Journal
NANOMATERIALS
Volume 12, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/nano12010085
Keywords
hydrothermal; MnWO4; graphene oxide; urea oxidation reaction (UOR)
Categories
Funding
- National Research Foundation of Korea (NRF) - Korean government [2020R1A4A1019227, 2020R1A2C1012439]
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In this study, manganese tungstate/graphene oxide composites were prepared by hydrothermal synthesis, showing excellent electrocatalytic properties for energy storage and conversion applications. This research provides a new approach for synthesizing inexpensive nanocomposites as promising electrocatalysts.
In this study, manganese tungstate (MW) and MW/graphene oxide (GO) composites were prepared by a facile hydrothermal synthesis at pH values of 7 and 12. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy were used for the structural, compositional, and morphological characterization of the nanoparticles (NPs). The XRD analysis revealed that the formation of monoclinic MnWO4 did not have impurities. The SEM and TEM analyses showed that the synthesized NPs were rod-shaped and well-distributed on the GO. The as-synthesized samples can be used as electrocatalysts for the urea oxidation reaction (UOR). The MW@GO-12 electrocatalyst exhibited higher current density values compared to other electrocatalysts. This study provides a new platform for synthesizing inexpensive nanocomposites as promising electrocatalysts for energy storage and conversion applications.
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