Large optical CO sensitivity of NO2-pretreated Au-NiO composite films

被引：11

作者：

Ando, M

Zehetner, J

Kobayashi, T

Haruta, M

机构：

[1] Osaka National Research Institute, AIST, MITI, Ikeda, Osaka 563

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1996年 / 36卷 / 1-3期

关键词：

optochemical sensors; CO-sensitive absorbance change; Au-NiO composite films; NO2; pretreatment;

D O I：

10.1016/S0925-4005(97)80121-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Gold-nickel oxide (Au-NiO) composite films were prepared by sputter-deposition of fine Au particles on a glass plate substrate followed by pyrolysis of spin-coated nickel 2-ethylhexanoate. They showed reversible changes in visible-near IR light absorption due to CO in air. The pretreatment of the Au-NiO composite films with NO2 appreciably enhanced the CO-sensitive absorbance change, allowing optical CO detection over a wide concentration range of 50-10 000 ppm.

引用

页码：513 / 516

页数：4

共 15 条

[1] OPTICAL CO DETECTION BY USE OF CUO/AU COMPOSITE FILMS [J].