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纤维素纳米纤维化稳定皮克林乳液模板气凝具有高油脂吸收能力
Shuaib A Mubarak1, Yunsang Kim1, Islam Elsayed1
1Department of Sustainable Bioproducts, Mississippi State University, 201 Locksley Way, Starkville, Mississippi 39759, United States.
ACS omega
|October 16, 2023
概括
本研究提出了一种新的,环保的方法,使用皮克林乳液制造高性能纤维素纳米纤维气凝. 这些绿油吸收剂在没有有害化学修饰的情况下实现了特殊的容量.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 纳米技术纳米技术
背景情况:
- 纳米纤维素气凝是有希望的绿色吸油剂,因为它们的多孔结构和可持续采购.
- 提高气凝性能的传统方法通常涉及对环境有害的疏水性修改或能源密集型碳化.
研究的目的:
- 开发一种环保和高效的方法,用于制造高性能纳米纤维素气凝以吸收油.
- 通过Pickering-emulsion-templating方法创建具有层次性孔隙结构的纤维素纳米纤维 (CNF) 气凝,避免苛刻的后处理.
主要方法:
- 纤维素纳米纤维 (CNF) 气凝的制造使用油在水的皮克林乳液模板方法与n-hexane.
- 乳液模板的冷化,以形成基于空心微囊的CNF (HM-CNF) 气凝.
- 使用SEM和BET分析对气凝特性进行表征,包括密度,多孔性,表面积和孔径分布.
主要成果:
- 制造的HM-CNF气凝具有超低密度 (1.36.1 mg/cm3) 和高孔径 (≥99.6%).
- 证实了具有高表面积 (216.6 m2/g) 和平均孔径为 8.6 nm 的层次性孔隙结构.
- 实现了特殊的油吸能力:354g/g的甲酸和166g/g的n-hexadecane,没有任何表面修改.
结论:
- 皮克林乳液模板CNF气凝为吸油提供了可持续和高效的解决方案.
- 这种方法避免了对环境有害的修改,为更绿色的吸收材料铺平了道路.
- 层次结构和高表面积是这些新型气凝卓越吸油性能的关键.
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