AI Article Synopsis
- Antibiotic pollution has become a major concern due to its harmful effects, prompting the study of a new photocatalyst called BiSnO/PDIH that effectively degrades norfloxacin, an antibiotic.
- The photocatalyst achieved a remarkable 98.71% degradation of norfloxacin in just 90 minutes under visible light, with an apparent rate constant significantly higher than its individual components.
- Additionally, the study revealed that BiSnO/PDIH maintained high effectiveness in treating antibiotics even in natural water, highlighting its potential for use in real-world water treatment applications.
Article Abstract
The severe pollution caused by antibiotics has prompted considerable concerns in recent decades. In this study, the BiSnO/PDIH Z-scheme heterojunction photocatalyst was synthesized and highly photocatalytic activity on norfloxacin was obtained. The degradation of norfloxacin reached 98.71% in 90 min under visible light. The apparent rate constant of norfloxacin (0.4 903 min) was 3.65 and 20 times that of PDIH and the BiSnO. Meanwhile, XPS, electrochemical, Photoluminescence spectroscopy and electron paramagnetic resonance results showed that Z-scheme charge-transfer process facilitated the spatial carrier separation and preserve redox capability. Furthermore, the degradation intermediates of norfloxacin and their toxicities were evaluated. Finally, in the view of the survey about the impact of different water matrices, it was found that the BiSnO/PDIH maintained high efficiency in raw natural water. This work enriched inorganic/organic heterojunction engineering for PDIH, and provided the enormous potential for combining the BiSnO with PDIH to address the antibiotic pollution issues in the actual water treatment.
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| http://dx.doi.org/10.1016/j.jhazmat.2022.129317 | DOI Listing |
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