One-step room-temperature solid-phase synthesis of ZnFe2O4 nanomaterials and its excellent gas-sensing property

被引：40
作者：
Cao, Yali [1 ]
Jia, Dianzeng [1 ]
Hu, Pengfei [2 ]
Wang, Ruiying [1 ]
机构：
[1] Xinjiang Univ, Inst Appl Chem, Key Lab Adv Funct Mat Autonomous Reg, Key Lab Clean Energy Mat & Technol,Minist Educ, Urumqi 830046, Xinjiang, Peoples R China
[2] Shanghai Univ, Lab Microstruct, Shanghai 200444, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2013年 / 39卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Sensors; Nanomaterials; Oxides; Solid-phase synthesis; NANOSTRUCTURED NICKEL FERRITE; OXIDE THIN-FILMS; RAPID SYNTHESIS; STATE REACTION; NANOPARTICLES; NANOTUBES; SENSOR; NANOWIRES; NANORODS; BEHAVIOR;
D O I：
10.1016/j.ceramint.2012.09.076
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
ZnFe2O4 nanomaterials have been synthesized by simple one-step solid-phase chemical reaction between Zn(CH3COO)(2)center dot 2H(2)O, FeCl3 center dot 9H(2)O and NaOH within a very short time at room temperature. The solid-phase products were characterized by X-ray diffraction, energy-dispersive X-ray spectroscopy, thermogravimetic analysis, transmission electron microscopy and scanning electron microscopy. Results indicated that the particle size of product can be obviously let up and the agglomeration phenomenon can be improved by the surfactant. Moreover, the ZnFe2O4 nanomaterials were applied in gas sensor and exhibited much better sensing performance than bulk ZnFe2O4. The as-prepared ZnFe2O4 nanomaterials have high sensitivity, good selectivity and fast response/ recovery characteristic for ethanol and hydrogen sulfide. The improved ZnFe2O4 nanomaterials have high response value of 21.5 and 14.8 for ethanol and hydrogen sulfide in the optimized operating temperature of 332 degrees C and 240 degrees C, respectively. The response and recovery time was found to be within 4 s and 14 s for ethanol, while 7 s and 25 s for hydrogen sulfide. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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收藏
页码：2989 / 2994
页数：6
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