Preparation and pervaporation performance of PVA membrane with biomimetic modified silica nanoparticles as coating

Wang, Mingqian; Cheng, Xue; Jiang, Guanjin; Xie, Jiangyu; Cai, Weibin; Li, Jiding; Wang, Yujun

doi:10.1016/j.memsci.2022.120535

Cited by 40 publications

(11 citation statements)

References 49 publications

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“…3e). 38 From the above C 1s, N 1s, and O 1s analyses, it could be conrmed that SiO 2 and dopamine had a new chemical bonding interaction in the WM-SiO 2 /DA membranes. The Si 2p peak of the WM-SiO 2 /OTS membranes could be divided into two peaks at 102.1 and 102.8 eV, corresponding to the Si-C and Si-O bonds, respectively (Fig.…”

Section: Surface Characterizationmentioning

confidence: 91%

Preparation of two kinds of membranes with reverse wettability from waste masks for continuous oil/water separation

Ning

Liu

Luo

et al. 2023

Environ. Sci.: Adv.

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Section: Surface Characterizationmentioning

confidence: 91%

Preparation of two kinds of membranes with reverse wettability from waste masks for continuous oil/water separation

Ning

Liu

Luo

et al. 2023

Environ. Sci.: Adv.

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“…The reported preparation methods are relatively complicated, and the interaction between the fabricated layer and the substrate interface is weak. The optimization of the barrier layer structure and the enhancement of the interaction between the barrier layer and the substrate are the keys to the development of high-performance pervaporation membranes. , …”

Section: Applications Of Enc Membranesmentioning

confidence: 99%

“…The optimization of the barrier layer structure and the enhancement of the interaction between the barrier layer and the substrate are the keys to the development of high-performance pervaporation membranes. 54,55 In recent years, the introduction of a hydrophilic interlayer on the surface of the substrate has been an effective method to tailor interfacial polymerization. 52 Unfortunately, the interface interaction between the introduction layer and the polymerized PA layer was often neglected, and the weak interaction would easily result in the collapse of the membrane integrity.…”

Section: Pervaporationmentioning

confidence: 99%

Electrospun Nanofibrous Composite Membranes for Separations

et al. 2023

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Conspectus Electrospinning is regarded as an efficient method for directly and continuously fabricating nanofibers. The electrospinning process is relatively simple and convenient to operate and can be used to prepare polymer nanofibers for almost all polymer solutions, melts, emulsions, and suspensions with sufficient viscosity. In addition, inorganic nanofibers can also be prepared via electrospinning by adding small amounts of polymers into the inorganic precursors, which are generally regarded as nonspinnable. The diameter of the electrospun nanofibers can be tuned from tens of nanometers to submicrons by changing the spinning parameters. The nonwoven fabric stacked with electrospun fibers is a porous material with interconnected submicron pores, providing a porosity above 80%. However, limited by the unstable rheological properties of the electrospinning fluid, it is difficult to obtain nanofibers stably and continuously with an average diameter of <100 nm, which narrows the separation applications of the electrospun nanofibrous membranes to only microfiltration, air filtration, or use as membrane substrates. Therefore, to fully take advantage of electrospun nanofibrous membranes in other separation applications, electrospun nanofibrous composite (ENC) membranes were developed to improve and optimize their selectivity, permeability, and other separation performances. The composite membranes not only have all the advantages of single-layered or single-component membranes, but also have more flexibility in the choice of functional components. In this account, we summarize the two combination strategies to design and fabricate ENC membranes. One is based on the component combination, in which functional components are homogeneously or heterogeneously mixed in the fiber matrix or modified on the nanofiber surface. The other one is termed as the interfacial combination, in which functional skin layers are fabricated on the top of the electrospun membranes via interfacial deposition or interfacial polymerization, to construct selective barriers. The specific preparation approaches in the two combination strategies are discussed systematically. Additionally, the structural characteristics and separation performances of ENC membranes fabricated via these approaches are also compared and analyzed to clarify their advantages and range of utilization. Subsequently, the six applications of ENC membranes we focus on are demonstrated, including adsorption, membrane distillation, oil/water emulsion separation, nanofiltration, hemodialysis, and pervaporation. To meet their different requirements for separations, our consideration about the choice of combination strategies, related preparation methods, and functional components are discussed based on typical research cases. In the end, we conclude this account with an overview of the challenges in industrial manufacturing, mechanical strength, and interfacial attachment of ENC membranes and prospect their future developments.

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“…It can also be used as a linker to fix the GO layers and stabilize the structure of GOMs. Polyvinyl alcohol (PVA) is rich in hydroxyl groups, is easily cross-linked into a mesh structure, has favorable biocompatibility, and exhibits stable physicochemical properties [ 82 , 83 ]. Sun et al intercalated PVA in GO through the cross-linker GA ( Figure 8 a) to illustrate the effect of PVA intercalation on the structure of the GO layer in a brick–mortar model, where GO was the brick, PVA was the mortar, and GA was the binder [ 84 ].…”

Section: Regulation Of Gom Mass Transfer Pathwaysmentioning

confidence: 99%

GO-Based Membranes for Desalination

Huo

Gao

et al. 2023

Membranes

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Graphene oxide (GO), owing to its atomic thickness and tunable physicochemical properties, exhibits fascinating properties in membrane separation fields, especially in water treatment applications (due to unimpeded permeation of water through graphene-based membranes). Particularly, GO-based membranes used for desalination via pervaporation or nanofiltration have been widely investigated with respect to membrane design and preparation. However, the precise construction of transport pathways, facile fabrication of large-area GO-based membranes (GOMs), and robust stability in desalination applications are the main challenges restricting the industrial application of GOMs. This review summarizes the challenges and recent research and development of GOMs with respect to preparation methods, the regulation of GOM mass transfer pathways, desalination performance, and mass transport mechanisms. The review aims to provide an overview of the precise regulation methods of the horizontal and longitudinal mass transfer channels of GOMs, including GO reduction, interlayer cross-linking, intercalation with cations, polymers, or inorganic particles, etc., to clarify the relationship between the microstructure and desalination performance, which may provide some new insight regarding the structural design of high-performance GOMs. Based on the above analysis, the future and development of GOMs are proposed.

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Preparation and pervaporation performance of PVA membrane with biomimetic modified silica nanoparticles as coating

Cited by 40 publications

References 49 publications

Preparation of two kinds of membranes with reverse wettability from waste masks for continuous oil/water separation

Preparation of two kinds of membranes with reverse wettability from waste masks for continuous oil/water separation

Electrospun Nanofibrous Composite Membranes for Separations

GO-Based Membranes for Desalination

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