Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 5, Pages 3689-3695Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am4060707
Keywords
NiCo2O4; solvothermal; urchin-like; hollow microspheres; methanol electrooxidation; heavy-metal ions
Funding
- National Key Scientific Program-Nanoscience and Nanotechnology [2011CB933700]
- National Natural Science Foundation of China [21103198, 21073197]
- CAS Institute of Physical Science, University of Science and Technology of China [2012FXCX008]
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A facile synthesis of novel urchin-like NiCo2O4 hierarchical hollow microspheres has been developed based on a template-free solvothermal and subsequent calcination method. The growth process of NiCo2O4 hollow microsphere precursors has been investigated, and a plausible mechanism was proposed. Because of their unique structure and high specific surface area, these NiCo2O4 hollow microspheres displayed enhanced electrochemical properties in methanol electrooxidation and determination of heavy-metal ions compared with solid urchin-like NiCo2O4 microspheres, Co3O4, and NiO microspheres. The good electrochemical performances suggested that these unique hierarchical NiCo2O4 hollow microspheres could be promising materials for energy and environmentally related applications.
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