Control of gas permeability by transforming the molecular structure of silk fibroin in multilayered nanocoatings for CO2 adsorptive separation

Moonhyun Choi, Jiwoong Heo, Hyunyoung Kim, Sang Wook Kang, Jinkee Hong

Research output: Contribution to journalArticle

Abstract

Carbon dioxide (CO2) is considered one of the causes of global warming because anthropogenic CO2 concentration in the atmosphere has greatly increased. The objective of this work was to design silk fibroin (SF) and graphene oxide (GO) membranes with very high CO2 gas capture characteristics and high gas selectivity toward nitrogen rather than CO2 gas, and to demonstrate the effect on transforming the SF secondary structure at the molecular level. GO-NH3 +/SF multilayer nanocoatings were fabricated by automatic spray-assisted layer-by-layer (LbL) assembly with physical molecular interaction between GO-NH3 + and SF. We demonstrated transformation of the SF secondary structures in GO-NH3 +/SF LbL-assembled nanocoatings with MeOH solvent treatment. After MeOH treatment, the SF secondary structures in the GO-NH3 +/SF LbL-assembled nanocoatings preferred β-sheets to random coils. This phenomenon affects the internal amine groups and CO2 transport. The MeOH-treated GO-NH3 +/SF LbL-assembled nanocoatings have high β-sheet content, and the gas permeability of the nanocoatings was quite different. Before the predominance of the β-sheet, CO2 gas permeated twice as fast as nitrogen (N2) gas in the GO-NH3 +/SF LbL-assembled nanocoatings. On the other hand, CO2 gas was transmitted 10-times slower than N2 gas in MeOH-treated GO-NH3 +/SF LbL-assembled nanocoatings. In other words, we successfully fabricated a CO2 adsorptive separation membrane with GO-NH3 + and SF.

Original languageEnglish
Pages (from-to)554-559
Number of pages6
JournalJournal of Membrane Science
Volume573
DOIs
Publication statusPublished - 2019 Mar 1

Fingerprint

Fibroins
silk
Gas permeability
Silk
Molecular Structure
Molecular structure
Graphite
Permeability
permeability
molecular structure
Gases
Oxides
Graphene
graphene
gases
oxides
Nitrogen
membranes
Membranes
Global Warming

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Cite this

@article{056aa98edec24408b9d591e0e6507fbe,
title = "Control of gas permeability by transforming the molecular structure of silk fibroin in multilayered nanocoatings for CO2 adsorptive separation",
abstract = "Carbon dioxide (CO2) is considered one of the causes of global warming because anthropogenic CO2 concentration in the atmosphere has greatly increased. The objective of this work was to design silk fibroin (SF) and graphene oxide (GO) membranes with very high CO2 gas capture characteristics and high gas selectivity toward nitrogen rather than CO2 gas, and to demonstrate the effect on transforming the SF secondary structure at the molecular level. GO-NH3 +/SF multilayer nanocoatings were fabricated by automatic spray-assisted layer-by-layer (LbL) assembly with physical molecular interaction between GO-NH3 + and SF. We demonstrated transformation of the SF secondary structures in GO-NH3 +/SF LbL-assembled nanocoatings with MeOH solvent treatment. After MeOH treatment, the SF secondary structures in the GO-NH3 +/SF LbL-assembled nanocoatings preferred β-sheets to random coils. This phenomenon affects the internal amine groups and CO2 transport. The MeOH-treated GO-NH3 +/SF LbL-assembled nanocoatings have high β-sheet content, and the gas permeability of the nanocoatings was quite different. Before the predominance of the β-sheet, CO2 gas permeated twice as fast as nitrogen (N2) gas in the GO-NH3 +/SF LbL-assembled nanocoatings. On the other hand, CO2 gas was transmitted 10-times slower than N2 gas in MeOH-treated GO-NH3 +/SF LbL-assembled nanocoatings. In other words, we successfully fabricated a CO2 adsorptive separation membrane with GO-NH3 + and SF.",
author = "Moonhyun Choi and Jiwoong Heo and Hyunyoung Kim and Kang, {Sang Wook} and Jinkee Hong",
year = "2019",
month = "3",
day = "1",
doi = "10.1016/j.memsci.2018.12.011",
language = "English",
volume = "573",
pages = "554--559",
journal = "Journal of Membrane Science",
issn = "0376-7388",
publisher = "Elsevier",

}

Control of gas permeability by transforming the molecular structure of silk fibroin in multilayered nanocoatings for CO2 adsorptive separation. / Choi, Moonhyun; Heo, Jiwoong; Kim, Hyunyoung; Kang, Sang Wook; Hong, Jinkee.

