Two-dimensional ultrathin ferric diselenide nano material as well as preparation method and application thereof
A technology of iron diselenide and nanomaterials, applied in the direction of binary selenium/tellurium compounds, nanotechnology, nanotechnology, etc., can solve problems such as limitations, and achieve the effect of simple operation steps and good application prospects
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Embodiment 1
[0045] A preparation method of ultra-thin iron diselenide nanosheets, the steps are as follows:
[0046] 1) Mix 1.0 mmol of selenium powder and 1.0 ml of oleylamine, stir for 5 minutes under the protection of nitrogen, then add 2.5 ml of 1-dodecanethiol, continue stirring for 5 minutes, the black selenium powder is completely dissolved, and the solvent changes from colorless to transparent into a brown solution;
[0047]2) Mix 0.5 mmol of iron acetylacetonate with 10 ml of oleylamine, vacuumize to remove water and oxygen, stir magnetically, heat to 80°C under temperature control and maintain for 30 minutes to fully dissolve the reaction precursor, and then pass the entire reaction system into Protective gas until the end of the reaction;
[0048] 3) Inject the Se source prepared in step 1) into the system in step 2) with a syringe, and heat to 220° C. and maintain it for 30 minutes;
[0049] 4) After the reaction is finished, the product is obtained by centrifugation and was...
Embodiment 2
[0053] The steps are the same as in Example 1, except that the oleylamine in the step (1) of Example 1 is replaced by hexadecylamine to obtain two-dimensional FeSe 2 Flake nanomaterials. Figure 5 It is a transmission electron micrograph of the prepared material, and it can be seen from the figure that the obtained material is still a two-dimensional sheet.
Embodiment 3
[0055] The steps are the same as in Example 1, except that the 1-dodecanethiol in the step (1) of Example 1 is replaced by 1-hexadecanthiol to obtain two-dimensional FeSe 2 Flake nanomaterials. Figure 6 Scanning electron micrographs of the prepared materials.
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