Recent Advances in Nanoporous Membranes for Water Purification

Wang, Zhuqing; Wu, Aiguo; Ciacchi, Lucio Colombi; Wei, Gang

doi:10.3390/nano8020065

Cited by 166 publications

(132 citation statements)

References 108 publications

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“…Due to useful magnetic, electrical and optical properties of ferrite nanoparticles, researchers are taking interest in the synthesis of ferrite nanoparticles and making their use in a lot of applications that include medical field, information technology, antenna, microwave absorbing materials, biosensors and many electronic applications [207][208][209][210][211][212][213][214][215][216]. Many reviews are there about the synthesis, properties and applications of ferrites in biomedical [217][218][219], catalyst [220,221] and wastewater treatment [200,[222][223][224][225].…”

Section: Applications Of Mnzn Ferritesmentioning

confidence: 99%

A review on MnZn ferrites: Synthesis, characterization and applications

Thakur

Chahar

Taneja

et al. 2020

Ceramics International

298

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Researchers are taking great interest in the synthesis and characterization of MnZn ferrites due to their wide range of applications in many areas. MnZn ferrites are a class of soft magnetic materials that have very good electrical, magnetic and optical properties. The properties of MnZn ferrites include high value of resistivity, permeability, permittivity, saturation magnetization, low power losses and coercivity. The above mentioned advantageous features of MnZn ferrites make them suitable for the use in various applications. In biomedical field these ferrites are used for cancer treatment and MRI. MnZn ferrites are also used in electronic applications for making transformers, transducers and inductors. These ferrites are also used in magnetic fluids, sensors and biosensors. MnZn ferrite is highly useful material for several electrical and electronic applications. It finds applications in almost every household appliances like mobile charger, LED bulb, TV, refrigerator, juicer mixer, washing machine, iron, microwave oven, mobile, laptop, desktop, printer and so on. Therefore, the present review focuses on different techniques for synthesis of MnZn ferrites in literature, their characterization tools, effect of doping on the properties of MnZn ferrite and finally we will discuss about their applications.

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Section: Applications Of Mnzn Ferritesmentioning

confidence: 99%

A review on MnZn ferrites: Synthesis, characterization and applications

Thakur

Chahar

Taneja

et al. 2020

Ceramics International

298

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“…Water, as a source of life, is the most important material for human survival and development [1]. Even though 71% of the earth's surface is covered with freshwater resources that can be directly used by humans, about 1.2 billion people have inadequate access to fresh potable water [2].…”

Section: Introductionmentioning

confidence: 99%

“…Even though 71% of the earth's surface is covered with freshwater resources that can be directly used by humans, about 1.2 billion people have inadequate access to fresh potable water [2]. is is due to rapid development of industries and increasing human activities, such as metal plating, fertilizers, tanneries, mining, paper, batteries, pesticides, and many harmful inorganic and organic pollutants that are released into water [3,4], which seriously endangers the freshwater resource and ecological environment, which undermines the water quality making it unsafe [1]. Diseases from unsafe drinking water and lack of basic sanitation kill more people every year than all forms of violence, accidents, and other diseases.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Nanostructured Polyamic Acid Membranes for Antimicrobially Enhanced Water Purification

Kimotho

Noah

Nawiri

et al. 2020

Advances in Polymer Technology

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Water scarcity and quality challenges facing the world can be alleviated by Point-of-Use filtration devices (POU). e use of filtration membranes in POU devices has been limited largely because of membrane fouling, which occurs when suspended solids, microbes, and organic materials are deposited on the surface of filtration membranes significantly decreasing the membrane lifespan, thereby increasing operation costs. ere is need therefore to develop filtration membranes that are devoid of these challenges. In this work, nanotechnology was used to fabricate nanostructured polyamic acid (nPAA) membranes, which can be used for microbial decontamination of water. e PAA was used as support and reducing agent to introduce silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) with antimicrobial properties. e nPAA membranes were fabricated via thermal and wet phase inversion technique and then tested against Escherichia coli and Staphylococcus aureus following standard tests. e resulting nanoparticles exhibited excellent dispersibility and stability as indicated by the color change of the solution and increments of optical density at 415 nm for AgNPs and 520 nm for AuNPs. e wet phase inversion process used produced highly porous, strong, and flexible nPAA membranes, which showed well-dispersed spherical AuNPs and AgNPs whose rough average size was found to be 35 nm and 25 nm, respectively. e AgNPs demonstrated inhibition for both gram positive E. coli and gram negative S. aureus, with a better inhibitory activity against S. aureus. A synergistic enhancement of AgNPs antimicrobial activity upon AuNPs addition was demonstrated. e nPAA membranes can thus be used to remove microbials from water and can hence be used in water purification.

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“…The material is graphene (GO), which has a hexagonal chain of carbon chains the size of an atomic order, which has excellent electrical and mechanical properties. It provides new hope for water desalination [6]. Reduction of graphene oxide (GO) can occur by thermal, chemical, or electrochemical methods.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Fe3O4/rGO Composites from Natural Sources: Application for Dyes Color Degradation in Aqueous Solution

Munasir

Kusumawati

et al. 2020

IJE

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A B S T R A C TThe magnetite (Fe3O4) nanoparticle and graphene oxide (GO) have become interesting materials due to their advanced applications. In this work, we investigated the fabrication of Fe3O4 nanoparticles (NPs) from iron sands and reduced graphene oxide (rGO) NPs from natural graphite. The core-shell fabrication of the Fe3O4/rGO was conducted by means of ex-situ method using ethanol as the medium. The crystal structure of Fe3O4/rGO was observed using X-ray diffraction (XRD) and functional groups were examined using Fourier transform infra-red (FTIR) spectroscopy. The characteristic of the disturbance originated by carbon atoms was investigated by Raman spectroscopy. The morphological, particle sizes and formation studied with transmission electron microscopy (TEM). The magnetic properties were analyzed using vibrating sample magnetometer (VSM). Furthermore, analysis of the adsorption performance, namely: dye-removal efficiency (DRE) and degradation rate (DR), as candidate materials absorbent were performed by means of UV-Vis spectroscopy. The data analysis of structure and phase of Fe3O4/rGO presented cubic spinel structure with crystallite size of 26-38 nm. The functional group analysis presented the existence of C-OH, C=O, C-O, and Fe-O. The micrograph analysis from the TEM image showed the particle size of the sample was in the range of 10 -30 nm. Along with the thickening shell, the saturation magnetization of Fe3O4/rGO decreased from 22.60 to 18.48 emu/g and decreased from 29.21 to 10.45 emu/g for Fe3O4. Finally, the rGO composition affects the shell wall, which encloses Fe3O4 as the core. Interestingly, an increase in absorption characteristic of natural dyes Fe3O4/rGO enhanced by the decrease of the shell thickness.

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Recent Advances in Nanoporous Membranes for Water Purification

Cited by 166 publications

References 108 publications

A review on MnZn ferrites: Synthesis, characterization and applications

A review on MnZn ferrites: Synthesis, characterization and applications

Fabrication of Nanostructured Polyamic Acid Membranes for Antimicrobially Enhanced Water Purification

Characterization of Fe3O4/rGO Composites from Natural Sources: Application for Dyes Color Degradation in Aqueous Solution

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