CuInS2 quantum dot of wurtzite structure and preparation method thereof
A wurtzite and quantum dot technology, applied in the field of nanomaterials, can solve problems such as high temperature and environmentally unfriendly organic solvents, and achieve the effects of simple equipment, good dispersion performance, and easy operation
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Embodiment 1
[0024] Zinc blende structure CuInS 2 Preparation method of quantum dots:
[0025] CuCl 2 (0.1 mmol) and InCl 4 4H 2 O (0.1 mmol) was stirred and dissolved in 35 mL of absolute ethanol; 1.2 mmol of p-bromothiophenol was added to the mixed solution and stirred, and the solution appeared a light yellow flocculent precipitate; in addition, Na 2 S·9H 2 O (0.4 mmol) was sonicated in 15 mL of absolute ethanol for 10 min. Na 2 S solution was added to 35 mL of CuCl 2 and InCl 4 In the mixture, the solution turned reddish brown. Finally, the mixture was transferred into a 60 mL autoclave lined with polytetrafluoroethylene, and kept at 200 °C for 16 hours. After the autoclave was naturally cooled to room temperature, the upper liquid was removed to obtain a brown precipitate; the precipitate was washed with absolute ethanol and centrifuged (16000 rpm, 10 min), and the product was dried in a vacuum oven at 60 °C for 6 hours to obtain CuInS 2 Powder composed of quantum dots. ...
Embodiment 2
[0028] Wurtzite CuInS 2 Preparation method of quantum dots:
[0029] CuCl 2 (0.1 mmol) and InCl 4 4H 2 O (0.1 mmol) was stirred and dissolved in 35 mL of absolute ethanol; 35 mmol of hexanethiol was added to the mixed solution, and stirred, the solution appeared white flocculent precipitate; in addition, Na 2 S·9H 2 O (0.4 mmol) was sonicated in 15 mL of absolute ethanol for 10 min. Na 2 S solution was added to 35 mL of CuCl 2 and InCl 4 In the mixture, the solution turned reddish brown. Finally, the mixture was transferred into a 60 mL autoclave lined with polytetrafluoroethylene, and kept at 200 °C for 16 hours. After the autoclave was naturally cooled to room temperature, the upper liquid was removed to obtain a brown precipitate; the precipitate was washed with absolute ethanol and centrifuged (16000 rpm, 10 min), and the product was dried in a vacuum oven at 60 °C for 6 hours to obtain CuInS 2 Powder composed of quantum dots.
[0030] Powder XRD test show...
Embodiment 3
[0032] Wurtzite CuInS 2 Preparation method of quantum dots:
[0033] CuCl 2 (0.1 mmol) and InCl 4 4H 2 O (0.1 mmol) was stirred and dissolved in 35 mL of absolute ethanol; 35 mmol of ethanethiol was added to the mixed solution and stirred, the solution appeared white flocculent precipitate; in addition, Na 2 S·9H 2 O (0.4 mmol) was sonicated in 15 mL of absolute ethanol for 10 min. Na 2 S solution was added to 35 mL of CuCl 2 and InCl 4 In the mixture, the solution turned reddish brown. Finally, the mixture was transferred into a 60 mL autoclave lined with polytetrafluoroethylene, and kept at 200 °C for 16 hours. After the autoclave was naturally cooled to room temperature, the upper liquid was removed to obtain a brown precipitate; the precipitate was washed with absolute ethanol and centrifuged (16000 rpm, 10 min), and the product was dried in a vacuum oven at 60 °C for 6 hours to obtain CuInS 2 Powder composed of quantum dots.
[0034] Powder XRD test shows...
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