CdS修饰TiO2纳米带制备及光催化降解有毒有机污染物

doi:10.7517/j.issn.1674-0475.2010.03.161

影像科学与光化学 ›› 2010, Vol. 28 ›› Issue (3): 161-172.DOI: 10.7517/j.issn.1674-0475.2010.03.161

• 研究论文 • 下一篇

CdS修饰TiO₂纳米带制备及光催化降解有毒有机污染物

刘君子, 王攀, 何燕, 邓安平, 李瑞萍, 黄应平

三峡大学, 三峡库区生态环境教育部工程研究中心, 湖北, 宜昌, 443002

收稿日期:2009-12-25 修回日期:2010-03-01 出版日期:2010-05-23 发布日期:2010-05-23
通讯作者: 黄应平,E-mail:chem_ctgu@126.com.
基金资助:
国家自然科学基金(20877048);国家重点基础研究发展计划(973)项目前期研究课题(2008CB417206);湖北省自然科学基金创新群体项目(2009CDA020)资助

Preparation of CdS-modified TiO₂ Nanoribbon and Photocatalytic Degradation of Toxic Organic Pollutants

LIU Jun-zi, WANG Pan, HE Yan, DENG An-ping, LI Rui-ping, HUANG Ying-ping

Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, Hubei, P. R. China

Received:2009-12-25 Revised:2010-03-01 Online:2010-05-23 Published:2010-05-23

摘要/Abstract

摘要： 以硫酸钛为原料,在210℃低温下,水热制备TiO₂纳米带.通过沉淀法用CdS修饰TiO₂纳米带表面,制得TiO₂@CdS复合光催化剂,采用XRD、TEM和反射紫外对其结构及光化学特性进行初步表征.以可见光(λ≥450 nm)光催化降解罗丹明B(Rhodamine B,RhB)、水杨酸(Salicylic Acid,SA)及2,4-二氯苯酚(2,4-Dichlorophenol,2,4-DCP)为探针反应,研究反应温度、介质和负载CdS对TiO₂@CdS结构性能的影响.结果表明,所制备的TiO₂纳米带分散性好.复合粉末由锐钛矿相TiO₂和立方相CdS组成.常温25℃中性介质中用CdS修饰的TiO₂的活性,在可见光照射下,为单纯TiO₂纳米带的29倍.同时,TiO₂也促进了CdS可见光光催化活性的提高.通过跟踪降解体系紫外-可见光谱(UV-vis)、红外光谱(FTIR)和总有机碳(TOC)测定,结果发现TiO₂@CdS/vis体系在pH 7.0时,对SA的降解率较TiO₂纳米带有显著地提高,反应15 h和21 h后,RhB和2,4-DCP的矿化率分别可达到47.8%和30.8%.

关键词: CdS, TiO₂纳米带, 光催化

Abstract: TiO₂ nanoribbon was synthesized by the hydrothermal method at 210℃ using titanium sulfate as the raw material.TiO₂@CdS composite photo-catalyst was synthesized by modifying TiO₂ surface with CdS through the precipitation method.The structure of TiO₂@CdS powders were characterized by X-ray diffraction (XRD),transmission electron microscope (TEM) and UV-Vis absorption spectral techniques.The photo-catalytic activity of TiO₂@CdS was studied using photocatalytic degradation of Rhodamine B,Salicylic Acid and 2,4-dichlorophenol (2,4-DCP) under visible light (λ≥450 nm) as the probe reactions.The effects of the reaction temperature,medium and CdS loading on the structural properties of TiO₂@CdS were investigated.The results showed that the prepared TiO₂ nanoribbon had good dispersivity.Composite nanocrystalline particle was composed of TiO₂ with anatase crystalline structure and CdS with zinc-blend crysatalline structure.At room temperature (25℃),the activity of TiO₂ decorated with CdS in neutral medium was enhanced by 29 times as compared with pure TiO₂ under the visible light irradiation.Therefore,the photo-activity of CdS was improved by TiO₂.In TiO₂@CdS/Vis system,the photodegradation of Salicylic Acid (SA) over TiO₂@CdS was much promoted compared with pure TiO₂ nanoribbon.The mineralized rates of Rhodamine B (RhB) and 2,4-dichlorophenol (2,4-DCP) reached 47.8% and 30.8% after 15 and 21 hours respectively at pH 7.0.

