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Themed collection Editors' Collection: Nanomaterials for the environment

23 items
Open Access Paper

Synergetic effect of dual co-catalysts on the activity of BiVO4 for photocatalytic carbamazepine degradation

An efficient visible-light driven three components photocatalyst for carbamazepine (CBZ) degradation has been assembled by co-loading reduction cocatalyst Pt and oxidation cocatalyst Co3O4 (MnOx) on BiVO4. An obvious synergetic effect is observed.

Graphical abstract: Synergetic effect of dual co-catalysts on the activity of BiVO4 for photocatalytic carbamazepine degradation
Open Access Paper

Highly efficient and rapid removal of arsenic(III) from aqueous solutions by nanoscale zero-valent iron supported on a zirconium 1,4-dicarboxybenzene metal–organic framework (UiO-66 MOF)

A zirconium 1,4-dicarboxybenzene metal–organic framework (UiO-66 MOF) was successfully used as a template to enhance the distribution and activity of nanoscale zero-valent iron (NZVI).

Graphical abstract: Highly efficient and rapid removal of arsenic(iii) from aqueous solutions by nanoscale zero-valent iron supported on a zirconium 1,4-dicarboxybenzene metal–organic framework (UiO-66 MOF)
Open Access Paper

Improved nanocomposite of montmorillonite and hydroxyapatite for defluoridation of water

A novel hydroxyapatite montmorillonite (HAP-MMT) nanocomposite was synthesized using a simple wet chemical in situ precipitation method. This nanocomposite showed improved adsorption properties towards fluoride ions in water.

Graphical abstract: Improved nanocomposite of montmorillonite and hydroxyapatite for defluoridation of water
Open Access Paper

Effective removal of Cr(VI) from aqueous solution by biochar supported manganese sulfide

In order to remove hexavalent chromium (Cr(VI)) efficiently and simplify the adsorbent preparation process, we employed a single step method to prepare a new biochar supported manganese sulfide material.

Graphical abstract: Effective removal of Cr(vi) from aqueous solution by biochar supported manganese sulfide
Open Access Paper

Facile synthesis of novel 3D flower-like magnetic La@Fe/C composites from ilmenite for efficient phosphate removal from aqueous solution

In this study, a novel 3D flower-like La@Fe/C magnetic composite was successfully synthesized by carbothermal reduction of ilmenite via microwave radiation.

Graphical abstract: Facile synthesis of novel 3D flower-like magnetic La@Fe/C composites from ilmenite for efficient phosphate removal from aqueous solution
Open Access Paper

Porous carbon material derived from fungal hyphae and its application for the removal of dye

A highly porous carbon material based on fungal hyphae was prepared using mixed alkali and its application for removal of dye investigated.

Graphical abstract: Porous carbon material derived from fungal hyphae and its application for the removal of dye
Open Access Paper

Single-step synthesis of eucalyptus sawdust magnetic activated carbon and its adsorption behavior for methylene blue

Eucalyptus wood-based magnetic activated carbon (MAC) was prepared by single-step carbonization activation magnetization with FeCl3 and utilized for the adsorption of methylene blue (MB).

Graphical abstract: Single-step synthesis of eucalyptus sawdust magnetic activated carbon and its adsorption behavior for methylene blue
Open Access Paper

Systematic study of TiO2/ZnO mixed metal oxides for CO2 photoreduction

A novel example using a systematic design of experiments mixture design for developing mixed metal oxide photocatalysts for CO2 photoreduction.

Graphical abstract: Systematic study of TiO2/ZnO mixed metal oxides for CO2 photoreduction
Open Access Paper

One-step synthesis of Fe2O3 nano-rod modified reduced graphene oxide composites for effective Cr(VI) removal: removal capability and mechanism

Reduced graphene oxide (rGO) supported Fe2O3 nanorod composites were prepared via a one-step hydrothermal method and further utilized for hexavalent chromium (Cr(VI)) removal from aqueous environments.

