文獻名：Robust ceramic nanofibrous membranes with ultra-high water flux and nanoparticle rejection for self-standing ultrafiltration
作者： Juan Jianga， Na Nibc， Weiwei Xiaoc， Xiaofeng Zhaoa， Fangwei Guoa， Xiaohui Fana， Qi Dingc， Wei Haoa， Ping Xiaoa
aSchool of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
bKey Lab of Education Ministry for Power Machinery and Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
cGas Turbine Research Institute, Shanghai Jiao Tong University, Shanghai 200240, China
摘要：Ceramic electrospun nanofibrous membranes (ENMs) are ideal candidates for ultrafiltration applications in harsh environments. However, it has been a great challenge to fabricate ceramic ENMs with sufficient strengths to withstand the water pressure duo to their intrinsic brittleness. In this study, we report an ultra-strong Y3Al5O12-Al2O3 ENM employing graphene oxide (GO) as a sacrificing additive for the first time. The optimized membrane exhibits tensile strengths of 5.63 ± 0.31 MPa after sintering at 900 °C and 3.48 ± 0.44 MPa at 1000 °C. The high strength of the membrane ensures it to be used independently under a pressure up to 160 K Pa. An excellent nano-particle filtration performance is achieved with a high permeation flux of 5718–8494 L m−2 h−1 bar−1 and high rejection efficiencies above 99.75 % in both neutral and acidic water conditions. The work demonstrates a facile route for effective strengthening of ceramic ENMs with their great potential in harsh-environment self-standing ultrafiltration applications.
關(guān)鍵詞：Y3Al5O12-Al2O3 nanofibrous membranes；Graphene-Oxide (GO)；Enhanced strength；Ultra-high water flux；Nanoparticle rejection
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