同轴静电纺丝制备介孔MgAl_2O_4纤维及其吸附特性研究
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- 英文论文题名：Synthesis and Adsorption Properties of Mesoporous MgAl_2O_4 Spinel Fibers by Coaxial Electrospinning
- 论文作者：季文玲 ; 魏恒勇 ; 李慧 ; 崔燚 ; 呼世磊 ; 刘盼 ; 卜景龙 ; 杨金梦 ; 王然
- 英文论文作者：JI Wenling ; WEI Hengyong ; LI Hui ; CUI Yi ; HU Shilei ; LIU Pan ; BU Jinglong ; YANG Jinmeng ; WANG Ran ; College of Materials Science and Engineering ; Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials ; North China University of Science and Technology
- 年：2016
- 作者机构：华北理工大学材料科学与工程学院河北省无机非金属材料重点实验室;
- 论文关键词：MgAl2O4纤维 ; 介孔结构 ; 吸附
- 英文论文关键词：Mg Al2O4 fibers ; mesoporous structure ; adsorption
- 会议召开时间：2016-11-18
- 会议录名称：中国第四届静电纺丝大会（CICE 2016）摘要集
- 语种：中文
- 分类号：TQ340.64
- 学会代码：ZGNM
- 会议名称：中国第四届静电纺丝大会(CICE 2016)
- 会议地点：中国北京
- 主办单位：中国复合材料学会超细纤维材料分会（筹）
- 学会名称：中关村科创纳米技术创新研究会
- 页数：1
- 文件大小：536k
- 原文格式：D
- 会议级别：全国
摘要
利用同轴静电纺丝技术制备出介孔Mg Al2O4纤维,分析了前驱体纤维热分解历程,研究了纤维相组成演变以及介孔结构形成过程。DTA-TG和XRD结果表明,纤维经700°C热处理后出现Mg Al2O4晶相,900°C时完全结晶。SEM和TEM测试发现,经900°C热处理后纤维产生介孔结构。BET测试结果发现,Mg Al2O4纤维中存在较多介孔孔道,其比表面积为36.95 m2 g-1,孔体积为0.105 cm3 g-1,平均孔径12.295 nm。因此,该纤维样品表现出了良好的吸附性,其在20 mg L-1的甲基蓝溶液中吸附20 min,去除率超过80%。
The mesoporous Mg Al_2O_4 fibers were prepared by coaxial electrospinning technique. The details of phase compostion and porous structure development, thermal decomposition behavior, various chemical bonds and functional group of the electrospinning fibers were investigated. DTA-TG and XRD revealed gel fibers began crystallizing into Mg Al_2O_4 spinel phase at 700 °C and fully crystallizated at 900 °C. SEM and TEM analyzed the process of the pore formation, showed that the fiber with mesoporous structure formed at 900 °C. The BET analysis showed that the surface area of spinel fiber was 36.95 m~2 g~(-1), the pore volume and the average pore size were 0.105 cm~3 g~(-1) and 12.295 nm, and indicating most of the pores were the mesoporous structure. In addition, the sample exhibited excellent dye adsorption efficiency at a removal ratio greater than 80 % in 20 mg L-1 methylene blue after 20 min of adsorption.
The mesoporous Mg Al_2O_4 fibers were prepared by coaxial electrospinning technique. The details of phase compostion and porous structure development, thermal decomposition behavior, various chemical bonds and functional group of the electrospinning fibers were investigated. DTA-TG and XRD revealed gel fibers began crystallizing into Mg Al_2O_4 spinel phase at 700 °C and fully crystallizated at 900 °C. SEM and TEM analyzed the process of the pore formation, showed that the fiber with mesoporous structure formed at 900 °C. The BET analysis showed that the surface area of spinel fiber was 36.95 m~2 g~(-1), the pore volume and the average pore size were 0.105 cm~3 g~(-1) and 12.295 nm, and indicating most of the pores were the mesoporous structure. In addition, the sample exhibited excellent dye adsorption efficiency at a removal ratio greater than 80 % in 20 mg L-1 methylene blue after 20 min of adsorption.
引文
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[2]TIAN,J;TIAN,P,NING,G;et al.RSC Advances.2015,5:5123