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The abundant oxygen vacancy on CuInS2/BiOBr composite catalyst cooperated with the double Fenton system to perform efficient heterogeneous Fenton degradation of levofloxacin
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The abundant oxygen vacancy on CuInS2/BiOBr composite catalyst cooperated with the double Fenton system to perform efficient heterogeneous Fenton degradation of levofloxacin
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The abundant oxygen vacancy on CuInS2/BiOBr composite catalyst cooperated with the double Fenton system to perform efficient heterogeneous Fenton degradation of levofloxacin
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Journal Article
The abundant oxygen vacancy on CuInS2/BiOBr composite catalyst cooperated with the double Fenton system to perform efficient heterogeneous Fenton degradation of levofloxacin
2024
Overview
In this study, we prepared a series of heterogeneous Fenton catalytic materials x-CuInS
2
/BiOBr(
x
= 10–60 wt%, x-CIS/BiOBr) for the degradation of levofloxacin (LVF) by in- situ hydrothermal synthesis. X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) show that the x-CIS/BiOBr heterogeneous Fenton catalyst has abundant oxygen vacancy (O
Vs
). The experimental results showed that the degradation rate of LVF by 40%-CIS/BiOBr reached 94.1% within 60 min, and the apparent rate constant was 0.0439 min
−1
, 8.92 times that of CuInS
2
and 10.4 times that of BiOBr, respectively. The BET-specific surface area and pore volume were approximately 10 times and 7 times that of pure CuInS
2
and BiOBr. Based on the characterization and quenching experiments results, the catalytic mechanism of synergistic interaction between the dual Fenton system (In
3+
/In
+
and Cu
+
/Cu
2+
) and O
Vs
was proposed, the possible degradation pathways of LVF were analyzed, and the toxicity of its intermediates was evaluated.
Graphical abstract
Publisher
Springer International Publishing,Springer Nature B.V
