bserve and study the detailed dispersibility and distribution of zeolite nanoparticles in polyamide layers to avoid the non-selective defects. Besides, the post-treatment of TFC membranes by glycerol solutions is an effective way to enhance the membrane separation performance [35].Asaresult,theeffectsofpost-treatmentprocessontheproperties of zeolite-filled TFN membranes is also worth studying. In this study, NaY zeolite nanoparticles were synthesized via the hydrothermal method. The framework structure, particle diameter, and elemental composition of the synthesized zeolite nanoparticles were characterized by X-ray powder diffraction (XRD), dynamic light scattering (DLS), and X-ray photoelectron spectroscopy (XPS), respectively. The TFN membranes were prepared byadding NaY zeolite nanoparticles in amine solution in the interfacial polymerization (IP) process. Scanning electron microscopy (SEM) and attenuated total reflectance infra-red (ATR-IR) were employed to investigate the membrane morphology and composition. Transmission electron microscope (TEM) was used to observe the isolated polyamide thin film layer and determine the dispersion and distribution of zeolite nanoparticles in polyamide. Contact angles of deionized water were measured on air-dried samples of synthesized TFN membranes with different zeolite loadings to verify the hydrophilicity of the membranes. The effects of IP reaction time and zeolite loading were evaluated by using brackish water desalination tests with 2000 ppm NaCl solution at 225 psi (1.55 MPa) and 25 1C. After the membrane preparation conditions were optimized, the post-treatment using glycerol solutions containing camphorsulfonic acid-triethylamine salt was investigated to further improve the water flux of TFN membranes. For the post-treatment, the effects of heat-treatment time and solution composition on TFN membrane separation performance were studied.