Selenium precursor for preparing metal selenide nanometer material
A technology for metal selenide and nanomaterials, which is applied in the field of preparation of nanomaterials, can solve the problems of poor quality of selenide nanomaterials, harsh experimental conditions and the like, and achieves the effects of low cost, easy storage and transfer, and mild reaction conditions.
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Embodiment 1
[0042] Step 1: Add 3mL of oleylamine, 3mmol of selenium powder and 1.5mmol of dimethylamine borane complex into a 25mL flask, heat to 130°C while stirring, after five minutes the selenium powder dissolves, and the solution The color changes from colorless to dark brown and then to a colorless and transparent selenium solution. The selenium solution was cooled to 70°C and set aside.
[0043] Step 2: While performing step 1, add 3mmol copper chloride, 1.5mmol zinc chloride, 1.5mmol tin chloride and 10mL oleylamine into a 50mL three-necked flask to form a mixed solution, and place the flask in a standard Under the anhydrous and oxygen-free system (Schlenk system), the mixed solution was dehydrated and deoxygenated at 130° C. for 1 h.
[0044] Step 3: The temperature of the mixed solution after removing water and oxygen is raised to 230° C., and at this temperature, the selenium solution obtained in Step 1 is rapidly injected into the rapidly stirred mixed solution using a syring...
Embodiment 2
[0047] Step 1: Add 1.5mL of oleylamine, 1.5mmol of selenium powder and 0.75mmol of dimethylamine borane complex into a 25mL flask, heat to 120°C while stirring, and the selenium powder will dissolve after five minutes. The color of the solution changed from colorless to dark brown, and then to a colorless and transparent selenium solution. The selenium solution was cooled to 70°C and set aside.
[0048] Step 2: While performing step 1, add 1.5mmol of zinc acetylacetonate, 10mL of octadecene and 3mmol of hard fatty acid into a 50mL three-necked flask to form a mixed solution, and place the flask in a standard anhydrous and oxygen-free system (Schlenk system), at 130° C., remove water and oxygen from the formed mixed solution for 1 h.
[0049] Step 3: The temperature of the mixed solution after removing water and oxygen is raised to 230° C., and at this temperature, the selenium solution obtained in Step 1 is rapidly injected into the rapidly stirred mixed solution using a syri...
Embodiment 3
[0052] Step 1: Add 3mL of oleylamine, 3mmol of selenium powder and 1.5mmol of dimethylamine borane complex into a 25mL flask, heat to 110°C while stirring, after five minutes the selenium powder dissolves, and the solution The color changes from colorless to dark brown and then to a colorless and transparent selenium solution. The selenium solution was cooled to 70°C and set aside.
[0053] Step 2: While performing step 1, add 1.5mmol copper acetylacetonate, 1.5mmol indium chloride and 10mL oleylamine to a 50mL three-necked flask to form a mixed solution, and place the flask in a standard anhydrous and oxygen-free system (Schlenk system), the mixed solution was dehydrated and deoxygenated at 130° C. for 1 h.
[0054] Step 3: The temperature of the mixed solution after removing water and oxygen is raised to 230° C., and at this temperature, the selenium solution obtained in Step 1 is rapidly injected into the rapidly stirred metal precursor using a syringe. Incubate at 210 °C...
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