Key words: CdS, TiO₂ nanoribbon, photocatalyst

中图分类号:

O611
X703

刘君子, 王攀, 何燕, 邓安平, 李瑞萍, 黄应平. CdS修饰TiO₂纳米带制备及光催化降解有毒有机污染物[J]. 影像科学与光化学, 2010, 28(3): 161-172.

LIU Jun-zi, WANG Pan, HE Yan, DENG An-ping, LI Rui-ping, HUANG Ying-ping. Preparation of CdS-modified TiO₂ Nanoribbon and Photocatalytic Degradation of Toxic Organic Pollutants[J]. Imaging Science and Photochemistry, 2010, 28(3): 161-172.

参考文献

[1] Fang Y F,Huang Y P,Liu D F,Huang Y,Guo W,Daivd J.Photocatalytic degradation of the dye sulforhodamine-B:A comparative study of different light source[J].Environ.Sci.,2007,19:97-102.
[2] Ma J W,Zhang H B,Dong Z B,et al.The progress of study on preparation of nanometer TiO₂[J].Inorganic Chemicals Industry,2006,38(10):5-7.
[3] Zhang X W,Zhou M H,Lei L C.Preparation of photo-catalytic TiO₂ coatings of nano-sized particles on activated carbon by AP-MOCVD[J].Carbon,2005,43(8):1700-1708.
[4] Zhang X W,Zhou M H,Lei L C.Preparation of anatase TiO₂ supported on alumina by different metal organic chemical vapor deposition methods[J].Appl.Catal.A-Gen.,2005,282(1-2):285-293.
[5] Yang L,Zhang L D,Meng G M.Preparation and photoluminescence of highly ordered TiO₂ nanowires arrays[J].Appl.Phys.Lett.,2001,78:1125.
[6] Zhang X Y,Zhang L D,Chen W.Electrochemical fabrication of highly ordered semiconductor and metallic nanowire Arrays[J].Chem.Matter.,2001,13:2511.
[7] Zhang X W,Zhou M H,Lei L C.Preparation of an Ag-TiO₂ photo-catalyst coated on activated carbon by MOCVD[J].Matter.Chem.Phys.,2005,91(1):73-79.
[8] Wu L,Yu J C,Fu X Z.Characterization and photo-catalytic mechanism of nano-sized CdS coupled TiO₂ nano-crystals under visible light irradiation[J].J.Mol.Catal.A-Chem.,2006,244(1-2):25-32.
[9] 姚秉华,郑怀礼,杨丽芹,田萍,庞秀芬.CdS/TiO₂/漂珠复合光催化剂制备及其降解高效氯氰菊酯研究[J].光谱学与光谱分析,2007,27(5):1010-1014.Yao B H,Zhen H L,Yang L Q,Tian P,Pang X F.Studies on preparation of CdS/TiO₂/Float pearls coupled photocatalyst[J].Spectroscopy and Spectral Analysis,2007,27(5):1010-1014.
[10] So W W,Kim K J,Moon S J.Photo-production of hydrogen over the TiO₂@CdS nano-composite particulate films treated with TiCl4[J].Int.J.Hydrog.Energy,2004,29:229-234.
[11] 陈晓慧,柳丽芬,杨凤林,等.CdS/TiO₂光催化去除水体中氨氮的研究[J].感光科学与光化学(影像科学与光化学),2007,25(2):89-101.Chen X H,Liu L F,Yang F L,et al.Removing ammonia nitrogen from water using CdS/TiO₂ photocatalyst[J].Photographic Science and Photochemistry(Imaging Science and Photochemistry),2007,25(2):89-101.
[12] Guan G Q,Kida T,Kusakabe K,et al.Photocatalytic activity of CdS nanoparticles incorporated in titanium silicate molecular sieves of ETS-4 and ETS-10[J].Applied Catalysis A:General,2005,295:71-78.
[13] Huang C B,Wu C L,et al.Quantitative model for the surface-related electron transfer in CdS quantum dots[J].Chem.Res.Chinese Universities,2009,25(1):17-24.
[14] 董煜,赵远征,张怡娜.高效液相色谱法测定注射用赖氨匹林中的阿司匹林及游离水杨酸[J].色谱,2002,20(3):277-278.Dong Y,Zhao Y Z,Zhang Y N.Determination of aspirin and free salicylic acid in lysinipirine injection by high performance liquid chromatography[J].Chinese Journal of Chromatography,2002,20(3):277-278.
[15] 徐占霞,崔冠军,张敏,杨建军.新型CdS/TiO₂:纳米复合材料的制备及其可见光催化性能研究[J].影像科学与光化学,2008,26(6):489-498.Xu Z X,Cui G J,Zhang M,Yang J J.Preparation of the novel CdS/TiO₂ nanocomposites and its visible-light photocatalytic properties[J].Imaging Science and Photochemistry,2008,26(6):489-498.
[16] 费学宁,刘晓平,李莹,杜国银.半导体复合CdS/TiO₂催化剂改性及冷冻-光催化组合方法应用的初步研究[J].影像科学与光化学,2008,26(5):417-424.Fei X N,Liu X P,Li Y,Du G Y.Modified of compound semiconductor CdS/TiO₂ and wastewater treatment by combined freeze and photocatalysis[J].Imaging Science and Photochemistry,2008,26(5):417-424.
[17] Kim T K,Lee M,Lee S H,et al.Development of surface coationg technology of TiO₂ powder and improvement of photo-catalytic activity by surface modification[J].Thin Solid Films,2005,475:171-177.

