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：Bamboo-like N-doped carbon nanotube–confined cobalt as an efficient and robust catalyst for activating monopersulfate to degrade bisphenol A 中文：竹狀 N 摻雜碳納米管限制的鈷作為一種有效且穩健的催化劑，用於活化單過硫酸鹽降解雙酚 A |
| 期刊名稱 | Chemosphere |
| 發表年份,卷數,起迄頁數 | 2021, 279, 130569 |
| 作者 | Nguyen, Ha Trang; Lee, Jechan; Kwon, Eilhann; Lisak, Grzegorz; Thanh, Bui Xuan; Ghanbari, Farshid*; Lin, Kun-Yi Andrew(林坤儀)* |
| DOI | 10.1016/j.chemosphere.2021.130569 |
| 中文摘要 | 由於雙酚 A (BPA) 是一種廣泛用於製造塑料製品的化學品，雙酚 A 排放到環境中已對生態造成嚴重威脅。因此，基於 SO4•− 的化學氧化方法已被用於消除 BPA。由於單過硫酸鹽 (MNP) 已成為獲得SO4•−的常用試劑，而 Co 是激活 MNP 的最有效金屬，因此開發非均相 Co 催化劑以便於實施和回收至關重要。在此，提出了一種獨特的 Co 基催化劑，該催化劑利用管狀結構的 N 摻雜碳基底衍生的雙氰胺（DCDA）來限制 Co 納米顆粒（NP）。通過 Co/DCDA 混合物的簡單熱解，DCDA 將轉化為 N 摻雜的碳納米管 (CNT) 以包裹所得的 Co NP，並且有趣的是，這種 N 摻雜的 CNT 將表現出特殊的竹狀形態。更重要的是，由於 Co NPs 是單分散和單獨限制在 N 摻雜的 CNTs 中，形成 CoCNT，CoCNT 表現出明顯高於 Co3O4 的催化活性，用於激活 MNP 降解 BPA。 CoCNT 催化活性的增強可能歸因於 Co NP 和 N 摻雜的 CNT 之間的協同效應，後者不僅起到支撐/保護作用，還提供活性位點。因此，與報導的 Ea 值相比，CoCNT MNP 可能導致 BPA 降解的 Ea（即 13.8 kJ/mol）低得多。此外，即使在高濃度 NaCl 和表面活性劑存在的情況下，CoCNT 仍能有效去除 BPA。 CoCNT 還可重複使用多次循環，並在 100% BPA 去除的情況下保持其催化活性，這表明 CoCNT 是一種有利且穩健的 MNP 活化催化劑。 |
| 英文摘要 | As bisphenol A (BPA) is an extensively used chemical for manufacturing plastic products, discharge of BPA into the environment has caused serious threats to ecology. Therefore, SO4•−-based chemical oxidation methods have been employed for eliminating BPA. Because monopersulfate (MNP) has become a popular reagent for obtaining SO4•−, and Co is the most efficient metal for activating MNP, it is critical to develop heterogeneous Co catalysts for easier implementation and recovery. Herein, a unique Co-based catalyst is proposed by utilizing tubular-structured N-doped carbon substrates, derived dicyandiamide (DCDA), to confine Co nanoparticles (NPs). Through simple pyrolysis of a mixture of Co/DCDA, DCDA would be transformed into N-doped carbon nanotubes (CNT) to wrap the resultant Co NP, and, interestingly, this N-doped CNT would exhibit a special bamboo-like morphology. More importantly, as Co NPs are mono-dispersed and singly-confined in N-doped CNTs, forming CoCNT, CoCNT exhibits significantly higher catalytic activities than Co3O4, for activating MNP to degrade BPA. The enhancement of catalytic activities in CoCNT would be possibly ascribed to the synergistic effects between Co NP and the N-doped CNT which not only acts as the support/protection but also provides active sites. Therefore, CoCNT MNP could lead to a much lower Ea (i.e., 13.8 kJ/mol) of BPA degradation than the reported Ea values. Besides, CoCNT is still effective for eliminating BPA even in the presence of high-concentration NaCl and surfactants. CoCNT is also reusable over many cycles and retains its catalytic activity with 100% BPA removal, demonstrating that CoCNT is an advantageous and robust catalyst for MNP activation. |
| 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! |
