Magnesium oxide nanocubes deposited on an overhead projector sheet: synthesis and resistivity-based hydrogen sensing capability

被引：0

作者：

Natarajan Pradeep

Chaitra Venkatachalaiah

Uma Venkatraman

Chella Santhosh

Amit Bhatnagar

Soon Kwan Jeong

Andrews Nirmala Grace

机构：

[1] Mount Carmel college,Department of Nanoscience and Technology

[2] Mount Carmel college,Department of Electronics

[3] University of Eastern Finland,Department of Environmental and Biological Sciences

[4] Korea Institute of Energy Research,Green Energy Process Laboratory

[5] VIT University,Centre for Nanotechnology Research

来源：

Microchimica Acta | 2017年 / 184卷

关键词：

Thermal chemical vapor deposition; Hydrogen sensor; TEM; MgO Nanocubes; Flexible substrate; Gas sensor;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

This work reports the growth of magnesium oxide (MgO) nanocubes by thermal chemical vapor deposition at various temperatures. The MgO nanocubes were investigated by X-ray diffraction, FESEM, EDAX, TEM and FTIR studies to study its various properties. The material is well-dispersed and has a cubical shape with an average size of 16 nm. XRD shows a face cubic centered structure, and SEM and TEM reveal nanocube morphology. The mechanism of the growth process is briefly detailed. The MgO nanocubes, if deposited on an overhead projector sheet, can be used as a chemoresistive sensor for hydrogen at a constant temperature of typically 200 °C and an applied voltage of 5 V. The sensor can detect hydrogen in the 3000 to 5000 ppm concentration range, and the lowest detectable concentration (at a signal-to-noise ratio of 3) is 3000 ppm.

引用

页码：3349 / 3355

页数：6