α-Fe2O3纳米棒:低温合成、表征及湿度响应性能

2012 1st International Symposium on Physics and Technology of Sensors (ISPTS-1) Pub Date : 2012-03-07 DOI:10.1109/ISPTS.2012.6260956

P. Adhyapak, U. Mulik, D. Amalnerkar, I. Mulla

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引用次数: 0

摘要

采用无表面活性剂的化学方法，在低温条件下制备了α-Fe2O3纳米棒。该方法的优点是成分控制好，均匀性好。利用x射线衍射、拉曼光谱、紫外可见光谱和场发射扫描电镜等多种物理化学表征技术对产物进行了表征。进一步研究了这些粉末的湿度传感性能。传感器对湿度的变化反应迅速。当暴露于湿度从20%到90% RH时，电阻系统地变化四个数量级。

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α-Fe2O3 nanorods: Low temperature synthesis, characterization and humidity response properties

α-Fe2O3 nanorods have been prepared at low temperature by a facile surfactant free chemical route. The advantage of this method is good composition control and homogeneity. The products were characterized using various physicochemical characterization techniques such as X-ray Diffractometry, Raman spectroscopy, UV-Visible spectroscopy and Field Emission Scanning Electron Microscopy. These powders were further studied for their humidity sensing performance. The sensors exhibited quick responses for change in the humidity. The resistance systematically varies by four orders of magnitude on exposure to humidity from 20 to 90 % RH.

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2012 1st International Symposium on Physics and Technology of Sensors (ISPTS-1)

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