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Fe2O3-doped SnO2 membranes with enhanced mechanical resistance for ultrafiltration application
Journal of the European Ceramic Society ( IF 5.8 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.jeurceramsoc.2020.06.077
Debora C.O.S. Neves , Andre L. da Silva , Roberto Cesar de Oliveira Romano , Douglas Gouvêa

Fe2O3-doped SnO2 ceramic membranes were fabricated by an innovative approach based on interface segregation. The membranes exhibited outstanding mechanical resistance, which was attributed to doping-induced increase in the grain boundary interface area and decrease in the crystallite size. The membranes were sintered at different temperatures from 500 °C to 1000 °C. Most pore diameters were in the range of 0.01-0.1 µm, and the pore diameters of both doped and undoped membranes could be well controlled by adjusting the sintering temperature without any sacrificial material. The permeability results showed that the membranes could be used for nano-, ultra-, and microfiltration applications. The mechanical resistance of Fe2O3-doped SnO2 membranes was around three times higher than that of pristine SnO2 membranes. The compressive strength of the doped SnO2 membranes sintered at 1000 °C was 26.8 MPa, while that of the undoped membranes was 10.1 MPa.



中文翻译:

Fe 2 O 3掺杂的SnO 2膜具有增强的机械阻力,可用于超滤应用

通过基于界面隔离的创新方法,制备了掺杂Fe 2 O 3的SnO 2陶瓷膜。该膜表现出优异的机械阻力,这归因于掺杂引起的晶界界面面积的增加和晶粒尺寸的减小。将膜在500°C至1000°C的不同温度下烧结。大多数孔径在0.01-0.1μm的范围内,并且可以通过调节烧结温度而无需任何牺牲材料来很好地控制掺杂膜和非掺杂膜的孔径。渗透性结果表明,该膜可用于纳滤,超滤和微滤应用。Fe 2 O的机械电阻3掺杂SnO 2膜比原始SnO 2膜高约三倍。在1000℃下烧结的掺杂SnO 2膜的抗压强度为26.8MPa,而未掺杂膜的抗压强度为10.1MPa。

更新日期:2020-07-01
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