循環農業：農業廢棄物高價值化【環境工程學系/林坤儀特聘教授】
| 論文篇名 | 英文：Investigating crystal plane effect of Co3O4 with various morphologies on catalytic activation of monopersulfate for degradation of phenol in water 中文：研究不同形態的 Co3O4 對單過硫酸鹽催化活化降解水中苯酚的晶面效應 |
| 期刊名稱 | Applied Surface Science |
| 發表年份,卷數,起迄頁數 | 2021, 276, 119368 |
| 作者 | Liu, Wei-Jie; Wang, Haitao; Lee, Jechan; Kwon, Eilhann; Thanh, Bui Xuan; You, Siming; Park, Young-Kwon; Tong, Shaoping*; Lin, Kun-Yi Andrew(林坤儀)* |
| DOI | 10.1016/j.seppur.2021.119368 |
| 中文摘要 | 由於苯酚是廢水中最典型的持久性有機污染物，因此使用單過硫酸鹽 (MPS) 涉及 SO4•− 的化學氧化技術被認為是去除苯酚的一種有前途的方法。由於 Co3O4 是用於活化 MPS 的基準多相催化劑，因此研究具有明確定義的晶面的形狀變化的 Co3O4 催化劑以活化 MPS 以降解苯酚是非常關鍵的。因此，本研究的目的是闡明具有各種明確平面的不同 Co3O4 催化劑如何影響 MPS 活化的催化活性。具體而言，製造了三種 Co3O4 納米晶體：分別具有 {1 1 2}、{1 1 0} 和 {1 0 0} 不同主要暴露面的納米片 (NP)、納米束 (NB) 和納米立方體 (NC)。由於 {1 1 2} 和 {1 1 0} 的面由更豐富的 Co2 /Co3 組成，Co3O4-NP 和 Co3O4-NB 表現出明顯高於 Co3O4-NC 的催化活性，用於激活 MPS 降解苯酚。然而，由於 Co3O4-NP 顯示出比 Co3O4-NB 高得多的表面積，與 Co3O4-NB 相比，Co3O4-NP 可以表現出相對較高的催化活性。此外，Co3O4-NP 還表現出更快的降解動力學，在 30 °C 時的速率常數為 0.061 min-1，並且對 pH 變化具有更強的抵抗力，在 pH = 時，反應化學計量效率 (RSE) 範圍從 0.034 到 0.039 3 ~ 9，比其他兩種 Co3O4 納米晶體，使具有 {1 1 2} 面的 Co3O4-NP 成為更出色的 Co3O4，用於激活 MPS 降解苯酚。 |
| 英文摘要 | As phenol represents as the most typical persistent organic pollutants in wastewater, SO4•−-involved chemical oxidation techniques using monopersulfate (MPS) have been regarded as a promising method to eliminate phenol. Since Co3O4 is the benchmark heterogeneous catalyst for activating MPS, it is highly critical to investigate shape-varied Co3O4 catalysts with well-defined crystal planes for activating MPS to degrade phenol. Thus, the aim of this study is to elucidate how different Co3O4 catalysts with various well-defined planes would influence catalytic activities for MPS activation. Specifically, three Co3O4 nanocrystals are fabricated: nanoplate (NP), nanobundle (NB), and nanocube (NC) with different dominant exposed facets of {1 1 2}, {1 1 0}, and {1 0 0}, respectively. As the facets of {1 1 2} and {1 1 0} consist of more abundant Co2 /Co3 , Co3O4-NP and Co3O4-NB exhibit noticeably higher catalytic activities then Co3O4-NC for activating MPS to degrade phenol. Nevertheless, since Co3O4-NP shows a much higher surface area than Co3O4-NB, Co3O4-NP could exhibit a relatively high catalytic activity in comparison to Co3O4-NB. In addition, Co3O4-NP also exhibits much faster degradation kinetics with a rate constant of 0.061 min−1 at 30 °C, and more resistance towards pH variation, with much stable reaction stoichiometric efficiencies (RSE) ranging from 0.034 to 0.039 at pH = 3 ~ 9, than the other two Co3O4 nanocrystals, making Co3O4-NP with the {1 1 2} facet a more outstanding Co3O4 for activating MPS to degrade phenol. |
| 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! |
