CeO2/TiO2光催化剂的制备及其可见光脱氮性能

doi:10.11944/j.issn.1000-0518.2015.07.140412

摘要/Abstract

摘要：

采用溶胶-凝胶和浸渍掺杂两步法合成了CeO₂/TiO₂光催化剂,并对催化剂的理化结构进行表征分析;以吡啶-正辛烷体系为模拟油品氮源,研究了该催化剂在可见光作用下的光催化脱氮行为,并探究了光催化脱氮的最佳反应条件。结果表明,掺杂的铈主要以CeO₂的形式存在,且增强了催化剂在可见光区的吸收;在可见光辐照150 min的条件下,铈的掺杂量质量分数为8%,所制备的CeO₂/TiO₂催化剂投入量为1.0 g/L时,模拟油品中吡啶的脱氮率高达76.45%。

关键词: 光催化剂, CeO2/TiO2, 模拟油品, 脱氮

Abstract:

CeO₂/TiO₂ photocatalyst was synthesized by sol-gel processing and dip-doping technique. Its physicochemical structure and properties were characterized. With pyridine n-octane system as the nitrogen source of simulative oil, the denitrification behavior of this photocatalyst under visible light was studied. The optimal photocatalysis reaction conditions were also explored. The doped cerium component in CeO₂ enhances the adsorption of catalyst in the visible light region. When the illumination time is 150 min under visible light, the amount of cerium doped is 8%, the dosage of the CeO₂/TiO₂ photocatalyst is 1.0 g/L, the denitrification percent of pyridine in the simulative oil reaches up to 76.45%.

Key words: photocatalyst, CeO2/TiO2, simulative oil, denitrification

中图分类号:

陈峰, 郑柳萍, 黄莹莹, 颜桂炀, 王颖. CeO₂/TiO₂光催化剂的制备及其可见光脱氮性能[J]. 应用化学, 2015, 32(7): 801-807.

CHEN Feng, ZHENG Liuping, HUANG Yingying, YAN Guiyang, WANG Ying. Preparation and Visible Light Denitrification Performance of CeO₂/TiO₂ Photocatalyst[J]. Chinese Journal of Applied Chemistry, 2015, 32(7): 801-807.

参考文献

[1]	Li F,Li X,Hou M,et al.Enhanced Photocatalytic Aactivity of Ce3+-TiO2 for 2-Mercaptobenzothiazole Degradation in Aqueous Suspension for Odour Control[J]. Appl Catal A:General,2005,285(1):181-189.
[2]	Ranjit K,Willner I,Bossmann S,et al.Lanthanide Oxide Doped Titanium Dioxide Photocatalysts:Effective Photocatalysts for the Enhanced Degradation of Salicylic Acid and t-Cinnamic Acid[J]. J Catal,2001,204(2):305-313.
[3]	Orera V,Merino R,Pena F. Ce3+-Ce4+ Conversion in Ceria-doped Zirconia Single Crystals Induced by Oxido-reduction Treatments[J]. Solid State Ionics,1994,72:224-231.
[4]	Zhu Z,He D. CO Hydrogenation to C4 Hydrocarbons over CeO2-TiO2 Catalysts[J]. Fuel,2008,87(10):2229-2235.
[5]	ZHENG Liuping,YAN Guiyang,WANG Cunbao,et al. Nonaggregated Visible Light Photocatalytic Reactor:CN,201320244136.8[P],2013-12-18(in Chinese). 郑柳萍,颜桂炀,王存宝,等. 非聚集式可见光光催化反应器:中国,201320244136.8[P],2013-12-18.
[6]	Huang Y,Tong Z Q,Wu B,et al.Low Temperature Selective Catalytic Reduction of NO by Ammonia over V2O5-CeO2/TiO2[J]. J Fuel Chem Technol,2008,36(5):616-620.
[7]	Gong L,Zou J,Zeng J,et al.Photocatalytic Degradation of Dicofol and Pyrethrum with Boric and Cerous Co-doped TiO2 under Light Irradiation[J]. Chinese J Chem,2009,27(1):88-92.
[8]	Tong T,Zhang J,Tian B,et al.Preparation of Ce-TiO2 Catalysts by Controlled Hydrolysis of Titanium Alkoxide Based on Esterification Reaction and Study on Its Photocatalytic Activity[J]. J Colloid Interface Sci,2007,315(1):382-8.
[9]	Shah S,Li W,Huang C P,et al.Study of Nd3+, Pd2+, Pt4+, and Fe3+ Dopant Effect on Photoreactivity of TiO2 Nanoparticles[J]. Proc Natl Acad Sci USA,2002,99(12):6482-6486.
[10]	Elidrissi B,Addou M,Regragui M,et al.Structural and Optical Properties of CeO2 Thin Films Prepared by Spray Pyrolysis[J]. Thin Solid Films,2000,379(1):23-27.
[11]	Liu Z,Guo B,Hong L,et al.Physicochemical and Photocatalytic Characterizations of TiO2/Pt Nanocomposites[J]. J Photochem photobiol A:Chem,2005,172(1):81-88.
[12]	Lin J,Yu J C. An Investigation on Photocatalytic Activities of Mixed TiO2 Rare Earth Oxides for the Oxidation of Acetone in Air[J]. J Photochem photobiol A:Chem,1998,116(1):63-67.
[13]	Lin J,Lin Y,Liu P,et al.Hot-fluid Annealing for Crystalline Titanium Dioxide Nanoparticles in Stable Suspension[J]. J Am Chem Soc,2002,124(38):11514-11518.
[14]	Wu J,Ma H,Xu X,et al.Mycorrhizas Alter Nitrogen Acquisition by the Terrestrial Orchid Cymbidium Goeringii[J]. Ann Botany,2013,111(6):1181-1187.
[15]	Chen L,Li J,Ge M. Promotional Effect of Ce-doped V2O5-WO3/TiO2 with Low Vanadium Loadings for Selective Catalytic Reduction of NOx by NH3[J]. J Phys Chem C,2009,113(50):21177-21184.
[16]	Xia Y,Dai H,Zhang L,et al.Ultrasound-assisted Nanocasting Fabrication and Excellent Catalytic Performance of Three-dimensionally Ordered Mesoporous Chromia for the Combustion of Formaldehyde, Acetone, and Methanol[J]. Appl Catal B:Environ,2010,100(1):229-237.
[17]	Fang J,Bi X,Si D,et al.Spectroscopic Studies of Interfacial Structures of CeO2-TiO2 Mixed Oxides[J]. Appl Surf Sci,2007,253(22):8952-8961.
[18]	Mohammadi M,Fray D. Nanostructured TiO2-CeO2 Mixed Oxides by an Aqueous Sol-gel Process:Effect of Ce∶Ti Molar Ratio on Physical and Sensing Properties[J]. Sens Actuators B:Chem,2010,150(2):631-640.
[19]	Lee B H,Nakayama T,Tokoi Y,et al.Synthesis of CeO2/TiO2 Nanoparticles by Laser Ablation of Ti Target in Cerium(Ⅲ) Nitrate Hexahydrate(Ce(NO3)3·6H2O) Aqueous Solution[J]. J Alloy Compd,2011,509(4):1231-1235.

