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PdO表面催化改性WO3纳米颗粒对丙酮的气敏性能
作者:李彦 花中秋 武一 曾艳 奉轲 王天赐 邱志磊 
单位:河北工业大学电子信息工程学院 天津市电子材料与器件重点实验室 天津 300401 
关键词:三氧化钨 催化改性 氧化钯 丙酮 气敏性能 
分类号:TP212.2
出版年,卷(期):页码:2017,45(10):0-0
DOI:
摘要:

 采用酸化法制备了WO3纳米颗粒,利用丝网印刷技术制作了厚膜型气敏传感器件,并用动态配气法分析了低浓度丙酮气体的气敏响应特性。结果表明:酸化法制备的WO3纳米颗粒为比表面积约10 m2/g的纳米片状结构,对低浓度的丙酮气体响应较弱。为提升其对丙酮的气敏响应能力,采用浸渍法在WO3纳米颗粒表面负载了PdO。结果表明:PdO负载后的WO3对丙酮气敏响应值提高了约5倍,对1.5×10?6的丙酮气体的响应可达3.65,即少量的PdO负载(1.0%)会显著提高WO3对丙酮的气敏特性。对丙酮气敏响应机理研究表明,表面吸附氧及由PdO表面催化修饰的晶格氧共同影响PdO?WO3气敏传感器的性能。

 
基金项目:
国家自然科学基金青年项目(61501167);天津市自然科学基金面上项目(15JCYBJC52100);河北省自然科学基金青年项目(F2016202214)。
作者简介:
李 彦(1991—),女,硕士研究生。
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