Reliable fabrication of preferentially b-oriented silicalite-1 monolayers on various substrates using the Langmuir–Blodgett technique
Reliable fabrication of preferentially b-oriented silicalite-1 monolayers on various substrates using the Langmuir–Blodgett technique
复制标题
DOI：
10.1016/j.matlet.2014.03.077
复制
发表时间：
2014-06
影响因子：
3
通讯作者：
Jian Li;Xiufeng Liu;Xiaoli Lv;Baoquan Zhang
中科院分区：
文献类型：
--
作者：
Jian Li;Xiufeng Liu;Xiaoli Lv;Baoquan Zhang
采用LB技术在多孔α-Al_2O_3片、玻璃板、玻璃毛细管和铜丝上制备了silicalite-1单分子膜。实验研究表明，对于1.6 μ m大小的silicalite-1晶体，合适的转移表面压力约为50 mN m− 1，而与甲醇、异丙醇和正丁醇相比，仲丁醇在表面活性剂十六烷基三甲基溴化铵的辅助下是合适的分散介质。使用L-B技术可以在具有令人满意的DOC和DCP的平坦和弯曲表面上制造高度定向的silicalite-1单分子层。这种简单可靠的方法对开发新型沸石膜和膜具有重要意义。
Langmuir–Blodgett (L−B) technique was used to fabricate silicalite-1 monolayers on porous α-Al2O3disk, glass plate, glass capillary tube and copper wire. Experimental investigations indicated that the proper transfer surface pressure was about 50 mN m−1for 1.6 μm-sized silicalite-1 crystals, while sec-butanol helped by the surfactant cetyltrimethylammonium bromide is an appropriate dispersion medium compared with methanol, iso-propanol and n-butanol. The highlyb-oriented silicalite-1 monolayer could be manufactured on flat and curved surfaces with satisfactory DOC and DCP using the L−B technique. This simple and reliable method should be of great interest for developing novel zeolite films and membranes.