A kind of gasse nanomaterial, liquid phase exfoliation method and application thereof
A nanomaterial, liquid phase exfoliation technology, applied in the field of two-dimensional materials, can solve the problem of high time and equipment requirements, and achieve the effects of low cost, uniform dispersion and clear shape
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Embodiment 1
[0049] Step 1: Prepare 50 mg of GaSe with a purity of 99.995%.
[0050] Step 2: Weigh 2 ml of IPA with a purity of 99.7% into a transparent glass dispensing bottle, add the GaSe weighed in step 1 into the IPA solution, and seal the glass bottle.
[0051] Step 3: Place the sealed glass bottle in a water bath for 3 to 4 hours in an ultrasonic device with a power of 300W and a frequency of 40kHz, keep the bath temperature at 25°C, and perform ultrasonic dispersion. The speed of ultrasonic dispersion is 8000 to 10000rpm, and then the initial dispersion is obtained. liquid.
[0052] Step 4: Add 2 ml of IPA isoacetone to the initial dispersion, place it in a water bath, centrifuge at 10,000 rpm for 3 min, and separate the supernatant for use.
[0053] Step 5: Put the supernatant separated in Step 4 into a water bath for 2h in an ultrasonic device with a power of 300W and a frequency of 40kHz, keep the bath temperature at 25°C, and then centrifuge the dispersion at 10,000rpm for 3mi...
example 1
[0054] The optical spectrum of the GaSe granular material used in Example 1 is as follows: figure 1 As shown, the obtained Raman spectrum is as Figure 9 shown;
[0055]The optical photos of the obtained GaSe nanomaterials are as follows: figure 2 As shown, the Raman spectrum is as Figure 10 As shown, the AFM spectrum is as Figure 18 shown;
[0056] figure 1 and figure 2 It shows that the thickness of the obtained product is thick, the morphology is irregular flake, and the output is more.
[0057] Figure 9 , Figure 10 and Figure 18 It shows that the obtained product is GaSe nanomaterial and its monolayer thickness is thinned to 8.727nm. According to the literature (Tang Luping. CVD preparation of gallium selenide nanostructure and its photoelectric properties research [D].), it can be judged that the number of layers is 8-9 layers, and the resulting flakes were heavily stacked.
Embodiment 2
[0059] Step 1: Same as Example 1.
[0060] Step 2: Same as Example 1.
[0061] Step 3: Place the sealed glass bottle in a water bath for 3-4 hours in an ultrasonic device with a power of 300W and a frequency of 40kHz, and keep the bath temperature at 35°C.
[0062] Step 4: Same as Example 1.
[0063] Step 5: Put the supernatant liquid separated in step 4 into a water bath for 2h in an ultrasonic device with a power of 300W and a frequency of 40kHz, keep the bath temperature at 35°C, and then centrifuge the dispersion liquid at a speed of 10000rpm for 3min to separate the supernatant liquid.
[0064] The color of the supernatant obtained from the reaction was lighter than that of Example 1.
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