Photothermal conversion absorbing membrane system and sol-gel preparation method thereof
A light-to-heat conversion and absorption film technology, which is applied in chemical instruments and methods, heating devices, solar thermal devices, etc., can solve the problems of increasing the complexity of the film preparation process, the cost of film preparation, the high cost of film preparation, and the existence of danger , to achieve the effect of simple preparation method, low equipment requirements and low cost
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Embodiment 1
[0027] best practice
[0028] 1. Take 50mL of absolute ethanol, add 4mL of acetylacetone and 11.6g of nickel nitrate hexahydrate in sequence under stirring, and stir for 1 hour to obtain a 0.8mol / L nickel sol.
[0029] 2. Take 20mL of 0.8mol / L nickel sol, and add 12mL of absolute ethanol under stirring to obtain a nickel sol with a concentration of 0.5mol / L.
[0030] 3. Add 8.2g of aluminum isopropoxide powder into 50mL of absolute ethanol, reflux with stirring and raise the temperature to 70°C, continue to stir and reflux for 1h, add 5mL of acetylacetone and 10.3mL of HCl, stir and reflux for 3h to obtain 0.8mol / L aluminum sol.
[0031] 4. Take 20mL of 0.8mol / L aluminum sol, and add 12mL of absolute ethanol under stirring to obtain an aluminum sol with a concentration of 0.5mol / L.
[0032]5. Add 10.4mL tetraethyl orthosilicate to 10mL absolute ethanol at room temperature and mix well, then continue to drop 3.6mL aqueous solution containing 0.06wt% HCl to it, and stir in a...
Embodiment 2
[0040] 1. Take 50mL of absolute ethanol, add 4mL of acetylacetone and 10.0g of cobalt acetate tetrahydrate in sequence under stirring, and stir for 1 hour to obtain 0.8mol / L cobalt sol.
[0041] 2. Take 20mL of 0.8mol / L cobalt sol, and add 12mL of absolute ethanol under stirring to obtain a cobalt sol with a concentration of 0.5mol / L.
[0042] 3. Add 8.2g of aluminum isopropoxide powder into 50mL of absolute ethanol, reflux with stirring and raise the temperature to 70°C, continue to stir and reflux for 1h, add 5mL of acetylacetone and 10.3mL of HCl, stir and reflux for 3h to obtain 0.8mol / L Aluminum sol.
[0043] 4. Take 20mL of 0.8mol / L aluminum sol, and add 12mL of absolute ethanol under stirring to obtain an aluminum sol with a concentration of 0.5mol / L.
[0044] 5. Add 10.4mL tetraethyl orthosilicate to 10mL absolute ethanol at room temperature and mix well, then continue to drop 3.6mL aqueous solution containing 0.06wt% HCl to it, and stir in a closed container for 24h ...
Embodiment 3
[0052] 1. Take 50mL of absolute ethanol, add 4mL of acetylacetone and 6.8g of copper chloride dihydrate in sequence under stirring, and stir for 1 hour to obtain 0.8mol / L copper sol.
[0053] 2. Take 20mL of 0.8mol / L copper sol, and add 12mL of absolute ethanol under stirring to obtain a copper sol with a concentration of 0.5mol / L.
[0054] 3. Add 8.2g of aluminum isopropoxide powder into 50mL of absolute ethanol, reflux with stirring and raise the temperature to 70°C, continue to stir and reflux for 1h, add 5mL of acetylacetone and 10.3mL of HCl, stir and reflux for 3h to obtain 0.8mol / L Aluminum sol.
[0055] 4. Take 20mL of 0.8mol / L aluminum sol, and add 12mL of absolute ethanol under stirring to obtain an aluminum sol with a concentration of 0.5mol / L. .
[0056] 5. Add 10.4mL tetraethyl orthosilicate to 10mL absolute ethanol at room temperature and mix well, then continue to drop 3.6mL aqueous solution containing 0.06wt% HCl to it, and stir in a closed container for 24h ...
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