Synthesis and gas-sensing properties of P-type Na0.44MnO2 nanoribbons

被引：8
作者：
Yu, Jiangying [1 ]
Hong, Maorong [1 ]
Wang, Li [2 ]
Huang, Kai [1 ]
Guo, Yuxian [1 ]
机构：
[1] Anhui Jianzhu Univ, Sch Math & Phys, Hefei 230601, Peoples R China
[2] Anhui Jianzhu Univ, Sch Environm & Energy Engn, Hefei 230601, Peoples R China
来源：
MATERIALS LETTERS | 2016年 / 164卷
基金：
中国国家自然科学基金;
关键词：
Crystal growth; Semiconductors; Sensors; Nanocrystalline materials; Manganese oxide; ROOM-TEMPERATURE; SENSORS; OXIDES;
D O I：
10.1016/j.matlet.2015.11.053
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Single-crystal Na0.44MnO2 nanoribbons were synthesized by using a molten-salt method. The gas-sensing characteristics of the nanoribbons were investigated in ethanol, acetone and isopropanol gases. The results indicate that the Na0.44MnO2 nanoribbons based sensor is obviously sensitive to these gases at 150-300 degrees C, and the highest sensitivity to ethanol. The maximum ethanol gas response of the nanoribbons was found to be at 210 degrees C. The nanoribbons have a response of 90 for 200 ppm ethanol gas at 210 degrees C and the response time is shorter than 50 s. The temperature dependent resistance of the Na0.44MnO2 nanoribbons in reductive gases indicates a P-type semiconductive property. The gas-sensing mechanism could be explained by chemisorption model. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：440 / 443
页数：4
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