Progress reports of mineralized membranes: Engineering strategies and multifunctional applications

Li, Yangxue; Yang, Xiaobin; Wen, Yajie; Zhao, Yuanyuan; Yan, Linlin; Han, Gang; Shao, Lu

doi:10.1016/j.seppur.2022.122379

Cited by 48 publications

(25 citation statements)

References 134 publications

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“…79,80 In this work, using the PFSS creatively addressed this issue, and the as-prepared mineralized materials demonstrated guaranteed stability for advanced applications. In accordance with the previous studies about the mineralized polymeric membrane, 81,82 the PTFE@PFSS@TiO 2 membrane showed a gratifying oil/water separation performance due to the endowed excellent and stable hydrophilic property resulting from the amorphous TiO 2 (Figures S20 and S21). The pristine oil/water emulsion displayed color of milky white, and numerous oil droplets were observed under an optical microscope (Figure S21a);the size of these droplets ranged from 0.1−2 μm (Figure S21b).…”

Section: Pfss-assisted Surface Mineralization Of Polymersupporting

confidence: 90%

Robust and Scalable In Vitro Surface Mineralization of Inert Polymers with a Rationally Designed Molecular Bridge

Zhang

Wang

Xue

et al. 2023

ACS Appl. Mater. Interfaces

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The artificial integration of inorganic materials onto polymers to create the analogues of natural biocomposites is an attractive field in materials science. However, due to significant diversity in the interfacial properties of two kinds of materials, advanced synthesis methods are quite complicated and the resultant materials are always vulnerable to external environments, which limits their application scenarios and makes them unsuitable for scalable production. Herein, we report a simple and universal approach to achieve robust and scalable surface mineralization of polymers using a rationally designed triple functional molecular bridge of fluorosilane, 3-[(perfluorohexyl sulfonyl) amino] propyltriethoxy silane (PFSS). In a twostep solution deposition, the fluoroalkyl and siloxane of the PFSS take charge of its adhesion and immobilization onto polymers by hydrophobic interaction and wrapping-like chemical cross-linking, and then the assembly and growth of inorganic nanoclusters for integration are achieved by strong chemical coordination of PFSS sulfonamide. The versatile mineralization of inorganic oxides (e.g., TiO 2 , SiO 2 , and Fe 2 O 3 ) onto chemically inert polymer surfaces was realized very well. The resultant mineralized materials exhibit robust and multiple functionalities for hostile applications, such as hydrophilic membranes for removing oils in strong acidic and alkaline wastewaters, fabrics with advanced anti-bacteria for healthy wearing, and plates with strong mechanical performance for better use. Experimental results and theoretical calculations confirmed the homogenous distribution of the PFSS onto polymers via cross-linking for robust coordination with inorganic oxides. These results demonstrate a skillful enlightenment in the design of high-performance mineralized polymer materials used as membranes, fabrics, and medical devices.

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Section: Pfss-assisted Surface Mineralization Of Polymersupporting

confidence: 90%

Robust and Scalable In Vitro Surface Mineralization of Inert Polymers with a Rationally Designed Molecular Bridge

Zhang

Wang

Xue

et al. 2023

ACS Appl. Mater. Interfaces

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“…Oil/water separation has become a serious challenge on the global scale because of the frequent oil spillages into the ocean and endless release of oily wastewaters from industrial and domestic sources. − Membrane technology representing a simple, energy-saving, and environmentally friendly method can efficiently separate both immiscible and emulsified oils from water; therefore, it has attracted considerable attention from researchers in recent years. In particular, membranes with unique wettability properties (either superhydrophilic or superhydrophobic ones − ) demonstrate high affinity for water or oil, which enables the effective separation of oil/water mixtures.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Under-Liquid Dual Superlyophobic Surface for On-Demand Oil/Water Separation

Wang

Guan

Jiang³

et al. 2023

Langmuir

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Porous membranes with under-liquid dual superlyophobic properties, which are difficult to achieve because of a thermodynamic contradiction, have attracted considerable interest in the field of switchable oil/water separation. Herein, a bioinspired mesh membrane with alternating hydrophilic and hydrophobic chemical patterns on its surface that endows it with superamphiphilic and under-liquid dual superlyophobic properties is fabricated by a simple liquidus modification process. The as-prepared membrane possesses a combination of under-oil superhydrophobic and under-water superoleophobic characteristics in the absence of external stimuli. Moreover, it can effectively perform the on-demand separation of various oil/water systems, including immiscible oil/water mixtures and oil/water emulsions owing to its under-liquid dual superlyophobic properties.

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“…To capture oil from oil–water mixtures, various superhydrophobic–superoleophilic (SHSO) surfaces have been designed such as sponges, , papers, aerogels, , meshes, and mineralized membranes . Recently, stainless steel (SS) mesh-based membranes with SHSO wettability have gained remarkable attention because of their high permeability, low-pressure drop, and high mechanical stability. − However, there are several limitations to the industrial applications of SHSO membranes.…”

Section: Introductionmentioning

confidence: 99%

Selective and Continuous Oil Removal from Oil–Water Mixtures Using a Superhydrophobic and Superoleophilic Stainless Steel Mesh Tube

et al. 2023

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The development of continuous oil−water separation processes has applications in the treatment of industrial oily wastewater and effective management of oil spills. In this research, the performance of a superhydrophobic−superoleophilic (SHSO) membrane in oil−water separation is investigated through dynamic tests. We investigate the effects of the total flow rate and oil concentration on the separation efficiency using an as-fabricated SHSO mesh tube. To construct the SHSO membrane, a tubular stainless steel mesh is dip-coated into a solution, containing a long-chain alkyl silane (Dynasylan F8261) and functionalized silica nanoparticles (AEROSIL R812). The as-prepared SHSO mesh tube illustrates a water contact angle of 164°and an oil contact angle of zero for hexane. A maximum oil separation efficiency (SE) of 97% is obtained when the inlet oil−water mixture has the lowest flow rate (5 mL/min) with an oil concentration of 10 vol %, while the minimum oil SE (86%) is achieved for the scenario with the highest total flow rate (e.g., 15 mL/min) and the highest oil concentration (e.g., 50 vol %). The water SE of about 100% in the tests indicates that the water separation is not affected by the total flow rate and oil concentration, due to the superhydrophobic state of the fabricated mesh. The clear color of water and oil output streams also reveals the high SE of both phases in dynamic tests. The outlet oil flux increases from 314 to 790 (L/m 2 •h) by increasing the oil permeate flow rate from 0.5 to 7.5 (mL/min). The linear behavior of the cumulative amounts of collected oil and water with time demonstrates the high separation performance of a single SHSO mesh, implying no pore blocking during dynamic tests. The significant oil SE (97%) of the fabricated SHSO membrane with robust chemical stability shows its promising potential for industrial-scale oil−water separation applications.

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Progress reports of mineralized membranes: Engineering strategies and multifunctional applications

Cited by 48 publications

References 134 publications

Robust and Scalable In Vitro Surface Mineralization of Inert Polymers with a Rationally Designed Molecular Bridge

Robust and Scalable In Vitro Surface Mineralization of Inert Polymers with a Rationally Designed Molecular Bridge

Bioinspired Under-Liquid Dual Superlyophobic Surface for On-Demand Oil/Water Separation

Selective and Continuous Oil Removal from Oil–Water Mixtures Using a Superhydrophobic and Superoleophilic Stainless Steel Mesh Tube

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