Fe2O3@MXene composite powder and preparation method thereof
A composite powder, fe2o3 technology, applied in the field of wave-absorbing materials, can solve problems such as poor high temperature resistance, high reflection loss, and narrow absorption frequency band, and achieve the effects of low preparation cost, improved wave-absorbing ability, and short production cycle
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[0044] A kind of Fe provided by the invention 2 o 3 The preparation method of @MXene composite powder comprises the following steps:
[0045] Step 1, the Fe 2 o 3 Mix with MXene powder at a molar ratio of (1~3):1, and stir at room temperature for 0.5h to make Fe 2 o 3 Mix well with MXene powder;
[0046] Step 2, the mixed composite material is placed at room temperature and dried to constant weight to obtain Fe 2 o 3 @MXene composite powder.
[0047] Wherein, the preparation of MXene powder comprises the following steps:
[0048] S1, weigh 3g of titanium aluminum carbon with an electronic balance, slowly add it to 60ml of hydrofluoric acid with a concentration of 40%, place it on a magnetic stirrer, and stir at a constant temperature of 35°C for 24h;
[0049] S2, ultrasonic cleaning the stirred mixed solution at 35°C for 60 minutes;
[0050] S3, then the ultrasonically cleaned mixed solution was centrifuged four times with deionized water until the pH was neutral, an...
Embodiment 1
[0065] direct mixing
[0066] 1. Preparation of MXene powder
[0067] (a) Weigh 3g of titanium aluminum carbon with an electronic balance, slowly add it to 60ml of hydrofluoric acid with a concentration of 40%, place it on a magnetic stirrer, and stir at a constant temperature of 35°C for 24h;
[0068] (b) Ultrasonic cleaning the stirred mixed solution for 60 min at 35°C;
[0069] (c) Then the ultrasonically cleaned mixed solution was centrifuged four times with deionized water until the pH was close to neutral, and then dried at room temperature to obtain MXene powder;
[0070] 2. Preparation of Fe2O3 powder
[0071] (a) Weigh 60g deionized water and 32g absolute ethanol respectively with an electronic balance, and mix the two as solvent;
[0072] (b) Then weigh 21.014g of citric acid and 40.4g of ferric nitrate and add them into the solvent, place them on a magnetic stirrer and stir to dissolve to configure the precursor, and stir at a constant temperature of 85°C until w...
Embodiment 2
[0077] one-step solvothermal method
[0078] 1. Preparation of MXene powder;
[0079] (a) Weigh 3g of titanium aluminum carbon with an electronic balance, slowly add it to 60ml of hydrofluoric acid with a concentration of 40%, place it on a magnetic stirrer, and stir at a constant temperature of 35°C for 24h;
[0080] (b) Ultrasonic cleaning the stirred mixed solution for 60 min at 35°C;
[0081] (c) Then, the ultrasonically cleaned mixed solution was centrifuged four times with deionized water until the pH was neutral, and then dried at room temperature to obtain MXene powder;
[0082] 2. Weigh 0.168g (1mmol) MXene powder with an electronic balance and add it to 60ml DMF (N,N-dimethylformamide, analytically pure), ultrasonically wash for 2 hours to obtain MXene dispersion, and prepare 3 dispersions of the same composition ;
[0083] 3. Weigh 0.404g (1mmol), 0.808g (2mmol), and 1.212g (3mmol) of Fe(NO3)3 9H2O respectively with an electronic balance, add them to the dispersi...
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