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采用溶剂热法以WCl6作为前体合成出了一维和二维的钨氧化物纳米结构,研究了反应溶剂和前体浓度对钨氧化物物相和形貌的影响并评价了各种钨氧化物纳米结构对NO2气体的敏感性能。XRD、SEM、TEM和XPS的表征结果表明,通过改变溶剂和调整WCl6浓度,可分别获得单斜的W18O49纳米棒、W18O49纳米线和WO3纳米片结构。气敏性能测试结果表明,钨氧化物纳米结构对NO2气体表现出良好的可逆性,与W18O49纳米棒和WO3纳米片相比,W18O49纳米线对NO2具有更高的灵敏度。
One-dimensional and two-dimensional tungsten oxide nanostructures were synthesized by solvothermal method using WCl6 as precursor. The effects of reaction solvent and precursor concentration on the phase and morphology of tungsten oxide were investigated and the effects of various tungsten oxides Sensitivity of nanostructures to NO2 gas. The XRD, SEM, TEM and XPS characterization results show that monoclinic W18O49 nanorods, W18O49 nanowires and WO3 nanosheets can be obtained by changing the solvent and adjusting the concentration of WCl6. Gas sensing test results show that tungsten oxide nanostructures showed good reversibility for NO2 gas, and W18O49 nanowires have higher sensitivity to NO2 than W18O49 nanorods and WO3 nanosheets.