Polyoxometalate based thin film nanocomposite forward osmosis membrane: Superhydrophilic, anti-fouling, and high water permeable

Shakeri, Alireza; Salehi, Hasan; Ghorbani, Farnaz; Amini, Mojtaba; Naslhajian, Hadi

doi:10.1016/j.jcis.2018.10.069

Cited by 81 publications

(35 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generally, during the formation of fouling layers on the membrane surface can beg and generate the back diffusion of dissolved salt ions which generates an increase in the concentration of salt ions on the side of the membrane surface. Results revealed that the membrane performcae may change due to organic and inorganic matter in water during osmosis process, which needs to tackle by modifying the membrane with advanced material (Anis et al, 2019;Badruzzaman et al, 2019;Croll et al, 2019;Ghaemi and Khodakarami, 2019;Ghaseminezhad et al, 2019;Joseph and Damodaran, 2019;Liu et al, 2019;Nguyen et al, 2019;Rehman et al, 2019;Shakeri et al, 2019;Tang et al, 2019;Weinman et al, 2019;Zou et al, 2019).…”

Section: Atomic Absorption Spectrometry (Aas) Resultsmentioning

confidence: 99%

Characterization of seawater reverse osmosis fouled membranes from large scale commercial desalination plant

Int¹

2019

Preprint

View full text Add to dashboard Cite

The objective of this work is to study the ageing state of a used reverse osmosis (RO) membrane taken in Algeria from the Benisaf Water Company seawater desalination unit. The study consists of an autopsy procedure used to perform a chain of analyses on a membrane sheet. Wear of the membrane is characterized by a degradation of its performance due to a significant increase in hydraulic permeability (25%) and pressure drop as well as a decrease in salt retention (10% to 30%). In most cases the effects of ageing are little or poorly known at the local level and global measurements such as (flux, transmembrane pressure, permeate flow, retention rate, etc.) do not allow characterization. Therefore, a used RO (reverse osmosis) membrane was selected at the site to perform the membrane autopsy tests. These tests make it possible to analyze and identify the cause as well as to understand the links between performance degradation observed at the macroscopic scale and at the scale at which ageing takes place. External and internal visual observations allow seeing the state of degradation. Microscopic analysis of the used membranes surface shows the importance of fouling. In addition, quantification and identification analyses determine a high fouling rate in the used membrane whose foulants is of inorganic and organic nature. Moreover, the analyses proved the presence of a biofilm composed of protein.

show abstract

Section: Atomic Absorption Spectrometry (Aas) Resultsmentioning

confidence: 99%

Characterization of seawater reverse osmosis fouled membranes from large scale commercial desalination plant

Int¹

2019

Preprint

View full text Add to dashboard Cite

show abstract

“…Apart from the aforementioned applications, using POMs in the structure of membranes for water desalination has gained less attention. In one report, Shakeri et al could successfully functionalize the surface of silica nanoparticles by quaternary ammonium groups and coat with superhydrophilic wheel polyoxometalates (POM) to prepare new TFN membranes . In another study, the same research group fabricated a novel type of polyoxometalate based open‐frameworks (POM‐OFs) by using blue lemon and tetrabutylammonium bromide and embedded in the structure of polyamide active layer through interfacial polymerization to prepare hydrophilic and high water permeable thin‐film nanocomposite (TFN) membranes …”

Section: Introductionmentioning

confidence: 99%

“…In one report, Shakeri et al could successfully functionalize the surface of silica nanoparticles by quaternary ammonium groups and coat with superhydrophilic wheel polyoxometalates (POM) to prepare new TFN membranes. [20] In another study, the same research group fabricated a novel type of polyoxometalate based open-frameworks (POM-OFs) by using blue lemon and tetrabutylammonium bromide and embedded in the structure of polyamide active layer through interfacial polymerization to prepare hydrophilic and high water permeable thin-film nanocomposite (TFN) membranes. [21] The objectives of the present investigation were: 1) to design and synthesize new antibacterial FO membranes using IP method; 2) to characterize as-prepared PA-POV TFN membrane surface properties, and 3) to assess their antibacterial activity against Gram-negative E. coli.…”

