关键字：GAS-SENSING PERFORMANCE; OXYGEN VACANCIES; HETEROSTRUCTURES; FABRICATION; ZNFE2O4; SENSOR; NANOSTRUCTURES; CONSTRUCTION; GROWTH; UV
摘要：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.
卷号：148
期号：
是否译文：否