English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The study was undertaken to design magnetic core–shell Fe3O4@TiO2 nanoparticles from electric arc furnace dust and evaluate its photocatalytic activity on organic pollutant degradation from steel industry wastewater. Different molar ratios of Fe3O4 to TiO2 were tested on Fe3O4@TiO2 nanoparticles. The materials were characterized using X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform-infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and transmission electron microscopy, and a zeta potential analyzer and vibrating sample magnetometer. The behavior of Fe3O4@TiO2 nanoparticles under different molar ratios of Fe3O4 to TiO2, pH, photocatalyst dose and temperature was investigated. The apparent rate constant of organic pollutant degradation using Fe3O4@TiO2 was found to be pH dependent as it influenced the surface properties and therefore the photocatalytic activity of Fe3O4@TiO2, which was higher under acidic condition. The degradation of organic pollutants was as high as 96% at pH 3, 1 g L−1 photocatalyst dose, 30 °C temperature, after 90 min reaction time, and the apparent rate constant was 0.043 min−1. The thermodynamic parameters of activation, estimated by the Eyring equation and based on transition state theory (TST), indicated a nonspontaneous process in nature with positive Δ‡Go values, an endothermic reaction with positive Δ‡Ho and negative Δ‡So values. High degradation rate and catalyst recovery were maintained after five consecutive recycling cycles.

rsc advances

Synthesis of magnetic core–shell Fe3O4@TiO2 nanoparticles from electric arc furnace dust for photocatalytic degradation of steel mill wastewater