Non-Thermal Plasma Assisted Photocatalytic Degradation of Isoflurane over Visible Light Responsive Hierarchical HKUST-1
نویسندگان
1 Department of Environmental Health Engineering, School of Public Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan 65178-38736, Iran
2 Center of Excellence for Occupational Health, Occupational Health and Safety Research Center, School of Public Health, Hamadan University of Medical Sciences, Hamadan 65178-38736, Iran
3 Department of Environmental Health Engineering, School of Public Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan 65178-38736, Iran
4 Center of Excellence for Occupational Health, Occupational Health and Safety Research Center, School of Public Health, Hamadan University of Medical Sciences, Hamadan 65178-38736, Iran
5 Department of Materials Engineering, Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran
6 Department of Environmental Health Engineering, School of Public Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan 65178-38736, Iran
7 Department of Environmental Health Engineering, School of Public Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan 65178-38736, Iran
8 Department of Chemistry, Bu-Ali-Sina University, Hamedan, 65174-38683, Iran
9 Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
doi
10.22036/abcr.2026.576111.2553چکیده
Volatile halogenated anesthetic gases, such as Isoflurane, are considered persistent atmospheric pollutants with potential environmental impacts. In this study, a visible-light-responsive hierarchical photocatalyst composed of ZnO nanoparticles coupled with Cu-BTC metal organic framework and supported on perlite (P@ZnO/Cu-BTC) was synthesized via the solvothermal method and applied for isoflurane degradation. Characterization results revealed that coupling ZnO with Cu-BTC, followed by perlite modification, narrowed the band gap and improved charge separation efficiency. Band structure analysis further confirmed enhanced electron-hole dynamics and visible light absorption capability. The effects of operational variables, including air flow rate, relative humidity, and initial isoflurane concentration, were investigated and optimized using response surface methodology. P@ZnO/Cu-BTC achieved a maximum degradation efficiency of 44.67% under visible light alone, while the combined NTP/P@ZnO/Cu-BTC system reached 91.91% under optimum conditions (flow rate 60 mL min-1, relative humidity 50%, initial concentration 60 ppm, voltage 15 kV). Integration with the non-thermal plasma system significantly enhanced mineralization to CO2 while minimizing the formation of undesirable gaseous by-products. Gas-phase analysis also showed low levels of NOx and ozone generation. Overall, the results demonstrate that combining MOF-based heterojunction photocatalysts with non-thermal plasma technology provides an effective and environmentally friendly strategy for removing volatile halogenated pollutants from air streams.
