Synthesis of magnetically separable Bi2O2CO3/carbon nanotube/ZnFe2O4 as Z-scheme heterojunction with enhanced photocatalytic activity for water purification
Source abstract
Abstract
To utilize Bi2O2CO3 as an efficient photocatalyst, it is of utmost interest to design a system that not only promotes the broad range absorption but also facilitates recyclability and speedy separation of photocatalyst. In this work, magnetically separable Z-scheme Bi2O2CO3/carbon nanotubes/ZnFe2O4 photocatalyst (BOC/CNT/ZF) was synthesized through a simplistic one-step hydrothermal approach investigated for 2,4-dimethyl phenol (DMP) degradation under visible light exposure. The structural and morphological features of photocatalyst were explored using XRD, FTIR, FESEM, HRTEM, and EDX mapping analysis. The UV-visible spectroscopy indicated extended visible light activity of prepared photocatalyst. The photocatalyst was magnetically separated from reaction solution in 20 s. The Z-scheme approach during photocatalysis process was validated using radical scavenging, electrochemical impedance and photoluminescence analysis. CNT mediated Z-scheme electron migration mechanism was proposed which explicate remarkable augmentation in photodegradation ability for DMP degradation. The hydroxyl radicals generated via Z-scheme mode were responsible for mineralization of DMP into CO2 and H2O. BOC/CNT/ZF photocatalyst displayed significant photocatalytic efficiency during the recycle experiment. In addition, significant activity for other phenolic compounds credited it as perspective for long-term practical use in environmental remediation.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors · TiO2 Photocatalysis and Solar Cells
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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