Polymer/Ordered Mesoporous Carbon Nanocomposite Platelets as Superior Sensing Materials for Gas Detection with Surface Acoustic Wave Devices

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• 作者：Pei-Hsin Ku ; Chen-Yun Hsiao ; Mei-Jing Chen ; Tai-Hsuan Lin ; Yi-Tian Li ; Szu-Chieh Liu ; Kea-Tiong Tang ; Da-Jeng Yao ; Chia-Min Yang
• 刊名：Langmuir
• 出版年：2012
• 出版时间：August 7, 2012
• 年：2012
• 卷：28
• 期：31
• 页码：11639-11645
• 全文大小：375K
• 年卷期：v.28,no.31(August 7, 2012)
• ISSN：1520-5827

文摘

We have prepared nanocomposites of polymers and platelet CMK-5-like carbon and have demonstrated their superior performance for gravimetric gas detection. The zirconium-containing platelet SBA-15 was used as hard template to prepare CMK-5-like carbon, which was then applied as a lightweight and high-surface-area scaffold for the growth of polymers by radical polymerization. Mesoporous nanocomposites composed of four different polymers were used as sensing materials for surface acoustic wave devices to detect ppm-level ammonia gas. The sensors showed much better sensitivity and reversibility than those coated with dense polymer films, and the sensor array could still generate a characteristic pattern for the analyte with a concentration of 16 ppm. The results show that the nanocomposite sensing materials are promising for highly sensitive gravimetric-type electronic nose applications.