Cobalt-doped carbon xerogel with different initial pH values toward oxygen reduction

Azim Fitri, Kee Shyuan Loh, Ifa Puspasari, Abu Bakar Mohamad

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this study, cobalt-doped carbon xerogel (Co-CX) was synthesized via sol-gel polymerization resorcinol-formaldehyde, catalyzed with cobalt nitrate, followed by drying and carbonization process under nitrogen gas flow. The effect of initial pH value (5.5, 6.5 and 7.5) and the type of carbon precursors on the morphology of Co-CX have been investigated with Field Emission-Transmission Electron Microscopy (FESEM). The catalytic activity of Co-CX for the oxygen reduction reaction (ORR) in 0.1 M KOH has been studied by using a rotating ring-disk electrode (RRDE) technique. FESEM revealed that Co doping promotes the formation of more pores. While the conditions allow obtaining xerogel with higher porosity at pH 7.5. The RRDE result display that Co-CX exhibited good catalytic activity tends to favor two electrons pathway.

Original languageEnglish
Title of host publicationAdvanced Materials for Sustainability and Growth
Subtitle of host publicationProceedings of the 3rd Advanced Materials Conference 2016, 3rd AMC 2016
PublisherAmerican Institute of Physics Inc.
Volume1901
ISBN (Electronic)9780735415898
DOIs
Publication statusPublished - 4 Dec 2017
Event3rd Advanced Materials Conference 2016, AMC 2016 - Langkawi Island, Kedah, Malaysia
Duration: 28 Nov 201629 Nov 2016

Other

Other3rd Advanced Materials Conference 2016, AMC 2016
CountryMalaysia
CityLangkawi Island, Kedah
Period28/11/1629/11/16

Fingerprint

xerogels
cobalt
carbon
oxygen
catalytic activity
field emission
porosity
transmission electron microscopy
electrodes
carbonization
rings
formaldehyde
drying
gas flow
nitrates
polymerization
gels
nitrogen
electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Fitri, A., Loh, K. S., Puspasari, I., & Mohamad, A. B. (2017). Cobalt-doped carbon xerogel with different initial pH values toward oxygen reduction. In Advanced Materials for Sustainability and Growth: Proceedings of the 3rd Advanced Materials Conference 2016, 3rd AMC 2016 (Vol. 1901). [020027] American Institute of Physics Inc.. https://doi.org/10.1063/1.5010464

Cobalt-doped carbon xerogel with different initial pH values toward oxygen reduction. / Fitri, Azim; Loh, Kee Shyuan; Puspasari, Ifa; Mohamad, Abu Bakar.

Advanced Materials for Sustainability and Growth: Proceedings of the 3rd Advanced Materials Conference 2016, 3rd AMC 2016. Vol. 1901 American Institute of Physics Inc., 2017. 020027.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fitri, A, Loh, KS, Puspasari, I & Mohamad, AB 2017, Cobalt-doped carbon xerogel with different initial pH values toward oxygen reduction. in Advanced Materials for Sustainability and Growth: Proceedings of the 3rd Advanced Materials Conference 2016, 3rd AMC 2016. vol. 1901, 020027, American Institute of Physics Inc., 3rd Advanced Materials Conference 2016, AMC 2016, Langkawi Island, Kedah, Malaysia, 28/11/16. https://doi.org/10.1063/1.5010464
Fitri A, Loh KS, Puspasari I, Mohamad AB. Cobalt-doped carbon xerogel with different initial pH values toward oxygen reduction. In Advanced Materials for Sustainability and Growth: Proceedings of the 3rd Advanced Materials Conference 2016, 3rd AMC 2016. Vol. 1901. American Institute of Physics Inc. 2017. 020027 https://doi.org/10.1063/1.5010464
Fitri, Azim ; Loh, Kee Shyuan ; Puspasari, Ifa ; Mohamad, Abu Bakar. / Cobalt-doped carbon xerogel with different initial pH values toward oxygen reduction. Advanced Materials for Sustainability and Growth: Proceedings of the 3rd Advanced Materials Conference 2016, 3rd AMC 2016. Vol. 1901 American Institute of Physics Inc., 2017.
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