Bi0.90Er0.10Fe0.96Co0.02Mn0.02O3/Mn(1-x)CoxFe2O4 composite film and preparation method thereof
A technology of mn1-xcoxfe2o4 and composite film, which is applied in the field of functional materials, can solve the problems of large leakage current, limited development, and difficulty in obtaining polarization curves, etc., and achieve the goal of reducing leakage conduction current, reducing defects, and reducing oxygen vacancy content Effect
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Embodiment 1
[0033] Step 1, dissolving ferric nitrate and manganese acetate in a molar ratio of 2:1 in ethylene glycol methyl ether (x=0), then adding acetic anhydride to obtain a stable MnFe with a total metal ion concentration of 0.2mol / L 2 o 4 Precursor solution, wherein the volume ratio of ethylene glycol methyl ether and acetic anhydride is 3:1;
[0034] Step 2, bismuth nitrate, ferric nitrate, erbium nitrate, cobalt nitrate and manganese acetate are dissolved in the solvent (excessive bismuth nitrate) to obtain a total concentration of metal ions of 0.945:0.96:0.10:0.02:0.02. Stable Bi of L 0.90 Er 0.10 Fe 0.96 co 0.02 mn 0.02 o 3 Precursor solution, the volume ratio of ethylene glycol methyl ether and acetic anhydride is 3:1;
[0035] Step 3: Select the FTO / glass substrate as the substrate, place the cut FTO / glass substrate in detergent, acetone, and ethanol in sequence, and use ultrasonic cleaning. After each ultrasonic cleaning for 10 minutes, rinse the substrate with a lar...
Embodiment 2
[0040] Step 1, dissolve ferric nitrate, cobalt nitrate and manganese acetate in a molar ratio of 2:0.2:0.8 in ethylene glycol methyl ether (x=0.2), then add acetic anhydride to obtain a total metal ion concentration of 0.2mol / L The stable Mn 0.8 co 0.2 Fe 2 o 4 Precursor solution, wherein the volume ratio of ethylene glycol methyl ether and acetic anhydride is 3:1;
[0041] Step 2, bismuth nitrate, ferric nitrate, erbium nitrate, cobalt nitrate and manganese acetate are dissolved in the solvent (excessive bismuth nitrate) to obtain a total concentration of metal ions of 0.945:0.96:0.10:0.02:0.02. Stable Bi of L 0.90 Er 0.10 Fe 0.96 co 0.02 mn 0.02 o 3 Precursor solution, the volume ratio of ethylene glycol methyl ether and acetic anhydride is 3:1;
[0042] Step 3: Select the FTO / glass substrate as the substrate, place the cut FTO / glass substrate in detergent, acetone, and ethanol in sequence, and use ultrasonic cleaning. After each ultrasonic cleaning for 10 minutes,...
Embodiment 3
[0047] Step 1, dissolve ferric nitrate, cobalt nitrate and manganese acetate in a molar ratio of 2:0.4:0.6 in ethylene glycol methyl ether (x=0.4), then add acetic anhydride to obtain a total metal ion concentration of 0.2mol / L The stable Mn 0.6 co 0.4 Fe 2 o 4 Precursor solution, wherein the volume ratio of ethylene glycol methyl ether and acetic anhydride is 3:1;
[0048] Step 2, bismuth nitrate, ferric nitrate, erbium nitrate, cobalt nitrate and manganese acetate are dissolved in the solvent (excessive bismuth nitrate) to obtain a total concentration of metal ions of 0.945:0.96:0.10:0.02:0.02. Stable Bi of L 0.90 Er 0.10 Fe 0.96 co 0.02 mn 0.02 o 3 Precursor solution, the volume ratio of ethylene glycol methyl ether and acetic anhydride is 3:1;
[0049] Step 3: Select the FTO / glass substrate as the substrate, place the cut FTO / glass substrate in detergent, acetone, and ethanol in sequence, and use ultrasonic cleaning. After each ultrasonic cleaning for 10 minutes,...
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