CeO_2/ATP/MoS_2三维复合材料制备及光氧化汽油脱硫性能  

Preparation of CeO_2/ATP/MoS_2 Ternary Composite and Its Photocatalytic Oxidative Desulfurization Activity

作　　者：李霞章[1] 陆晓旺[2] 张作松 赵晓兵[2] NI Chaoying 姚超[1] 

机构地区：[1]常州大学石油化工学院,江苏常州213164 [2]常州大学材料科学与工程学院 [3]美国特拉华大学电镜中心,特拉华州纽瓦克19716

出　　处：《常州大学学报（自然科学版）》2016年第3期8-13,共6页Journal of Changzhou University：Natural Science Edition

基　　金：江苏省工业科技支撑计划(BE2014100);江苏省国际合作计划(BZ2015040)

摘　　要：采用微波液相法制备了CeO_2/凹凸棒石(ATP)/MoS_2三维复合材料,用X射线衍射、傅里叶变换红外光谱、紫外-可见漫反射光谱、原位透射电子显微镜等手段对其进行表征,以苯并噻吩为模拟含硫污染物探讨了CeO_2/ATP/MoS_2对模拟FCC汽油的光催化氧化脱硫活性,研究CeO_2和MoS_2质量比对光催化剂活性的影响。结果表明,ATP骨架与CeO_2和MoS_2形成稳定三维网络结构,能有效增加复合光催化剂的表面积,在空间上形成多渠道的电子传递通道,促进光生载流子的分离。模拟太阳光连续照射2h,当CeO_2与MoS_2质量比为4/10时,CeO_2/ATP/MoS_2复合材料对模拟汽油脱硫率高达92%。Ternary CeO_2/attapulgite（ATP）/MoS_2 composites were synthesized by microwave assisted synthetic method.The structures of the composites were characterized by X-ray diffraction,fourier-transform infrared,ultraviolet-visible diffuse reflectance and in situtransmission electron microscope.The photocatalytic activities of CeO_2/ATP/MoS_2 composites were investigated by degradating benzothiophene in model gasoline under solar irradiation.The effect of the mass ratio of CeO_2 to MoS_2 on photocatalytic activity was investigated.The results indicate that three-dimensional network structure is constructed by ATP skeleton,CeO_2 particles and MoS_2 nanosheet,which can effectively increase the surface area of the composites and promote the separation of electrons and holes by resulting electronic transmission channels of multichannel in space.The degradation rate of benzothiophene can reach 92% under 2h irradiation when the mass ratio of CeO_2 to g-C_3N_4 is 4/10.

关 键 词：凹凸棒石 MoS_2 CeO_2 光氧化脱硫 

分 类 号：TQ174[化学工程—陶瓷工业]