Silica Nanowires Decorated with Cryptophane-A for Sensing Methane

Abstract:

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Silica nanowires (NWs) were prepared on the Si wafer with a modified thermal evaporation of silicon monoxide and cryptophane-A was fixed to the surface of the silica NWs for methane sensing. Scanning electron microscopy equipped with EDS was used to characterize the morphology and composition of the sensitive material. A fiber optical device was designed to operate via luminescence reflection and the methane sensing properties were characterized at room temperature. The sensing material shows a stable and strong blue luminescence when excited by UV light source at wavelength of 380 nm, and it is efficiently quenched by molecular methane within the methane concentration range between 0.2% and 3.5% (v/v). This novel methane sensing material has significant advantages and might have application potential.

Info:

Periodical:

Advanced Materials Research (Volumes 295-297)

Edited by:

Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu

Pages:

179-182

DOI:

10.4028/www.scientific.net/AMR.295-297.179

Citation:

C. Tao et al., "Silica Nanowires Decorated with Cryptophane-A for Sensing Methane", Advanced Materials Research, Vols. 295-297, pp. 179-182, 2011

Online since:

July 2011

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$35.00

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