Optical Ammonia Sensor Based on ZnO:Eu2+ Fluorescence Quenching Nanoparticles

被引：4

作者：

Yang, Wanting ^{[1
]}

Feng, Wenlin ^{[1
]}

Yang, Xiaozhan ^{[1
,2
]}

Chen, Hongliang ^{[1
]}

He, Ying ^{[1
]}

Deng, Dashen ^{[1
]}

Peng, Zhiqing ^{[1
]}

机构：

[1] Chongqing Univ Technol, Dept Phys & Energy, Chongqing 400054, Peoples R China

[2] Rice Univ, Dept Mat Sci & NanoEngn, Houston, TX 77005 USA

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES | 2018年 / 73卷 / 09期

关键词：

Ammonia Gas; Fluorescence Quenching; Optical Sensor; ZnO:Eu2+; STERN-VOLMER EQUATION; DOPED ZNO; TEMPERATURE;

D O I：

10.1515/zna-2018-0244

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An ammonia sensor is conceived and constructed using the downconverting ZnO:Eu2+ nanoparticles that can be excited by near-ultraviolet (378 nm) light and emit indigo color light. The capability of the ZnO:Eu2+ nanoparticles for ammonia gas sensing was studied from fluorescence quenching measurements. When these nanoparticles were exposed to ammonia gas, a significant luminescent intensity variation of the excitation spectra was observed. The detection limit of the proposed optical gas sensor is 20 ppm with a good linearity (R-2 = 0.9759) from 0 to 80 ppm of ammonia. The sensor has the advantages of a simple structure, high sensitivity, easy fabrication, and low cost, and can be used for sensing ammonia gas in factories, laboratories, etc.

引用

页码：781 / 784

页数：4

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