期刊论文

Li, Hai-bin

英文

中国有色金属学报(英文版)

1003-6326

2017

27

4

868-875

10.1016/S1003-6326(17)60102-X

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51102025]; Natural Science Foundation of Hunan Province, ChinaNatural Science Foundation of Hunan Province [14JJ7040]; China Torch Program [2014GH561172]

本校为第一且通讯机构

Fe-doped BiVO_4 with hierarchical flower-like structure was prepared via a hydrothermal method using sodium dodecyl benzene sulfonate (SDBS) as structure directing agent. X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), high resolution transmission electron microscope (HRTEM), X-ray photoelectron spectroscopy (XPS) and UV-Vis were applied for characterization of the as-prepared samples. The formation mechanism of flower-like structure was proposed based on the evolution of morphology as a function of hydrothermal time. Fe-doped into substitut...

以Bi(NO_3)_3、Na_3VO_4和Fe(NO_3)_3为原料,以十二烷基苯环酸钠为结构导向剂,采用水热法制备了铁掺杂BiVO_4。利用XRD、SEM、TEM、HRTEM以及紫外-可见漫反射光谱(UV-Vis)对样品进行结构、形貌及光吸收性能分析。结果表明:铁掺杂BiVO_4具有由纳米片组装而成的多层级花状结构。SDBS在BiVO_4(100)晶面的选择性吸附是花状结构形成的关键原因。适量铁离子进入BiVO_4晶格后,导致BiVO_4发生晶格畸变,加大了BiVO_4局域结构的变形,形成了氧空位,并缩小了BiVO_4的带隙,从而促进BiVO_4光生电子和空穴的分离,拓宽BiVO_4的可见光吸收范围,有效提高BiVO_4的光催化活性。当铁掺杂浓度为2.5%时,样品对甲基蓝的光...