High benzene selectivity of mesoporous silicate for BTX gas sensing microfluidic devices |
| |
Authors: | Email author" target="_blank">Yuko?UenoEmail author Akiyuki?Tate Osamu?Niwa Hao-Shen?Zhou Takeo?Yamada Itaru?Honma |
| |
Institution: | (1) NTT Microsystem Integration Laboratories, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan;(2) National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan |
| |
Abstract: | The gas selectivities of highly ordered mesoporous silicates and commercially-obtained porous silicates with respect to benzene, toluene and xylene were studied. After studying the porosities, pore uniformities, and surface silanol structures of the silicates and their relationships to gas selectivity in detail, we found that we could achieve high benzene selectivity by controlling the micropore size (less than 1 nm). Concluding that mesoporous silicate has a suitable micropore size and structure for benzene selectivity, we also observed that mesoporous silicate SBA-16 exhibited a high (>6) benzene selectivity from toluene and xylene even in a pseudo-atmospheric environment. A benzene detection limit of about 100 ppb was achieved by introducing SBA-16 into a microfluidic device originally developed for the separate detection of benzene, toluene, and xylene gases. |
| |
Keywords: | Mesoporous silicate Molecular selectivity Micropore Microfluidic device BTX gas |
本文献已被 PubMed SpringerLink 等数据库收录! |
|