网状纳米结构 α‐Fe 2 O3 薄膜的电喷雾制备

采用自建的电喷雾装置, 以浓度为10^-6mol/L的Fe(NO₃)₃和HAuCl₄混合溶液为前驱液, 在FTO(掺杂F的SiO₂玻璃)上沉积网状纳米结构的α-Fe₂O₃薄膜， 并分别用X射线衍射（XRD）、 Raman光谱、 扫描电子显微镜（SEM）、 能量色散X射线荧光光谱仪（EDX）、 X射线光电子能谱分析（XPS）和气敏测试对所得薄膜的组成、 结构和性能进行表征. 结果表明： 所得网状纳米结构由α-Fe₂O₃纳米粒子堆积而成； 喷雾过程中氯金酸的浓度和沉积时间对网状结构的形貌具有调控作用； 电喷雾法具有原料消耗少、 产物分散度高等优点.

Electrospray Preparation of α-Fe2O3 Film with Mesh Nanostructures

α-Fe₂O₃ films with meshy nanostructures were deposited via a self built electrospray equipment on FTO substrates. Mixed solution of Fe(NO₃)₃ and HAuCl₄ was used as precursor with the concentration of 10^-6 mol/L. Composition, structure, morphology and acetone sensitivity were characterized by X ray diffraction （XRD）, Raman spectrum, scanning electron microscope （SEM）, energy dispersive X ray fluoresence spectrometer （EDX）, X ray photoelectron spectroscopy （XPS） and gas sensitive test. The results show that the films are composed of the accumulated α-Fe₂O₃ nanoparticles. The concentration of the chloroauric acid and deposition time have a regulatory effect on the morphology of the mesh structure in the spray process. Therefore, electrospray method has the advantages of less raw material consumption and high dispersion of product.