期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 59, 期 42, 页码 18835-18843出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.9b06744
关键词
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资金
- National Natural Science Foundation of China [51574044, 51506012, 51576095]
- Key Research and Development Program of Jiangsu Province (Industry Foresight and Common Key Technology) [BE2018065]
Four different kinds of metal-organic framework (MOF) materials Zn-BTC, Cu-BTC, Cr-BTC, and Fe-BTC are incorporated into alginate, forming various hydrogels for n-hexane vapor adsorption. The cross-link networks between center cations of MOFs and alginate are verified by comparing the Fourier transform infrared characteristic peaks of the MOF/alginates with that of bare alginate. Interestingly, the MOF/alginate composites cross-linked by trivalent cations (Cr3+ and Fe3+) contain micropores while those cross-linked by divalent cations (Zn2+ and Cu2+) do not. The specific surface parameters of the as-prepared hydrogels are affected by the concentration of the alginate. In addition, the Fe-BTC/alginate performs the best n-hexane vapor adsorption capacity among the four kinds of composites. This study would be helpful for a better understanding of the effect of ionic cross-linking on the alginate hydrogel surface area parameters and provide basic knowledge and reference for expanding the applications of the MOF/alginate hydrogels.
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