Cu2ZnSnSe4 nano material as well as preparation method and application of thereof
A nanomaterial and reaction technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of less zinc and high tin, and achieve the effect of reducing production costs, simple process conditions, and important application value.
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Embodiment 1
[0027] Embodiment 1, prepare Cu 2 ZnSnSe 4 nanomaterials
[0028]Mix 0.25mmol copper oleate, 0.125mmol zinc oleate, 0.125mmol stannous octoate and 10mL oleylamine in flask a, and mix 0.25mmol diphenyldiselenide and 0.3mL toluene in centrifuge tube b; Heat the flask a at a rate of 10 °C / min to 60 °C and keep it for 0.5 hours, then continue to heat up to 110 °C at a rate of 10 °C / min and keep it for 0.5 hours At the same time as the ℃ step, use nitrogen to remove the oxygen and water in the flasks a and b for 1 hour; after that, continue to heat the flask a to 190 ℃ at a heating rate of 10 ℃ / min, and remove the diphenyl The toluene solution of base diselenide was added to flask a to react at 190°C. In order to make the reactants react more fully, the temperature of flask a was continued to rise to 205°C at a rate of 10°C / min for reaction, and the reaction was carried out at 205°C The reaction time is 3 hours, and after the reaction is completed, it is washed once with a mixed...
Embodiment 2
[0034] Embodiment 2, prepare Cu 2 ZnSnSe 4 nanomaterials
[0035] Mix 0.25mmol copper chloride, 0.125mmol zinc chloride, 0.125mmol stannous oxalate and 10mL oleylamine in flask a, mix 0.25mmol selenourea and 0.3mL n-hexane in centrifuge tube b, and put flask a Heat up to 60°C at a rate of 25°C / min and keep it for 1 hour, then continue to raise the temperature to 150°C at a rate of 25°C / min and keep it for 1 hour. At the same time, use nitrogen to remove the oxygen and water in the flasks a and b for 2 hours; after that, continue to heat up the flask a to 240°C at a rate of 25°C / min, and put the n-hexane of selenourea in the centrifuge tube b Put the solution into flask a and react at 240°C. In order to make the reactants react more fully, continue to raise the temperature of flask a to 255°C at a rate of 25°C / min for reaction. The reaction time at 255°C is 1 hour , the reaction is completed and washed once with a mixed organic solvent consisting of n-hexane and methanol at ...
Embodiment 3
[0041] Embodiment 3, prepare Cu 2 ZnSnSe 4 nanomaterials
[0042] Mix 0.25mmol copper oleate, 0.125mmol zinc oleate, 0.125mmol stannous octoate, 0.25mmol diphenyldiselenide and 10mL oleylamine in flask a, and heat flask a at a heating rate of 45°C / min After raising the temperature to 60°C and keeping it for 2 hours, continue to raise the temperature to 80°C at a rate of 45°C / min and keep it for 2 hours. While the above steps of raising the temperature to 60°C and continuing to raise the temperature to 80°C, exhaust the flasks a and b with nitrogen. Oxygen and water in the solution, the removal time is 4 hours, and then continue to heat up to 270°C at a heating rate of 45°C / min for reaction, the reaction time is 0.5 hours, and the reaction is completed with chloroform and isopropyl with a volume ratio of 1:1 The mixed organic solvent of alcohol composition washes once, obtains the Cu provided by the invention 2 ZnSnSe 4 nanomaterials.
[0043] Powder X-ray diffractometer (...
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