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- W2385524832 abstract "Highly doped CuO/SiO2 composite aerogels were prepared via a propylene oxide pre-reaction method with acetonitrile as solvent.In a typical synthesis process,tetramethoxysilane(TMOS),acetonitrile, deionized water,and propylene oxide were mixed together for pre-reaction.The solutions were then mixed with a CuCl2 acetonitrile-water solution,with added propylene oxide.The mixed solutions were transformed to the wet gels after being kept in the oven for 0.5 h at 35°C.The dark monolithic CuO/SiO2 composite aerogels were obtained after drying with supercritical CO2 and following thermal treatment.The density, specific surface area,average doping concentration,and compression modulus of the final aerogel samples were about 180 mg·cm -3 ,625 m 2 ·g -1 ,19.91%±2.42%(Cu:Si molar ratio),and 1.639 MPa, respectively.The aerogels,which were ideal materials for backlight targets,featured good formability and uniform dispersion.The gelation mechanism was also discussed by comparing our typical synthetic process with reference experiments.The results demonstrated that the reaction rates of the two precursors were balanced by changing the solvent and using the propylene oxide pre-reaction method,which realized the co-gelation.In addition,the method may inspire new synthetic ideas for preparation of other metal-oxide/silica composite aerogels." @default.
- W2385524832 created "2016-06-24" @default.
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- W2385524832 date "2012-01-01" @default.
- W2385524832 modified "2023-09-25" @default.
- W2385524832 title "Rapid Preparation of Highly Doped CuO/SiO_2 Composite Aerogels" @default.
- W2385524832 hasPublicationYear "2012" @default.
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