预置纳米MOF-5晶种二次生长法合成MOF-5膜

摘要/Abstract

摘要：

以Zn(O₂CCH₃)₂为锌源采用溶剂热法合成了纳米级金属有机骨架MOF-5晶体，并以此为晶种预置在多孔α-Al₂O₃载体的表面以形成连续的晶种层，再利用二次生长法制备出超薄且连续的MOF-5晶体膜。实验结果表明：以Zn(O₂CCH₃)₂为锌源所制得的MOF-5晶体能保持了MOF-5的立方体形貌且具有较高的结晶度和比表面积，晶体的颗粒大小均一，尺寸集中在500～800 nm范围内，仅以Zn(NO₃)₂为锌源制得的MOF-5晶体粒径的1/100；以这种纳米级

Abstract:

Continuous, crake-free and ultrathin metal organic framework (MOF-5）membranes were prepared on α-Al₂O₃ supports by the secondary growth method.By changing zinc source from Zn(NO₃)₂ to Zn(O₂CCH₃)₂, the novel nano-sized MOF-5 crystals could be synthesized in a solvo-thermal process.SEM, XRD and N₂ adsorption measurements indicated that the morphology and framework structure of the MOF-5 crystal synthesized by using Zn(O₂CCH₃)₂ matched well with the published SEM image and XRD pattern for the MOF-5, but its crystal size was reduced by two orders of magnitude from ～50 μm—100 μm to ～500 nm—800 nm with a larger surface area.By seeding the nano-sized MOF-5 crystals, a continuous and uniform seeding layer on the porous α-Al₂O₃substrate was formed.The SEM micrographs indicated a high density, uniform and adequate coverage of MOF-5 crystals prevailing on α-Al₂O₃ substrate with the thickness of 4 μm.After secondary growth, an ultrathin, continuous and crack-free MOF-5 membrane was obtained.XRD pattern for the MOF-5 membranes showed the randomly oriented structure of the MOF-5 crystals.XRD data showed that the obtained MOF-5 membrane was densely-packed with randomly oriented MOF-5 crystals.SEM image showed well inter-grown continuous MOF-5 membrane.The membrane thickness was only about 6 μmwith invisible inter-crystalline gaps, which was much thinner than the previously reported literatures.

赵祯霞, 李忠, 林跃生. 预置纳米MOF-5晶种二次生长法合成MOF-5膜 [J]. 化工学报, 2011, 62(2): 507-514.

ZHAO Zhenxia, LI Zhong, Jerry Y.S.LIN. Secondary growth synthesis of MOF-5 membranes by dip-coating nano-sized MOF-5 seeds[J]. CIESC Journal, 2011, 62(2): 507-514.

[1]	张艾萍, 谢立强, 徐志明. 超声空化对换热器协同场的影响 [J]. 化工学报, 2011, 62(S1): 130-133.
[2]	曾庆, 郭印诚, 牛振祺, 林文漪. 填料塔中氨水吸收二氧化碳的传质性能 [J]. 化工学报, 2011, 62(S1): 146-150.
[3]	褚燕彬, 曹柳林, 王晶. 利用组合B样条神经网络实现对间歇反应过程的动态建模 [J]. 化工学报, 2011, 62(S1): 157-162.
[4]	吴海波, 方岩雄, 纪红兵. 助溶剂促进的β-环糊精与肉桂醛的包结性能 [J]. 化工学报, 2011, 62(S1): 168-173.
[5]	任楠, 王涛, 吴玉庭, 马重芳. 混合碳酸盐的DSC测量与比热容分析 [J]. 化工学报, 2011, 62(S1): 197-202.
[6]	王建立, 朱建军, 宋辰兴, 张兴. 3ω法测量纳米流体热导率 [J]. 化工学报, 2011, 62(S1): 42-47.
[7]	马维刚, 王海东, 张兴, 王玮. 多晶金薄膜电子-声子耦合的实验研究 [J]. 化工学报, 2011, 62(S1): 48-53.
[8]	崔福庆, 何雅玲, 程泽东, 李东, 陶于兵. 有压腔式吸热器内辐射传播过程的Monte Carlo模拟 [J]. 化工学报, 2011, 62(S1): 60-65.
[9]	何奎, 汪双凤, 黄间珍. 气液两相流在微小T型三通中的相分配特性 [J]. 化工学报, 2011, 62(S1): 92-96.
[10]	刘绩伟, 吴玉庭, 马重芳. 管肋式空间辐射器设计 [J]. 化工学报, 2011, 62(S1): 103-107.
[11]	李旺, 王情愿, 李瑞龙, 李超, 宇波, 张劲军, 代鹏飞. 大型浮顶油罐温度场数值模拟 [J]. 化工学报, 2011, 62(S1): 108-112.
[12]	胡朝发, 贾力. 脉动热管气液塞振荡运动模型 [J]. 化工学报, 2011, 62(S1): 113-117.
[13]	王勤辉，杨秋辉，吴学成，骆仲泱，岑可法. 多相流中颗粒旋转运动特性的研究进展 [J]. CIESC Journal, 2011, 62(9): 2381-2390.
[14]	刘夺, 杜瑾, 赵广荣, 元英进. 合成生物学在医药及能源领域的应用 [J]. 化工学报, 2011, 62(9): 2391-2397.
[15]	马淳安，储诚普，徐颖华，张虹. 3,6-二氯吡啶甲酸合成方法进展 [J]. CIESC Journal, 2011, 62(9): 2398-2405.

预置纳米MOF-5晶种二次生长法合成MOF-5膜

Secondary growth synthesis of MOF-5 membranes by dip-coating nano-sized MOF-5 seeds

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价