• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Enhanced ethanol sensing properties based on Sm2O3-doped ZnO nanocomposites
【24h】

Enhanced ethanol sensing properties based on Sm2O3-doped ZnO nanocomposites

机译：基于Sm2O3掺杂的ZnO纳米复合材料增强的乙醇感测性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

ZnO nanocomposites doped with 2, 4, 6 and 8 wt% samaria (Sm2O3) were prepared by a novel sol spray combustion method. The samples were characterized by XRD, FESEM, EDX, UV-vis DRS and Raman techniques. The XRD results show that all samples containing various amounts of Sm2O3 have a hexagonal wurtzite structure. UV-vis spectra show that the addition of Sm2O3 did not affect the band gap of ZnO. Raman spectra exhibit that the Sm2O3-doped ZnO nanocomposite keeps the crystal structure of the bulk ZnO and possesses more surface defects. The influence of Sm2O3 dopant on the response and selectivity for ethanol detecting of the sensor based on ZnO nanoparticles was investigated. The sensors' responses were measured in the presence of 100 ppm of ethanol, formaldehyde, methanol and toluene. As 4 wt% Sm2O3 was added to ZnO, the response to ethanol at various temperatures was significantly enhanced. The results reveal that doping with Sm2O3 may be a promising route for the production of ZnO-based gas sensors with good ethanol sensing properties.
机译：通过新型的溶胶喷雾燃烧法制备了掺杂有2、4、6和8 wt％的samaria（Sm2O3）的ZnO纳米复合材料。通过XRD，FESEM，EDX，UV-vis DRS和拉曼技术对样品进行表征。 XRD结果表明，所有含有不同量的Sm2O3的样品均具有六角纤锌矿结构。紫外可见光谱表明，添加Sm2O3不会影响ZnO的带隙。拉曼光谱表明，Sm2O3掺杂的ZnO纳米复合材料保持了整体ZnO的晶体结构并具有更多的表面缺陷。研究了Sm2O3掺杂剂对基于ZnO纳米粒子的传感器的乙醇检测响应和选择性的影响。在100 ppm乙醇，甲醛，甲醇和甲苯的存在下测量传感器的响应。当将4 wt％Sm2O3添加到ZnO中时，在各种温度下对乙醇的响应都显着增强。结果表明，用Sm2O3掺杂可能是生产具有良好乙醇感测特性的ZnO基气体传感器的有前途的途径。

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