Abstract
A new member of the family of graphene derivatives, namely, graphene acid with a composition close to C1(COOH)1, was prepared by oxidation of graphene oxide. The synthetic procedure is based on repeated oxidation of graphite with potassium permanganate in an acidic environment. The oxidation process was studied in detail after each step. The multiple oxidations led to oxidative removal of other oxygen functional groups formed in the first oxidation step. Detailed chemical analysis showed only a minor amount of other oxygen-containing functional groups such as hydroxyl and the dominant presence of carboxyl groups in a concentration of about 30 wt %. Further oxidation led to complete decomposition of graphene acid. The obtained material exhibits unique sorption capacity towards metal ions and carbon dioxide. The highly hydrophilic nature of graphene acid allowed the assembly of ultrathin free-standing membranes with high transparency.
| Original language | English |
|---|---|
| Pages (from-to) | 17416-17424 |
| Number of pages | 9 |
| Journal | Chemistry - A European Journal |
| Volume | 22 |
| Issue number | 48 |
| DOIs | |
| Publication status | Published - 2016 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Catalysis
- Chemistry(all)
- Organic Chemistry
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}
A New Member of the Graphene Family : Graphene Acid. / Jankovský, Ondřej; Nováček, Michal; Luxa, Jan; Sedmidubský, David; Fila, Vlastimil; Pumera, Martin; Sofer, Zdeněk.
In: Chemistry - A European Journal, Vol. 22, No. 48, 01.01.2016, p. 17416-17424.Research output: Contribution to journal › Article
TY - JOUR
T1 - A New Member of the Graphene Family
T2 - Graphene Acid
AU - Jankovský, Ondřej
AU - Nováček, Michal
AU - Luxa, Jan
AU - Sedmidubský, David
AU - Fila, Vlastimil
AU - Pumera, Martin
AU - Sofer, Zdeněk
PY - 2016/1/1
Y1 - 2016/1/1
N2 - A new member of the family of graphene derivatives, namely, graphene acid with a composition close to C1(COOH)1, was prepared by oxidation of graphene oxide. The synthetic procedure is based on repeated oxidation of graphite with potassium permanganate in an acidic environment. The oxidation process was studied in detail after each step. The multiple oxidations led to oxidative removal of other oxygen functional groups formed in the first oxidation step. Detailed chemical analysis showed only a minor amount of other oxygen-containing functional groups such as hydroxyl and the dominant presence of carboxyl groups in a concentration of about 30 wt %. Further oxidation led to complete decomposition of graphene acid. The obtained material exhibits unique sorption capacity towards metal ions and carbon dioxide. The highly hydrophilic nature of graphene acid allowed the assembly of ultrathin free-standing membranes with high transparency.
AB - A new member of the family of graphene derivatives, namely, graphene acid with a composition close to C1(COOH)1, was prepared by oxidation of graphene oxide. The synthetic procedure is based on repeated oxidation of graphite with potassium permanganate in an acidic environment. The oxidation process was studied in detail after each step. The multiple oxidations led to oxidative removal of other oxygen functional groups formed in the first oxidation step. Detailed chemical analysis showed only a minor amount of other oxygen-containing functional groups such as hydroxyl and the dominant presence of carboxyl groups in a concentration of about 30 wt %. Further oxidation led to complete decomposition of graphene acid. The obtained material exhibits unique sorption capacity towards metal ions and carbon dioxide. The highly hydrophilic nature of graphene acid allowed the assembly of ultrathin free-standing membranes with high transparency.
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UR - http://www.scopus.com/inward/citedby.url?scp=84991746013&partnerID=8YFLogxK
U2 - 10.1002/chem.201603766
DO - 10.1002/chem.201603766
M3 - Article
AN - SCOPUS:84991746013
VL - 22
SP - 17416
EP - 17424
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
SN - 0947-6539
IS - 48
ER -