In situ synthesis of zeolitic imidazolate frameworks/carbon nanotube composites with enhanced CO2 adsorption
Article
Article Title | In situ synthesis of zeolitic imidazolate frameworks/carbon nanotube composites with enhanced CO2 adsorption |
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ERA Journal ID | 1539 |
Article Category | Article |
Authors | Yang, Ying (Author), Ge, Lei (Author), Rudolph, Victor (Author) and Zhu, Zhonghua (Author) |
Journal Title | Dalton Transactions: an international journal of inorganic chemistry |
Journal Citation | 43 (19), pp. 7028-7036 |
Number of Pages | 9 |
Year | 2014 |
Place of Publication | United Kingdom |
ISSN | 1477-9226 |
1477-9234 | |
Digital Object Identifier (DOI) | https://doi.org/10.1039/c3dt53191k |
Web Address (URL) | http://pubs.rsc.org/en/Content/ArticleLanding/2014/DT/c3dt53191k#!divAbstract |
Abstract | A series of ZIF-8 and hydroxyl-functionalized carbon nanotube (CNT) composites were successfully synthesized by the solvothermal method. The obtained ZIF-8/CNT composites were characterized by XRD, SEM, TGA and N2 adsorption at 77 K. The contents of ZIF-8 and CNTs in the composites were calculated from thermal analysis data. CO2 and N2 adsorption at 273 K on the composites was also investigated and compared. The ZIF-8 particles in the composites exhibit similar crystal structures and morphology to those of pure ZIF-8, but display enhanced thermal stability. The surface areas and pore volumes of the ZIF-8/CNT composites are higher than the values calculated for hypothetical physical mixtures, and the synergetic effect between ZIF-8 and CNTs can be proposed. This phenomenon demonstrates that the incorporation of CNTs into ZIF-8 can facilitate the nucleation and crystallization of ZIF-8. As a result, the composites with an optimal CNT content (3.63 wt%) show improved CO2 adsorption capacity and higher relative selectivity for CO2/N2 compared with pure ZIF-8. |
Keywords | carbon nanotube composites; adsorption; thermal analysis; crystal structures; crystal morphology; thermal stability |
ANZSRC Field of Research 2020 | 400401. Carbon capture engineering (excl. sequestration) |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3z43/in-situ-synthesis-of-zeolitic-imidazolate-frameworks-carbon-nanotube-composites-with-enhanced-co2-adsorption
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