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Nanotubular MnO2/graphene oxide composites for the application of open air-breathing cathode microbial fuel cells.
Biosens Bioelectron. 2014 Mar 15; 53:528-34.BB

Abstract

Nanotubular shaped α-MnO2/graphene oxide nanocomposites were synthesized via a simple, cost and time efficient hydrothermal method. The growth of hollow structured MnO2 nanotubes preferentially occurred along the [001] direction as evidenced from the morphological and structural characterizations. The tunnels of α-MnO2 nanotubes easily accommodated the molecular oxygen and exhibited excellent catalytic activity towards the oxygen reduction reaction over the rod structure and was further enhanced with the effective carbon support graphene oxide. The MnO2 nanotubes/graphene oxide nanocomposite modified electrode exhibited a maximum power density of 3359 mW m(-2) which is 7.8 fold higher than that of unmodified electrode and comparable with the Pt/C modified electrode. The microbial fuel cell equipped with MnO2 nanotubes/graphene oxide nanocomposite modified cathode exhibited quick start up and excellent durability over the studied electrodes and is attributed to the high surface area and number of active sites. These findings not only provide the fundamental studies on carbon supported low-dimensional transition-metal oxides but also open up the new possibilities of their applications in green energy devices.

Authors+Show Affiliations

Department of Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021, India. Electronic address: kumarg2006@gmail.com.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24240107

Citation

Gnana Kumar, G, et al. "Nanotubular MnO2/graphene Oxide Composites for the Application of Open Air-breathing Cathode Microbial Fuel Cells." Biosensors & Bioelectronics, vol. 53, 2014, pp. 528-34.
Gnana Kumar G, Awan Z, Suk Nahm K, et al. Nanotubular MnO2/graphene oxide composites for the application of open air-breathing cathode microbial fuel cells. Biosens Bioelectron. 2014;53:528-34.
Gnana Kumar, G., Awan, Z., Suk Nahm, K., & Xavier, J. S. (2014). Nanotubular MnO2/graphene oxide composites for the application of open air-breathing cathode microbial fuel cells. Biosensors & Bioelectronics, 53, 528-34. https://doi.org/10.1016/j.bios.2013.10.012
Gnana Kumar G, et al. Nanotubular MnO2/graphene Oxide Composites for the Application of Open Air-breathing Cathode Microbial Fuel Cells. Biosens Bioelectron. 2014 Mar 15;53:528-34. PubMed PMID: 24240107.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Nanotubular MnO2/graphene oxide composites for the application of open air-breathing cathode microbial fuel cells. AU - Gnana Kumar,G, AU - Awan,Zahoor, AU - Suk Nahm,Kee, AU - Xavier,J Stanley, Y1 - 2013/10/24/ PY - 2013/07/19/received PY - 2013/09/30/revised PY - 2013/10/01/accepted PY - 2013/11/19/entrez PY - 2013/11/19/pubmed PY - 2014/7/16/medline KW - Air cathode KW - Catalytic activity KW - Green energy KW - Nanotubes KW - Surface area SP - 528 EP - 34 JF - Biosensors & bioelectronics JO - Biosens Bioelectron VL - 53 N2 - Nanotubular shaped α-MnO2/graphene oxide nanocomposites were synthesized via a simple, cost and time efficient hydrothermal method. The growth of hollow structured MnO2 nanotubes preferentially occurred along the [001] direction as evidenced from the morphological and structural characterizations. The tunnels of α-MnO2 nanotubes easily accommodated the molecular oxygen and exhibited excellent catalytic activity towards the oxygen reduction reaction over the rod structure and was further enhanced with the effective carbon support graphene oxide. The MnO2 nanotubes/graphene oxide nanocomposite modified electrode exhibited a maximum power density of 3359 mW m(-2) which is 7.8 fold higher than that of unmodified electrode and comparable with the Pt/C modified electrode. The microbial fuel cell equipped with MnO2 nanotubes/graphene oxide nanocomposite modified cathode exhibited quick start up and excellent durability over the studied electrodes and is attributed to the high surface area and number of active sites. These findings not only provide the fundamental studies on carbon supported low-dimensional transition-metal oxides but also open up the new possibilities of their applications in green energy devices. SN - 1873-4235 UR - https://www.unboundmedicine.com/medline/citation/24240107/Nanotubular_MnO2/graphene_oxide_composites_for_the_application_of_open_air_breathing_cathode_microbial_fuel_cells_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0956-5663(13)00704-5 DB - PRIME DP - Unbound Medicine ER -