PMID- 28989597
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220314
IS  - 2041-6520 (Print)
IS  - 2041-6539 (Electronic)
IS  - 2041-6520 (Linking)
VI  - 8
IP  - 7
DP  - 2017 Jul 1
TI  - Graphene oxide-carbon nanotube hybrid assemblies: cooperatively strengthened 
      OH...O[double bond, length as m-dash]C hydrogen bonds and the removal of 
      chemisorbed water.
PG  - 4987-4995
LID - 10.1039/c7sc00223h [doi]
AB  - Owing to their great significance for energy storage and sensing applications, 
      multi-layer papers consisting of graphene oxide-carbon nanotube (GO-CNT) hybrid 
      sheets were prepared by in situ exfoliation of graphite oxide in the presence of 
      oxidized CNTs (oCNTs). For the first time we elucidate the influence of oCNTs on 
      chemisorbed water (CW), i.e. the water molecules inherently bound to the oxygen 
      functional groups (OFGs) of graphene oxide (GO) and responsible for irreversible 
      structural damage upon thermal reduction processes. We show that oCNTs 
      self-assemble onto GO sheets during the liquid phase processing steps by forming 
      cooperatively strengthened OH...O[double bond, length as m-dash]C hydrogen bonds 
      between the carboxylic groups of the oCNTs and OFGs of GO. At oCNT amounts of 
      about 10 to 15 wt% this leads to the displacement of considerable amounts of CW 
      without altering the original chemical composition of GO. The thermally reduced 
      GO-CNT (rGO-CNT) papers reveal improved sp(2) character and an enhancement of the 
      specific capacitance by 75% with respect to thermally reduced GO (rGO), largely 
      due to the effective removal of CW by oxidized CNTs. These findings disclose the 
      relevance of the cooperative hydrogen bonding phenomena in graphene oxide 
      paper/film electrodes for the development of improved electrochemical energy 
      storage and sensing devices.
CI  - This journal is (c) The Royal Society of Chemistry 2017.
FAU - Nunez, J D
AU  - Nunez JD
AD  - Instituto de Carboquimica (ICB-CSIC) , E-50018 Zaragoza , Spain . Email: 
      wmaser@icb.csic.es ; Tel: +34 976 73 39 77.
FAU - Benito, A M
AU  - Benito AM
AD  - Instituto de Carboquimica (ICB-CSIC) , E-50018 Zaragoza , Spain . Email: 
      wmaser@icb.csic.es ; Tel: +34 976 73 39 77.
FAU - Rouziere, S
AU  - Rouziere S
AD  - Laboratoire de Physique des Solides , CNRS , Univ. Paris-Sud , Univ. Paris Saclay 
      , F-91405 Orsay Cedex , France.
FAU - Launois, P
AU  - Launois P
AD  - Laboratoire de Physique des Solides , CNRS , Univ. Paris-Sud , Univ. Paris Saclay 
      , F-91405 Orsay Cedex , France.
FAU - Arenal, R
AU  - Arenal R
AD  - Laboratorio de Microscopias Avanzadas , Instituto de Nanociencias de Aragon , 
      Univ. Zaragoza , E-50018 Zaragoza , Spain.
AD  - ARAID Foundation , E-50018 Zaragoza , Spain.
FAU - Ajayan, P M
AU  - Ajayan PM
AD  - Department of Materials Science and NanoEngineering , Rice University , Houston , 
      Texas 77005 , USA.
FAU - Maser, W K
AU  - Maser WK
AUID- ORCID: 0000-0003-4253-0758
AD  - Instituto de Carboquimica (ICB-CSIC) , E-50018 Zaragoza , Spain . Email: 
      wmaser@icb.csic.es ; Tel: +34 976 73 39 77.
LA  - eng
PT  - Journal Article
DEP - 20170504
PL  - England
TA  - Chem Sci
JT  - Chemical science
JID - 101545951
PMC - PMC5625303
EDAT- 2017/10/11 06:00
MHDA- 2017/10/11 06:01
PMCR- 2017/05/04
CRDT- 2017/10/10 06:00
PHST- 2017/01/16 00:00 [received]
PHST- 2017/05/01 00:00 [accepted]
PHST- 2017/10/11 06:00 [pubmed]
PHST- 2017/10/11 06:01 [medline]
PHST- 2017/10/10 06:00 [entrez]
PHST- 2017/05/04 00:00 [pmc-release]
AID - c7sc00223h [pii]
AID - 10.1039/c7sc00223h [doi]
PST - ppublish
SO  - Chem Sci. 2017 Jul 1;8(7):4987-4995. doi: 10.1039/c7sc00223h. Epub 2017 May 4.