Synthesis and characterization of MgO nanocrystals for biosensing applications
Synthesis and characterization of MgO nanocrystals for biosensing applications
复制标题
用于生物传感应用的 MgO 纳米晶体的合成和表征
DOI：
10.1016/j.jallcom.2015.01.294
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发表时间：
2015-05-25
影响因子：
6.2
通讯作者：
Yang, Baohe
中科院分区：
文献类型：
--
作者：
Li, Hongji;Li, Mingji;Yang, Baohe
MgO nanocrystals were prepared using a simple direct current arc plasma jet chemical vapor deposition method. Magnesium nitrate was used as source material and Mo film was used as a substrate and catalyst. The high-temperature plasma produced ensured rapid synthesis of the MgO nanocrystals. The as-prepared nanocrystals were characterized by field-emission scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, energy-dispersive spectroscopy, Fourier transform infrared spectrometry, ultraviolet-visible spectrophotometry, and photoluminescence measurements. The as-synthesized samples were found to consist of cubic MgO nanobelts and nanosheets with large surface areas and low coordination oxide ions, and contained numerous contacts, rough edges, vacancies, and doping defects. The nanostructures exhibited excellent electrochemical sensing properties with high-sensing sensitivity toward ascorbic acid. Their high electrocatalytic activity was attributed to the effect of defects and the surface electron transfer ability of the one-dimensional MgO nanobelts. (C) 2015 Elsevier B.V. All rights reserved.
