A method for preparing core-shell nanoparticles and solutions thereof
A nanoparticle and core-shell technology, which is applied in the field of preparing core-shell nanoparticles and their solutions, can solve the problems of reducing the fluorescence quantum yield of semiconductor nanoparticles, and achieve the goals of increasing the fluorescence quantum yield, low production cost, and simplifying the types of raw materials Effect
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Embodiment 1
[0084] Embodiment 1: Shell wrapping time is to CuInS 2 / Effect of ZnS core-shell nanoparticles on properties
[0085] Mix 0.293g zinc acetate, 3ml dodecyl mercaptan and 6ml octadecene solvent. The mixture was heated to 100 °C until the zinc salt was dissolved, forming a shell precursor solution.
[0086] Add 0.051g of cuprous acetate, 0.120g of indium acetate and 1.03ml of dodecyl mercaptan to 10.3ml of octadecene solvent, stir and degas under nitrogen atmosphere for 30min, then stir at 240°C for a certain period of time (see Table 1) , forming CuInS 2 Nanoparticle solution.
[0087] Quickly pour the shell precursor solution into the CuInS 2 Nanoparticle solution, after reacting for a preset reaction time (see Table 1) at a shell wrapping temperature of 240°C, a solution containing CuInS was obtained. 2 / ZnS core-shell nanoparticles solution and cooled to room temperature.
[0088] CuInS 2 Acetone and isopropanol mixed solution (the volume ratio of acetone and isopropa...
Embodiment 2
[0093] Embodiment 2: zinc salt consumption is to CuInS 2 / Effect of ZnS core-shell nanoparticles on properties
[0094] Mix a certain amount of zinc acetate (see Table 2), 3ml dodecyl mercaptan and 6ml octadecene solvent. The mixture was heated to 100 °C until the zinc salt was dissolved, forming a shell precursor solution.
[0095] Add 0.036g of cuprous acetate, 0.084g of indium acetate and 0.72ml of dodecyl mercaptan to 7.20ml of octadecene solvent, stir and degas under nitrogen atmosphere for 30min, then stir at 240°C for 60min to form CuInS 2 Nanoparticle solution and cool it down to 220 °C.
[0096] Quickly pour the shell precursor solution into the CuInS 2 Nanoparticle solution, after reacting for a preset reaction time (see Table 2) at 220°C, a solution containing CuInS was obtained. 2 / ZnS core-shell nanoparticles solution and cooled to room temperature.
[0097] Addition is containing CuInS 2 Acetone and isopropanol mixed solution (the volume ratio of acetone a...
Embodiment 3
[0101] Embodiment 3: Stirring temperature is to CuInS 2 / Effect of ZnS core-shell nanoparticles on properties
[0102] Mix 0.440 g zinc acetate, 3 ml 1-dodecanthiol and 6 ml octadecene solvent. The mixture was heated to 100 °C until the zinc salt was dissolved, forming a shell precursor solution.
[0103] Add 0.075g cuprous acetate, 0.175g indium acetate and 1.50ml dodecyl mercaptan to 15.00ml octadecene solvent, stir and degas under nitrogen atmosphere for 30min, then stir at 260°C for 30min to form CuInS 2 Nanoparticle solution and cool it down to 240 °C.
[0104] Quickly pour the shell precursor solution into the CuInS 2 Nanoparticle solution, after reacting for a preset reaction time (see Table 3) at 240°C, a solution containing CuInS was obtained. 2 / ZnS core-shell nanoparticles solution, which was cooled to room temperature.
[0105] Addition is containing CuInS 2 Acetone and isopropanol mixed solution (the volume ratio of acetone and isopropanol is 4: 1) of the s...
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