Themed collection Editors' collection: Environmental chemistry: Pollution control

The present review covers the regeneration capacity and adsorption efficiency of different adsorbents for the treatment of industrial dyes to control water pollution.

This paper provides a review of the currently available literature focusing on arsenic removal using LDHs.

Due to their large specific surface area and abundant active surficial sites, MXenes can adsorb various environmental pollutants.

The use of pillared interlayered clays (PILCs) as heterogenous catalysts in wastewater treatment technologies, particularly advanced oxidation processes (AOPs), is gaining popularity for the treatment of refractory wastewater effluents.

Preparation of novel nanosphere material for efficient capture of toxic substances. The nanosphere material was systematically investigated for the capture of a toxic substance. The material displayed high sensitivity with high adsorption efficiency.

Remediation of Pb(II) and Cd(II) containing wastewater by arginine crosslinked chitosan/carboxymethyl cellulose beads.

Optimization of process parameters by the CCD method and electrocatalytic degradation and the electrochemical degradation mechanism of 2,4-D using modified electrode anodes were investigated.

Novel bio-magnetic membrane capsules were prepared by a simple two-step titration-gel cross-linking method using a polyvinyl alcohol and sodium alginate matrix to control the disintegration of phytogenic magnetic nanoparticles in aqueous media.

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).

ZnO/TiO₂ anchored on a reduced graphene oxide (rGO) ternary nanocomposite heterojunction was synthesized via the multi-step method including hydrothermal, solvothermal and sol–gel methods.

A highly pure BiVO₄/FeVO₄ heterojunction nanocomposite photocatalyst was synthesized by a facile hydrothermal method. The simple and economical manufacturing process allows easier industrial scale-up and the results contribute to the design of more effective photocatalysts.

Biochar is a kind of low cost and renewable adsorbents which can be used to remove dye from wastewater. The mechanism between MB and CMB involved cation exchange, electrostatic interaction, hydrogen bonding, physical function and others.

In this study, we compared the photocatalytic activity of sol–gel derived rare earth metal (La, Nd, Sm and Dy)-doped ZnO photocatalysts by studying the degradation of MB and RhB under UV light irradiation.

A sandwiched nanocomposite has been developed to remove hexavalent chromium ion Cr(VI) from water by an adsorption–reduction mechanism.

A polymer prepared by co-polymerisation of sulfur and canola oil removed Fe³⁺ from water. Microwave irradiation was convenient in promoting the polymerisation.

CuFe₂O₄ was reduced for activation of hydrogen peroxide and the reduced CuFe₂O₄ showed a relatively higher catalytic activity.

The heterojunctions between BiOI and Ag₂CO₃ obviously improved visible-light-driven photocatalytic activity compared with separate BiOI and Ag₂CO₃ particles.

MCM-41@salen, HMS-C12@salen and HMS-C16@salen sorbents present high sorption capacities for Pb(II) and are suitable materials for the removal of Pb(II).