Multifunctional CNTs-PAA/MIL101(Fe)@Pt Composite Membrane for High-throughput Oily Wastewater Remediation

• Published in: Journal of hazardous materials Vol. 403; p. 123547
• Main Authors: Liu, Chaohui, Xia, Junyuan, Gu, Jincui, Wang, Wenqin, Liu, Qingquan, Yan, Luke, Chen, Tao
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 05.02.2021
• Subjects: CNTs-PAA membrane; MIL101(Fe)@Pt NPs; Stability; Synergistic separation; Versatility; CNTs-PAA membrane; Synergistic separation; Stability; MIL101(Fe)@Pt NPs; Versatility
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/j.jhazmat.2020.123547

•A CNTs-based membrane has been presented for purifying oily waste water.•Its flux has exceeded most of the multifunctional separation membranes previously reported.•It has shown excellent physical and chemical stability. 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−2 h-1 bar-1, 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.