Large-pore-size membranes tuned by chemically vapor deposited nanocoatings for rapid and controlled desalination

Zhu, Mengfan; Mao, Yu

doi:10.1039/d0ra07629e

Cited by 16 publications

(9 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The influence of CVD deposition time on three key characteristics of the coating: (a) coating thickness, (b) pore size, and (c) surface contact angle. 84,171,187,192,200,201,255 [Color figure can be viewed at wileyonlinelibrary.com] dichalcogenides (TMDs) which are a class of materials with growing interests due to their unusual electrical, optical, and mechanical properties. The three-atom thick unit cell of TMDs is created by a layer of transition metal atoms sandwiched between two layers of chalcogen atoms.…”

Section: Deposition Temperaturementioning

confidence: 99%

“…The influence of CVD deposition time on three key characteristics of the coating: (a) coating thickness, (b) pore size, and (c) surface contact angle 84,171,187,192,200,201,255 . [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Cvd Process Parameters Selection and Controlmentioning

confidence: 99%

“…The state of decline in water flux during the operation as an indication of stability of deposition for a few CVD‐modified MD membranes 171–173,175,180 . [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Progress In Applications Of Cvd‐based Thin Films and Membranesmentioning

confidence: 99%

“…The state of decline in water flux during the operation as an indication of stability of deposition for a few CVDmodified MD membranes. [171][172][173]175,180 [Color figure can be viewed at wileyonlinelibrary.com] the specifications and characteristics of CVD-modified NF membranes studied in recent years. Considering the other emerging areas of applications of NF membranes including separation of organic solvents, treatment of bio and pharmaceutical streams, and food and beverage industrial process, CVD processes may gain further attention for boosting the properties of the existing NF membranes.…”

Section: Nanofiltrationmentioning

confidence: 99%

See 3 more Smart Citations

Advances in surface modification and functionalization for tailoring the characteristics of thin films and membranes via chemical vapor deposition techniques

Mostafavi

Mishra

Gallucci

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

Advanced materials are among the prime drivers for technological revolutions and transformation in quality of lives. Over time, several modification techniques have emerged enabling development of novel materials with extraordinary features. The present review aims to introduce various promising chemical and physical surface modification techniques instrumental for tailoring the characteristics of thin films and membranes. Meticulous discussions are provided over chemical vapor deposition (CVD) techniques evolved for addressing the demands for materials with desired functionalities. Also, essential criteria for the selection of substrates, modifying and precursor materials for an effective CVD modification are elaborated. Investigations are extended to unraveling the role of various process parameters on the quality and properties of deposition. Special attention is paid to the significance and performance of CVD‐based membranes and thin films for industrial applications ranging from desalination and water treatment to energy and environment, biomedical and life science as well as packaging. The goal has been to establish a scientific platform for a timely tracking of the prevailing trends in exploitation of CVD techniques and highlighting the unexplored opportunities. This also helps in identification of the scientific and technical gaps and setting directions for further progress in the fields of thin films and membranes.

show abstract

Section: Deposition Temperaturementioning

confidence: 99%

Section: Cvd Process Parameters Selection and Controlmentioning

confidence: 99%

Section: Progress In Applications Of Cvd‐based Thin Films and Membranesmentioning

confidence: 99%

Section: Nanofiltrationmentioning

confidence: 99%

See 2 more Smart Citations

Advances in surface modification and functionalization for tailoring the characteristics of thin films and membranes via chemical vapor deposition techniques

Mostafavi

Mishra

Gallucci

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Various biocompatible materials, such as silicon dioxide (SiO 2 ) or titanium dioxide (TiO 2 ), can be easily deposited by this technique to a thickness of a few nanometers [ 12 ]. These functional coatings allow for the modification of the pore size and geometry (cone-shaped pores) and also improve the biocompatibility and pre-selection of diffusive transport properties [ 13 ]. Finally, it is desirable to cover the surface with specific materials to reduce the biofouling effect of nanoporous membranes, with various techniques such as plasma jet, laser topological covering with hydrophilic/charged/polyethylene glycol networks, and the hydrophobic carbon coating currently available [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Nanoporous Membranes for the Filtration of Proteins from Biological Fluids: Biocompatibility Tests on Cell Cultures and Suggested Applications for the Treatment of Alzheimer’s Disease

