Themed collection Nanomaterial applications in water

MXene, a type of two-dimensional material, has garnered significant interest as a promising next-generation membrane material. This work elucidates the modification strategies employed by MXene-based membranes and evaluates their performances.

Metal–organic frameworks (MOFs) are gaining considerable interest for various uses ranging from adsorption, photocatalysis, electrocatalysis, chemical sensing, catalysis and gas separation.

ZIF-based catalysts have great potential for PMS activation in environmental treatment. State of the art and prospects in recent breakthroughs are presented in this review.

Carbon nanomaterial-based membranes exhibit fascinating permselectivity for water and wastewater treatment, and their performance could be further improved under electrochemical assistance, benefiting from their good electrical conductivity.

This review provides guidance for solar absorber design, selection, and optimization, and evaporation system engineering for efficient solar-driven evaporation.

This study addresses the challenge of cobalt ion separation by developing novel MOF nanofibers, Co(II)-PIIMs.

Co/N-PC-T (600, 700, 800, 900) were successfully obtained by calcining the precursor Co@Zn-MOF, and Co/N-PC-800 exhibited excellent peroxymonosulfate activation for CBZ, achieving 98% degradation within 30 minutes.

Our colorimetric sensor developed with cyclodextrin-modified gold nanoparticles provides a nano-sensor for the visual detection of PFOA with simplicity, rapid detection, and cost-efficiency.

Polymer–iron oxide nanofiber composites.

Synergistic effects of components in Bi/β-Bi₂O₃@carbon enhance the activity. Electron-deficient species attack FWA351, resulting in breaking of CC bonds and opening of aromatic rings, ultimately mineralizing into CO₂, H₂O and inorganic salts.

Degradation of microplastics (MPs) through the photocatalytic and photo-Fenton process using Fe-modified TiO₂ aerogel powders.

Cu doping enhances charge separation in BiO_2−x nanosheets, activating PMS for efficient ciprofloxacin degradation under light irradiation.

A rational design of water-stable and high-efficiency MOF-based electrocatalysts for achieving durable sensitive electrochemical sensors for pollution detection remains a great challenge.

A Ce-doped hydrotalcite was synthesized, which completely removed tetracycline hydrochloride in the photo-Fenton system within 60 min.

The sequential S-nZVI/PDS process is a very promising and efficient approach for the complete mineralization of 2,4-DCP.

Passivation increases the coating's stability and reduces the release of silver ions without compromising biofouling resistance.

There is not much research on how to control the PDS reaction pathway. This work reports that O_v-containing ZnO@nitrogen-rich porous carbon composites activate PDS to remove SMZ only through ¹O₂ and electron transfer.

The sulfur-functionalized porous carbon microspheres provide a feasible and low-cost strategy for the selective recovery of Pd from highly acidic wastewater.

CeO₂/graphene oxide nanocomposites efficiently degrade bisphenols A, S, and F. Hydrolytic cleavage of bisphenol S was observed even without any illumination.

An ohmic junction was developed by incorporating TiO₂ nanoparticles into 2D Mo₂AlB₂ using ultrasound-assisted self-assembly. This novel composite showed enhanced photocatalytic degradation of carbendazim, accelerating pesticide breakdown.

The developed LaCCH exhibited an enhanced capacity of 308.2 mg_P g_La⁻¹, revealing a strong correlation between the organic–inorganic interaction energy of La oligomers and hydrogel carriers, and the phosphate adsorption capacity.

2D-BMO fluorescent nanosheets were synthesized using a solvothermal method followed by probe sonication.

A portable and wireless sensor system based on graphene for fast and sensitive detection of lead ions in water.

Fabrication of cauliflower-like Fe(III) carboxylate MOF-based catalyst for degradation of MTZ via ROS generation in a solar-light-activated photocatalytic system and testing its efficacy under various water parameters and environmental substrates.

