A kind of batio3 crystal with micro-nano hierarchical structure and preparation method thereof
A hierarchical structure, micro-nano technology, applied in chemical instruments and methods, inorganic chemistry, alkaline earth metal titanate, etc., can solve problems such as unstable performance, many impurities, and large particle size
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Embodiment 1
[0030] (1) 2g PVP is dissolved in the n-propanol aqueous solution of 100mL to obtain mixed solution, and Ti(SO 4 ) 2 The aqueous solution is slowly poured into the mixed liquid, hydrolysis reaction occurs under the condition of uniform stirring, and then treated in a water bath at 70°C, and the obtained powder is centrifuged and washed, and aged in a KOH solution with a molar concentration of 1mol / L at 60°C for 12h , TiO was obtained after centrifugation, washing and drying 2 Precursor powder A;
[0031] (2) 0.32g TiO obtained in the above step (1) 2 Precursor powder A was added to 40mL deionized water and mixed evenly to obtain solution B, and then 2.52g Ba(OH) 2 ·8H 2 O was added to 40mL of deionized water and mixed uniformly to obtain solution C, then solution B was poured into solution C to obtain a mixed solution, and the mixed solution was stirred evenly by magnetic force and then placed in a 100mL hydrothermal kettle, sealed with water The kettle was heated at 120°...
Embodiment 2
[0039] (1) 2g PVP is dissolved in the n-propanol aqueous solution of 100mL to obtain mixed solution, and Ti(SO 4 ) 2 The aqueous solution is slowly poured into the mixed liquid, hydrolysis reaction occurs under the condition of uniform stirring, and then treated in a water bath at 70°C, and the obtained powder is centrifuged and washed, and aged in a KOH solution with a molar concentration of 1mol / L at 60°C for 12h , TiO was obtained after centrifugation, washing and drying 2 Precursor powder;
[0040] (2) 0.32g TiO obtained in the above step (1) 2 Precursor powder A was added to 40mL deionized water and mixed evenly to obtain solution B, and then 2.52g Ba(OH) 2 ·8H 2 O was added to 40mL of deionized water and mixed uniformly to obtain solution C, then solution B was poured into solution C to obtain a mixed solution, and the mixed solution was stirred evenly by magnetic force and then placed in a 100mL hydrothermal kettle, sealed with water The kettle was heated at 140°C ...
Embodiment 3
[0045] (1) 2g PVP is dissolved in the n-propanol aqueous solution of 100mL to obtain mixed solution, and Ti(SO 4 ) 2 The aqueous solution is slowly poured into the mixed liquid, hydrolysis reaction occurs under the condition of uniform stirring, and then treated in a water bath at 70°C, and the obtained powder is centrifuged and washed, and aged in a KOH solution with a molar concentration of 1mol / L at 60°C for 12h , TiO was obtained after centrifugation, washing and drying 2 Precursor powder A;
[0046] (2) 0.32g TiO obtained in the above step (1) 2 Precursor powder A was added to 40mL deionized water and mixed evenly to obtain solution B, and then 2.52g Ba(OH) 2 ·8H 2 O was added to 40mL of deionized water and mixed uniformly to obtain solution C, then solution B was poured into solution C to obtain a mixed solution, the mixed solution was stirred evenly by magnetic force and then placed in a 100mL hydrothermal kettle, sealed and heated The kettle was heated at 160°C fo...
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