NiCl2/SiO2 sol-gel material for ammonia sensing

被引：0

作者：

Tsigara, Anna ^{[1
,2
]}

Madamopoulos, Nicholas ^{[1
]}

Hands, Mike ^{[1
]}

Athanasekos, Loukas ^{[1
]}

Meristoudi, Anastasia ^{[1
]}

Mousdis, George ^{[1
]}

Manasis, Giannis ^{[1
]}

Vainos, Nikos ^{[1
,3
]}

Koutselas, Ioannis ^{[3
]}

机构：

[1] Natl Hellen Res Fdn, Theoret & Phys Chem Inst TPCI, Photon & Applicat Lab, 48 Vassileos Konstantinou Ave, Athens 11635, Greece

[2] Natl Tech Univ Athens, Dept Chem Engn, Athens 15780, Greece

[3] Univ Patras, Dept Mat Sci, Patras 26504, Greece

来源：

ADVANCED ENVIRONMENTAL, CHEMICAL, AND BIOLOGICAL SENSING TECHNOLOGIES IV | 2006年 / 6377卷

关键词：

photonic sensors; ammonia sensor; sol-gel; NiCl2;

D O I：

10.1117/12.685106

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

NiCl2/SiO2 sol gel materials are proposed for the first time for ammonia sensing. Thin films are prepared by spin coating or casting the solution on appropriate substrates and tested for sensitivity in ammonia environment. We report a uniform optical response over the visible spectrum in optical transmission. The main mechanism of operation is based on reversible physico-chemical complexation effects, which produce morphology alteration and result in enhanced optical scattering of the thin film material. Such ammonia sensor can find applications in industrial and environmental engineering fields including "on-line" process and quality control, environment monitoring and safety.

引用

页数：9

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