A facile growth process of highly single crystalline Ir1-xVxO2 mixed metal oxide nanorods and their electrochemical properties

Sung Hee Chun, Hyun Yeong Kim, Hyesu Jang, Yejung Lee, Ara Jo, Nam Suk Lee, Hak Ki Yu, Youngmi Lee, Myung Hwa Kim, Chongmok Lee

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2 Scopus citations

Abstract

We introduce a facile growth process for mixed metal oxide nanorods of Ir1-xVxO2 in the broad range of metal contents between iridium and vanadium via a vapor phase transport process and their electrochemical performance. The growth process of Ir1-xVxO2 nanorods was performed by modulating the ratios of two precursors of VO2 and IrO2, the growth temperature, the position of metal oxide precursors in a furnace, and the flow rate of carrier gases. The results indicated that quasi one-dimensional nanostructures of Ir1-xVxO2 can be obtained of a single crystalline nature with the tetragonal rutile crystal structure by randomly incorporating Ir4+ and V4+ metal ions into the same lattice unit of the tetragonal structure owing to similar ionic sizes. In addition, the fundamental electrochemical performances for Ir1-xVxO2 nanorods grown directly on an Au microelectrode of 25 μm in diameter were carefully tested in order to explore the nonenzymatic amperometric sensing capacity of ascorbic acid as a biologically important molecule.

Original languageEnglish
Pages (from-to)3455-3464
Number of pages10
JournalCrystEngComm
Volume19
Issue number25
DOIs
StatePublished - 2017

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