纳米粒子的制备及对H2气敏性能的研究

doi:10.3969/j.issn.2095-2198.2022.05.002

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摘要

采用气相反应法制备WO3纳米粒子，并引入贵金属Pd制备了一系列Pd-WO3纳米粒子.通过XRD、FE-SEM、XPS及TEM等分析手段对制备的Pd-WO3纳米粒子进行结构及形貌表征.测试纳米粒子对H2的敏感特性，并讨论Pd掺杂量对气敏性能的影响.结果表明：适量引入贵金属Pd可以显著改善WO3材料对H2的气敏性能，在150 ℃的工作温度下，掺杂质量分数为1%Pd的WO3纳米颗粒对体积分数为200×10-6的H2响应最高，为29，是未掺杂Pb的传感器的2倍左右，并具有良好的循环稳定性.最后，对Pd掺杂的WO3纳米粒子的气敏机理进行讨论.

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关键词: WO3纳米粒子')" href="#">

WO3纳米粒子 Pd掺杂 H2 气体传感性能

Abstract:

WO3 nanoparticles were prepared by gas phase reaction,and a series of Pd-WO3 nanoparticles were prepared by introducing precious metal Pd.The structure and morphology of Pd-WO3 nanoparticles were characterized by XRD,FE-SEM,XPS and TEM.The sensitivity of nanoparticles to H2 was tested,and the effect of Pd doping on the gas sensing performance was discussed.The results show that the gas sensitivity of WO3 to H2 can be significantly improved by introducing a proper amount of precious metal Pd.At 150 ℃,the volume fraction of WO3 nanoparticles doped with 1% Pd is 200×10-6 has the highest H2 response,which is 29.Which is about 2 times compared that of the sensor without Pb doping,and has good cycle stability.Finally,the gas sensing mechanism of Pd doped WO3 nanoparticles was discussed.

Key words: WO3 nanoparticles')" href="#">

WO3 nanoparticles Pd-doping H2 gas sensing properties

出版日期: 2022-10-30 发布日期: 2024-03-12 整期出版日期: 2022-10-30

ZTFLH:	TQ132
	4+1

基金资助:

国家自然科学基金面上项目（61973223）; 沈阳市中青年科技创新人才支持计划项目（RC200352）

通讯作者: 孟丹

作者简介: 乔桐桐(1995—)，女，辽宁大连人，硕士研究生在读，主要从事功能纳米材料的研究.

引用本文:

乔桐桐, 孟丹, 司建朋, 巩晓辉, 李训, 潘禹伯.

纳米粒子的制备及对H2气敏性能的研究 [J]. 沈阳化工大学学报, 2022, 36(5): 391-398.
QIAO Tong-tong, MENG Dan, SI Jian-peng, GONG Xiao-hui, LI Xun, PAN Yu-bo.

Preparation of Pd-WO3 Nanoparticles and Study on Their H2 Gas Sensing Properties . Journal of Shenyang University of Chemical Technology, 2022, 36(5): 391-398.

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https://xuebao.syuct.edu.cn/CN/10.3969/j.issn.2095-2198.2022.05.002 或 https://xuebao.syuct.edu.cn/CN/Y2022/V36/I5/391

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