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Effective solar light-driven isothiazolinone degradation by morphology- and oxygen vacancy-modified Gd-doped BiOCl
Antibacterial isothiazolinones are refractory organic pollutants towards biodegradation, existing in reverse osmosis concentrated water and other relevant industrial wastewater, which need to be decomposed before getting discharged into a water body. Herein, we synthesized Gd-doped flower-like hiera...
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Published in: | New journal of chemistry 2024-04, Vol.48 (14), p.6168-6179 |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | Antibacterial isothiazolinones are refractory organic pollutants towards biodegradation, existing in reverse osmosis concentrated water and other relevant industrial wastewater, which need to be decomposed before getting discharged into a water body. Herein, we synthesized Gd-doped flower-like hierarchical BiOCl (PGE-BiOCl) with promoted visible light response using a facile solvothermal method. The pseudo-first-order rate constant of 1,2-benzisothiazolinone-3-one (BIT) degradation was enhanced 6.49-fold by PGE-BiOCl (
k
= 0.610 h
−1
) compared to BiOCl (
k
= 0.094 h
−1
) under simulated visible light. It is mainly due to the synergistic effect of abundant Ovs, highly exposed (110) dominant crystal planes, and Gd doping of PGE-BiOCl. The scavenger experiments and EPR characterizations indicated that O
2
&z.rad;
−
was the dominant radical in the degradation system. The DFT calculation further confirmed the existence of O 2p orbitals near the Fermi level, which may narrow the band gap of BiOCl and improve the charge carrier separation efficiency. This work offered a promising approach for the preparation of an effective solar light-driven photocatalyst for the degradation of refractory organic pollutants in water.
Gd doped flower-like hierarchical BiOCl with highly exposed (110) facets and abundant oxygen vacancies exhibits a good photocatalytic potential. |
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ISSN: | 1144-0546 1369-9261 |
DOI: | 10.1039/d4nj00443d |