A study of different concentrations of bio-silver nanoparticles in polysulfone mixed matrix membranes in water separation performance

Azhar, Faiz Hafeez; Harun, Zawati; Yusof, Khairul Nazri; Alias, Siti Salwa; Hashim, Nurhafizah; Sazali, E.S.

doi:10.1016/j.jwpe.2020.101575

Cited by 16 publications

(3 citation statements)

References 30 publications

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“…Ag can interact with the sulfur and phosphorous groups, most commonly in thiol groups (S-H) in proteins, which contributes to the disruption of the bacterial proteins and hinders both respiration and electron transfer [ 232 ]. Studies have shown that the use of Ag nanoparticles into the membrane matrix significantly enhanced the permeation flux, antimicrobial, and antifouling properties of membranes as a result of increased hydrophilicity [ 172 , 173 , 174 , 175 , 176 ]. However, this is prone to solubility issues in the matrix and is also susceptible to particle aggregation which altogether affects their stability in the matrix.…”

Section: Antifouling Materials For Polymeric Membranesmentioning

confidence: 99%

Recent Advances on the Fabrication of Antifouling Phase-Inversion Membranes by Physical Blending Modification Method

et al. 2023

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Membrane technology is an essential tool for water treatment and biomedical applications. Despite their extensive use in these fields, polymeric-based membranes still face several challenges, including instability, low mechanical strength, and propensity to fouling. The latter point has attracted the attention of numerous teams worldwide developing antifouling materials for membranes and interfaces. A convenient method to prepare antifouling membranes is via physical blending (or simply blending), which is a one-step method that consists of mixing the main matrix polymer and the antifouling material prior to casting and film formation by a phase inversion process. This review focuses on the recent development (past 10 years) of antifouling membranes via this method and uses different phase-inversion processes including liquid-induced phase separation, vapor induced phase separation, and thermally induced phase separation. Antifouling materials used in these recent studies including polymers, metals, ceramics, and carbon-based and porous nanomaterials are also surveyed. Furthermore, the assessment of antifouling properties and performances are extensively summarized. Finally, we conclude this review with a list of technical and scientific challenges that still need to be overcome to improve the functional properties and widen the range of applications of antifouling membranes prepared by blending modification.

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Section: Antifouling Materials For Polymeric Membranesmentioning

confidence: 99%

Recent Advances on the Fabrication of Antifouling Phase-Inversion Membranes by Physical Blending Modification Method

et al. 2023

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“…In recent years, there has been growing interest in incorporating bio material, such as inorganic compounds from biomass [7,8,32,37], extracts [6, 9,12,31] and resins from plant sources [13,14], into hydrophobic polymeric membranes to enhance their antifouling properties. One such natural resin is the Dragon Blood resin (DBR), which has been shown to improve the performance of PES membrane.…”

Section: Introductionmentioning

confidence: 99%

Chemical Stability and Additive Leach Out in Polyethersulfone Membranes Blended with Dragon Blood Resin: An Investigative Study

Mulyati

Ambarita

Arahman

et al. 2023

Preprint

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Dragon blood resin (DBR) is an effective bio-based additive for polymeric membrane fabrication. Despite the improved permeability and antifouling properties of the resulting membrane provided by DBR, its weak chemical bond makes it susceptibleto leaching during both fabrication and operation rendering the membrane properties and performances. This study investigates the chemical stability and leaching behavior of polyethersulfone (PES) membranes modified with DBR in an alkaline solution. The study involves immersing two types of PES based membranes, one loaded with 3% DBR (M-3) during the fabrication and one without (M-0), in a 0.01 N NaOH solution for five days. The results show that M-0 had good resistance to high alkaline solution, while M-3 was less stable. The pure water permeability of M-3 increased significantly with immersion time, as well as its surface hydrophilicity. The leaching of DBR from PES membrane matric can be ascribed by its alkali lysis polarity and the breaking of the DBR bonds from reaction of hydroxide ions with the ester bonds and glycosidic linkages in the flavonoids and anthocyanins, causing them to break apart into smaller molecules. The leaching of DBR also left pores that enhanced the membrane pore size. Overall, these findings provide useful information for the optimal design of a bio-based PES membrane.

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“…Much research related to the addition of nanoparticles such as Al 2 O 3 , TiO 2 , SiO 2 , and Ag into polymer membranes has indicated that the skin layer and support morphology could be affected by nanoparticles [ 20 , 21 , 22 , 23 ]. Silver nanoparticles had received the most consideration of these nanoparticles due to their promising features (hypoallergenic, antibacterial, and nontoxic) in manufacturing mixed matrix membranes [ 24 , 25 , 26 ]. Different methods have been used in fabricating membranes loaded with silver nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Study Effect of nAg Particle Size on the Properties and Antibacterial Characteristics of Polysulfone Membranes

Prihandana

Sriani²,

Muthi’ah

et al. 2022

Nanomaterials

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Polysulfone ultrafiltration membranes were fabricated using various sizes (20, 40, and 90–210 nm) of silver nanoparticles (nAg) blended in a dope solution. To characterize the performance and properties of the prepared membranes, scanning electron microscopy (SEM), water contact angle, protein separation, water flux, and antibacterial tests were conducted. The characterization results revealed that when nAg particles (20 nm) were blended into the base polymer PSF, the PSF/nAg blended membrane had the lowest contact angle (58.5°) and surface energy (110.7 mN/m). When experimenting with ultrafiltration using protein solutions, bare PSF and PSF/nAg-20 blended membranes gave similar values of protein rejection: 93% of bovine serum albumin (BSA) and 70% of lysozyme rejection. Furthermore, SEM studies showed that the surface pore size was reduced by adding 20 nm nAg particles in the casting solution. Most importantly, the introduction of 40 nm nAg particles reduced the growth of bacterial colonies on the membrane surface by up to 72%. These findings revealed that nAg particles are expected to be a potential modifier for the fabrication of an ultrafiltration membrane.

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A study of different concentrations of bio-silver nanoparticles in polysulfone mixed matrix membranes in water separation performance

Cited by 16 publications

References 30 publications

Recent Advances on the Fabrication of Antifouling Phase-Inversion Membranes by Physical Blending Modification Method

Recent Advances on the Fabrication of Antifouling Phase-Inversion Membranes by Physical Blending Modification Method

Chemical Stability and Additive Leach Out in Polyethersulfone Membranes Blended with Dragon Blood Resin: An Investigative Study

Study Effect of nAg Particle Size on the Properties and Antibacterial Characteristics of Polysulfone Membranes

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