用于高效过滤水包油乳液的多孔、烧结及反应结合氮化硅（SRBSN）平面膜的制备

Preparation of a Porous, Sintered and Reaction-Bonded Si₃N₄ (SRBSN) Planar Membrane for Filtration of an Oil-in-Water Emulsion with High Flux Performance.

作者信息

Li Lin, Gao Er-Ze, Abadikhah Hamidreza, Wang Jun-Wei, Hao Lu-Yuan, Xu Xin, Agathopoulos Simeon

机构信息

Chinese Academy of Sciences Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China.

Materials Science and Engineering Department, University of Ioannina, GR-451 10 Ioannina, Greece.

出版信息

Materials (Basel). 2018 Jun 11;11(6):990. doi: 10.3390/ma11060990.

A porous, sintered, and reaction-bonded Si₃N₄ (SRBSN) planar membrane was prepared by phase-inversion tape-casting, nitridation (at 1350 °C), and sintering (at 1650 °C) of silicon slurry. The membrane was comprised of uniform rod-like β-Si₃N₄ crystals with a large length/diameter ratio and had high porosity and bending strength. The prepared membrane features a typical asymmetric structure with a skin layer, a sponge layer, and finger-like voids and an average pore size of 0.61 μm. A high permeation flux of 367 L m h and an oil rejection of 88.6% were recorded in oil-in-water emulsion separation experiments. These results suggest that SRBSN membranes have excellent potential for the treatment of oily wastewater.