Effect of carboxyl and hydroxyl groups on adsorptive polysaccharide fouling: A comparative study based on PVDF and graphene oxide (GO) modified PVDF surfaces

Zhang, Yao-Zhong; Wang, Yifan; Cao, Xin; Xue, Jian; Zhang, Qian; Tian, Jiayu; Li, Xiaoliang; Qiu, Xiaopeng; Pan, Baozhu; Gu, April Z.; Zheng, Xing

doi:10.1016/j.memsci.2019.117514

Cited by 50 publications

(14 citation statements)

References 47 publications

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“…Further, graphene oxide (GO) is a two-dimensional solid material [16][17][18][19], displaying a honeycomb lattice appearance [20,21]. It exhibits biocompatibility with exceptional mechanical and electrical features that recommend it for different usages [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Nanoarchitectonics of Hydroxyapatite/Molybdenum Trioxide/Graphene Oxide Composite for Efficient Antibacterial Activity

El‐Naggar

Ali

Saleh

et al. 2021

J Inorg Organomet Polym

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Nanocomposites based on hydroxyapatite (HAP), including MoO 3 , HAP/MoO 3 , HAP/GO and HAP/MoO 3 /GO have been studied to be suggested for biological usage. The different compositions were investigated using FTIR, XRD, EDS, and XPS analysis. The tight relation between morphological features and composites' chemical ingredients was also studied. According to TEM micrographs, it was mentioned that the disappearance of well-defined grains after the combinations of HAP and MoO 3 , while graphene oxide (GO) caused a reduction in size and maintaining the particles' shape. The combination between HAP/MoO 3 declines the roughness of both HAP and MoO 3 individually, recording 27.5 nm, while HAP/GO and HAP/MoO3/GO exhibit in-between roughness average (Ra) value among its raw constituents with 34.7 and 33.5 nm, respectively. Furthermore, SEM micrographs and roughness results show how to tailing the proper features for the proposed application by changing the type and amount of additives into HAP. Thus, the composite (HAP/MoO 3 /GO) displays the uppermost cell viability compared with the rest compositions with 97.8 ± 3.0%. Additionally, this triple composite hits the peak germicidal behavior with 17.9 ± 1.2 and 16.5 ± 0.9 mm against both E.coli and S.aureus, respectively.

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Section: Introductionmentioning

confidence: 99%

Nanoarchitectonics of Hydroxyapatite/Molybdenum Trioxide/Graphene Oxide Composite for Efficient Antibacterial Activity

El‐Naggar

Ali

Saleh

et al. 2021

J Inorg Organomet Polym

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“…This is due to the presence of GO that masked the amide group and resulted in a coupling peak in TFC/G0.3. When a certain amount of GO was added to the aqueous solution, it will interact with PIP through hydrogen bonds . Due to the applied electric field, GO with PIP attached to the surface will be repelled to the organic side at the interface to react first, covering up part of the water phase and oil phase polymerization, which leads to a decrease in the absorption peak intensity of the amide groups of TFC/G0-DC and TFC/G0.3-DC.…”

Section: Resultsmentioning

confidence: 99%

“…When a certain amount of GO was added to the aqueous solution, it will interact with PIP through hydrogen bonds. 29 Due to the applied electric field, GO with PIP attached to the surface will be repelled to the organic side at the interface to react first, covering up part of the water phase and oil phase polymerization, which leads to a decrease in the absorption peak intensity of the amide groups of TFC/G0-DC and TFC/ G0.3-DC. The characteristic peak of the amide I band at 1660 cm −1 corresponds to the stretching vibration of the CO bond.…”

Section: Methodsmentioning

confidence: 99%

Graphene Oxide/Polyamide-Based Nanofiltration Membranes for Water Purification

Chen

Wang

Zhu

et al. 2020

ACS Appl. Nano Mater.

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A novel electric field-assisted strategy to fabricate graphene oxide (GO)-functionalized nanofiltration (NF) membranes was reported. The resulting polyamide (PA) NF membranes were formed by interfacial polymerization (IP) of trimesoyl chloride (TMC) in an organic phase and piperazine as well as GO with a concentration between 0.1 and 0.5 in the water phase under an electric field using a polysulfone (PSF) ultrafiltration membrane as a substrate. Due to the electric field-induced repulsion in GO during polymerization, the resulting GO/PA nanofiltration membranes showed a Turing-like structure in the composite functional layer as well as higher hydrophilicity. As a result, a substantially improved water flux was observed, and TFC-G0.3-DC even showed a water permeability of 28.5 L•m −2 •h −1 •bar −1 , which is ∼30% higher than that of its analogue TFC-G0.3 without an electric field. Additionally, the TFC-G0.3-DC NF membrane also demonstrated high rejection rates for Na 2 SO 4 (97.6%) and MgSO 4 (97.3%) at 4 bar but relatively low NaCl rejection (25.1%), which suggests that it has the potential to separate divalent and monovalent ions. More importantly, GO-PA composite nanofiltration membranes also exhibited excellent antifouling properties with HA and BSA flux recovery rates reaching more than 95%. The simultaneously enhanced water flux, high divalent/monovalent ion selectivity, and improved antifouling property by the electric field are promising advances that may impact applications of NF membranes in water purification.

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“…For example, alkaline cleaning agents can help in cleaning the polarized gel layer because polysaccharides are rich of -COOH groups. The hydrophilic modification of the membrane surface by doping or grafting functional hydrophilic materials, such as graphene oxide [69], is an alternative for reducing adsorption of polysaccharides.…”

Section: Separation Of Polysaccharidesmentioning

confidence: 99%

Nanofiltration for separation and purification of saccharides from biomass

Tan

Luo

et al. 2021

Front. Chem. Sci. Eng.

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Saccharide production is critical to the development of biotechnology in the field of food and biofuel. The extraction of saccharide from biomass-based hydrolysate mixtures has become a trend due to low cost and abundant biomass reserves. Compared to conventional methods of fractionation and recovery of saccharides, nanofiltration (NF) has received considerable attention in recent decades because of its high selectivity and low energy consumption and environmental impact. In this review the advantages and challenges of NF based technology in the separation of saccharides are critically evaluated. Hybrid membrane processes, i.e., combining NF with ultrafiltration, can complement each other to provide an efficient approach for removal of unwanted solutes to obtain higher purity saccharides. However, use of NF membrane separation technology is limited due to irreversible membrane fouling that results in high capital and operating costs. Future development of NF membrane technology should therefore focus on improving material stability, antifouling ability and saccharide targeting selectivity, as well as on engineering aspects such as process optimisation and membrane module design.

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Effect of carboxyl and hydroxyl groups on adsorptive polysaccharide fouling: A comparative study based on PVDF and graphene oxide (GO) modified PVDF surfaces

Cited by 50 publications

References 47 publications

Nanoarchitectonics of Hydroxyapatite/Molybdenum Trioxide/Graphene Oxide Composite for Efficient Antibacterial Activity

Nanoarchitectonics of Hydroxyapatite/Molybdenum Trioxide/Graphene Oxide Composite for Efficient Antibacterial Activity

Graphene Oxide/Polyamide-Based Nanofiltration Membranes for Water Purification

Nanofiltration for separation and purification of saccharides from biomass

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