A nanosheet fe 3 o 4 Preparation method of intercalated graphene oxide composite absorbing material
A technology of graphene compounding and intercalation oxidation, which is applied in chemical instruments and methods, and other chemical processes, can solve the problems of weak binding force and difficult shape control, and achieve strong binding force, good wave-absorbing performance, and simple process Effect
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[0027] In this example, a nano-flaky Fe is proposed 3 O 4 The preparation method of the intercalated graphene oxide composite wave absorbing material, the concrete steps are as follows:
[0028] S1, the graphene oxide solution is placed in a hydrothermal reactor for hydrothermal reaction;
[0029] S2, add anhydrous FeCl respectively according to a certain mass ratio with pure graphene oxide 3 , anhydrous glucose and NaCl, continue ultrasonic dispersion;
[0030] S3. After the sample obtained in step S2 is filtered and dried, the sample is treated at a high temperature in a protective gas, and then the sample is washed in deionized water, dried and ground.
[0031] Wherein, the concentration of the graphene oxide solution in the step S1 should be between 0.5-0.9%. In the step S1, the temperature in the hydrothermal reaction kettle is 100-180° C., and the hydrothermal time is 6-12 h. In described step S2, pure graphene oxide and anhydrous FeCl 3 The mass ratios of , anhydr...
Embodiment 1
[0034] A nano-flaky Fe 3 O 4 The preparation method of the intercalated graphene oxide composite wave absorbing material, the concrete steps are as follows:
[0035] S1. The content of pure graphene oxide (GO) in the graphene oxide solution was measured by a freeze dryer to be 0.9%, and 66.7 g of graphene oxide solution was taken and placed in a hydrothermal reactor, and the reaction was performed at 130 ° C for 6h to insert the interlayer water;
[0036] S2. Add 8.1 g of anhydrous FeCl to the solution prepared in step S1 3 , after ultrasonic dispersion for 2h, add 2.9g glucose and 1.8gNaCl respectively, continue ultrasonic dispersion for 1h;
[0037] S3. After drying the sample prepared in step S2, carbonize it under the protection of high-temperature treatment protective gas, and the heating rate per minute is 5°C / min; the maximum temperature is 500°C; the sintering time is 1h; the sample is dispersed in deionized water, and centrifugal washing and drying to obtain Fe 3...
Embodiment 2
[0039] A nano-flaky Fe 3 O 4 The preparation method of the intercalated graphene oxide composite wave absorbing material, the concrete steps are as follows:
[0040] S1. The content of pure graphene oxide (GO) in the graphene oxide solution was measured by a freeze dryer to be 0.5%, and 60 g of graphene oxide solution was taken and placed in a hydrothermal reactor, reacted at 140° C. for 8h and inserted into interlayer water ;
[0041] S2, add 4g FeCl to the solution prepared in step S1 3 , after ultrasonic dispersion for 3h, 1.5g glucose and 0.8g NaCl were added respectively, and ultrasonic dispersion was continued for 1h;
[0042] S3. After drying the sample prepared in step S2, carbonize under the protection of high temperature treatment protective gas, the heating rate per minute is 10°C / min; the maximum temperature is 750°C; the sintering time is 2h; the sample is dispersed in deionized water, and centrifugal washing and drying to obtain Fe 3 O 4 Intercalated graphe...
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