Enhanced Sensing Ability of Brush-Like Fe2O3-ZnO Nanostructures towards NO2 Gas via Manipulating Material Synergistic Effect

Brush-like α-Fe₂O₃–ZnO heterostructures were synthesized through a sputtering ZnO seed-assisted hydrothermal growth method. The resulting heterostructures consisted of α-Fe₂O₃ rod templates and ZnO branched crystals with an average diameter of approximately 12 nm and length of 25 nm. The gas-sensing results demonstrated that the α-Fe₂O₃–ZnO heterostructure-based sensor exhibited excellent sensitivity, selectivity, and stability toward low-concentration NO₂ gas at an optimal temperature of 300 °C. The α-Fe₂O₃–ZnO sensor, in particular, demonstrated substantially higher sensitivity compared with pristine α-Fe₂O₃, along with faster response and recovery speeds under similar test conditions. An appropriate material synergic effect accounts for the considerable enhancement in the NO₂ gas-sensing performance of the α-Fe₂O₃–ZnO heterostructures.     

职业院校是高技能人才培养的主渠道

以创办唐山工业职业技术学院的实践经验为依据，阐述了职业院校在国家重点技校带动战略涌现出的示范校群体中，将成为高级技能紧缺人才培养的载体，成为培养复合型高技能人才的主渠道。