CdS修饰TiO₂纳米带制备及光催化降解有毒有机污染物

Preparation of CdS-modified TiO₂ Nanoribbon and Photocatalytic Degradation of Toxic Organic Pollutants

PDF (PC)

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]	李玥, 李红英, 常玉雪, 周宏艳, 于翔. MoS₂/TiO₂纳米管阵列的一步沉积法制备及光电性能研究[J]. 影像科学与光化学, 2018, 36(4): 331-339.
[2]	李玥, 宋育泽, 陶雁忠, 高风仙, 汤宁. CdS/TiO₂复合纳米网的制备及光催化性能研究[J]. 影像科学与光化学, 2018, 36(3): 275-282.
[3]	李玲, 杜云舒, 王璇, 韩建, 王传义. 甲醛气体在ZnO表面光降解的机理研究[J]. 影像科学与光化学, 2018, 36(2): 171-177.
[4]	吴世康. 光催化中表面等离子体与半导体间的电子转移与能量转移[J]. 影像科学与光化学, 2018, 36(1): 1-13.
[5]	Samuel Lascio, 籍海峰. 磷纳米材料的光学、光电子和光催化应用[J]. 影像科学与光化学, 2017, 35(5): 587-602.
[6]	张庆宝, 刘强. 可见光催化需氧氧化在有机合成中的应用[J]. 影像科学与光化学, 2017, 35(5): 614-625.
[7]	桂梦茜, 俞洋, 朱诚逸, 刘宏芳, 王锋. 基于金属钴配合物的均相光催化还原二氧化碳研究进展[J]. 影像科学与光化学, 2017, 35(5): 649-657.
[8]	彭成云, 陈勇. 苝衍生物光催化氧化硫醚的研究[J]. 影像科学与光化学, 2017, 35(5): 675-685.
[9]	聂坤, 杨汉培, 孙慧华, 崔素珍, 吴俊明. 新型Fe掺杂钙钛矿型KMgF₃光催化剂制备及性能[J]. 影像科学与光化学, 2017, 35(1): 61-69.
[10]	朱哲欣, 叶美英. 光催化微反应器中水样光催化降解及Cd²⁺在线检测[J]. 影像科学与光化学, 2016, 34(5): 444-451.
[11]	张亚婷, 李可可, 任绍昭, 王黛玉, 周安宁, 邱介山. 金属改性煤基石墨烯复合材料的制备及其光催化性能[J]. 影像科学与光化学, 2016, 34(5): 475-481.
[12]	郭瑜桉, 张直峰, 申晨凡, 闫桂琴. 基于CdSe/ZnS量子点构建丝裂霉素荧光检测体系的研究[J]. 影像科学与光化学, 2016, 34(4): 346-354.
[13]	王勐, 夏静, 朱丹丹, 王磊, 孟祥敏. Fe掺杂ZnO空心微球的制备与光催化性能[J]. 影像科学与光化学, 2016, 34(3): 245-251.
[14]	蒋伟, 武祥. ZnS微米花的水热合成及光催化性质研究[J]. 影像科学与光化学, 2016, 34(3): 252-256.
[15]	黄奔, 李玄泽, 王磊, 夏静, 朱丹丹, 孟祥敏. 钼网衬底上大面积硅纳米线的制备及其光催化性能研究[J]. 影像科学与光化学, 2016, 34(3): 257-264.