新穎材料農業：友善環境農業新穎材料研發與安全評估【土壤環境科學系/鄒裕民特聘教授】
| 論文篇名 | 英文：Novel MOF-808 metal–organic framework as highly efficient adsorbent of perfluorooctane sulfonate in water 中文：新型 MOF-808 金屬有機骨架作為全氟辛烷磺酸在水中的高效吸附劑 |
| 期刊名稱 | JOURNAL OF COLLOID AND INTERFACE SCIENCE |
| 發表年份,卷數,起迄頁數 | 2022, 623, 627–636 |
| 作者 | Chang, Po-Hsiang; Chen, Chien-Yen; Mukhopadhyay, Raj*; Chen, Wenhua; Tzou, Yu-Min(鄒裕民)*; Sarkar, Binoy |
| DOI | 10.1016/j.jcis.2022.05.050 |
| 中文摘要 | 全氟辛烷磺酸(PFOS)是一種受到人們關注的高持久汙染物，對人類健康和生態系統都造成有害影響。在這項研究中，製備了一種新型金屬-有機框架(MOF)-MOF-808，並對其從水溶液中移除PFOS進行評估。MOF-808具有高比表面積(SSA: 1610 m2 g-1)，並且能在不同pH環境的水介質中穩定結構7天。MOF-808在30分鐘內達到PFOS吸附平衡(初始PFOS為500 mg L-1)，並在pH 4.1-5.4(初始PFOS為50-500 mg L-1)下達到最大吸附量(939 mg g-1)。MOF-808的吸附能力在pH 2-7時不受影響，但在pH > 7時逐漸降低。MOF-808的高比表面積、有利的孔徑大小、豐富的活性吸附位點，觸發了吸附劑對PFOS的高吸附能力。PFOS在自然環境下的吸附過程上是吸熱和自發性的，MOF-808的陽離子中心簇([Zr6O4(OH)4]12+)與PFOS陰離子之間的靜電相互作用已經被確定是MOF-808吸附PFOS的關鍵機制，這從吸附劑的紅外光譜研究中可以看出。這項研究表明，MOF-808可以被認為是一種從水中移除PFOS的高效吸附劑，並確保在未來的研究可以評估該材料在廢水條件下的應用和表現。 |
| 英文摘要 | Perfluorooctane sulfonate (PFOS) is a highly persistent contaminant of emerging concern causing harmful effects to human and ecosystem health. In this study, a novel MOF-808 metal–organic framework (MOF) was prepared and evaluated for adsorptive removal of PFOS from aqueous solution. The MOF-808 had high specific surface area (SSA; 1610 m2/g) and was structurally stable in aqueous medium for 7 days under different pH conditions. The MOF-808 reached PFOS adsorption equilibrium within 30 min (at 500 mg/L initial PFOS) and attained the maximum adsorption capacity of 939 mg/g at pH 4.1 – 5.4 (with 50 – 500 mg/L initial PFOS). The PFOS adsorption capacity of MOF-808 was unaffected at pH 2 to 7, but gradually decreased at pH > 7. High SSA, favorable pore size and abundant active adsorption sites on MOF-808 triggered high PFOS adsorption onto the adsorbent. The PFOS adsorption process was endothermic and spontaneous in nature. Electrostatic interaction between the cationic central cluster ([Zr6O4(OH)4]12+) of MOF-808 and PFOS anion was identified as the key mechanism of PFOS adsorption onto MOF-808, as evident from the infrared spectroscopic investigation of the adsorbent. This study suggests that MOF-808 can be considered as a highly efficient adsorbent for PFOS removal from water and warrants future research to evaluate the application and performance of the material under wastewater conditions. |
| 發表成果與本中心研究主題相關性 | 全氟辛烷磺酸(PFOS)是近年來一種受到人們所關注的持久性有機汙染物, 對人類健康和生態系統都造成有害影響。本研究發展了新型金屬-有機框架(MOF)-MOF-808之材料, 其為一高效之吸附劑, 可有效地從水溶液中移除PFOS, 以利水質淨化, 對水資源的循環利用有很大的幫助。 |
