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钒掺杂磷酸铋/蒙脱石复合材料的制备及可见光催化脱硫性能
作者: style="font-size: 13.3333px ">李飞虹1 李霞章1 陆晓旺1 魏科年1  超1 夏建文2 
单位:1. 常州大学 江苏省先进催化与绿色制造协同创新中心 江苏 常州 213164 2. 江苏省华源矿业有限公司 江苏 盱眙 211700 
关键词:蒙脱石 磷酸铋 固溶 异质结 光催化脱硫 
分类号:TB332
出版年,卷(期):页码:2018,46(2):275-280
DOI:
摘要:

采用水热法制备了钒掺杂磷酸铋/蒙脱石(BiP1–xVxO4/MMT)复合材料,通过X射线衍射、透射电子显微镜、Fourier变换红外光谱和紫外可见吸收光谱表征复合材料的结构和组成、形态特征,并以其为催化剂进行光催化脱硫,考察了不同掺杂摩尔比x对复合材料的光催化脱硫性能的影响。结果表明:MMT的加入避免了活性组分的团聚,同时表面负载的BiP1–xVxO4固溶相与BiVO4析出相可形成紧密结合的异质结,提高了可见光的利用率,促进了光生电子-空穴对的分离。当x=0.6时,可见光照射3 h,BiP1–xVxO4/MMT复合材料对模拟汽油的脱硫率可达97%。

Vanadium doped bismuth phosphate/montmorillonite (BiP1–xVxPO4/MMT) nanocomposites were synthesized by a hydrothermal method. The structure and composition and morphology of the nanocomposites were characterized by X-ray diffraction, transmission electron microscopy, Fourier-transform infrared spectroscopy and ultraviolet-visible diffuse reflectance, respectively. The photocatalytic desulfurization was performed by using the prepared nanocomposite as a catalyst. The effect of doping molar faction x on the photocatalytic desulfurization of the nanocomposite was investigated. The results indicate that the introduction of MMT can eliminate the aggregation of nanoparticles. The coherent heterostructure formed by BiP1–xVxO4 and BiVO4 enhances the utilization of visible light and improves the separation of photogenerated electron-hole pairs. The desulfurization rate of modal oil can reach 97% under the visible light irradiation for 3 h when the molar faction x is 0.6.

基金项目:
国家自然科学基金项目(51674043, 51702026);江苏省科技支撑计划(BE2014100)项目。
作者简介:
李飞虹(1992—),女,硕士研究生。
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