Polymer Materials & Engineering Department, School of Materials Science & Engineering, Chang' an University, Xi'an, 710064, China.
Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science, Ningbo 315201, China.
J Hazard Mater. 2021 Feb 5;403:123547. doi: 10.1016/j.jhazmat.2020.123547. Epub 2020 Aug 11.
A surge of effort has been devoted to establishing super-wetting membranes with versatility for oily waste water purification. However, persistent challenge remains the lower separation flux. Moreover, the majorities of catalysts are only adsorbed on the surface and easily fall off after multiple cyclic separations. In this work, an effective strategy has been taken to construct a composite membrane consisting of polyacrylic acid functionalized carbon nanotubes (CNTs-PAA) and MIL101(Fe)@platinum nanoparticles (MIL101(Fe)@Pt NPs). The obtained CNTs-PAA/MIL101(Fe)@Pt composite membrane can achieve degradation of dye molecules and at the same time effective separation of oil-in-water emulsions. The separation throughput of this composite membrane can reach up to 11000 L m h bar, which has exceeded most of the previous reported multifunctional separation membranes. Furthermore, this composite membrane has presented stable mechanical property and excellent anti-corrosion ability. This work gives comprehensive consideration to excellent separation performance, versatility and stability, which could have potential applications in practical oily wastewater treatment.
人们投入大量精力来开发具有通用性的超润湿膜，以实现含油废水的净化。然而，目前仍然面临着分离通量较低的挑战。此外，大多数催化剂仅吸附在表面上，在多次循环分离后容易脱落。在这项工作中，我们采取了一种有效的策略，构建了一种由聚丙烯酸功能化碳纳米管（CNTs-PAA）和 MIL101(Fe)@铂纳米粒子（MIL101(Fe)@Pt NPs）组成的复合膜。所得到的 CNTs-PAA/MIL101(Fe)@Pt 复合膜不仅可以实现染料分子的降解，同时还可以有效地分离水包油乳液。该复合膜的分离通量高达 11000 L m h bar，超过了大多数先前报道的多功能分离膜。此外，该复合膜还具有稳定的机械性能和优异的耐腐蚀性。这项工作综合考虑了优异的分离性能、通用性和稳定性，在实际含油废水处理方面具有潜在的应用前景。
