Ultrathin Reduced Graphene Oxide/Organosilica Hybrid Membrane for Gas Separation.
Ultrathin Reduced Graphene Oxide/Organosilica Hybrid Membrane for Gas Separation.
复制标题
用于气体分离的超薄还原氧化石墨烯/有机硅杂化膜
作者：
Zhao Y;Zhou C;Kong C;Chen L
在这里，还原氧化石墨烯（r-GO）纳米片被嵌入到有机硅网络中，在管状陶瓷衬底上组装超薄杂化膜。利用氧化石墨烯堆内部的有机二氧化硅纳米隔室和聚合的强化，氧化石墨烯片赋予了制备的杂化膜具有较高的H2和CO2分离性能。结果表明，在室温和0.2 MPa条件下，H2/CH4和CO2/CH4的选择性分别为223和55，H2和CO2的气体渗透率分别为2.5 × 10-7 mol·m-2·s-1·Pa-1和6.1 × 10-8 mol·m-2·s-1·Pa-1。为了从H2中分离大分子，H2/C3H8和H2/i-C4H10的选择性分别高达1775和2548。此外，在150°C和0.2 MPa下，混合膜对H2/CH4和CO2/CH4的理想选择性分别高于200和30，具有良好的分离性能，在实际应用中具有良好的气体分离和净化效果。
Here, reduced graphene oxide (r-GO) nanosheets were embedded in an organosilica network to assemble an ultrathin hybrid membrane on the tubular ceramic substrate. With the organosilica nanocompartments inside the r-GO stacks and the intensified polymerization, r-GO sheets endow the as-prepared hybrid membranes with high H2 and CO2 separation performance. The resulting selectivities of H2/CH4 and CO2/CH4 are found to be 223 and 55, respectively, together with gas permeance of approximately 2.5 × 10–7 mol·m–2·s–1·Pa–1 for H2 and 6.1 × 10–8 mol·m–2·s–1·Pa–1 for CO2 at room temperature and 0.2 MPa. To separate larger molecules from H2, the H2/C3H8 and H2/i-C4H10 selectivities are as high as 1775 and 2548, respectively. Moreover, at 150 °C and 0.2 MPa, the hybrid membrane retains high separation performances with ideal selectivities higher than 200 and 30 for H2/CH4 and CO2/CH4, respectively, which are attractive for gas separation and purification of practical applications.
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影响因子：
8.4
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通讯作者：
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影响因子：
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通讯作者：
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影响因子：
2.8
作者：
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通讯作者：
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影响因子：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
ten Elshof, Johan E.