首页> 外文期刊>CERAMICS INTERNATIONAL >Glycine combusted ZnFe_2O_4 gas sensor: Evaluation of structural, morphological and gas response properties
【24h】

Glycine combusted ZnFe_2O_4 gas sensor: Evaluation of structural, morphological and gas response properties

机译:甘氨酸燃烧的ZnFe_2O_4气体传感器:结构,形态和气体响应特性的评估

获取原文
获取原文并翻译 | 示例
           

摘要

A simple and robust synthesis approach to zinc based spinel ferrite (ZnFe_2O_4) using the glycine combustion method is reported. The route utilizes divalent zinc nitrate (Zn(NO_3)_2 · 6H_2O) and trivalent iron nitrate (Fe(NO_3)_3 · 9H_2O) precursors in aqueous solution (distilled H_2O). Glycine (NH_2-CH_2-COOH) acts as a fuel for the combustion process and subsequent ferrite (ZnFe_2O_4) formation. As produced material powder was sintered at 700 °C in the pellet form and examined for LPG, acetone, ethanol and ammonia sensing properties in the temperature range of 200-450 °C. XRD and TEM analyses revealed the formation of single phase nanocrystalline material with crystallite size in the range of 25-30 nm. SEM analysis confirmed the coarse structural morphology due to auto-ignition during the combustion reaction. The produced ferrite showed maximum response to both acetone (57%) and LPG (54%) at operating temperatures of 250 °C and 375 °C, respectively. Further, the sensor showed decent stability and reproducibility towards LPG and acetone, over the period of 30 days, which was then decreased by 2% up to 45 days. The present study confirms that the as produced ZnFe_2O_4 is a promising candidate for fabricating high performance sensors towards LPG and acetone sensing, in practice.
机译:报道了一种利用甘氨酸燃烧法合成锌基尖晶​​石铁氧体(ZnFe_2O_4)的简单而可靠的方法。该路线利用水溶液(蒸馏水H_2O)中的二价硝酸锌(Zn(NO_3)_2·6H_2O)和三价硝酸铁(Fe(NO_3)_3·9H_2O)前体。甘氨酸(NH_2-CH_2-COOH)用作燃烧过程和随后形成铁素体(ZnFe_2O_4)的燃料。将制成的材料粉末以小球形式在700°C下烧结,并在200-450°C的温度范围内检查LPG,丙酮,乙醇和氨气的感测特性。 XRD和TEM分析表明,形成的单相纳米晶体材料的晶粒尺寸在25-30 nm之间。 SEM分析证实了在燃烧反应过程中由于自燃引起的粗大结构形态。产生的铁氧体分别在250°C和375°C的工作温度下显示出对丙酮(57%)和LPG(54%)的最大响应。此外,该传感器在30天的时间内对LPG和丙酮显示出良好的稳定性和可重复性,然后在45天之内下降了2%。本研究证实,所生产的ZnFe_2O_4在实践中是制造面向液化石油气和丙酮传感的高性能传感器的有前途的候选者。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号