Nour Alnairat

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Chemist (Master in Applied Physical Chemistry)
Research Assistant at Hamdi Mango Center for Scientific Research/Nanotechnology Center at The University of Jordan.

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Paolo Maggiolini

Università Cattolica del Sacro Cuore (Catholic University of the Sacred Heart)

Zachary J Foster

Lila Yawn

John Cabot University

Abdullah Marouf Ömer

Istanbul 29 Mayis University

Angelos Dalachanis

Centre National de la Recherche Scientifique / French National Centre for Scientific Research

Mohammad Ali Tabataba'i

Institute for Humanities and Cultural Studies

Smadar Lavie

University of California, Davis

Moshe Behar

The University of Manchester

Camille Rouxpetel

Centre National de la Recherche Scientifique / French National Centre for Scientific Research

Nicolet Boekhoff-van der Voort

Radboud University Nijmegen

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Papers by Nour Alnairat

Biosynthesis and Characterization of Zinc Oxide Nanoparticles (ZnO-NPs) Utilizing Banana Peel Extract

Inorganics, Apr 18, 2024

Biosynthesis and Characterization of Zinc Oxide Nanoparticles (ZnO-NPs) Utilizing Banana Peel Ext... more

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Enhanced Properties of PVDF Membranes Using Green Ag-Nanoclay Composite Nanoarchitectonics

Materials research express, Apr 19, 2024

Introduction. Polyvinylidene fluoride (PVDF) is widely used in various industries, particularly i... more Introduction. Polyvinylidene fluoride (PVDF) is widely used in various industries, particularly in water treatment, owing to its effectiveness as an ultrafiltration membrane. Fouling can occur on PVDF membranes during the treatment of aqueous solutions containing natural organic matter in water treatment. Nanofillers can be added to PVDF membranes to improve their durability for more water treatment applications Objectives. This study aimed to enhance the mechanical and anti-biofouling properties of PVDF membranes while maintaining the flux and rejection rates. Methods. A green method was used to synthesize the Ag-Nanoclay nanocomposite for integration into a PVDF polymer membrane. P. argentea extract was employed as a reducing and stabilizing agent for the synthesis of Ag-Nanoclay nanocomposites. The synthesized Ag-Nanoclay nanocomposite was characterized using the X-Ray Diffration (XRD), Fourier-Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscope (SEM). The phase inversion method was used to prepare the PVDF membranes and 1 wt% and 3 wt% Ag-Nanoclay nanocomposite membranes. The structures, morphologies, performances and mechanical and antibacterial proeprties of the prepared membranes were characterized. Results. The synthesized Ag-Nanoclay consisted of Ag Nanoparticles linked to nanoclay platelets with flavonoids from plant extracts. Incorporating the Ag-Nanoclay nanocomposite into the PVDF membrane resulted in minor increases in the pore size, roughness, and hydrophobicity of the membrane. However, these effects did not significantly affect the flux and rejection rates, which showed little improvement. The 1 wt% loading significantly improved the tensile strength by 67%, whereas it decreased by 50% at 3 wt% loading. Both loading levels demonstrated excellent antibacterial activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), with sterilization rates exceeding 99%. Conclusions. Addition of Ag-Nanoclay to PVDF membranes is a promising strategy for developing advanced membranes with improved mechanical properties and anti-biofouling characteristics.

