Facile one-pot transformation using structure-guided combustion waves of micro-nanostructured ?-Bi2O3 to ?-Bi2O3@C and analysis of electrochemical capacitance

By Hwang, Hayoung; Shin, Jung-ho; Lee, Kang Yeol; Choi, Wonjoon
Published in Applied Surface Science 2018

Abstract

Precise phase-transformation can facilitate control of the properties of various materials, while an organic coating surrounding inorganic materials can yield useful characteristics. Herein, we demonstrate facile, selective manipulation of micro-nanostructured bismuth oxide (Bi2O3) for phase transformation from microflower-like ?-Bi2O3 to micropill-like ?-Bi2O3, with carbon-coating layer deposition, using structure-guided combustion waves (SGCWs). Microflower-like ?-Bi2O3 are synthesized as core materials and nitrocellulose is coated on their surfaces for the formation of core-shell hybrid structures of Bi2O3 and chemical fuel. The SGCWs, which propagate along the core-material and fuel interfaces, apply high thermal energy (550

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