RuCl₃-modified hollow Co₃O₄ nanospheres (Ru³⁺-C@Co₃O₄ HNSs) were utilized to establish a colorimetric sensor for selective determination of S²⁻ ions.

A simple-to-manufacture and inexpensive biosensor based on a nanostructured copper electrode, mediators and immobilized yeast or bacteria is proposed for determining the biochemical oxygen demand in wastewater.

This study demonstrates that GO membranes enable efficient separation of aqueous and alcoholic vapor mixtures and discusses the critical vapor-permeation mechanism.

A CeNiCu-LDH@CC electrochemical sensor for efficient detection of 2,4-dichlorophenol and 3-chlorophenol.

Mechanism diagram of TC-HCl degradation in the PTA-LDHs/H₂O₂/vis system.

Activating persulfate to generate reactive oxygen species (ROS) for the effective degradation of toxic organic compounds is an important research topic in environmental management.

Here, a novel MOF-based photo-Fenton material (Ce/W-MIL-88B(Fe)) was fabricated, which achieved synchronous arsenate (As(V)) uptake and nitrite (NO₂⁻) resourcing.

Cu–cy/Ti₃C₂MXene demonstrated outstanding catalytic performance in activating peroxymonosulfate, leading to the production of reactive oxygen species that decomposed up to 98.6% of carbamazepine.

Co@MXene activation of peracetic acid and degradation of sulfamethazine via two major pathways: non-radical activation and organic radical activation.

A recyclable metal-free photocatalytically active hybrid fiber is fabricated, and presents a significantly photo-enhanced removal effect on tetracycline.

The MIL-100@ZIF-67@MXene composite was synthesized for the enhanced degradation of carbamazepine (CBZ) and activation of peroxymonosulfate (PMS).

Cu–Fe bimetallic synergy plays an important role in the generation of SO₄·⁻.

A simple room temperature fabrication methodology was reported in this work to prepare an interfacial solar evaporator for achieving stable water evaporation performance, with excellent anti-oil fouling capability.

The establishment of a heterojunction holds significant promise for facilitating the separation and migration of photogenerated carriers, thereby engendering robust photooxidation–reduction capabilities.

FePc supported on 2D rGO has the enhanced catalytic activity. The prepared FePc@rGO nanocomposites not only can catalyze the oxidation of colorimetric substrates, but also can degrade RhB with the help of PMS.

Selectively and efficiently capturing trace titanium dioxide nanoparticles (TiO₂NPs) in environmental waters is a prerequisite for their determination to understand their occurrence, behavior and effects in the environment.

A novel environment-friendly oxygen-vacancy-rich Cu-doped zeolite decorated with Cu⁰ (Cu⁰@CuZ) was fabricated to achieve the high-efficiency removal of refractory organic pollutants in a photo-Fenton-like reaction.

The crystallinity of ultrathin Co₃O₄ nanosheet was tuned by adjusting the calcination atmosphere. The enriched oxygen vacancies, PMS-binding affinity and rapid Co²⁺/Co³⁺ conversion triggered both radical and nonradical reactions for SMX oxidation.

Al-MOF synthesized based on MOF irradiation stability rules exhibits high stability against β-irradiation and ultra-high thorium adsorption capacity, which proves its huge potential application value in the field of radionuclide adsorption.

Nucleation and growth of terbium-doped amorphous calcium phosphate (Tb-ACP) on cellulose fibers of a microfluidic paper-based analytical device (μPAD) towards an environmentally friendly design of a sensor for water pollutant.

Higher order trends in the photocatalytic activity of semiconductors, concerning environmental remediation and energy applications, under increasing light illumination may originate in part or in whole from potential dependent kinetics.

S doping promoted the conversion of Fe(III) to Fe(II), which greatly improved the performance of the Fenton-like reaction.

A core–shell silver-encapsulated polypyrrole, Ag@PPy, was prepared via in situ synthesis for simultaneous efficient adsorption and immobilization of iodide and iodate.

