| Title: | Investigation of MOF-derived humidity-proof hierarchical porous carbon frameworks as highly-selective toluene absorbents and sensing materials |
| Author(s): | Li Z; Yuan Y; Wu H; Li X; Yuan M; Wang H; Wu X; Liu S; Zheng X; Kim M; Zheng H; Rehman S; Jiang G; Fu W; Jiang J; |
| Address: | "State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China. Division of Advanced Manufacturing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China. Beijing Engineering Research Center of Process Pollution Control, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100049, PR China. Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China. Electronic address: Jiangjk@tsinghua.edu.cn" |
| DOI: | 10.1016/j.jhazmat.2020.125034 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Carbon frameworks (CFs) derived from metal-organic frameworks (MOFs) have been produced as adsorbents of toluene. To further obtain optimum hierarchical porous carbon structure of CFs, different treatment temperatures were applied to a typical kind of MOFs (ZIF-8). The adsorption capacity of the toluene of hierarchical porous CFs obtained from ZIF-8 under 1100 degrees C (CF-1100, adsorption capacity of 208.5 mg/g) was higher than that of other carbonization temperature and MOFs. Impressively, the adsorbent CF-1100 also exhibited strong hydrophobicity, low desorption temperature, and good selectivity to toluene. The adsorption capacity decreased by only 10.4% under wet condition compared with the dry condition, standing on the top of the recently reported adsorbents. The impressive adsorption performance of CF-1100 is attributed to the larger specific surface area (1024 m(2)/g) and pore volume (0.497 cm(3)/g), newly generated micropores (pore width is 0.6-0.8 nm) and mesopores (pore width above 10 nm), and carbonaceous structure with higher degree of graphitization. Based on the adequate adsorption performance, CF-1100 coated quartz crystal microbalances as sensor also showed a high sensitivity of 0.4004 Hz/ppm and small relative standard deviations of 1.0745% for toluene sensing. This contribution provides a foundation for optimizing potential adsorbents and sensing materials for air pollution abatement" |
| Keywords: | Hierarchical porous carbon Metal-organic frameworks Quartz crystal microbalance Volatile organic compounds Zif-8; |
| Notes: | "PubMed-not-MEDLINELi, Zehui Yuan, Yi Wu, Hao Li, Xinghui Yuan, Menglei Wang, Huaizhang Wu, Xiaoxue Liu, Shuai Zheng, Xianming Kim, Mingjun Zheng, Haoyun Rehman, Sadia Jiang, Guangya Fu, Wangyang Jiang, Jingkun eng Netherlands 2021/04/17 J Hazard Mater. 2021 Jun 5; 411:125034. doi: 10.1016/j.jhazmat.2020.125034. Epub 2021 Jan 13" |
