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

作者:Chun Sung Hee; Kim Hyun Yeong; Jang Hyesu; Lee Yejung; Jo Ara; Lee Nam Suk; Yu Hak Ki; Lee Youngmi; Kim Myung Hwa*; Lee Chongmok*
来源:CrystEngComm, 2017, 19(25): 3455-3464.
DOI:10.1039/c7ce00637c

摘要

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 electro-chemical 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 mu m in diameter were carefully tested in order to explore the nonenzymatic amperometric sensing capacity of ascorbic acid as a biologically important molecule.

  • 出版日期2017-7-7