A conductive PVDF-Ni membrane with superior rejection, permeance and antifouling ability via electric assisted in-situ aeration for dye separation

Yu, Weiming; Liu, Ying; Xu, Yanchao; Li, Renjie; Chen, Jianrong; Liao, Baoqiang; Shen, Liguo; Lin, Hongjun

doi:10.1016/j.memsci.2019.03.083

Cited by 110 publications

(40 citation statements)

References 69 publications

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“…2(b), the O 1s spectrum was tted, consisting mainly of two components, one is 529.7 eV (Mn-O-Mn) and the other is 531.6 eV (Mn-OH), which is in good agreement with the ref. [38][39][40]. Hence, aer comprehensive analysis, we could conclude that the deposited lm is MnO 2 $nH 2 O.…”

Section: Tem and Xps Analysismentioning

confidence: 82%

Effects of electrodeposition time on a manganese dioxide supercapacitor

Dai

Zhang

et al. 2020

RSC Adv.

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As is well known that the specific capacitance of supercapacitors cannot be improved by increasing the mass of the deposited MnO 2 films, which means an appropriate deposition duration is important. In this study, nanobelt-structured MnO 2 films were prepared by the electrochemical deposition method under different deposition time to explore the effects of electrodeposition time change on the microstructure and electrochemical properties of this material. Benefiting from the microstructure of the MnO 2 films, the transfer properties of the charged electrons and ions were promoted. Meanwhile, a 3D porous nickel foam was chosen as the deposition substrate, which rendered an enhancement of the MnO 2 conductivity and the mass of the active material. The enhanced specific capacitance and specific surface area attributed to synergistic reactions. Subsequently, the electrochemical performances of the asprepared materials were analyzed via cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) tests. Results show that the optimum sample deposited for 50 s has a specific capacitance of 291.9 F g À1 at the current density of 1 A g À1 and lowest R ct . However, its electrochemical stability cannot come up to the level of the 300 s sample due to the microstructure change.

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Section: Tem and Xps Analysismentioning

confidence: 82%

Effects of electrodeposition time on a manganese dioxide supercapacitor

Dai

Zhang

et al. 2020

RSC Adv.

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“…To obtain a hydrodynamic understanding of the membrane fouling, an interpretation of the membrane fouling mechanism can be now developed from the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory (Lee et al, 2007;Hong et al, 2013;Lin T. et al, 2014). Based on the XDLVO theory, the fouling process can be quantitatively evaluated via the interface thermodynamic reactions (Shen et al, 2015(Shen et al, , 2017bYu et al, 2019). Theoretically, a membrane that presents lower roughness, an enhanced negative charge, and a hydrophilic surface will show less adhesion force toward NOM present in wastewater (Zhang et al, 2015).…”

Section: Membrane Foulingmentioning

confidence: 99%

“…The external modification refers to physically or chemically coating hydrophilic components onto the membrane surface (Yu et al, 2019;Zhao et al, 2019). During the membrane fouling process, pollutants firstly get closer to the membrane surface, then interact with the membrane surface, and eventually adhere to the membrane surface.…”

Section: Modification Technologymentioning

confidence: 99%

Polymeric Membranes Incorporated With ZnO Nanoparticles for Membrane Fouling Mitigation: A Brief Review

et al. 2020

Self Cite

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Due to the flexibility of operation, high removal ability, and economic cost, separation membranes have proved to be one of the most significant technologies in various aspects including water treatment. However, membrane fouling is a predominant barrier which is severely limiting the whole membrane industry. To mitigate membrane fouling, researchers have carried out several modification strategies including the incorporation of hydrophilic inorganic components. Zinc oxide (ZnO) nanoparticles, known as a low-cost, environment-friendly, and hydrophilic inorganic material, have been used by worldwide researchers. As claimed by the scientific literatures, ZnO nanoparticles can not only endow the polymeric membranes with antifouling performance but also supply a photocatalytic self-cleaning ability. Therefore, polymer-ZnO composite membranes were considered to be an attractive hot topic in membrane technology. In the last decades, it has been significantly matured by a large mass of literature reports. The current review highlights the latest findings in polymeric membranes incorporated with ZnO nanoparticles for membrane fouling mitigation. The membrane fouling, ZnO nanoparticles, and modification technology were introduced in the first three sections. Particularly, the review makes a summary of the reports of polyvinylidene fluoride (PVDF)-ZnO composite membranes, polyethersulfone (PES)-ZnO composite membranes, and other composite membranes incorporated with ZnO nanoparticles. This review further points out several crucial topics for the future development of polymer-ZnO composite membranes.

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“…The whole composite was exposed in the air for 10.0 s followed by immersing into a DI water bath to initiate phase inversion process. Once the substrate was peeled off from the glass plate, it was removed from the water bath, thoroughly rinsed with DI water for three times and then transferred to a 4 • C DI water bath for storage till later use (Qin et al, 2013;Shen et al, 2015;Yu et al, 2019).…”

Section: The Preparation Of Polysufone (Psf) Substratementioning

confidence: 99%

Graphene Oxide Incorporated Forward Osmosis Membranes With Enhanced Desalination Performance and Chlorine Resistance

Li¹,

Wang²,

Han³

et al. 2020

Front. Chem.

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In this work, grapheme oxide (GO) nano-sheets were synthesized and dispersed in the aqueous phase for the interfacial polymerization (IP) process to develop a new type of thin-film composite (TFC) membranes for forward osmosis (FO) applications. The effects of the GO concentrations on the membrane surfaces and cross-sectional morphologies and FO desalination performances of the as-prepared TFC membranes were investigated systematically. Compared with the control membrane, the optimal GO-incorporated TFC membrane displayed higher water flux, less specific reverse solute flux (SRSF) and lower structure parameter. Moreover, the optimized membrane showed 75.0 times higher chlorine resistance than the control membrane. In general, these new type of membranes could be an effective strategy to fabricate high-performance FO membranes with good desalination performance and chlorine resistance.

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A conductive PVDF-Ni membrane with superior rejection, permeance and antifouling ability via electric assisted in-situ aeration for dye separation

Cited by 110 publications

References 69 publications

Effects of electrodeposition time on a manganese dioxide supercapacitor

Effects of electrodeposition time on a manganese dioxide supercapacitor

Polymeric Membranes Incorporated With ZnO Nanoparticles for Membrane Fouling Mitigation: A Brief Review

Graphene Oxide Incorporated Forward Osmosis Membranes With Enhanced Desalination Performance and Chlorine Resistance

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