Ordered meso-porous (TiO2-Cu) nanocomplex and its hydrothermal supercritical extraction preparation technology
A nanocomposite and preparation process technology are applied in the field of ordered mesoporous TiO2-Cu nanocomposite and hydrothermal supercritical extraction preparation technology, which can solve the problems of pore collapse and specific surface area reduction of synthetic materials, and achieve production cost. The effect of low, large specific surface area and high photocatalytic performance
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Embodiment 1
[0036] Embodiment 1: first adopt the hydrothermal method, put 60g of titanium tetrachloride and 2g of copper nitrate with a purity of 99.0% into a three-necked flask, and stir evenly with a GS122 type electronic constant speed stirrer; After ammonium bromide (30g), 160g distilled water and concentrated hydrochloric acid are mixed, slowly drip in the there-necked flask through the separating funnel, control pH value between 1-3, titanium tetrachloride forms " surfactant- Inorganic matter” precipitates; then, put 20g of “surfactant-inorganic matter” into a supercritical kettle, heat up to 100°C at a heating rate of 2°C / min, and keep the pressure at 9MPa for 12h; then put the supercritical kettle Cooled to room temperature, ordered mesoporous "TiO 2 -Cu" nanocomposites; finally, the obtained ordered mesoporous "TiO 2 -Cu" nanocomposite was rinsed with distilled water for 4 times. Its crystal form is anatase, the nanoparticle pore size is 2-5nm, and the specific surface area is 8...
Embodiment 2
[0037] Embodiment 2: first adopt the hydrothermal method, put 60g of titanium tetrachloride and 2g of copper nitrate with a purity of 99.0% into a three-necked flask, and stir evenly with a GS122 type electronic constant speed stirrer; secondly, dodecyl trichloride Methyl ammonium bromide (35g), after mixing 160g distilled water and concentrated hydrochloric acid, slowly drop into the there-necked flask through the separatory funnel, control the pH value between 1-3, titanium tetrachloride forms "surfactant" by hydrolysis reaction -precipitation of inorganic matter; then, put 20g of "surfactant-inorganic matter" into a supercritical kettle, raise the temperature to 100°C according to the heating rate of 2°C / min, and keep the pressure at 9MPa for 12h; then put the supercritical The kettle was cooled to room temperature, and the ordered mesoporous "TiO 2 -Cu" nanocomposites; finally, the obtained ordered mesoporous "TiO 2 -Cu" nanocomposite was rinsed with distilled water for 4...
Embodiment 3
[0038] Embodiment 3: first adopt the hydrothermal method, put 60g of titanium tetrachloride and 2g of copper nitrate with a purity of 99.0% into a three-necked flask, and stir evenly with a GS122 type electronic constant speed stirrer; secondly, dodecyl trichloride Methyl ammonium bromide (28g), after mixing 160g distilled water and concentrated hydrochloric acid, slowly drip into the there-necked flask through the separatory funnel, control the pH value between 1-3, titanium tetrachloride forms "surfactant" by hydrolysis reaction -precipitation of inorganic matter; then, put 30g of "surfactant-inorganic matter" into a supercritical kettle, raise the temperature to 100°C according to the heating rate of 2°C / min, and keep the pressure at 9MPa for 12h; then put the supercritical The kettle was cooled to room temperature, and the ordered mesoporous "TiO 2 -Cu" nanocomposites; finally, the obtained ordered mesoporous "TiO 2 -Cu" nanocomposite was rinsed with distilled water for 4...
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Abstract
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