All cellulose electrospun water purification membranes nanotextured using cellulose nanocrystals

Goetz, Lee A.; Naseri, Narges; Nair, Santhosh S.; Karim, Zoheb; Mathew, Aji P.

doi:10.1007/s10570-018-1751-1

Cited by 83 publications

(50 citation statements)

References 31 publications

(33 reference statements)

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“…Additionally, the clean water permeability of the used silica nanofibrous membranes is 26.8 × 10 4 L m −2 h −1 bar −1 , which is 100 times higher than commercially available microfiltration membranes and in line with other state‐of‐the‐art investigated nanofibrous membranes, and thus enables very fast, gravity‐driven separation . This results in a pressure drop below 0.1 bar for cross‐flow filtration and below 0.3 bar for dead‐end filtration .…”

Section: Resultsmentioning

confidence: 58%

Silica Nanofibrous Membranes for the Separation of Heterogeneous Azeotropes

Loccufier

Geltmeyer

Daelemans

et al. 2018

Adv Funct Materials

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Nanofibrous materials produced through electrospinning are characterized by a high porosity, large specific surface area, and high pore interconnectivity and, therefore, show potential for, e.g., separation and filtration. The development of more inert nanofibers with higher thermal and chemical resistance extends the application field to high-end purification. Silica nanofibrous membranes produced by direct electrospinning of a sol-gel solution without a sacrificing carrier, starting from tetraethoxysilane, meet these challenging requirements. After electrospinning the membrane is highly hydrophobic. Storage under dry conditions preserves this property. Oppositely, a superhydrophilic membrane is obtained by storage under high humidity (month scale). This switch is caused by the reaction of ethoxy groups, present due to incomplete hydrolysis of the precursor, with moisture in the air, resulting in an increased amount of silanol groups. This transition can be accelerated to hour scale by applying a heat treatment, with the additional increase in cross-linking density for temperatures above 400 °C, enabling applications that make use of hydrophobic and hydrophilic membranes by tuning the functionalization. It is showcased that upon designing the water repellent or absorbing nature of the silica material, fast gravity-driven membrane separation of heterogeneous azeotropes can be achieved.

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Section: Resultsmentioning

confidence: 58%

Silica Nanofibrous Membranes for the Separation of Heterogeneous Azeotropes

Loccufier

Geltmeyer

Daelemans

et al. 2018

Adv Funct Materials

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“…To solve this problem, membrane surface was modified using biocidal agents . Current researches are focused on the surface membrane modification with different types of polymeric nanofibers, photocatalysts, and biodegradable substances …”

Section: Nanofiber For Air Water and Blood Purificationmentioning

confidence: 99%

“…[302] Current researches are focused on the surface membrane modification with different types of polymeric nanofibers, photocatalysts, and biodegradable substances. [310][311][312] Nanofiber membranes are very effective in removing viruses, [313] antibiotics, metal nanoparticles, [314][315][316] soluble organic compounds, bacteria, and microorganisms from water. [317,318] Functional compounds such as poly(quaternary ammonium) can be used to target pathogenic microorganisms [317] such as nanobiocides that can be entrapped in the nanofibers.…”

Section: Nanofiber For Water Purificationmentioning

confidence: 99%

Nanofibers for Biomedical and Healthcare Applications

Rasouli

Barhoum

Bechelany

et al. 2018

Macromolecular Bioscience

214

112

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Unique features of nanofibers provide enormous potential in the field of biomedical and healthcare applications. Many studies have proven the extreme potential of nanofibers in front of current challenges in the medical and healthcare field. This review highlights the nanofiber technologies, unique properties, fabrication techniques (i.e., physical, chemical, and biological methods), and emerging applications in biomedical and healthcare fields. It summarizes the recent researches on nanofibers for drug delivery systems and controlled drug release, tissue‐engineered scaffolds, dressings for wound healing, biosensors, biomedical devices, medical implants, skin care, as well as air, water, and blood purification systems. Attention is given to different types of fibers (e.g., mesoporous, hollow, core‐shell nanofibers) fabricated from various materials and their potential biomedical applications.

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“…PVDF with tri-ethylamine basic dopant has also been shown to have interesting properties once equated to pure PVDF ENMs [119]. CA nanofibers textured with cellulose nanocrystals (CNCs) have also demonstrated 99% adsorption capacity of organic dyes [120].…”

Section: Multicomponent Electrospun Polymer Nanofiber Membranesmentioning

confidence: 99%

Electrospun polymeric nanofibrous membranes for water treatment

Snowdon¹,

Liang²

2018

Preprint

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A necessity for water filtration technology, due to global pollution and population growth, has led to an increase in attention to advanced nanomaterials that can aid in the purification of air and water. This size-dependent filtration is possible via nanofibrous membranes as they contain high porosity and this pore size is tunable through the fabrication process. Because of this tunability in the nanofibril membrane composition and structure, they possess promising straining abilities, such as high permeability and selectivity, as well as low fouling. There are a variety of polymer blends or organic/inorganic nanofillers that can be used depending on filtration needs. The production of nanofibers consists of various avenues such as synthetic templates, separation by different phases, nanoparticle self-assembly, and most widespread, electrospinning. Electrospinning is prevalent owing to its ease of use and low cost compared to template and self- assembly processes. This chapter describes the multifaceted progression governing electrospinning and its working factors as well as the environmental settings that form nanofibers and their resultant membranes. Additionally, the various designs of electrospinning apparatuses' and review of the methods used to prepare multifunctional composite electrospun nanofibrous membranes will be discussed. Past achievements and current challenges will be provided. Conclusions and perspectives are specified fitting to studied progress so far as well as future needs with regards to water treatment, with a particular focus on industrial applications.

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All cellulose electrospun water purification membranes nanotextured using cellulose nanocrystals

Cited by 83 publications

References 31 publications

Silica Nanofibrous Membranes for the Separation of Heterogeneous Azeotropes

Silica Nanofibrous Membranes for the Separation of Heterogeneous Azeotropes

Nanofibers for Biomedical and Healthcare Applications

Electrospun polymeric nanofibrous membranes for water treatment

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