A kind of preparation method of znte doped with S
A technology of sodium tellurite and zinc acetate, which is applied in the direction of binary selenium/tellurium compounds, etc., can solve the problems of high vacuum degree, high cost, and low output, and achieve the effects of good dispersion, low cost, and high output
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Embodiment 1
[0018] 1 mmol of sodium tellurite (Na 2 TeO 3 ) and 2mmol of zinc acetate powder were evenly mixed, placed in a polytetrafluoroethylene liner with a volume of 50 ml, and then added with 35 ml of ethanolamine (ie 2-hydroxyethylamine) solvent, stirred magnetically for 15 minutes, and sealed in a high-pressure reactor . Then the reactor was placed in an oven at 200 °C for 24 h. After the reaction, it was naturally cooled to room temperature, placed in a centrifuge for rapid precipitation (5500 rpm, 5 min), and the sediment was repeatedly washed with absolute ethanol and deionized water. The obtained deposits were dried in a vacuum oven at 60 °C for 6 h at a constant temperature, and finally the samples were obtained.
[0019] Such as figure 1 Shown is the XRD pattern of the resulting product. The results show that the obtained product is hexagonal wurtzite ZnTe, and its diffraction peaks are consistent with the PDF#37-1463 card.
[0020] Such as figure 2 Shown is the SEM ...
Embodiment 2
[0022] The sodium tellurite of 1mmol, the zinc acetate of 2mmol and the thiourea of 0.4mmol ((NH 2 ) 2 CS) were mixed evenly, and then placed in a polytetrafluoroethylene liner with a volume of 50 ml, and then 35 ml of ethanolamine was added, stirred magnetically for 15 minutes, and then sealed in a high-pressure reactor. Then the reactor was placed in an oven at 200 °C for 24 h. After the reaction, it was naturally cooled to room temperature, placed in a centrifuge for rapid precipitation (5500 rpm, 5 min), and the sediment was repeatedly washed with absolute ethanol and deionized water. The obtained deposits were dried in a vacuum oven at 60 °C for 6 h at a constant temperature, and finally the samples were obtained.
[0023] Such as image 3 Shown is the SEM image of the obtained product, and the doped particles have good dispersion. Figure 4 The energy dispersive X-ray spectroscopy (EDS) pattern of the obtained ZnTe nanoparticles shows that the S element is successf...
Embodiment 3
[0025] Mix 1mmol of sodium tellurite, 2mmol of zinc acetate and 0.05mmol of thiourea evenly, then put it in a 50ml polytetrafluoroethylene liner, then add 35ml of ethanolamine, stir it magnetically for 15min, and seal it under high pressure in the reactor. Then the reactor was placed in an oven at 180 °C for 24 h. After the reaction, it was naturally cooled to room temperature, placed in a centrifuge for rapid precipitation (5500 rpm, 5 min), and the sediment was repeatedly washed with absolute ethanol and deionized water. The obtained deposits were dried in a vacuum oven at 60 °C for 6 h at a constant temperature, and finally the samples were obtained.
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