青岛科技大学主页平台管理系统 chenkezheng--Home-- 2-D zinc ferrite "moss" furred on 3-D zinc oxide tetrapods to boost detection sensitivity of hydrogen sulfide

陈克正

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Supervisor of Doctorate Candidates

Supervisor of Master's Candidates

Date of Birth:1965-10-27

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2-D zinc ferrite "moss" furred on 3-D zinc oxide tetrapods to boost detection sensitivity of hydrogen sulfide

Release time:2023-10-19 Hits:

Key Words:GAS-SENSING PERFORMANCE; OXYGEN VACANCIES; HETEROSTRUCTURES; FABRICATION; ZNFE2O4; SENSOR; NANOSTRUCTURES; CONSTRUCTION; GROWTH; UV

Abstract:In this study, a two-/three-dimension (2D/3D) architecture was designed and fabricated by a facile dip-calcination procedure. In this design, moss-like zinc ferrite (ZnFe2O4) was grown on the surface of 3D zinc oxide tetrapods (ZnO-T) to form a semiconductor heterostructure. This unique architecture features the merits of copious porosities that facilitate gas circulation and boost active gas-absorption sites, making it exceedingly applicable for gas detection. It was found that this architecture was very sensitive towards hydrogen sulfide gas (H2S, 2 ppm, 250 degrees C, 65% RH) with ultrafast response and recovery time of 2 and 9 s, respectively. Further, low-concentration gas tests at 250 degrees C, 65% RH unraveled that it showed quick response even when the concentration of H2S gas was as low as 0.6 ppb.

Volume:148

Issue:

Translation or Not:no

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