Method for preparing water-soluble CdS nano-crystals
A nanocrystalline, water-soluble technology, applied in the field of CdS nanocrystalline preparation, can solve the problems of limited range, extremely difficult short-wave emission, low energy, etc., and achieve the effect of mild reaction conditions, convenient large-scale production and preparation, and good stability
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Embodiment 1
[0031] (1) Analytical pure cadmium chloride 2.5 hydrate (CdCl 2 2.5H 2 O) added to deionized water, configured into a transparent solution with a concentration of 0.5mmol / L, and the resulting solution was denoted as A.
[0032] (2) Glutathione was added to deionized water to prepare a transparent solution with a concentration of 5 mmol / L, and the obtained solution was designated as B.
[0033] (3) Add the prepared B solution into the round bottom flask filled with A solution, adjust the pH to 7 with sodium hydroxide with a concentration of 0.5mol / L, feed high-purity nitrogen gas and heat it in an oil bath to maintain at 70°C , the reaction time was controlled at 5h, and naturally cooled to room temperature after the reaction.
[0034] (4) After the reaction is completed, the solution is centrifuged and dried, and the final product obtained is CdS nanocrystals.
Embodiment 2
[0036] (1) Analytical pure cadmium acetate dihydrate (C 4 h 6 CdO 4 2H 2 O) added to deionized water, configured into a transparent solution with a concentration of 2mmol / L, and the resulting solution was denoted as A.
[0037] (2) Glutathione was added to deionized water to prepare a transparent solution with a concentration of 12mmol / L, and the obtained solution was designated as B.
[0038] (3) Add the prepared B solution into the round bottom flask filled with A solution, adjust the pH to 9 with sodium hydroxide with a concentration of 2mol / L, feed high-purity helium and heat it in an oil bath to maintain it at 100°C , the reaction time was controlled at 9h, and the reaction was naturally cooled to room temperature.
[0039] (4) After the reaction is completed, the solution is centrifuged and dried, and the final product obtained is CdS nanocrystals.
Embodiment 3
[0041] (1) Analytical pure cadmium chloride 2.5 hydrate (CdCl 2 2.5H 2 O) added to deionized water, configured into a transparent solution with a concentration of 15mmol / L, and the resulting solution is denoted as A.
[0042] (2) Add glutathione to deionized water to prepare a transparent solution with a concentration of 30mmol / L, and the obtained solution is marked as B.
[0043] (3) Add the prepared B solution into the round-bottomed flask filled with A solution, adjust the pH to 13 with sodium hydroxide with a concentration of 5mol / L, feed high-purity argon and heat it in an oil bath to maintain it at 120°C , the reaction time was controlled at 14h, and naturally cooled to room temperature after the reaction.
[0044] (4) After the reaction is completed, the solution is centrifuged and dried, and the final product obtained is CdS nanocrystals.
[0045] 2. Product characteristic test:
[0046] 1, the CdS nanocrystal that above each example is made is analyzed with the D8...
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