Generalized One-Pot Synthesis, Characterization, and Photocatalytic Activity of Hierarchical BiOX (X = Cl, Br, I) Nanoplate Microspheres
Generalized One-Pot Synthesis, Characterization, and Photocatalytic Activity of Hierarchical BiOX (X = Cl, Br, I) Nanoplate Microspheres
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DOI：
10.1021/jp077471t
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发表时间：
2008-01
影响因子：
3.7
通讯作者：
Xi Zhang;Zhihui Ai;Falong Jia;Lizhi Zhang
中科院分区：
文献类型：
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作者：
Xi Zhang;Zhihui Ai;Falong Jia;Lizhi Zhang
以乙二醇为溶剂，采用溶剂热一锅法制备BiOX（X = Cl，Br，I）粉体。通过X射线粉末衍射、扫描电子显微镜、透射电子显微镜、高分辨率透射电子显微镜、紫外维斯漫反射光谱和氮吸附对所制备的BiOX粉末进行了表征。所得的BiOX样品是相纯的，并且是由纳米片组成的分级微球。所制备的粉末的带隙估计为约3.22，2.64，和1.77 eV的BiOCl，BiOBr，和BiOI，分别。在表征结果的基础上，我们提出了一个可能的过程中生长的分级BiOX纳米片微球。此外，我们评估了它们的光催化活性对甲基橙子的降解，并将它们与TiO 2（Degussa，P25）在紫外-维斯光照射下和C掺杂的TiO 2在可见光（λ > 420 nm）照射下进行比较。据了解，Al…
A general one-pot solvothermal process was explored to prepare BiOX (X = Cl, Br, I) powders by employing ethylene glycol as the solvent. The as-prepared BiOX powders were characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, UV−vis diffuse reflectance spectroscopy, and nitrogen sorption. The resulting BiOX samples were phase-pure and of hierarchical microspheres consisting of nanoplates. The band gaps of the as-prepared powders were estimated to about 3.22, 2.64, and 1.77 eV for BiOCl, BiOBr, and BiOI, respectively. On the basis of characterization results, we proposed a possible process for the growth of hierarchical BiOX nanoplate microspheres. Moreover, we evaluated their photocatalytic activities on the degradation of methyl orange and compared them with TiO2 (Degussa, P25) under UV−vis light irradiation and C-doped TiO2 under visible light (λ > 420 nm) irradiation, respectively. It was found that al...