Particulate matter capturing via naturally dried ZIF-8/graphene aerogels under harsh conditions
Particulate matter (PM) pollution poses a serious threat to the environment and public health. Capture of PM is best performed at the emission source, such as car exhaust exit points, although it is a challenge for filters to work under harsh conditions of high temperatures and flow rate. Here we de...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/85710 http://hdl.handle.net/10220/49809 |
| _version_ | 1826121577288171520 |
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| author | Mao, Jiajun Tang, Yuxin Wang, Yandong Huang, Jianying Dong, Xiuli Chen, Zhong Lai, Yuekun |
| author_facet | Mao, Jiajun Tang, Yuxin Wang, Yandong Huang, Jianying Dong, Xiuli Chen, Zhong Lai, Yuekun |
| author_sort | Mao, Jiajun |
| collection | NTU |
| description | Particulate matter (PM) pollution poses a serious threat to the environment and public health. Capture of PM is best performed at the emission source, such as car exhaust exit points, although it is a challenge for filters to work under harsh conditions of high temperatures and flow rate. Here we designed a thermally stable PM filter by in situ anchoring of zeolite imidazole framework-8 (ZIF-8) on a three-dimensional (3D) network of reduced graphene oxide aerogel (rGA) through natural drying. Owing to high specific surface area, well-connected porous network of graphene aerogel, and large number of metal sites from ZIF-8/rGA, the capture efficiencies for PM2.5 and PM10 are over 99.3% and 99.6%, respectively, at ambient conditions, and the efficiencies remain high in harsh conditions (PM2.5 and PM10: >98.8% and >99.1%, respectively, at 200°C at a flow velocity of 30 L/min). The filter can be regenerated by a simple washing process. |
| first_indexed | 2024-10-01T05:34:29Z |
| format | Journal Article |
| id | ntu-10356/85710 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:34:29Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/857102023-07-14T15:51:18Z Particulate matter capturing via naturally dried ZIF-8/graphene aerogels under harsh conditions Mao, Jiajun Tang, Yuxin Wang, Yandong Huang, Jianying Dong, Xiuli Chen, Zhong Lai, Yuekun Graphene Engineering::Materials ZIF-8 Particulate matter (PM) pollution poses a serious threat to the environment and public health. Capture of PM is best performed at the emission source, such as car exhaust exit points, although it is a challenge for filters to work under harsh conditions of high temperatures and flow rate. Here we designed a thermally stable PM filter by in situ anchoring of zeolite imidazole framework-8 (ZIF-8) on a three-dimensional (3D) network of reduced graphene oxide aerogel (rGA) through natural drying. Owing to high specific surface area, well-connected porous network of graphene aerogel, and large number of metal sites from ZIF-8/rGA, the capture efficiencies for PM2.5 and PM10 are over 99.3% and 99.6%, respectively, at ambient conditions, and the efficiencies remain high in harsh conditions (PM2.5 and PM10: >98.8% and >99.1%, respectively, at 200°C at a flow velocity of 30 L/min). The filter can be regenerated by a simple washing process. Published version 2019-08-29T02:46:53Z 2019-12-06T16:08:49Z 2019-08-29T02:46:53Z 2019-12-06T16:08:49Z 2019 Journal Article Mao, J., Tang, Y., Wang, Y., Huang, J., Dong, X., Chen, Z., & Lai, Y. (2019). Particulate matter capturing via naturally dried ZIF-8/graphene aerogels under harsh conditions. iScience, 16, 133-144. doi:10.1016/j.isci.2019.05.024 https://hdl.handle.net/10356/85710 http://hdl.handle.net/10220/49809 10.1016/j.isci.2019.05.024 en iScience © 2019 The Author(s). This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). 24 p. application/pdf |
| spellingShingle | Graphene Engineering::Materials ZIF-8 Mao, Jiajun Tang, Yuxin Wang, Yandong Huang, Jianying Dong, Xiuli Chen, Zhong Lai, Yuekun Particulate matter capturing via naturally dried ZIF-8/graphene aerogels under harsh conditions |
| title | Particulate matter capturing via naturally dried ZIF-8/graphene aerogels under harsh conditions |
| title_full | Particulate matter capturing via naturally dried ZIF-8/graphene aerogels under harsh conditions |
| title_fullStr | Particulate matter capturing via naturally dried ZIF-8/graphene aerogels under harsh conditions |
| title_full_unstemmed | Particulate matter capturing via naturally dried ZIF-8/graphene aerogels under harsh conditions |
| title_short | Particulate matter capturing via naturally dried ZIF-8/graphene aerogels under harsh conditions |
| title_sort | particulate matter capturing via naturally dried zif 8 graphene aerogels under harsh conditions |
| topic | Graphene Engineering::Materials ZIF-8 |
| url | https://hdl.handle.net/10356/85710 http://hdl.handle.net/10220/49809 |
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