Schreiner

Tamba

Mihai

et al. 2022

JCM

View full text Add to dashboard Cite

Background: Alzheimer’s disease has a significant epidemiological and socioeconomic impact, and, unfortunately, the extensive research focused on potential curative therapies has not yet proven to be successful. However, in recent years, important steps have been made in the development and functionalization of nanoporous alumina membranes, which might be of great interest for medical use, including the treatment of neurodegenerative diseases. In this context, the aim of this article is to present the synthesis and biocompatibility testing of a special filtrating nano-membrane, which is planned to be used in an experimental device for Alzheimer’s disease treatment. Methods: Firstly, the alumina nanoporous membrane was synthesized via the two-step anodizing process in oxalic acid-based electrolytes and functionalized via the atomic layer deposition technique. Subsequently, quality control tests (spectrophotometry and potential measurements), toxicity, and biocompatibility tests (cell viability assays) were conducted. Results: The proposed alumina nanoporous membrane proved to be efficient for amyloid-beta filtration according to the permeability studies conducted for 72 h. The proposed membrane has proven to be fully compatible with the tested cell cultures. Conclusions: The proposed alumina nanoporous membrane model is safe and could be incorporated into implantable devices for further in vivo experiments and might be an efficient therapeutic approach for Alzheimer’s disease.

show abstract

Vapor‐Deposited Janus Membranes with Fouling Resistance for Desalination of Oil‐Contaminated Wastewater

Zhu

Mao

2021

Adv Materials Inter

Self Cite

View full text Add to dashboard Cite

However, the hydrophobicity of conventional MD membranes makes them vulnerable to fouling when treating saline water containing organic compounds. [5] Taking the produced water as an example, total dissolved organic carbon up to 5 g L −1 has been reported. [6] The organic contaminants not only block membrane pores, but also lead to membrane wetting by the low-surface-tension compounds, resulting in the reduction of both permeate flux and desalination efficiency during MD operations. [5b] To alleviate the fouling problem, surfaces with ultralow surface energy were constructed to repel both water and lowsurface-tension compounds. [2b,7] The omniphobicity prevented membrane from oil fouling when treating feed solution with 10 mg L −1 oil. [8] However, the permeate flux of the omniphobic membranes declined as oil concentration increased to 80 mg L −1 , [9] indicating the limitation in improving MD fouling resistance by merely reducing membrane surface energy.Membranes with the combination of hydrophilic surface and hydrophobic structure present the advantage of repelling oil foulants while maintaining the wetting resistance. [10] Such Janus membranes have been directly fabricated by forming layers with opposite wettability via sequential electrospinning [11] or postcasting phase separation, [12] but materials available for direct asymmetric fabrication were quite limited. Asymmetric modification of the hydrophobic MD membranes has been studied as an alternative for the preparation of Janus membranes. A variety of hydrophilic polymers, including chitosan, [13] polydopamine, [14] polyvinyl alcohol, [15] and zwitterionic polymers, [16] were selectively processed onto MD membranes using solvent-based methods such as spray-and dip-coating. Chemical reaction in alkaline solution has also been reported to introduce hydrophilicity to the MD membrane surface. [17] Despite these advances, several challenges remained in the asymmetric modification of MD membranes. The hydrophilic modification usually required polymer preparation and/or processing in various solvents for long periods of time, [14,16] and post-treatments were often needed to remove the solvent residue and cure the coatings. [11][12][13][14] In addition, the conflicting wettability of hydrophilic and hydrophobic components made the solvent-based methods less effective and resulted in poor interfacial compatibility. [18] To facilitate the attaching of hydrophilic coatings onto the liquid-repelling hydrophobic structure, protocols such as plasma activation, [16] chemical modification, [19] Janus membranes with excellent fouling resistance and mass transport properties are highly desired to improve the performance and efficiency in the treatment of oil-contaminated wastewater. The fabrication of Janus membranes requires control of both the membrane microstructure and the interfacial compatibility between distinct components. This work presents a vapor-based strategy to incorporate Janus property into porous substrates without the wetting incompatibility in solut...

show abstract

Large-pore-size membranes tuned by chemically vapor deposited nanocoatings for rapid and controlled desalination

Abstract: Chemical vapor modification simultaneously improved the membrane wetting resistance and permeate flux for membrane distillation. The modification enabled desalination using membranes with pore size > 1 μm and demonstrated significant flux enhancement.

Cited by 16 publications

References 54 publications

Advances in surface modification and functionalization for tailoring the characteristics of thin films and membranes via chemical vapor deposition techniques

Advances in surface modification and functionalization for tailoring the characteristics of thin films and membranes via chemical vapor deposition techniques

Nanoporous Membranes for the Filtration of Proteins from Biological Fluids: Biocompatibility Tests on Cell Cultures and Suggested Applications for the Treatment of Alzheimer’s Disease

Vapor‐Deposited Janus Membranes with Fouling Resistance for Desalination of Oil‐Contaminated Wastewater

Contact Info

Product

Resources

About