Bamboo-like N-doped carbon nanotube–confined cobalt as an efficient and robust catalyst for activating monopersulfate to degrade bisphenol A | IDCSA, NCHU

Bamboo-like N-doped carbon nanotube–confined cobalt as an efficient and robust catalyst for activating monopersulfate to degrade bisphenol A 2021-04-14

Recycling Agriculture: Rising value of Agricultural Waste【Department of Environmental Engineering / Lin, Kun-Yirew / Distinguished Professor】
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 E_a 值相比，CoCNT + MNP 可能導致 BPA 降解的 E_a（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!