Method for preparing monolayer MoS2 and graphene compounded nano material
A composite nanomaterial and graphene composite technology, applied in the direction of graphene, nanocarbon, nanotechnology, etc., can solve the problems of small amount, large consumption of organic solvent, high sensitivity, etc., and achieve the effect of easy industrial expansion and simple process
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Embodiment 1
[0031] 1) Ultrasonic disperse 10.76 mmol graphene oxide in 200 mL deionized water, add 0.01 mol cetyltrimethylammonium bromide cationic surfactant (concentration 0.05 M), and stir well;
[0032] 2) Then add 1.4 g (5.38 mmol) ammonium thiomolybdate into it, stir well, slowly add 20 mL of hydrazine hydrate dropwise under stirring, continue stirring and heat to 95°C, under constant stirring and reflux conditions Under the reaction for 5h, ammonium thiomolybdate and graphene oxide were simultaneously reduced to MoS 2 and graphene, the solid product was collected by centrifugation, washed thoroughly with deionization, and then dried under vacuum at 100°C;
[0033] 3) The obtained solid product was heat-treated at 800 °C for 2 h in a nitrogen / hydrogen mixed atmosphere, the volume ratio of hydrogen in the mixed gas was 10%, and a single-layer MoS was prepared after heat treatment 2 Composite nanomaterials with graphene.
[0034] Its XRD diffraction pattern is shown in figure 1 Cu...
Embodiment 2
[0038] 1) Ultrasonically disperse 10.76 mmol of graphene oxide in 200 mL of deionized water, add 0.004 mol of cetyltrimethylammonium bromide cationic surfactant (concentration: 0.02 M), and stir thoroughly;
[0039] 2) Then add 1.4 g (5.38 mmol) ammonium thiomolybdate into it, stir well, slowly add 20 mL of hydrazine hydrate dropwise under stirring, continue stirring and heat to 95°C, under constant stirring and reflux conditions Under the reaction for 6h, ammonium thiomolybdate and graphene oxide were simultaneously reduced to MoS 2 and graphene, the solid product was collected by centrifugation, washed thoroughly with deionization, and then dried under vacuum at 100°C;
[0040] 3) The obtained solid product was heat-treated at 800 °C for 2 h in a nitrogen / hydrogen mixed atmosphere, the volume ratio of hydrogen in the mixed gas was 10%, and a single-layer MoS was prepared after heat treatment 2 Composite nanomaterials with graphene.
[0041] The final product obtained after...
Embodiment 3
[0043] 1) Ultrasonic disperse 5.38 mmol graphene oxide in 200 mL deionized water, add 0.01 mol cetyltrimethylammonium bromide cationic surfactant (concentration 0.05 M), and stir well;
[0044] 2) Then add 1.4 g (5.38 mmol) ammonium thiomolybdate into it, stir well, slowly add 20 mL of hydrazine hydrate dropwise under stirring, continue stirring and heat to 95°C, under constant stirring and reflux conditions Under the reaction for 7h, ammonium thiomolybdate and graphene oxide were simultaneously reduced to MoS 2 and graphene, the solid product was collected by centrifugation, washed thoroughly with deionization, and then dried under vacuum at 100°C;
[0045] 3) The obtained solid product was heat-treated at 800 °C for 2 h in a nitrogen / hydrogen mixed atmosphere, the volume ratio of hydrogen in the mixed gas was 10%, and a single-layer MoS was prepared after heat treatment 2 Composite nanomaterials with graphene.
[0046] The final product obtained after heat treatment was ch...
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