2025 SMSI Bannerklein

P2NG.23 - CuO-Loaded Porous SiO2 Fibers for H2S Detection

Event
17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
Vienna, Austria
Chapter
P-2 - Nanomaterials for Gas Sensing
Author(s)
S. Werner, C. Seitz, B. Smarsly - Justus-Liebig University Giessen, Institute of Physical Chemistry, Giessen (Germany)
Pages
887 - 888
DOI
10.5162/IMCS2018/P2NG.23
ISBN
978-3-9816876-9-9
Price
free

Abstract

We present a new functional material as sensing layer for hydrogen sulfide (H2S) detection. The sensing mechanism is based on percolation effects in the cupric oxide (CuO) – copper(II)sulfide (CuS) system. By rational design of CuO/SiO2 nano-composite fibers structural stabilization during CuO-CuS phase change can be achieved. This leads to significant improvement in the cycle stability of this new sensor type. A detailed study of the synthesis and the influence of its various parameters on the sensors performance will be shown. This comprises, amongst other methods, nitrogen physisorption, electron microscopy and resistive type sensing measurements under controlled temperature in defined gas atmospheres.

Download