Nitrogen-Doped Carbon Nanosheets Decorated With Mn 2 O 3 Nanoparticles for Excellent Oxygen Reduction Reaction.

Autor: Qasim M; Department of Physics, The University of Lahore, Lahore, Pakistan., Hou J; School of Environmental Science and Engineering, Yangzhou University, Yangzhou, China., Qadeer MA; Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China., Butt S; Department of Material Science and Engineering, Institute of Space Science and Technology, Islamabad, Pakistan., Farooq MH; Basic Science and Humanities Department, University of Engineering & Technology, Lahore, Pakistan., Farooq MQ; Department of Physics, The University of Lahore, Lahore, Pakistan., Idrees F; Department of Physics, The University of Lahore, Lahore, Pakistan., Tanveer M; Department of Physics, University of Lahore, Gujranwala, Pakistan., Zou J; Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China., Tahir M; Department of Physics, The University of Lahore, Lahore, Pakistan.
Jazyk: angličtina
Zdroj: Frontiers in chemistry [Front Chem] 2019 Nov 07; Vol. 7, pp. 741. Date of Electronic Publication: 2019 Nov 07 (Print Publication: 2019).
DOI: 10.3389/fchem.2019.00741
Abstrakt: The purpose of this study is to develop an active, low cost, non-precious, stable, and high-performance catalyst for oxygen reduction reaction (ORR). In this regard, Mn 2 O 3 -decorated nitrogen-doped carbon nanosheets (Mn 2 O 3 /NC) are fabricated by a two-step strategy involving a hydrothermal method and a solid-state method. In the resultant structures, very fine Mn 2 O 3 nanoparticles with an average size of about 5 nm are strongly attached to nitrogen-doped carbon nanosheets. The role of the Mn 2 O 3 nanoparticles is to provide active sites for ORR, while the presence of the nitrogen-doped carbon not only enhances the conductivity of the overall structure but is also helpful for overall stability. The Mn 2 O 3 /NC shows good onset potential (0.80 V@-1 mA/cm 2 ), methanol crossover effect, and stability (90%).
(Copyright © 2019 Qasim, Hou, Qadeer, Butt, Farooq, Farooq, Idrees, Tanveer, Zou and Tahir.)
Databáze: MEDLINE
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