MCM-41@ZIF-8/PDMS hybrid membranes with micro- and nanoscaled hierarchical structure for alcohol permselective pervaporation
MCM-41@ZIF-8/PDMS hybrid membranes with micro- and nanoscaled hierarchical structure for alcohol permselective pervaporation
复制标题
用于酒精选择性渗透渗透蒸发的微米级和纳米级分层结构的MCM-41@ZIF-8/PDMS杂化膜
DOI：
10.1016/j.seppur.2015.09.004
复制
发表时间：
2015-10
影响因子：
8.6
通讯作者：
Ji Shulan
中科院分区：
文献类型：
--
作者：
Wang Naixin;Shi Guixiong;Gao Jing;Li Jie;Wang Lin;Guo Hongxia;Zhang Guojun;Ji Shulan
在乙醇渗透汽化过程中，膜的疏水性通常起着重要的作用。膜表面的微观结构对其疏水性有很大影响。本研究制备了具有微纳尺度层次结构的MCM-41@ZIF-8/PDMS杂化膜。在微米级MCM-41表面原位生长了ZIF-8纳米晶，制备了MCM-41@ZIF-8杂化颗粒。用疏水硅烷偶联剂对杂化粒子进行改性，使其成为超疏水粒子，分散在PDMS基质中，形成复合膜。MCM-41@ZIF-8/PDMS膜的疏水性因其层次化结构而得到改善。从而提高了膜的酒精亲和力。此外，由于MCM-41和ZIF-8颗粒的多孔性，杂化膜的通量显著提高。制备的MCM-41@ZIF-8/PDMS杂化膜具有较高的膜通量(2201微克/米~2)，对5.0wt%乙醇/水混合物的分离系数为10.4。此外，这些膜还可用于分离正丁醇/水混合物，具有良好的分离性能。因此，该膜有望在乙醇渗透选择性渗透汽化中具有潜在的应用前景。
In the alcohol permselective pervaporation process, the hydrophobicity of the membrane usually plays an important role. The microstructure of membrane surface has significant influence on its hydrophobicity. In this study, a MCM-41@ZIF-8/PDMS hybrid membrane with micro- and nanoscaled hierarchical structure was prepared. ZIF-8 nanocrystal in situ grew on the surface of microscaled MCM-41 to fabricate MCM-41@ZIF-8 hybrid particles. These hybrid particles were modified by hydrophobic silane coupling agent to become superhydrophobic, and dispersed in PDMS matrix to form a composite membrane. The hydrophobicity of MCM-41@ZIF-8/PDMS membrane improved because of its hierarchical structure. The alcohol affinity of the membrane was thus enhanced. Moreover, owing to the porosity of MCM-41 and ZIF-8 particles, the flux of the hybrid membrane was significantly improved. The prepared MCM-41@ZIF-8/PDMS hybrid membranes exhibited a relative high flux (2201 g/m2h) with a separation factor of 10.4 in the separation of 5.0 wt% ethanol/water mixtures. In addition, these membranes can also be used in separatingn-butanol/water mixtures with excellent separation performance. Therefore, the membrane is expected to have potential application in alcohol permselective pervaporation.
登录
查看更多内容
影响因子：
3.9
作者：
Jie Li;Naixin Wang;Hao Yan;S. Ji;Guojun Zhang
通讯作者：
Jie Li;Naixin Wang;Hao Yan;S. Ji;Guojun Zhang
响应面法优化聚二甲基硅氧烷（PDMS）/陶瓷复合渗透汽化膜的制备条件
影响因子：
9.5
作者：
Wei Wang;Xiangli Fenjuan;Jin Wanqin;Chen Yiwei;Xu Nanping
通讯作者：
Xu Nanping
影响因子：
2.8
作者：
P. Peng;Baoli Shi;Yongqiang Lan
通讯作者：
P. Peng;Baoli Shi;Yongqiang Lan
DOI：
10.1016/j.memsci.2011.02.042
发表时间：
2011-05
期刊：
Fuel and Energy Abstracts
影响因子：
--
作者：
Gongpin Liu;Wang Wei;Hao Wu;Xueliang Dong;M. Jiang;W. Jin
通讯作者：
Gongpin Liu;Wang Wei;Hao Wu;Xueliang Dong;M. Jiang;W. Jin
影响因子：
6.7
作者：
T. Jesionowski;J. Żurawska;A. Krysztafkiewicz;Monika Pokora;D. Waszak;W. Tylus
通讯作者：
T. Jesionowski;J. Żurawska;A. Krysztafkiewicz;Monika Pokora;D. Waszak;W. Tylus