn 2 S 4 Nanosheets were added to 10mL of methanol, stirred for 10min, and then ultrasonicated for 10min, repeated three times to obtain uniformly dispersed ZnIn 2 S 4 nanosheet suspension;
[0023] (2) Measure 0.916mL of AgNO with a concentration of 0.8g / L 3 Methanol solution is added to the uniformly dispersed ZnIn prepared in step (1) 2 S 4 Nanosheet suspension was stirred in the dark for 30 min, and then 21.6 μL of NaOH aqueous solution with a concentration of 0.4 mol / L was added dropwise, in which AgNO 3 The molar ratio with NaOH was 1:2, and continued to stir for 60 min. After the reaction, the obtained product was washed several times with deionized water and absolute ethanol, and dried in vacuum to obtain Ag 2 O quantum dot hybrid ZnIn 2 S 4 Nanosheet p-n type composite photocatalyst, in which Ag 2The mass fraction of O quantum dots is 0.5%.
[0024] (3) The sample was irradiated under visible light for 100 minutes, and the degrad...
example 2
[0026] (1) Weigh 0.15g of ZnIn 2 S 4 Nanosheets were added to 20mL of methanol, stirred for 15min, and then ultrasonicated for 10min, repeated three times to obtain uniformly dispersed ZnIn 2 S 4 nanosheet suspension;
[0027] (2) Measure 1.83mL of AgNO with a concentration of 1.2g / L 3 Methanol solution is added to the uniformly dispersed ZnIn prepared in step (1) 2 S 4 The nanosheet suspension was stirred for 40 min in the dark, and then 32.4 μL of NaOH aqueous solution with a concentration of 0.8 mol / L was added dropwise, in which AgNO 3 The molar ratio with NaOH was 1:2, and continued to stir for 80 min. After the reaction was over, the obtained product was washed several times with deionized water and absolute ethanol, and dried in vacuum to obtain Ag 2 O quantum dot hybrid ZnIn 2 S 4 Nanosheet p-n type composite photocatalyst, in which Ag 2 The mass fraction of O quantum dots is 1%.
[0028] (3) The sample was irradiated under visible light for 100 min, and the ...
example 3
[0031] (1) Weigh 0.2g of ZnIn 2 S 4 Nanosheets were added to 30mL of methanol, stirred for 20min, and then ultrasonicated for 15min, repeated three times to obtain uniformly dispersed ZnIn 2 S 4 nanosheet suspension;
[0032] (2) Measure 4.54mL of AgNO with a concentration of 2g / L 3 Methanol solution is added to the uniformly dispersed ZnIn prepared in step (1) 2 S 4 The suspension of nanosheets was stirred in the dark for 50 min, and then 133.8 μL of NaOH aqueous solution with a concentration of 1.2 mol / L was added dropwise, in which AgNO 3 The molar ratio with NaOH is 1:3, continue to stir for 100min, after the reaction is over, wash the obtained product several times with deionized water and absolute ethanol, and dry it in vacuum to obtain Ag 2 O quantum dot hybrid ZnIn 2 S 4 Nanosheet p-n type composite photocatalyst, in which Ag 2 The mass fraction of O quantum dots is 3%.
[0033] (3) The sample was irradiated under visible light for 100 min, and the degradatio...
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