The porous WO₃ films and hierarchical WO₃ porous/nanowires films were fabricated by the colloidal template method and solvothermal method, and Pt catalyst was loaded on films by sputtering. The porous WO₃ films exhibited uniform and ordered porous structure with pore diameter of ∼1020, ∼810 and ∼360 nm. Morphology of hierarchical WO₃ films showed that many nanowires with diameter of 20 ∼ 30 nm grew on the pore wall. The hierarchical Pt/WO₃ films exhibited shorter response time to 4% H₂ gas (24.8 s) at room temperature, about a third of that of porous Pt/WO₃ films. And T% of hierarchical films can decrease by 65.1% at 1500 nm wavelength, twice higher than porous films (28.6%). This hierarchical structure combines the adjustable pore size and high aspect ratio nanowires, which provides a new reference for the structure design of WO₃ based sensors.

采用胶体模板法和溶剂热法制备了多孔WO ₃薄膜和分级WO ₃多孔/纳米线薄膜，并通过溅射法将Pt催化剂负载在薄膜上。多孔WO ₃薄膜表现出均匀有序的多孔结构，孔径分别为~1020、~810和~360 nm。分层WO ₃薄膜的形貌表明，许多直径为20 ∼ 30 nm 的纳米线生长在孔壁上。分级 Pt/WO ₃薄膜在室温下对 4% H ₂气体的响应时间更短（24.8 s），约为多孔 Pt/WO _{3的三分之一}电影。而分层薄膜的T%在1500 nm波长下可降低65.1%，是多孔薄膜（28.6%）的两倍。这种分层结构结合了可调孔径和高纵横比纳米线，为基于WO ₃的传感器的结构设计提供了新的参考。