CeO₂/TiO₂光催化剂的制备及其可见光脱氮性能

Preparation and Visible Light Denitrification Performance of CeO₂/TiO₂ Photocatalyst

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	周玉凤, 周川巍, 胡桐泽, 段展鹏, 王颢潼, 石淑云. Fe/V-Sb₂O₃复合材料的构筑及光催化降解医药废水[J]. 应用化学, 2022, 39(10): 1572-1578.
[2]	张媛, 徐嘉鑫, 邓洪权, 蒋琪英. Gd³⁺掺杂ZnO的制备及其性能[J]. 应用化学, 2020, 37(3): 340-349.
[3]	李佳祁, 付大友, 袁东, 徐菁. 锌镁铝类水滑石负载碘氧化铋的制备与表征[J]. 应用化学, 2019, 36(1): 83-90.
[4]	笪祖林, 赵勇, 施伟东. Bi₄V₂O₁₁/石墨烯异质结光催化剂的制备及其在降解抗体污染物中应用[J]. 应用化学, 2018, 35(8): 946-955.
[5]	付大卫, 谢汝义, 张琳萍, 徐红, 钟毅, 隋晓锋, 毛志平. 空心球状碘氧化铋的制备及其对染料的吸附降解性能[J]. 应用化学, 2017, 34(5): 590-596.
[6]	李捷, 刘益林, 邓佑林, 王文新, 王硕文, 李增增, 唐石. 可见光诱导烯烃环化合成二氟烷基化异喹啉二酮[J]. 应用化学, 2016, 33(6): 677-684.
[7]	史建建, 刘小明, 唐星华, 李帅龙. 新型等离子光催化剂纳米金-钛酸锌复合物的制备与光解水制氢性能[J]. 应用化学, 2016, 33(5): 583-590.
[8]	于宗龙, 贾春晓, 路鑫, 韩海港, 辛炳炜. 离子液体@TiO₂纳米复合材料的制备及其光催化性能[J]. 应用化学, 2016, 33(4): 459-465.
[9]	邹晓梅, 陈艳, 朱兴旺, 刘高鹏, 郭心玮, 雷琴, 柯小雪, 李帅星, 华英杰, 王崇太. Keggin型铬取代的磷钨杂多阴离子/二氧化钛纳米膜光催化剂的制备及可见光催化性能[J]. 应用化学, 2016, 33(3): 320-329.
[10]	陈峰,黄莹莹,颜桂炀,樊海梅,黄仁昆. 氧化铜/氧化锌/3A分子筛光催化剂的制备及其可见光脱氮性能[J]. 应用化学, 2015, 32(9): 1040-1047.
[11]	李梦婷, 刘海城, 曾星, 徐孝南, 邹晓梅, 华英杰, 王崇太. Keggin型铬取代杂多阴离子/D301R可见光催化性能[J]. 应用化学, 2014, 31(08): 965-970.
[12]	曾薇, 陈甫雪. 自由基三氟甲基化反应进展[J]. 应用化学, 2014, 31(06): 627-641.
[13]	孙婷婷, 李文亮, 谢志刚, 景遐斌. 基于交联聚合物的新型非均相光催化剂的制备与应用[J]. 应用化学, 2014, 31(05): 548-552.
[14]	王娟, 祁晓婷, 李子颖, 何福兰, 朱文华, 郭建. 铀酰杂化超分子化合物的合成、结构、电化学、荧光及光催化性质[J]. 应用化学, 2014, 31(02): 193-199.
[15]	敏世雄, 王芳, 魏立强, 王永生, 安红钢, 吴冬青. Fe³⁺掺杂TiO2/凹凸棒复合光催化剂的制备和光催化活性[J]. 应用化学, 2010, 27(06): 700-704.