AI Article Synopsis
- The study focuses on creating a new type of photocatalyst called Z-scheme heterojunction (3D-BiMoO@MoO/PU) which is effective in breaking down harmful pollutants like antibiotics in water.
- This photocatalyst improves the movement and separation of charge carriers when exposed to light, leading to a significant reduction (up to 88.89%) of oxytetracycline and other antibiotics within just 20 minutes.
- The results show that the physical and chemical properties of the catalyst affect its performance, highlighting its potential as a reliable solution for treating antibiotic contamination in wastewater.
Article Abstract
The designation and fabrication of heterogeneous photocatalyst with superior redox capability is an important technique for emerging pollutants treatment. In this study, we designed the Z-scheme heterojunction of stable 3D-BiMoO@MoO/PU, which could not only accelerate the migration and separation in photogenerated carriers, but also stabilize the separation rate of photo-generation carriers. In the BiMoO@MoO/PU photocatalytic system, 88.89% of oxytetracycline (OTC, 10 mg L) and 78.25%-84.59% of multiple antibiotics (SDZ, NOR, AMX and CFX, 10 mg L) could be decomposed within 20 min under the optimized reaction condition, revealing the superior performance and potential application value. Specifically, the morphology, chemical structure and optical properties detection of BiMoO@MoO/PU greatly affected the direct Z-scheme electron transferring mode in the p-n type heterojunction. Besides, the ·OH, h, ·O dominated the photoactivation process through ring-opening, dihydroxylation, deamination, decarbonization and demethylation in OTC decomposition. Expectantly, the stability and universality of BiMoO@MoO/PU composite photocatalyst would further broaden the practical application and demonstrated that the potential of photocatalytic technique in antibiotics pollutants for wastewater remediation.
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| http://dx.doi.org/10.1016/j.chemosphere.2023.138911 | DOI Listing |
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