化工新型材料

化工新型材料 ›› 2021, Vol. 49 ›› Issue (2) : 200-203. DOI: 10.19817/j.cnki.issn 1006-3536.2021.02.046

科学研究

铜修饰钒酸铋/膨润土复合材料的制备及可见光催化脱硫性能研究

作者信息 +

Preparation and characterization of Cu-BiVO₄/BTT nanocomposite for visible light photocatalytic desulfurization

Liu Wei, Tian Yongsheng, Cui Jiawei, Wang Guanghui

Author information +

文章历史 +

Received		Published
2019-10-24		2021-02-20
Issue Date	Revised Date
2021-03-03	2019-10-24

PDF

摘要

采用水热法制备了铜修饰钒酸铋/膨润土(Cu-BiVO₄/BTT)复合材料,借助X射线衍射(XRD)、扫描电子显微镜(SEM)、X射线光电子能谱(XPS)和紫外-可见漫反射吸收光谱(DRS)对其进行表征。XRD分析显示,所制备的催化剂中BiVO₄均保持单斜结构,SEM结果证实了钒酸铋负载到了膨润土上,XPS结果显示Cu元素以CuO形式存在于催化剂表面,DRS结果显示复合材料在可见光区域的吸收增强。研究表明,当Cu与Bi的摩尔比为1.2时,复合材料光催化活性最高,经可见光照射3h,对模型汽油脱硫率达91%。

Abstract

Copper modified bismuth vanadate/bentonite(Cu-BiVO₄/BTT) nanocomposites were hydrothermally synthesized,and characterized by X-ray diffraction(XRD),scanning electron microscopy (SEM),X-ray photoelectron spectroscopy (XPS),and UV-Vis diffuse reflectance spectroscopy (DRS).XRD showed that all the photocatalysts had the same single monoclinic sheelite structure.SEM results confirmed that BiVO₄ was loaded to BTT.XPS results shown that Cu existed on the surface of the BiVO₄ catalysts as their stable oxide cation species CuO.DRS results shown the absorption of nanocomposites was enhanced in the visible region.The highest desulfurization rate of model oil can reach 91% under the visible light irradiation for 3 h when the molar ratio of Cu to Bi was equal to 1.2.

关键词

钒酸铋 / 膨润土 / 可见光 / 光催化脱硫

Key words

bismuth vanadate / bentonite / visible light / photocatalytic desulfurization

引用本文

引用格式 ▾

铜修饰钒酸铋/膨润土复合材料的制备及可见光催化脱硫性能研究[J]. 化工新型材料, 2021, 49(2): 200-203 DOI:10.19817/j.cnki.issn 1006-3536.2021.02.046

登录浏览全文

4963

注册一个新账户忘记密码

参考文献

原文顺序 | 出版日期 | 本文引用

[1] Leng K Y,Sun Y Y,Zhang X,et al.Ti-modified hierarchical mordenite as highly active catalyst for oxidative desulfurization of dibenzothiophene[J].Fuel,2016,174:9-16.
[2] Yu F L,Liu C Y,Yuan B,et al.Energy-efficient extractive desulfurization of gasoline by polyether-based ionic liquids[J].Fuel,2016,177:39-45.
[3] Rahma W,Mjalli F,Al-Wahaibi T,et al.Polymeric-based deep eutectic solvents for effective extractive desulfurization of liquid fuel at ambient conditions[J].Chem Eng Res Des,2017,120:271-283.
[4] Tnag M X,Zhou L G,Du M X,et al.A novel reactive adsorption desulfurization Ni/MnO adsorbent and its hydrodesulfurization ability compared with Ni/ZnO[J].Catal Commun,2015,61:37-40.
[5] Jiang X,Li H,Zhu W,et al.Deep desulfurization of fuels catalyzed by surfactant-type decatungstates using H₂O₂ as oxidant[J].Fuel,2009,88(3):431-436.
[6] Zhang L,Fu W Q,Yu Q Y,et al.Ni₂P clusters on zeolite nanosheet assemblies with high activity and good stability in the hydrodesulfurization of 4,6-dimethldibenzothiophene[J].J Catal,2016,338:210-221.
[7] 陈颖,毛贝贝,李金莲,等.光催化脱硫及组合技术研究进展[J].化学通报,2010,73(5):424-430.
[8] 张进,朱媛,李一清.膨润土负载BiVO₄复合材料的制备及可见光催化性能[J].化工新型材料,2015(12):70-72.
[9] Gao X,Fu F,Lü L,et al.Preparation of Ag-BiVO₄ photocatalyst and its application in treatment of phenol-containing wastewater[J].Speciality Petrochemicals,2012,29(1):30-34.
[10] Malathi A,Madhavan J,Ashokkumar M,et al.A review on BiVO₄,photocatalyst:activity enhancement methods for solar photocatalytic applications[J].Applied Catalysis A:General,2018,555(5):47-74.
[11] 张爱平,张进治.Cu/BiVO₄复合光催化剂的制备及可见光催化活性[J].物理化学学报,2010,26(5):159-164.
[12] 李飞虹,李霞章,陆晓旺,等.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[J].硅酸盐学报,2018(2):275-280.
[13] Sohrabnezhad S,Pourahmad A,Salavatiyan T.CuO-MMT nanocomposite:effective photocatalyst for the discoloration of methylene blue in the absence of H₂O₂[J].Applied Physics A,2016,122(2):111.
[14] Lu N,Zhao Y,Liu H,et al.Design of polyoxometallate-titania composite film (H₃PW₁₂O₄₀/TiO₂) for the degradation of an aqueous dye Rhodamine B under the simulated sunlight irradiation[J].Journal of Hazardous Materials,2012,199(15):1-8.
[15] Yu C,Yang K,Yu J,et al.Fast fabrication of Co₃O₄ and CuO/BiVO₄ composite photocatalysts with high crystallinity and enhanced photocatalytic activity via ultrasound irradiation[J].Cheminform,2011,509(13):4547-4552.