循環農業：農業剩餘資材及生質衍生物高值化轉換再利用【環境工程學系/林坤儀特聘教授】
| 論文篇名 | 英文：Electron transfer-mediated enhancement of superoxide radical generation in fenton-like process: Key role of oxygen vacancy-regulated local electron density of cobalt sites 中文：電子轉移介導的類芬頓過程中超氧自由基產生的增強：氧空位調節鈷位點局部電子密度的關鍵作用 |
| 期刊名稱 | Applied Catalysis B: Environmental |
| 發表年份,卷數,起迄頁數 | 2024, 343: 123490 |
| 作者 | Khiem, Ta Cong; Huy, Nguyen Nhat; Kwon, Eilhann; Lee, Jechan; Oh, Wen Da; Duan, Xiaoguang; Waclawek, Stanislaw; Wang, Haitao; Lisak, Grzegorz; Ghanbari, Farshid; Lin, Kun-Yi Andrew(林坤儀)* |
| DOI | 10.1016/j.apcatb.2023.123490 |
| 中文摘要 | 設計具有氧空位（OV）的金屬氧化物是增強類芬頓過程的前瞻性策略。然而，OV是什麼、OV增強是否會提高催化性能、OV相關的H2 O2活化以及OV與ROS或非自由基途徑之間的關係尚未完全了解。在此，製備了具有各種OV的蛋黃殼Co3 O4奈米球，以克服上述有爭議的問題，並建立了通過H2 O2活化降解磺胺嘧啶（SDZ）時OV、 ROS和電子轉移之間的關係。結果表明，隨著OV的增加，OV周圍的離域富電子Co位點可以提高電導率，從而導致更強的吸附和H2 O2的活化，產生更多的· OH，這可以透過吸附能減弱和OO鍵延長來證明。隨著時間的推移，• OH 的快速耗盡加上 O2 •−的增加以及SDZ電子轉移的出現，探索了一條增強SDZ 降解的O2 •−生成的途徑。 |
| 英文摘要 | Designing metal oxides with oxygen vacancy (OV) is a prospective strategy for boosted Fenton-like process. However, what OV is, whether OV enhancement increases the catalytic performance, OV-related H2 O2 activation, and relationship between OV and ROS or non-radical pathways have not been fully understood. Herein, yolk-shell Co3O4 nanospheres with various OV were fabricated to overcome the above contentious problems and establish a relationship between OV, ROS, and electron transfer in sulfadiazine (SDZ) degradation via H2O2 activation. The results showed that the delocalized electron-rich Co sites around OV with increasing OV allowed the improved conductivity, thereby leading to stronger adsorption and activation of H2 O2 to generate more •OH as evidenced by the attenuated adsorption energy and prolonged O-O bond. The subsequent rapid depletion of •OH coupled with the increase in O2•− over time and the emergence of electron transfer from SDZ explored a pathway enhancing O2•− generation for SDZ degradation. |
| 發表成果與本中心研究主題相關性 | 透過本研究可進一步建立開發本研究計算所需之觸媒材料，並釐清可適合應用之環境條件! |
