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首页> 外文会议>Frontier of nanoscience and technology >Synthesis of Nanocrystalline LaFeO_3 by precipitation and its Visible-Light Photocatalytic Activity
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Synthesis of Nanocrystalline LaFeO_3 by precipitation and its Visible-Light Photocatalytic Activity

机译：沉淀法合成LaFeO_3纳米晶及其可见光催化活性

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摘要

The LaFeO_3 nanoparticle was synthesized using Fe(NO_3)_3 and La(NO_3)_3 as starting materials by homogeneous precipitation method. The as-prepared LaFeO_3 product was characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-visible diffuse reflectance spectroscopy (DRS). XRD and SEM demonstrate the successful synthesis of single phase perovskite LaFeO_3 and with 60-80 nm particle size. It was found that the as-prepared LaFeO_3 shows strong visible-light absorption with absorption onset of 532 nm, indicating a narrow optical band gap of 2.33 eV. Furthermore, the as-prepared LaFeO_3 shows high visible-light photocatalytic activity for decomposition of methylene blue in comparison with the commercial Degussa P25.
机译：以Fe（NO_3）_3和La（NO_3）_3为起始原料，通过均相沉淀法合成了LaFeO_3纳米粒子。通过粉末X射线衍射（XRD），扫描电子显微镜（SEM）和紫外可见漫反射光谱法（DRS）表征制备的LaFeO_3产物。 XRD和SEM表明成功合成了单相钙钛矿LaFeO_3，粒径为60-80 nm。发现所制备的LaFeO_3显示出强烈的可见光吸收，吸收开始为532nm，表明窄的光学带隙为2.33eV。此外，与市售的Degussa P25相比，如此制备的LaFeO_3显示出高的可见光光催化亚甲蓝的分解活性。

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