SnO2-CoO/carbon-coated CoO core/shell 나노선 복합체의 합성 및 구조분석
Synthesis and Characterization of SnO2-CoO/carbon-coated CoO Core/shell Nanowire Composites
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SnO2-CoO/carbon-coated CoO core/shell nanowire composites were synthesized by using electrospinning andhydrothermal methods. In order to obtain SnO2-CoO/carbon-coated CoO core/shell nanowire composites, SnO2-Co3O4nanowire composites and SnO2-Co3O4/polygonal Co3O4 core/shell nanowire composites are also synthesized. To demonstratetheir structural, chemical bonding, and morphological properties, field-emission scanning electron microscopy,transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were carried out. Theseresults indicated that the morphologies and structures of the samples were changed from SnO2-Co3O4 nanowires havingcylindrical structures to SnO2-Co3O4/Co3O4 core/shell nanowires having polygonal structures after a hydrothermal process. At last, SnO2-CoO/carbon-coated CoO core/shell nanowire composites having irregular and high surface area areformed after carbon coating using a polypyrrole (PPy). Also, there occur phases transformation of cobalt phases fromCo3O4 to CoO during carbon coating using a PPy under a argon atmosphere.
Abstract
SnO2-CoO/carbon-coated CoO core/shell nanowire composites were synthesized by using electrospinning andhydrothermal methods. In order to obtain SnO2-CoO/carbon-coated CoO core/shell nanowire composites, SnO2-Co3O4nanowire composites and SnO2-Co3O4/polygonal Co3O4 core/shell nanowire composites are also synthesized. To demonstratetheir structural, chemical bonding, and morphological properties, field-emission scanning electron microscopy,transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were carried out. Theseresults indicated that the morphologies and structures of the samples were changed from SnO2-Co3O4 nanowires havingcylindrical structures to SnO2-Co3O4/Co3O4 core/shell nanowires having polygonal structures after a hydrothermal process. At last, SnO2-CoO/carbon-coated CoO core/shell nanowire composites having irregular and high surface area areformed after carbon coating using a polypyrrole (PPy). Also, there occur phases transformation of cobalt phases fromCo3O4 to CoO during carbon coating using a PPy under a argon atmosphere.
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