Section: Introductionmentioning

confidence: 99%

Novel thin film nanocomposite membranes incorporated with polyoxovanadate nanocluster for high water flux and antibacterial properties

Amini

Shekari

Akbari

et al. 2020

Applied Organom Chemis

Self Cite

View full text Add to dashboard Cite

Using interfacial polymerization (IP) of m‐phenylenediamine aqueous solution containing polyoxovanadate nanoclusters (POV) and trimesoyl chloride (TMC) in organic solution, we fabricated a novel polyamide (PA)‐ polyoxovanadate nanocluster (POV) nanocomposite membranes (PA‐POV TFN). The chemical structures and morphologies of the synthesized membranes were characterized by Fourier transform infrared (FTIR) spectroscopy, atomic force microscope (AFM), scanning electron microscopy (SEM) and water contact angle measurements. Experimental results showed that the performances of PA‐POV TFN membranes are remarkably dependent on POV incorporation in the membranes, which could be controlled by using different amounts of POV particles. Moreover, the PA‐POV TFN membranes illustrated outstanding antibacterial properties against Gram‐negative E. coli. On the other hand, the incorporation of various amounts of POV in the membranes improved the membrane separation performances (water flux and salt rejection) as well as the antibacterial activity in FO process as compared to the original thin‐film composite (TFC) polyamide membrane.

show abstract

“…Inspired by the multi-functional characteristics of biomimic membranes, incorporation of nanomaterials, namely nanocomposite membranes, has been a promising approach to tailor the membrane structure and impart additional unique properties in the past decade [ 1 ]. Up to date, an extensive range of nanomaterials have been incorporated into membranes, such as carbon nanotube (CNT) [ 2 ], graphene oxide (GO) [ 3 ], metal-organic frameworks (MOF) [ 4 ], polyoxometalates (POMs) [ 5 , 6 , 7 ], etc. [ 8 ], to enhance membrane separation efficiency or other properties.…”

Section: Introductionmentioning

confidence: 99%

Property Characterization and Mechanism Analysis of Polyoxometalates-Functionalized PVDF Membranes by Electrochemical Impedance Spectroscopy

et al. 2020

View full text Add to dashboard Cite

Polyoxometalates (POMs) has proved its advantage in constructing high-performance nanocomposite membranes such as catalytic membranes, adsorptive membranes, and forward osmosis membranes. However, it is challenging or tedious to characterize its distribution and effect on the membrane structures due to the equipment resolution limitation, discrete nano-scaled structures of POMs, and limited doping amount compared to the polymeric membrane matrix. In this paper, POMs-functionalized polyvinylidene fluoride (PVDF) membranes were fabricated by phase inversion combined with the sol-gel method, and electrochemical impedance spectroscopy (EIS) was utilized to analyze the nanocomposite membrane intrinsic properties. Through adjusting the additives in the sol-forming process, a set of membranes with varied intrinsic properties were developed accordingly. The wetting degree of the membranes related to the hydrophilic nature of the membrane surfaces had a crucial influence on the impedance measurements at the early stage. Through EIS analysis, it was demonstrated that the amination of the membrane matrix through (3-aminopropyl)trimethoxysilane (APTMS) treatment and the immobilization of POMs through electrostatic attraction would not generate new pore structures into the membrane and only alter the membrane surface roughness and composition. To my knowledge, it is the first time that EIS was utilized to characterize the hydrophilicity of the membranes and pore structures of the POMs-modified membranes. Our findings indicate that EIS can provide valuable information for probing the structures of other nano-materials-incorporated membranes.

show abstract

Polyoxometalate based thin film nanocomposite forward osmosis membrane: Superhydrophilic, anti-fouling, and high water permeable

Cited by 81 publications

References 61 publications

Characterization of seawater reverse osmosis fouled membranes from large scale commercial desalination plant

Characterization of seawater reverse osmosis fouled membranes from large scale commercial desalination plant

Novel thin film nanocomposite membranes incorporated with polyoxovanadate nanocluster for high water flux and antibacterial properties

Property Characterization and Mechanism Analysis of Polyoxometalates-Functionalized PVDF Membranes by Electrochemical Impedance Spectroscopy

Contact Info

Product

Resources

About