Absolute lomefloxacin degradation over visible-light-driven heterojunction: experimental and theoretical insights
- 1State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Science, Ministry of Ecology and Environment (MEE) of China Nanjing 210042 China
- 2Jiangsu Academy of Environmental Industry and Technology Corp Nanjing 210019 China
- 3Anhui University of Technology, School of Energy and Environment Maanshan 243002 Anhui China
Abstract
Rising lomefloxacin (LMF) contamination in water raises growing health and ecological concerns, driving demand for effective removal strategies. Here we report a visible-light-responsive Fe-BiOCl/Bi2WO6 heterojunction that achieves complete degradation of LMF within 6 h under optimized conditions (pH 7.0, 5 mg per L LMF, 0.2 g per L catalyst, 500 W). Iron doping markedly enhances visible-light absorption and promotes the separation and migration of photogenerated electron–hole pairs. Mechanistic studies reveal that ˙O2− generated at the conduction band of Fe-BiOCl, ˙OH at the valence band of Bi2WO6, and h+ are the primary active species, contributing approximately 76.75%, 63.22%, and 74.28% to LMF degradation, respectively. Toxicity assessment shows that the degradation products pose substantially lower risks to aquatic organisms, with reduced acute, developmental, and mutagenic effects compared to intact LMF. DFT calculations on the electronic structure and reaction pathways corroborate the experimental results, providing a mechanistic rationale for the enhanced photocatalytic performance. This work offers an efficient visible-light-driven catalyst for LMF removal and a mechanistic framework for designing doped heterojunction photocatalysts for antibiotic-contaminated water treatment.
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BibTeX
@article{gan2026absolute,
title = {{Absolute lomefloxacin degradation over visible-light-driven heterojunction: experimental and theoretical insights}},
author = {Xinhong Gan and Qingquan Zhang and Yuqing Chen and Junyang Du and Li Sun and Jianhua Yang},
journal = {RSC advances},
year = {2026},
month = oct,
doi = {10.1039/d6ra06407h},
url = {https://europepmc.org/article/PMC/PMC13656221},
note = {CC BY},
}
RIS
TY - JOUR
TI - Absolute lomefloxacin degradation over visible-light-driven heterojunction: experimental and theoretical insights
AU - Xinhong Gan
AU - Qingquan Zhang
AU - Yuqing Chen
AU - Junyang Du
AU - Li Sun
AU - Jianhua Yang
PY - 2026
DA - 2026/10/12
JO - RSC advances
DO - 10.1039/d6ra06407h
UR - https://europepmc.org/article/PMC/PMC13656221
AB - Rising lomefloxacin (LMF) contamination in water raises growing health and ecological concerns, driving demand for effective removal strategies. Here we report a visible-light-responsive Fe-BiOCl/Bi2WO6 heterojunction that achieves complete degradation of LMF within 6 h under optimized conditions (pH 7.0, 5 mg per L LMF, 0.2 g per L catalyst, 500 W). Iron doping markedly enhances visible-light absorption and promotes the separation and migration of photogenerated electron–hole pairs. Mechanistic studies reveal that ˙O2− generated at the conduction band of Fe-BiOCl, ˙OH at the valence band of Bi2WO6, and h+ are the primary active species, contributing approximately 76.75%, 63.22%, and 74.28% to LMF degradation, respectively. Toxicity assessment shows that the degradation products pose substantially lower risks to aquatic organisms, with reduced acute, developmental, and mutagenic effects compared to intact LMF. DFT calculations on the electronic structure and reaction pathways corroborate the experimental results, providing a mechanistic rationale for the enhanced photocatalytic performance. This work offers an efficient visible-light-driven catalyst for LMF removal and a mechanistic framework for designing doped heterojunction photocatalysts for antibiotic-contaminated water treatment.
SN - 2046-2069
ER -