Aluminum-mesoporous silicon coplanar type structure for methanol gas sensing

Khardani, M.; Bouaïcha, M.; Boujmil, M.F.; Bessaı̈s, B.

doi:10.1016/j.micromeso.2010.06.004

Cited by 5 publications

(1 citation statement)

References 18 publications

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“…The huge improvement of gas sensing performance has been achieved by decreasing crystallite size [4, 5], doping by metal elements [6, 7], fabricating heterostructure of metal oxide [8, 9], and, especially, fabricating hierarchical structure [10, 11]. To date, a variety of gas sensors has been proposed to improve gas sensing to methanol, such as In 2 O 3 porous nanospheres [12], three-dimensionally macroporous LaFeO 3 [13], and aluminum-mesoporous silicon coplanar [14]. However, the gas sensing properties of most of methanol gas sensors are not enough satisfactory.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Hierarchical Tin Oxide Nanoflowers with Ultra-High Methanol Gas Sensing at Low Working Temperature

et al. 2019

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In this work, the hierarchical tin oxide nanoflowers have been successfully synthesized via a simple hydrothermal method followed by calcination. The as-obtained samples were investigated as a kind of gas sensing material candidate for methanol. A series of examinations has been performed to explore the structure, morphology, element composition, and gas sensing performance of as-synthesized product. The hierarchical tin oxide nanoflowers exhibit sensitivity to 100 ppm methanol and the response is 58, which is ascribed to the hierarchical structure. The response and recovery time are 4 s and 8 s, respectively. Moreover, the as-prepared sensor has a low working temperature of 200 °C which is lower than that for other gas sensors of such type has been reported elsewhere. The excellent sensitivity of the sensor is caused by its complex phase mixture of SnO, SnO 2 , Sn 2 O 3 , and Sn 6 O 4 revealed by XRD analysis. The proposed hierarchical tin oxide nanoflowers gas sensing material is promising for development of methanol gas sensor. Graphical Abstract The as-obtained hierarchical tin oxide nanoflower (HTONF) gas sensor shows excellent gas-sensing performance at low working temperature (200 °C) and high annealing temperature (400 °C).

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