In: Journal of Membrane Science, Vol. 573, 01.03.2019, p. 554-559.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Control of gas permeability by transforming the molecular structure of silk fibroin in multilayered nanocoatings for CO2 adsorptive separation

AU - Choi, Moonhyun

AU - Heo, Jiwoong

AU - Kim, Hyunyoung

AU - Kang, Sang Wook

AU - Hong, Jinkee

PY - 2019/3/1

Y1 - 2019/3/1

N2 - Carbon dioxide (CO2) is considered one of the causes of global warming because anthropogenic CO2 concentration in the atmosphere has greatly increased. The objective of this work was to design silk fibroin (SF) and graphene oxide (GO) membranes with very high CO2 gas capture characteristics and high gas selectivity toward nitrogen rather than CO2 gas, and to demonstrate the effect on transforming the SF secondary structure at the molecular level. GO-NH3 +/SF multilayer nanocoatings were fabricated by automatic spray-assisted layer-by-layer (LbL) assembly with physical molecular interaction between GO-NH3 + and SF. We demonstrated transformation of the SF secondary structures in GO-NH3 +/SF LbL-assembled nanocoatings with MeOH solvent treatment. After MeOH treatment, the SF secondary structures in the GO-NH3 +/SF LbL-assembled nanocoatings preferred β-sheets to random coils. This phenomenon affects the internal amine groups and CO2 transport. The MeOH-treated GO-NH3 +/SF LbL-assembled nanocoatings have high β-sheet content, and the gas permeability of the nanocoatings was quite different. Before the predominance of the β-sheet, CO2 gas permeated twice as fast as nitrogen (N2) gas in the GO-NH3 +/SF LbL-assembled nanocoatings. On the other hand, CO2 gas was transmitted 10-times slower than N2 gas in MeOH-treated GO-NH3 +/SF LbL-assembled nanocoatings. In other words, we successfully fabricated a CO2 adsorptive separation membrane with GO-NH3 + and SF.

AB - Carbon dioxide (CO2) is considered one of the causes of global warming because anthropogenic CO2 concentration in the atmosphere has greatly increased. The objective of this work was to design silk fibroin (SF) and graphene oxide (GO) membranes with very high CO2 gas capture characteristics and high gas selectivity toward nitrogen rather than CO2 gas, and to demonstrate the effect on transforming the SF secondary structure at the molecular level. GO-NH3 +/SF multilayer nanocoatings were fabricated by automatic spray-assisted layer-by-layer (LbL) assembly with physical molecular interaction between GO-NH3 + and SF. We demonstrated transformation of the SF secondary structures in GO-NH3 +/SF LbL-assembled nanocoatings with MeOH solvent treatment. After MeOH treatment, the SF secondary structures in the GO-NH3 +/SF LbL-assembled nanocoatings preferred β-sheets to random coils. This phenomenon affects the internal amine groups and CO2 transport. The MeOH-treated GO-NH3 +/SF LbL-assembled nanocoatings have high β-sheet content, and the gas permeability of the nanocoatings was quite different. Before the predominance of the β-sheet, CO2 gas permeated twice as fast as nitrogen (N2) gas in the GO-NH3 +/SF LbL-assembled nanocoatings. On the other hand, CO2 gas was transmitted 10-times slower than N2 gas in MeOH-treated GO-NH3 +/SF LbL-assembled nanocoatings. In other words, we successfully fabricated a CO2 adsorptive separation membrane with GO-NH3 + and SF.

UR - http://www.scopus.com/inward/record.url?scp=85058661985&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85058661985&partnerID=8YFLogxK

U2 - 10.1016/j.memsci.2018.12.011

DO - 10.1016/j.memsci.2018.12.011

M3 - Article

VL - 573

SP - 554

EP - 559

JO - Journal of Membrane Science

JF - Journal of Membrane Science

SN - 0376-7388

ER -