Solution-phase synthesis of ordered mesoporous carbon as resonant-gravimetric sensing material for room-temperature H_2S detection |
| |
| Institution: | 1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Institute of Functional Materials, Donghua University, Shanghai 201620, China;2. State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;3. College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China;4. University of Chinese Academy of Sciences, Beijing 100049, China;1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;2. Indian Institute of Technology Guwahati, Guwahati 781039, India;1. Chemistry Department, Moscow State University, Moscow 119991, Russia;2. Institute of Inorganic Chemistry, University of Cologne, D-50939 Cologne, Germany;3. LISM, Moscow State Technological University Stankin, 127055 Moscow, Russia;4. EMAT, University of Antwerp, B-2020 Antwerp, Belgium;5. Skolkovo Institute of Science and Technology, 143026 Moscow, Russia;1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Institute of Functional Materials, Shanghai 201620, China;2. Indian Institute of Technology Guwahati, Guwahati 781039, India;1. College of Materials Science and Engineering, University of Shanghai for Science & Technology, Shanghai 200093, China;2. School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China |
| |
| Abstract: | H2S can cause multiple diseases and poses a great threat to human health. However, the precise detection of extremely toxic H2S at room temperature is still a great challenge. Here, a facile solvent evaporation induced aggregating assembly (EIAA) method has been applied for the production of ordered mesoporous carbon (OMCs) in an acidic THF/H2O solution with high-molecular-weight poly(ethylene oxide)-b-polystyrene (PEO-b-PS) copolymers as the structure-directing agent, formaldehyde and resorcinol as carbon precursors. Along with the continuous evaporation of THF from the mixed solution, cylindrical micelles are formed in the solution and further assemble into highly ordered mesostructure. The obtained OMCs possesses a two-dimensional (2D) hexagonal mesostructure with uniform and large pore diameter (～19.2 nm), high surface area (599 m2/g), and large pore volume (0.92 cm3/g). When being used as the resonant cantilever gas sensor for room-temperature H2S detection, the OMCs has delivered not only a superior gas sensing performance with ultrafast response (14 s) and recovery (21 s) even at low concentration (2 ppm) but also an excellent selectivity toward H2S among various common interfering gases. Moreover, the limit of detection is better than 0.2 ppm, indicating its potential application in environmental monitoring and health protection. |
| |
| Keywords: | Mesoporous materials Carbon Self-assembly Resonant cantilever gas sensor |
| 本文献已被 CNKI ScienceDirect 等数据库收录！ |
|
