Method for preparing lead tin selenide nanoflowers
A lead tin selenide, nanoflower technology, applied in chemical instruments and methods, nanotechnology, nanotechnology and other directions, can solve problems such as lack of microscale, and achieve the effect of simple equipment requirements
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Embodiment 1
[0021] This embodiment relates to a preparation method of lead-tin selenide nanoflowers, the specific steps are as follows:
[0022] Step 1, take 0.25mmol lead acetate and 2mmol tin acetate, mix, then add 67.5mmol oleylamine and 67.5mmol octadecene, heat to 280°C, keep for 3 hours, to obtain solution A;
[0023] Step 2, take 2.25mmol selenium powder, add 1.25mmol tri-n-octylphosphine, then heat to 80°C and keep for 3 hours to obtain solution B;
[0024] Step 3: Add solution B to solution A, then heat to 280°C and keep for 5 minutes; dissolve the obtained product in ethanol, centrifuge at 8000rpm for 10 minutes, remove the lower layer of precipitate, add chloroform, and centrifuge at 7000rpm for 5 minutes, Take the supernatant, add ethanol, and centrifuge at 8000rpm for 10 minutes; remove the precipitate from the lower layer, evaporate the solvent to dryness, and obtain the lead-tin-selenide nanoflowers.
[0025] The transmission electron microscope pictures of the prepared pr...
Embodiment 2
[0027] This embodiment relates to a preparation method of lead-tin selenide nanoflowers, the specific steps are as follows:
[0028] Step 1, take 1mmol lead acetate and 1mmol tin acetate, mix, then add 80mmol oleylamine and 80mmol octadecene, heat to 300°C, keep for 2 hours, to obtain solution A;
[0029] Step 2, take 2mmol selenium powder, add 1.25mmol tri-n-octylphosphine, then heat to 90°C and keep for 2 hours to obtain solution B;
[0030] Step 3: Add solution B to solution A, then heat to 280°C and keep for 5 minutes; dissolve the obtained product in ethanol, centrifuge at 8000rpm for 10 minutes, remove the lower layer of precipitate, add chloroform, and centrifuge at 7000rpm for 5 minutes, Take the supernatant, add ethanol, and centrifuge at 8000rpm for 10 minutes; remove the precipitate from the lower layer, evaporate the solvent to dryness, and obtain the lead-tin-selenide nanoflowers.
[0031] The transmission electron microscope pictures of the prepared products are...
Embodiment 3
[0033] This embodiment relates to a preparation method of lead-tin selenide nanoflowers, the specific steps are as follows:
[0034] Step 1, take 1.33mmol lead acetate and 0.67mmol tin acetate, mix, then add 100mmol oleylamine and 100mmol octadecene, heat to 320°C, keep for 1 hour, to obtain solution A;
[0035] Step 2, take 2mmol of selenium powder, add 1.25mmol of tri-n-octylphosphine, then heat to 100°C and keep for 1 hour to obtain solution B;
[0036] Step 3: Add solution B to solution A, then heat to 280°C and keep for 5 minutes; dissolve the obtained product in ethanol, centrifuge at 8000rpm for 10 minutes, remove the lower layer of precipitate, add chloroform, and centrifuge at 7000rpm for 5 minutes, Take the supernatant, add ethanol, and centrifuge at 8000rpm for 10 minutes; remove the precipitate from the lower layer, evaporate the solvent to dryness, and obtain the lead-tin-selenide nanoflowers.
[0037] The transmission electron microscope pictures of the prepared...
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