PMID- 32106674
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200319
IS  - 1948-7185 (Electronic)
IS  - 1948-7185 (Linking)
VI  - 11
IP  - 6
DP  - 2020 Mar 19
TI  - Origin of CO(2)-philic Sorption by Graphene Oxide Layered Nanosheets and Their 
      Derivatives.
PG  - 2356-2362
LID - 10.1021/acs.jpclett.0c00204 [doi]
AB  - Graphene oxide (GO) is a promising 2D material for adsorbents and membranes, in 
      particular, for the CO(2) separation process. However, CO(2) diffusion and 
      sorption in GO and its layered structures are still not well understood because 
      of its heterogeneous structure. Here we report CO(2) sorption in GO and its 
      derivatives (e.g., reduced GO (rGO)) in powders and films. These CO(2) sorption 
      behaviors reveal that GO is highly CO(2)-philic via complex 
      CO(2)-functional-group-surface interactions, as compared with graphite and rGOs. 
      Even in highly interlocked, lamellar GO films, CO(2) molecules above a certain 
      threshold pressure can diffuse into GO interlayers, causing GO films to swell and 
      leading to dramatic increases in CO(2) sorption. Intercalated water in GO 
      interlayers can be removed by preferential CO(2) sorption without any changes in 
      the GO chemical structure. This finding helps to explain the origin of CO(2) 
      affinity with GO and has implications for preparing anhydrous GO assemblies for 
      various applications.
FAU - Yoon, Hee Wook
AU  - Yoon HW
AD  - Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of 
      Korea.
AD  - McKetta Department of Chemical Engineering, University of Texas at Austin, 200 
      East Dean Keeton Street Stop C0400, Austin, Texas 78712, United States.
FAU - Lee, Tae Hoon
AU  - Lee TH
AD  - Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of 
      Korea.
FAU - Doherty, Cara M
AU  - Doherty CM
AD  - CSIRO Manufacturing, Bag 10, Clayton South, Victoria 3169, Australia.
FAU - Choi, Tae Hwan
AU  - Choi TH
AD  - Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of 
      Korea.
FAU - Roh, Ji Soo
AU  - Roh JS
AD  - Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of 
      Korea.
FAU - Kim, Hyo Won
AU  - Kim HW
AUID- ORCID: 0000-0001-7385-796X
AD  - Department of Advanced Materials Engineering, Kangwon National University, 
      Samcheock 25931, Republic of Korea.
FAU - Cho, Young Hoon
AU  - Cho YH
AUID- ORCID: 0000-0002-8863-1979
AD  - Advanced Green Chemical Materials Division, Research Center for Membrane, Korea 
      Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea.
FAU - Do, Si-Hyun
AU  - Do SH
AD  - Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of 
      Korea.
FAU - Freeman, Benny D
AU  - Freeman BD
AUID- ORCID: 0000-0003-2779-7788
AD  - McKetta Department of Chemical Engineering, University of Texas at Austin, 200 
      East Dean Keeton Street Stop C0400, Austin, Texas 78712, United States.
FAU - Park, Ho Bum
AU  - Park HB
AUID- ORCID: 0000-0002-8003-9698
AD  - Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of 
      Korea.
LA  - eng
PT  - Journal Article
DEP - 20200310
PL  - United States
TA  - J Phys Chem Lett
JT  - The journal of physical chemistry letters
JID - 101526034
SB  - IM
EDAT- 2020/02/29 06:00
MHDA- 2020/02/29 06:01
CRDT- 2020/02/29 06:00
PHST- 2020/02/29 06:00 [pubmed]
PHST- 2020/02/29 06:01 [medline]
PHST- 2020/02/29 06:00 [entrez]
AID - 10.1021/acs.jpclett.0c00204 [doi]
PST - ppublish
SO  - J Phys Chem Lett. 2020 Mar 19;11(6):2356-2362. doi: 10.1021/acs.jpclett.0c00204. 
      Epub 2020 Mar 10.