蔗糖溶液

Abstract(#br)This work revolves around the use of porous metal hollow fibers in membrane distillation. Various stages are covered, starting from membrane synthesis up to the testing of a pilot scale membrane module. Mechanically stable metal hollow fibers have been synthesized by phase inversion of a stainless steel particle loaded polymer solution, followed by thermal treatment to remove the polymer and sinter the particles together. The pore surface of the metal fibers has been made hydrophobic by functionalization with polydimethylsiloxane or stearic acid.

用于各种应用的新型纳米结构复盖功能表面的制备近年来备受关注。利用飞秒( fs )激光可以在蔗糖溶液中铝膜表面诱导出大面积随机分布的纳米尖晶石，其分布密度随激光脉冲能量和蔗糖与水的质量比而变化。经聚二甲基硅氧烷( PDMS )改性后的铝膜具有润湿性可调、水下超亲油性( ~ 0 ° )、超疏水( ~ 155.3 ° )、高附着力和环境稳定性等特点。进一步，在空气中Al膜一侧采用fs激光直写( LDW )，然后在蔗糖溶液中诱导纳米尖晶石，另一侧采用PDMS改性，制备了油水分离过滤器。经过上述处理后，该过滤器具有类似‘荷花效应’的低水附着力，可用于高效( 99.61 %   ~   99.63 % )和可回收油水分离。此外，滤池在空气中暴露7  个月以上仍保持较高的油水分离效率( 99.46 %   ~ 99.57 % )，表现出较强的环境稳定性。这种由fs激光制备的功能滤波器可应用于化工产品的分离过程、生物医学装置和环境保护等领域。