The continuous monitoring of remote drinking water purification systems is a global challenge with direct consequences for human and environmental health. Nanoplasmonic sensors can monitor treatment systems and warn of failures.

The elaborate design of the peroxydisulfate-based nonradical oxidation process. Nitrogen vacancies enhanced the surface affinity between the catalyst and PDS, and thus, the formation of the key complex (i.e., ACN–PDS*).

Fe₃S₄/Ti₃C₂MXene shows over 90% TC degradation via Fenton activity, driven by the generation of reactive oxygen species. It exhibits remarkable reusability and stability over multiple cycles, promising sustainable TC removal from wastewater.

Most researchers believe that the high catalytic activity of FeOCl originates from its unique structure. In this study, we show that dissolved iron contributes significantly to the catalytic activity of FeOCl in the Fenton and photo-Fenton processes.

A carbonized PAN array was designed and applied as an effective SERS substrate. It provided a significant signal enhancement (∼10⁵) with its strong broadband charge-transfer resonance and high reproducibility and consistency in the SERS spectrum.

Pharmaceutical-induced water pollution threatens health and ecosystems. Advanced oxidation, like electrocatalysis with peroxymonosulfate and calcium copper titanate as a key catalyst, shows promise for removing trace pollutants.

Nanoconfinement in silica nanopores strengthens hydrogen bonds near surfaces, and weakens hydrogen bonds in nanopore volume away from the surfaces.

In this study, carbon black nanoparticles were introduced in one-step to develop a super-hydrophobic polystyrene foam with efficient photo-thermal conversion and adsorption for highly viscous crude oil.

A rational approach for exploiting the physicochemical properties of porous silica nanospheres (pSN) affecting biomolecule immobilization and aromatic water pollutant monitoring has been demonstrated.

A heterostructured diatomic catalyst synthesized by a microwave hydrothermal method accelerates interfacial charge transfer and enhances the ability to treat antibiotic wastewater.

The incubation of agarose hydrogels embedded with BSA and chloroauric acid in alkali solutions facilitates the in situ growth of gold nanoclusters in capillary microcontainers, enabling the portable detection of ClO⁻ with fluorescent responses.

The influence of the preparation process (sulfurization method, sulfur reagents, and S/Fe molar ratio) and the decontamination conditions (initial pH value, and temperature) on the decontamination effect was quantitatively evaluated by meta-analysis.

The combination of peptide nanosheets and magnetic Fe₃O₄ nanozymes promotes colorimetric detection and selective adsorption of Hg²⁺.

Proposed mechanism of catalytic ozonation in different surface acid sites of oxide aqueous suspensions.

The hollow Cu–Co HNB catalyst selectively reduces NO₃⁻ to N₂ by tandem catalysis in a chlorine-free system.

A novel hierarchical structured Cu@carbon/carbon cloth film is developed for highly-efficient interfacial solar steam generation.

The in situ ultrasonic texturization of commercial Fe powder was employed to replace the n-ZVI for U(VI) extraction in fluoride (F⁻)-containing wastewater.

In this study, we present a novel strategy of accelerating cycle of Fe(II)/Fe(III) in iron-mediated catalyst for heterogeneous Fenton-like processes.

Graphene-supported C₃N₄/TiO₂ hetero-aerogels with high photocatalytic properties and sustainability are designed and synthesized.

Iron-based poly(ionic liquid)/polydopamine composite shows excellent degradation performance for organic pollutants, providing a promising route for the design of efficient and stable heterogeneous Fenton catalysts.

Schematic diagram of the photocatalytic reduction mechanism for the PAM40 system.

A leaf vein-biomimetic nanofibrous membrane was constructed by nonsolvent-induced phase inversion for high-performance surface filtration of water contaminants.

Harmful algal blooms lead to cyanobacteria toxins increase in natural water. A novel nanochannel-based sensing system utilizing metal–organic frameworks and DNA aptamers was developed for highly sensitive detecting microcystin-LR in real water.