期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 239, 期 -, 页码 1177-1184出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.08.082
关键词
g-C-3 N-4-Mn3O4 composite; Dielectric barrier discharge; H2S gas; Cataluminescence
资金
- National Natural Science Foundation of China [21375089]
- Science & Technology Department of Sichuan Province of China [2015JY0272]
A novel and facile dielectric barrier discharge (DBD) plasma-based strategy for fast fabrication of g-C3N4-Mn3O4 composite is developed. The obtained g-C3N4-Mn3O4 can be used as a superior cataluminescence (CTL) catalyst for H2S gas sensing, with excellent selectivity, high sensitivity, rapid and stable response. Sub-ppm level H2S is able to be detected based on the proposed sensor, providing a splendid alternative for monitoring H2S in various fields. SEM, TEM, XPS, XRD, N-2 adsorption-desorption measurement were employed to characterize the as-synthesized sensing material. The composite possesses smaller particle size and enlarged specific surface area, which might be attributed to the oxidizing non-equilibrium plasma etching. Besides, using Mn2+-impregnated g-C3N4 as the only precursor and air as working gas, this synthesis is free of solvent, extra oxidant/reductant or high temperature, offering advantages such as simplicity in construction, convenient operation and fast speed, and it could be easily implemented on a large scale and extended to manufacturing diverse metal oxide-modified composites for different purposes. (C) 2016 Elsevier B.V. All rights reserved.
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