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- W3207064120 abstract "α-Al2O3 has attracted much attention owing to its excellent organic solvent resistance and acid-base corrosion resistance. However, the preparation of α-Al2O3 ultrafiltration membranes by sol-gel method is still a challenge, because the formation of α-phase requires high temperature calcination and is accompanied by rapid grain growth. To reduce the phase transition temperature and obtain smaller grains, we started from a polymeric sol with particle size of approximately 3.7 nm, which was converted into α-Al2O3 at a low temperature of 1000 °C. Moreover, graphene oxide (GO) as the sacrificial layer was used to prevent the sol from penetrating into the macroporous support, and to obtain a high permeability α-Al2O3 ultrafiltration membrane. Because GO can be pyrolyzed at temperature above 500 °C, an ultra-thin and high pure water permeability α-Al2O3 ultrafiltration membrane was obtained at a low temperature of 1000 °C. The prepared α-Al2O3 ultrafiltration membrane showed a pure water permeability of up to 390 L m−2 h−1 bar−1 and a pore size of approximately 20 nm." @default.
- W3207064120 created "2021-10-25" @default.
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- W3207064120 date "2022-02-01" @default.
- W3207064120 modified "2023-09-25" @default.
- W3207064120 title "A new method for preparing α-alumina ultrafiltration membrane at low sintering temperature" @default.
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- W3207064120 doi "https://doi.org/10.1016/j.memsci.2021.119992" @default.
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