材料科学
热液循环
非阻塞I/O
微球
吸附
多孔性
气体扩散
水热合成
化学工程
形态学(生物学)
扩散
比表面积
纳米技术
多孔介质
复合材料
有机化学
催化作用
工程类
物理
热力学
化学
生物
遗传学
燃料电池
作者
Zhijie Wei,Qu Zhou,Jingxuan Wang,Wen Zeng
标识
DOI:10.1016/j.matlet.2020.127383
摘要
Two novel hierarchical WO3/NiO microspheres with porous and rough surface have been prepared through a simple one-stop hydrothermal method. Interestingly, it is a surprise that the introduction of different amounts of WO3 plays a critical role in the growth and self-assembly of nanosheets and then the morphology of microsphere. Further gas sensing experiment demonstrates that the sensor based on porous microsphere possesses prominent performance towards 100 ppm ethanol at the optimal working temperature of 300 °C compared with that of rough microsphere. It is believed that the enhanced gas sensing properties benefit from the porous structure on the surface with abundant active sites and gas passages for sufficient gas adsorption and diffusion.
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