Graphical abstract: One-step synthesis of Fe2O3 nano-rod modified reduced graphene oxide composites for effective Cr(vi) removal: removal capability and mechanism
Open Access Paper

Efficient detoxification of triclosan by a S–Ag/TiO2@g-C3N4 hybrid photocatalyst: process optimization and bio-toxicity assessment

Owing to their persistency and toxicity, development of an effective strategy to eliminate antibiotic residues from the aquatic system has become a major environmental concern.

Graphical abstract: Efficient detoxification of triclosan by a S–Ag/TiO2@g-C3N4 hybrid photocatalyst: process optimization and bio-toxicity assessment
Open Access Paper

Green-synthesized copper nanoparticles as a potential antifungal against plant pathogens

The fabrication of fungicides in cost-effective and eco-friendly ways is particularly important for agriculture.

Graphical abstract: Green-synthesized copper nanoparticles as a potential antifungal against plant pathogens
Open Access Paper

Effective photoreduction of graphene oxide for photodegradation of volatile organic compounds

Photoreduced graphene oxide has a narrower band gap and better photocatalytic oxidation to degrade methanol.

Graphical abstract: Effective photoreduction of graphene oxide for photodegradation of volatile organic compounds
Open Access Paper

Synthesis of mesoporous lanthanum hydroxide with enhanced adsorption performance for phosphate removal

MLHO exhibited outstanding phosphate removal performance with a high adsorption capacity as well as efficient removal in low P concentrations.

Graphical abstract: Synthesis of mesoporous lanthanum hydroxide with enhanced adsorption performance for phosphate removal
Open Access Paper

Enhanced catalytic degradation of amoxicillin with TiO2–Fe3O4 composites via a submerged magnetic separation membrane photocatalytic reactor (SMSMPR)

With a TiO2–Fe3O4 composite as the catalyst, amoxicillin was degraded via a photo-Fenton process using a submerged magnetic separation membrane photocatalytic reactor.

Graphical abstract: Enhanced catalytic degradation of amoxicillin with TiO2–Fe3O4 composites via a submerged magnetic separation membrane photocatalytic reactor (SMSMPR)
Open Access Paper

Enhanced phosphate sequestration by Fe(III) modified biochar derived from coconut shell

In this work, a novel Fe-modified coconut shell biochar (Fe-CSB) was synthesized and utilized to remove phosphate from aqueous solution.

Graphical abstract: Enhanced phosphate sequestration by Fe(iii) modified biochar derived from coconut shell
Open Access Paper

ZnO decorated Sn3O4 nanosheet nano-heterostructure: a stable photocatalyst for water splitting and dye degradation under natural sunlight

Herein, a facile hydrothermally-assisted sonochemical approach for the synthesis of a ZnO decorated Sn3O4 nano-heterostructure is reported.

Graphical abstract: ZnO decorated Sn3O4 nanosheet nano-heterostructure: a stable photocatalyst for water splitting and dye degradation under natural sunlight
Open Access Paper

Nanocomposite functionalized membranes based on silica nanoparticles cross-linked to electrospun nanofibrous support for arsenic(V) adsorption from contaminated underground water

Development of nanocomposite functionalized membranes for the removal of As(V) from contaminated water.

Graphical abstract: Nanocomposite functionalized membranes based on silica nanoparticles cross-linked to electrospun nanofibrous support for arsenic(v) adsorption from contaminated underground water
Open Access Paper

Multi-shelled ZnO decorated with nitrogen and phosphorus co-doped carbon quantum dots: synthesis and enhanced photodegradation activity of methylene blue in aqueous solutions

The presence of organic dyes in wastewater has posed a huge threat to aquatic life and human health.

Graphical abstract: Multi-shelled ZnO decorated with nitrogen and phosphorus co-doped carbon quantum dots: synthesis and enhanced photodegradation activity of methylene blue in aqueous solutions
Open Access Paper

Preparation of CaMgAl-LDHs and mesoporous silica sorbents derived from blast furnace slag for CO2 capture

A total solution for the utilisation of BFS can be achieved and the resulting valuable products CaMgAl-LDHs and MCM-41 are promising sorbents for CO2 capture.

