The preparation and gas-sensing properties of NiFe2O4 nanocubes and nanorods

被引：189

作者：

Chu Xiangfeng ^{[1
]}

Jiang Dongli ^{[1
]}

Zheng Chenmou ^{[1
]}

机构：

[1] Sun Yat Sen Zhongshan Univ, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2007年 / 123卷 / 02期

关键词：

NiFe2O4; nanorod; gas sensor;

D O I：

10.1016/j.snb.2006.10.020

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

NiFe2O4 nanorods and nanocubes were prepared by a hydrothermal method without any surfactant for the first time. The length and diameter of the nanorods were about 1 mu m and 30 nm, respectively; the side length of the nanocubes was about 60-100 nm. It was found that the sensor based on NiFe2O4 nanorods was relatively sensitive and selective to triethylamine. Especially, the sensitivity to 1 ppm triethylamine attained 7 when operating at 175 degrees C. On the other hand, the sensor based on NiFe2O4 nanocubes exhibited the opposite behavior; namely, the conductivity of the sensor increased in a reducing gas atmosphere. (C) 2006 Published by Elsevier B.V.

引用

页码：793 / 797

页数：5

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