PMID- 29620092
OWN - NLM
STAT- MEDLINE
DCOM- 20190114
LR  - 20190114
IS  - 2040-3372 (Electronic)
IS  - 2040-3364 (Linking)
VI  - 10
IP  - 15
DP  - 2018 Apr 19
TI  - Hierarchically porous, ultra-strong reduced graphene oxide-cellulose nanocrystal 
      sponges for exceptional adsorption of water contaminants.
PG  - 7171-7184
LID - 10.1039/c7nr09037d [doi]
AB  - Self-assembly of graphene oxide (GO) nanosheets into porous 3D sponges is a 
      promising approach to exploit their capacity to adsorb contaminants while 
      facilitating the recovery of the nanosheets from treated water. Yet, forming 
      mechanically robust sponges with suitable adsorption properties presents a 
      significant challenge. Ultra-strong and highly porous 3D sponges are formed using 
      GO, vitamin C (VC), and cellulose nanocrystals (CNCs) - natural nanorods isolated 
      from wood pulp. CNCs provide a robust scaffold for the partially reduced GO (rGO) 
      nanosheets resulting in an exceptionally stiff nanohybrid. The concentration of 
      VC as a reducing agent plays a critical role in tailoring the pore architecture 
      of the sponges. By using excess amounts of VC, a unique hierarchical pore 
      structure is achieved, where VC grains act as soft templates for forming 
      millimeter-sized pores, the walls of which are also porous and comprised of 
      micron-sized pores. The unique hierarchical pore structure ensures the 
      interconnectivity of pores even at the core of large sponges as evidenced by 
      micro and nano X-ray computed tomography. The unique pore architecture translates 
      into an exceptional specific surface area for adsorption of a wide range of 
      contaminants, such as dyes, heavy metals, pharmaceuticals and cyanotoxin from 
      water.
FAU - Yousefi, Nariman
AU  - Yousefi N
AD  - Department of Chemical Engineering, McGill University, Montreal, QC, Canada. 
      nathalie.tufenkji@mcgill.ca.
FAU - Wong, Kerwin K W
AU  - Wong KKW
FAU - Hosseinidoust, Zeinab
AU  - Hosseinidoust Z
FAU - Sorensen, Henning Osholm
AU  - Sorensen HO
FAU - Bruns, Stefan
AU  - Bruns S
FAU - Zheng, Yi
AU  - Zheng Y
FAU - Tufenkji, Nathalie
AU  - Tufenkji N
LA  - eng
PT  - Journal Article
PL  - England
TA  - Nanoscale
JT  - Nanoscale
JID - 101525249
RN  - 0 (Oxides)
RN  - 0 (graphene oxide)
RN  - 059QF0KO0R (Water)
RN  - 7782-42-5 (Graphite)
RN  - 9004-34-6 (Cellulose)
SB  - IM
MH  - Adsorption
MH  - *Cellulose
MH  - *Graphite
MH  - *Nanoparticles
MH  - Oxides
MH  - Water
MH  - *Water Purification
EDAT- 2018/04/06 06:00
MHDA- 2019/01/15 06:00
CRDT- 2018/04/06 06:00
PHST- 2018/04/06 06:00 [pubmed]
PHST- 2019/01/15 06:00 [medline]
PHST- 2018/04/06 06:00 [entrez]
AID - 10.1039/c7nr09037d [doi]
PST - ppublish
SO  - Nanoscale. 2018 Apr 19;10(15):7171-7184. doi: 10.1039/c7nr09037d.