Abstract
An efficient nanocomposite electrocatalyst composed of mesoporous silica (SBA-15) with polyaniline (PANI) nanostructures within its channel pores (PANI/SBA-15) is synthesized and characterized. The resulting PANI/SBA-15 is capable of chelating Co(II) ions, presumably via its nitrogen atoms on PANI/diamine groups. Both the metal-free (SBA-15/PANI) and the Co(II)-doped SBA-15/PANI nanocomposite materials showed high electrocatalytic activity for oxidation of L-ascorbic acid, with very low overpotential and high current density. The activity of PANI/SBA-15 toward oxidation of L-ascorbic acid is comparable to that obtained from a conventional Pt/C electrocatalyst.
| Original language | English |
|---|---|
| Pages (from-to) | 1878-1883 |
| Number of pages | 6 |
| Journal | Advanced Materials |
| Volume | 24 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - Apr 10 2012 |
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Keywords
- Co(II)-polyaniline
- eletrocatalyst
- L-ascorbic acid
- mesoporous silica
- oxidation
- polyaniline
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
Cite this
Noble metal-free oxidative electrocatalysts : Polyaniline and Co(II)-polyaniline nanostructures hosted in nanoporous silica. / Silva, Rafael; Asefa, Teddy.
In: Advanced Materials, Vol. 24, No. 14, 10.04.2012, p. 1878-1883.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Noble metal-free oxidative electrocatalysts
T2 - Polyaniline and Co(II)-polyaniline nanostructures hosted in nanoporous silica
AU - Silva, Rafael
AU - Asefa, Teddy
PY - 2012/4/10
Y1 - 2012/4/10
N2 - An efficient nanocomposite electrocatalyst composed of mesoporous silica (SBA-15) with polyaniline (PANI) nanostructures within its channel pores (PANI/SBA-15) is synthesized and characterized. The resulting PANI/SBA-15 is capable of chelating Co(II) ions, presumably via its nitrogen atoms on PANI/diamine groups. Both the metal-free (SBA-15/PANI) and the Co(II)-doped SBA-15/PANI nanocomposite materials showed high electrocatalytic activity for oxidation of L-ascorbic acid, with very low overpotential and high current density. The activity of PANI/SBA-15 toward oxidation of L-ascorbic acid is comparable to that obtained from a conventional Pt/C electrocatalyst.
AB - An efficient nanocomposite electrocatalyst composed of mesoporous silica (SBA-15) with polyaniline (PANI) nanostructures within its channel pores (PANI/SBA-15) is synthesized and characterized. The resulting PANI/SBA-15 is capable of chelating Co(II) ions, presumably via its nitrogen atoms on PANI/diamine groups. Both the metal-free (SBA-15/PANI) and the Co(II)-doped SBA-15/PANI nanocomposite materials showed high electrocatalytic activity for oxidation of L-ascorbic acid, with very low overpotential and high current density. The activity of PANI/SBA-15 toward oxidation of L-ascorbic acid is comparable to that obtained from a conventional Pt/C electrocatalyst.
KW - Co(II)-polyaniline
KW - eletrocatalyst
KW - L-ascorbic acid
KW - mesoporous silica
KW - oxidation
KW - polyaniline
UR - http://www.scopus.com/inward/record.url?scp=84859613200&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859613200&partnerID=8YFLogxK
U2 - 10.1002/adma.201104126
DO - 10.1002/adma.201104126
M3 - Article
C2 - 22411760
AN - SCOPUS:84859613200
VL - 24
SP - 1878
EP - 1883
JO - Advanced Materials
JF - Advanced Materials
SN - 0935-9648
IS - 14
ER -