Graphical abstract: Preparation of CaMgAl-LDHs and mesoporous silica sorbents derived from blast furnace slag for CO2 capture
Open Access Paper

Simultaneous capture of methyl orange and chromium(VI) from complex wastewater using polyethylenimine cation decorated magnetic carbon nanotubes as a recyclable adsorbent

An MWCNTs@Fe3O4/PEI composite was facilely fabricated as a robust adsorbent for simultaneously capturing methyl orange (MO) and Cr(VI) from complex wastewater.

Graphical abstract: Simultaneous capture of methyl orange and chromium(vi) from complex wastewater using polyethylenimine cation decorated magnetic carbon nanotubes as a recyclable adsorbent
Open Access Paper

Solar-light-active mesoporous Cr–TiO2 for photodegradation of spent wash: an in-depth study using QTOF LC-MS

A dark coloured effluent called “spent wash” is generated as an unwanted product in sugar based alcohol distillery which is degraded to less toxic compounds using visible light active Cr–TiO2 photocatalyst under natural sunlight.

Graphical abstract: Solar-light-active mesoporous Cr–TiO2 for photodegradation of spent wash: an in-depth study using QTOF LC-MS
Open Access Paper

Isolated/interacting Au islands on TiO2 NTs for the switching photocatalytic/photoelectrocatalytic degradation of refractory organic pollutants in wastewater

A three-dimensional surface catalyst with isolated/interacting Au islands loaded on TiO2 nanotubes (Au/TiO2 NTs) was prepared for the switching photocatalytic/photoelectrocatalytic (PC/PEC) degradation of refractory organic wastewater, and shows prominent catalytic activity and favorable stability.

Graphical abstract: Isolated/interacting Au islands on TiO2 NTs for the switching photocatalytic/photoelectrocatalytic degradation of refractory organic pollutants in wastewater
Open Access Paper

Functionalized biochar-supported magnetic MnFe2O4 nanocomposite for the removal of Pb(II) and Cd(II)

In this study, a novel magnetic biochar-MnFe2O4 nanocomposite (BC/FM) was prepared using low-cost corn straw and MnFe2O4 by sol–gel/pyrolyzing route using egg white, which has abundant functional groups (–NH2 and –COOH).

Graphical abstract: Functionalized biochar-supported magnetic MnFe2O4 nanocomposite for the removal of Pb(ii) and Cd(ii)
23 items

About this collection

This collection, guest edited by Associate Editor Ranjit T. Koodali (Western Kentucky University), features articles published in the journal in 2019 on nanomaterials for the environment. Environmental remediation of pollutants have received significant attention due to the issues related to their impact on the health and livelihood of humans. Broadly, removal of pollutants may involve adsorption (transfer from gas/aqueous phase to a solid adsorbent) or their degradation into simple, less complex, and harmless chemicals. Nanomaterials provide enhanced capabilities to remove pollutants because of their relatively high surface areas and small particle sizes.
The examples included in this study include heavy metals such as Pb(II), Cd(II) using biomaterial waste such as corn straw, removal of Fe(III) using coconut shell based materials, use of magnetic nanocomposites to simultaneously remove organics and inorganics, use of nanofibers to remove As(V), removal of fluoride and phosphate ions, fungus, and capture of greenhouse gas such as carbon dioxide. The collection also includes articles that employ photocatalytic and/or photoelectrocatalytic techniques to degrade refractory pollutants such as nitrobenzene, “spent wash” from sugar distilleries, organic dyes, drugs such as amoxicillin, Volatile Organic Compounds (VOC) such as methanol and CO2 photoreduction.
The themed collection reflects the myriad number of innovative approaches developed by researchers to remove pollutants using novel, and often using cost-effective approaches for both the synthesis and subsequent removal of pollutants.

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