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  

Preparation of Vanadium Doped Bismuth Phosphate/Montmoril lonite Nanocomposites for Visible Light Photocatalytic Desulfurization

作　　者：李飞虹 李霞章[1] 陆晓旺[1] 魏科年[1] 姚超[1] 夏建文 LI Feihong1, LI Xiazhang1, LU Xiaowang1, WEI Kenian2, YA O Chao1, XIA Jianwen2(1. Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, Jiangsu, China; 2. Jiangsu Huayuan Mine Co., Ltd, Xuyi 211700, Jiangsu, Chin)

机构地区：[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

出　　处：《硅酸盐学报》2018年第2期275-280,共6页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金项目(51674043,51702026);江苏省科技支撑计划(BE2014100)项目

摘　　要：采用水热法制备了钒掺杂磷酸铋/蒙脱石（BiP_（1–x）V_xO_4/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BiP_（1–x）V_xO_4固溶相与BiVO_4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,BiP_（1–x）V_xO_4/MMT复合材料对模拟汽油的脱硫率可达97%。Vanadium doped bismuth phosphate/montmorillonite（BiP_（1–x）V_xPO_4/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 BiP_（1–x）V_xO_4 and BiVO_4 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.

关 键 词：蒙脱石 磷酸铋 固溶 异质结 光催化脱硫 

分 类 号：TB332[一般工业技术—材料科学与工程]