基于Pd@SnO<sub>2</sub>-ZnO纳米纤维的薄膜型挥发性有机物传感器研究

引用本文: 胡明江, 吕春旺, 赵丽霞, 宋艳苹, 衡丽君, 王旭荣. 基于Pd@SnO₂-ZnO纳米纤维的薄膜型挥发性有机物传感器研究[J]. 分析化学, 2021, 49(3): 407-414. doi: 10.19756/j.issn.0253-3820.201547 shu

Citation: HU Ming-Jiang, LYU Chun-Wang, ZHAO Li-Xia, SONG Yan-Ping, HENG Li-Jun, WANG Xu-Rong. Research on Film-type Volatile Organic Compounds Sensor Based on Pd@SnO₂-ZnO Nanofiber[J]. Chinese Journal of Analytical Chemistry, 2021, 49(3): 407-414. doi: 10.19756/j.issn.0253-3820.201547 shu

基于Pd@SnO₂-ZnO纳米纤维的薄膜型挥发性有机物传感器研究

胡明江 ^{1,
,} ,
吕春旺 ^2, ,
赵丽霞 ^1, ,
宋艳苹 ^1, ,
衡丽君 ^1, ,
王旭荣 ^1,

1.
河南城建学院能源与建筑环境工程学院, 平顶山 467036;
2.
华北电力大学能源动力与机械工程学院, 保定 071003

通讯作者: 胡明江,E-mail:hu_mingjiang@163.com

基金项目:
河南省自然科学基金项目（No.182300410264）和河南省科技攻关计划项目（No.182102210225）资助。

摘要: 采用静电纺丝法制备了4种不同类型ZnO纳米纤维，均匀涂覆于刻有叉指铂金电极的硅基底表面形成敏感薄膜，设计了一种薄膜型挥发性有机物传感器。采用X射线衍射仪、扫描电子显微镜和X-射线光电子能谱仪，表征了敏感薄膜的相组成和微观形貌，分析了敏感薄膜的气敏机理和电化学特性，测试了传感器对甲苯、甲醛、丙酮和乙醇的灵敏特性、温度特性、动态响应和选择稳定性。结果表明，当温度为200℃，浓度为30 μg/m³时，传感器（Pd@SnO₂-ZnO）对甲苯、甲醛、丙酮和乙醇的响应最大，分别为70.1、56、34.9和13.8，动态响应/恢复时间分别为4.9/9.6、13.8/12.2、20.2/17.6和29.6/39.6 s，检出限分别为1.0、3.0、4.0和5.0 μg/m³。连续使用1200 h后，传感器对甲苯、甲醛、丙酮和乙醇响应衰减量分别为0.21、0.30、0.22和0.10。

关键词:

English

Research on Film-type Volatile Organic Compounds Sensor Based on Pd@SnO₂-ZnO Nanofiber

1.
School of Energy and Building Environmental Engineering, Henan University of Urban Construction, Pingdingshan 467036, China;
2.
School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China

Corresponding author: HU Ming-Jiang, hu_mingjiang@163.com

Received Date: 10 September 2020
Revised Date: 04 January 2021
Fund Project:
Natural Science Foundation of He'nan Province (No. 182300410264) and the Science and Technology Foundation of He'nan Province (No.182102210225)

Abstract: ZnO, SnO₂-ZnO, Pd@ZnO and Pd@SnO₂-ZnO composite nanofibers were synthesized by electrospinning method. On the basis of this, a new film-type volatile organic compounds (VOCs) sensor was designed by transferring the composite nanofibers above onto silicon substrate with platinum-inter digital electrodes by dip-coating method. Multiple characterizations were employed to investigate the crystal structure, composition, morphology, and bonding states of the composite nanofibers. The characteristic tests of Pd@SnO₂-ZnO sensor were carried out in gas sensor test system. The obtained results clearly demonstrated that Pd@SnO₂-ZnO nanofibers exhibited significantly enhanced volatile organic compounds sensing performance compared with other nanofibers. When the operating temperature was 200℃ and the target gas concentration was 30 μg/m³, the responses of Pd@SnO₂-ZnO sensor toward different volatile organic components including toluene, formaldehyde, acetone and ethanol were 70.1, 56, 34.9 and 13.8, respectively. Dynamic response time and recover time of Pd@SnO₂-ZnO sensor were 4.9/9.6, 13.8/12.2, 20.2/17.6 and 29.6/39.6 s respectively, which was much higher than that of ZnO nanofibers. The enhanced VOC sensing properties of Pd@SnO₂-ZnO composite nanofibers could be attributed to the electronic and chemical sensitizations of Pd and the junction formation at the interface of SnO₂ and ZnO.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

基于Pd@SnO₂-ZnO纳米纤维的薄膜型挥发性有机物传感器研究

通讯作者: 胡明江,E-mail:hu_mingjiang@163.com

English

Research on Film-type Volatile Organic Compounds Sensor Based on Pd@SnO₂-ZnO Nanofiber

Corresponding author: HU Ming-Jiang, hu_mingjiang@163.com

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

基于Pd@SnO2-ZnO纳米纤维的薄膜型挥发性有机物传感器研究

通讯作者: 胡明江,E-mail:hu_mingjiang@163.com

English

Research on Film-type Volatile Organic Compounds Sensor Based on Pd@SnO2-ZnO Nanofiber

Corresponding author: HU Ming-Jiang, hu_mingjiang@163.com

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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