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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.7b00331
|2 doi
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|a pubmed25n0907.xml
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Xiao, Pei-Wen
|e verfasserin
|4 aut
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|a Synthesis of Core-Shell Structured Porous Nitrogen-Doped CarbonSilica Material via a Sol-Gel Method
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 16.07.2018
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|a Date Revised 16.07.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Core-shell structured nitrogen-doped porous carbonsilica material with uniform structure and morphology was synthesized via a sol-gel method. During this process, a commercial triblock copolymer and the in situ formed pyrrole-formaldehyde polymer acted as cotemplates, while tetraethyl orthosilicate acted as silica precursor. The synergetic effect of the triblock copolymer and the pyrrole-formaldehyde polymer enables the formation of the core-shell structure. Herein, the pyrrole-formaldehyde polymer acted as not only the template, but also the nitrogen-doped carbon precursor of the core. The obtained core-shell structured porous material possesses moderate Brunauer-Emmett-Teller specific surface area (410 m2 g-1) and pore volume (0.53 cm3 g-1). Moreover, corresponding hollow silica spheres or nitrogen-doped porous carbon spheres can be synthesized by calcining the core-shell structured material in air or etching it with HF. The X-ray photoelectron spectroscopy results reveal that the nitrogen states of the obtained material are mainly pyridinic-N and pyridonic-N/pyrrolic-N, which are beneficial for carbon dioxide adsorption. The carbon dioxide uptake capacity of the nitrogen-doped carbon spheres can reach 12.3 wt % at 273 K and 1.0 bar, meanwhile, the material shows good gas adsorption selectivities for CO2/CH4 and CO2/N2
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Zhao, Li
|e verfasserin
|4 aut
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|a Sui, Zhu-Yin
|e verfasserin
|4 aut
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|a Han, Bao-Hang
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 33(2017), 24 vom: 20. Juni, Seite 6038-6045
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:33
|g year:2017
|g number:24
|g day:20
|g month:06
|g pages:6038-6045
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|u http://dx.doi.org/10.1021/acs.langmuir.7b00331
|3 Volltext
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