Laboratory of Environmental Sciences and Climate Change, Institute for Computational Science and Artificial Intelligence, Van Lang University, Ho Chi Minh City, Vietnam.
Faculty of Environment, School of Technology, Van Lang University, Ho Chi Minh City, Vietnam.
Environ Geochem Health. 2024 Jun 7;46(7):219. doi: 10.1007/s10653-024-01990-9.
This study investigates the removal of amoxicillin micropollutants (AM) from hospital wastewater using CoMoO-modified graphitic carbon nitride (CMO/gCN). Consequently, CMO/gCN exhibits notable improvements in visible light absorption and electron-hole separation rates compared to unmodified gCN. Besides, CMO/gCN significantly enhances the removal efficiency of AM, attaining an impressive 96.5%, far surpassing the performance of gCN at 48.6%. Moreover, CMO/gCN showcases outstanding reusability, with AM degradation performance exceeding 70% even after undergoing six cycles of reuse. The removal mechanism of AM employing CMO/gCN involves various photoreactions of radicals (•OH, •O) and amoxicillin molecules under light assistance. Furthermore, CMO/gCN demonstrates a noteworthy photodegradation efficiency of AM from hospital wastewater, reaching 92.8%, with a near-complete reduction in total organic carbon levels. Detailed discussions on the practical applications of the CMO/gCN photocatalyst for removal of micropollutants from hospital wastewater are provided. These findings underline the considerable potential of CMO/gCN for effectively removing various pollutants in environmental remediation strategies.
本研究采用 CoMoO 修饰石墨相氮化碳（CMO/gCN），考察了其从医院废水中去除阿莫西林微量污染物（AM）的效果。与未修饰的 gCN 相比，CMO/gCN 在可见光吸收和载流子分离速率方面表现出显著的提高。此外，CMO/gCN 显著提高了 AM 的去除效率，达到了令人印象深刻的 96.5%，远远超过了 gCN 的 48.6%。此外，CMO/gCN 表现出出色的可重复使用性，即使经过六次重复使用，其 AM 降解性能仍超过 70%。CMO/gCN 去除 AM 的机制涉及在光辅助下各种自由基（•OH、•O）和阿莫西林分子的光反应。此外，CMO/gCN 对医院废水中 AM 的光降解效率达到 92.8%，总有机碳水平几乎完全降低。文中详细讨论了 CMO/gCN 光催化剂在去除医院废水中微量污染物方面的实际应用。这些发现强调了 CMO/gCN 在环境修复策略中有效去除各种污染物的巨大潜力。
