Facile fabrication of p-BiOI/n-Zn2SnO4 heterostructures with highly enhanced visible light photocatalytic performances
Facile fabrication of p-BiOI/n-Zn2SnO4 heterostructures with highly enhanced visible light photocatalytic performances
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DOI：
10.1016/j.materresbull.2014.04.023
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发表时间：
2014-07
影响因子：
5.4
通讯作者：
Houran Li;Zhao Jin;Honggang Sun;Liming Sun;Qingbo Li;Xian Zhao;Chunjiang Jia;Weiliu Fan
中科院分区：
文献类型：
--
作者：
Houran Li;Zhao Jin;Honggang Sun;Liming Sun;Qingbo Li;Xian Zhao;Chunjiang Jia;Weiliu Fan
通过将n型Zn 2SnO 4纳米粒子固定在p型BiOI片上，制备了新型BiOI/Zn 2SnO 4 p-n异质结光催化剂。采用X射线粉末衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线光电子能谱（XPS）、紫外-可见（UV-vis）漫反射光谱（DRS）、氮气吸附-脱附、光电化学等手段对催化剂的物化性能进行了研究。在可见光照射下，该催化剂对橙子（MO）的降解具有良好的光催化活性。BiOI/Zn 2SnO 4的光催化性能的提高不仅归因于能带电位的匹配，而且还归因于BiOI和Zn 2SnO 4纳米粒子之间的异质结。
New BiOI/Zn2SnO4p–n heterojunction photocatalysts were prepared by anchoring n-type Zn2SnO4nanoparticles on p-type BiOI plates. The physicochemical characteristics of the catalysts were studied by X-ray powder diffraction pattern (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectra (XPS), Ultraviolet visible (UV–vis) diffuse reflectance spectroscopy (DRS), nitrogen adsorption–desorption, and photoelectrochemistry measurement. The as-prepared catalysts exhibited excellent photocatalytic activity for the decomposition of methyl orange (MO) under visible light irradiation. The enhanced photocatalytic performance of BiOI/Zn2SnO4was not only attributed to the matched band potentials but also the interconnected heterojunction of BiOI and Zn2SnO4nanoparticles.