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Antifouling polymeric nanocomposite membrane based on interfacial polymerization of polyamide enhanced with green TiO2 nanoparticles for water desalination

PeerJ Analytical Chemistry

In the present investigation, the preparation and characterization of polyamide/TiO2 as thin film... more In the present investigation, the preparation and characterization of polyamide/TiO2 as thin film nanocomposites (TFN) for brackish water desalination was investigated. TiO2 nanoparticles (NPs) were synthesized by a green method using thyme plant extract as a reducing and capping agent. The TiO2 NPs was successfully prepared in pure crystalline anatase phase with 15 nm size, and −33.1 mV zeta potential. The antimicrobial tests confirmed the antimicrobial activity of TiO2 against gram-positive and gram-negative bacteria. In addition, TiO2 NPs showed a good photocatalytic activity in degradation of methylene blue dye. TFN based on interfacial polymerization was enhanced by embedding 5% of the greenly synthesized TiO2 NPs within the polyamide thin film active layer. The incorporation of TiO2 NPs was confirmed by SEM, atomic force microscope (AFM), surface wettability, and FTIR. Membranes performance was investigated based on flux, salt rejection and fouling resistance. The antifouling ...

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Cellulose Acetate Membranes: Fouling Types and Antifouling Strategies—A Brief Review

by Ghada Halaweh and Nour Alnairat

Processes

Cellulose acetate (CA) is a semisynthetic, biodegradable polymer. Due to its characteristics, CA ... more Cellulose acetate (CA) is a semisynthetic, biodegradable polymer. Due to its characteristics, CA has several applications, including water membranes, filament-forming matrices, biomedical nanocomposites, household tools, and photographic films. This review deals with topics related to the CA membranes, which are prepared using different techniques, such as the phase inversion technique. CA membranes are considered very important since they can be used as microfiltration membranes (MF), ultrafiltration membranes (UF), nanofiltration membranes (NF), reverse osmosis (RO) membranes, and forward osmosis (FO) membranes. Membrane fouling results from the accumulation of materials that the membrane rejects on the surface or in the membrane’s pores, lowering the membrane’s flux and rejection rates. There are various forms of CA membrane fouling, for instance, organic, inorganic, particulate fouling, and biofouling. In this review, strategies used for CA membrane antifouling are discussed and...

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Cellulose Acetate Membranes: Fouling Types and Antifouling Strategies—A Brief Review

by Nour Alnairat and Ghada Halaweh

Processes

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Green Synthesis of Silver Nanoparticles as an Effective Antibiofouling Material for Polyvinylidene Fluoride (PVDF) Ultrafiltration Membrane

Polymers

Silver nanoparticles (AgNPs) were successfully synthesized using the aqueous extract of the Paron... more Silver nanoparticles (AgNPs) were successfully synthesized using the aqueous extract of the Paronychia Argentea Lam (P. Argentea) wild plant. The results showed that the conversion of Ag+ to Ag0 nanoparticles ratio reached 96.5% as determined by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES), with a negative zeta potential (ζ) of −21.3 ± 7.68 mV of AgNPs expected to improve the stability of synthesized AgNPs. AgNP antibacterial activity has been examined against Streptococcus aureus (S. aureus) and Escherichia coli (E. coli) bacteria. The minimum inhibition concentration (MIC) was 4.9 µL/mL for both E. coli and S. aureus bacteria, while the minimum bactericidal concentrations (MBC) were 19.9 µL/mL and 4.9 µL/mL for S. aureus and E. coli, respectively. The synthesized AgNPs were incorporated in ultrafiltration polyvinylidene Fluoride (PVDF) membranes and showed remarkable antibiofouling behavior against both bacterial strains. The membranes were characterized using...

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Biosynthesis and Characterization of Zinc Oxide Nanoparticles (ZnO-NPs) Utilizing Banana Peel Extract

Inorganics, Apr 18, 2024

Biosynthesis and Characterization of Zinc Oxide Nanoparticles (ZnO-NPs) Utilizing Banana Peel Ext... more

Download

Enhanced Properties of PVDF Membranes Using Green Ag-Nanoclay Composite Nanoarchitectonics

Materials research express, Apr 19, 2024

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Antifouling polymeric nanocomposite membrane based on interfacial polymerization of polyamide enhanced with green TiO2 nanoparticles for water desalination

PeerJ Analytical Chemistry

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Cellulose Acetate Membranes: Fouling Types and Antifouling Strategies—A Brief Review