AI Article Synopsis
- A new composite made of graphite and sulfur iron tailings was used to activate peroxydisulfate (PDS) for breaking down rhodamine B (RhB) in water, showing high catalytic efficiency.
- The study identified carbonyl groups and iron species as key active sites that facilitate the degradation of RhB through both radical and non-radical processes, supported by various chemical analysis techniques.
- With a concentration of 0.30 g/L of the composite, PDS achieved a 94.8% removal rate for RhB and maintained an over 85% removal rate across five cycles, highlighting the potential of iron/carbon composites for water treatment applications.
Article Abstract
Herein, a novel graphite/sulfur iron tailing composite was applied as a peroxydisulfate (PDS) activator for rhodamine B (RhB) degradation in the water. The superior catalytic efficiency of graphite/sulfur iron tailing was achieved through radical (SO and •OH) and non-radical (O) processes according to the radical quenching experiments and electron paramagnetic resonance analysis. The carbonyl group and Fe species were the main active sites on the surface of graphite/sulfur iron tailing, which was demonstrated by combining Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and reaction kinetic experiments, and a possible degradation mechanism was also proposed. Overall, activated with 0.30 g/L of C-1, PDS achieved a 94.8% removal rate for RhB and maintained a removal rate of over 85% even after five consecutive operation cycles, and this study will benefit the application of iron/carbon composite materials in practical water treatment.
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| http://dx.doi.org/10.1007/s11356-024-34811-8 | DOI Listing |
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