membrane surface

nanofiltration nf

composite membrane

water permeance

nanofibrous membranes

cellulose membranes

composite membranes

Separation and Purification Technology

Efficient removal of dyes, antibiotic, and protein by MoS 2 /O-MWCNTs/PES blended membrane. • Synthesis of MoS 2 /O-MWCNTs nanocomposite using hydrothermal method. • Modification of PES membrane performance by MoS 2 /O-MWCNTs nanocomposite. • Efficient removal of dye, antibiotic, and protein by 0.75 wt% MoS 2 /O-MWCNTs/PES. In this work, a nanocomposite of MoS 2 nanosheets and oxidized multi-walled carbon nanotubes (O-MWCNTs) was prepared using the hydrothermal method. The successful synthesis of the MoS 2 /O-MWCNTs nanocomposite was further confirmed using a scanning electron microscope (SEM), energy dispersive X-Ray dot mapping, and X-ray diffraction analysis. The synthesized nanocomposite was used as a nanoadditive for the improvement of polyethersulfone (PES) polymeric membrane. The phase inversion route was used to prepare MoS 2 /O-MWCNTs blended membranes containing different amounts of nanocomposite (0–1 wt%). The morphology of the prepared membranes was studied using SEM and atomic force microscopy techniques. Asymmetric structure with small pores at the top layer and well-developed large finger-like pores and macro voids at the sublayer can be observed in fabricated membranes. The hydrophilicity enhancement of the PES membrane in the existence of nanocomposite was verified by the contact angle test. The modified membrane containing 0.75 wt% of MoS 2 /O-MWCNTs exhibited improved permeability of 64.1 L/m 2 h bar, and high pollutants removal of 93.5% for reactive blue 19, 97.5% for rifampicin, 98.4% for reactive red 195, and 99% for bovine serum albumin, with enhanced flux recovery ratio of 60.8%. Moreover, the stability of the blended membrane in the long-time operation makes it a promising candidate to be applied in the treatment of textile and industrial wastewaters.

Development of MoS2/O-MWCNTs/PES blended membrane for efficient removal of dyes, antibiotic, and protein