TiO2/CdS同轴异质结的制备及光催化性能研究

doi:10.3724/SP.J.1077.2013.12323

无机材料学报 ›› 2013, Vol. 28 ›› Issue (4): 431-435.DOI: 10.3724/SP.J.1077.2013.12323 CSTR: 32189.14.SP.J.1077.2013.12323

TiO₂/CdS同轴异质结的制备及光催化性能研究

蔡四龙, 宋平新, 张迎九, 王彩利, 张月萍, 安璐璐

(郑州大学物理工程学院, 材料物理重点实验室, 郑州 450052)

收稿日期:2012-05-16 修回日期:2012-07-12 出版日期:2013-04-10 网络出版日期:2013-03-20
作者简介:蔡四龙(1983–), 男, 硕士研究生. E-mail: caisilong@163.com

Fabrication of TiO₂/CdS Coaxial Heterojunction and Its Photocatalytic Properties

CAI Si-Long, SONG Ping-Xin, ZHANG Ying-Jiu, WANG Cai-Li, ZHANG Yue-Ping, AN Lu-Lu

( Key Laboratory of Materials Physics, Department of Physics and Engineering, Zhengzhou University, Zhengzhou 450052)

Received:2012-05-16 Revised:2012-07-12 Published:2013-04-10 Online:2013-03-20
About author:CAI Si-Long. E-mail: caisilong@163.com

摘要/Abstract

摘要：

本研究采用阳极氧化法在金属钛箔上制备TiO₂纳米管阵列, 并用直流电沉积在退火后的TiO₂纳米管内部填充CdS。用扫描电子显微镜(SEM)及电子能谱(EDS)、X射线衍射(XRD)对TiO₂/CdS异质结进行表征, 结果显示, TiO₂/CdS同轴核壳结构有序规整排列, 孔径大小均一, Cd、S两种元素化学配比接近1:1。450℃空气退火后的TiO₂是锐钛矿型, 沉积的CdS为六方相。对TiO₂纳米管和TiO₂/CdS异质结分别进行了紫外-可见吸收光谱和紫外光下光催化降解甲基橙染料的性能测试。结果表明, 复合后TiO₂的吸收边出现了明显的红移; TiO₂/CdS催化降解甲基橙的降解率最高达99.4%, 与纯TiO₂相比TiO₂/CdS的光催化活性明显提高。

关键词: 二氧化钛, 硫化镉, 异质结, 电沉积, 光催化

Abstract:

TiO₂ nanotube arrays on titanium sheet were prepared by anodized oxidation method and filled with CdS in the interior of the annealed TiO₂ nanotubes by direction current (DC) electrodeposition. The TiO₂/CdS heterojunctions were characterized through scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and X-Ray diffraction (XRD). The results show that TiO₂/CdS coaxial nanocables are orderly arrayed, their diameters are uniform and the chemical ratio of Cd and S is closed to 1:1. The TiO₂ annealed at 450℃ in air is anatase and the deposited CdS is hexagonal phase. UV-visible absorption spectroscopy and methyl orange dye by photocatalytic degradation under UV light of the pure TiO₂ nanotubes and TiO₂/CdS heterojunction are investigated. Compared with the pure TiO₂, TiO₂/CdS heterojunction has an obvious red-shift on the edge of TiO₂ absorption and their photocatalytic activity is obviously improved, with maximum degradation rate of methyl orange as 99.4%.

Key words: titanium dioxide, cadmium sulfide, heterojunction, electrodeposition, photocatalysis

中图分类号:

TB383

蔡四龙, 宋平新, 张迎九, 王彩利, 张月萍, 安璐璐. TiO₂/CdS同轴异质结的制备及光催化性能研究[J]. 无机材料学报, 2013, 28(4): 431-435.

CAI Si-Long, SONG Ping-Xin, ZHANG Ying-Jiu, WANG Cai-Li, ZHANG Yue-Ping, AN Lu-Lu. Fabrication of TiO₂/CdS Coaxial Heterojunction and Its Photocatalytic Properties[J]. Journal of Inorganic Materials, 2013, 28(4): 431-435.

图/表 7

图1 样品的SEM照片

Fig. 1 SEM images of samples

图2 电化学沉积CdS后TiO2纳米管阵列的EDS能谱图

Fig. 2 EDS spectrum of TiO2 nanotube arrays after electrochemical deposition of CdS

图3 样品的XRD图谱

Fig. 3 XRD patterns of the samples

图4 样品的紫外-可见漫反射光谱

Fig. 4 UV-Vis absorption spectra of (a) TiO2 and (b) TiO2/CdS

图5 甲基橙溶液随降解时间的吸收曲线

Fig. 5 Absorption cuve of methyl orange solution with degradation time

图6 CdS沉积时间对降解率的影响

Fig. 6 Effect of CdS deposition time on the degradation rate

图7 甲基橙质量浓度对降解率的影响

Fig. 7 Effect of methyl orange concentration on the degradation rate

参考文献 15

[1]	Lu C C, Huang Y S, Huang J W, et al. A macroporous TiO2 oxygen sensor fabricated using anodic aluminium oxide as an etching mask. Sensors, 2010, 10(1): 670-683.
[2]	Lu H F, Li F, Liu G, et al. Amorphous TiO2 nanotube arrays for low-temperature oxygen sensors. Nanotechnology, 2008, 19(40): 65-71.
[3]	Bai S L, Li H Y, Guan Y J, et al. The enhanced photocatalytic activity of CdS/TiO2 nanocomposites by controlling CdS dispersion on TiO2 nanotubes. Applied Surface Science, 2011, 257(15): 6406-6409.
[4]	Kharian S, Teymoori N, Khalilzadeh M A. Multi-wall carbon nanotubes and TiO2 as a sensor for electrocatalytic determination of epinephrinein the presence of p-chloranil as a mediator. Journal of Solid State Electrochemistry, 2011, 16(2): 563-568.
[5]	Luo X D, Liu P S, Nguyen T N T, et al. Photoluminescence blue-shift of CdSe nanoparticles caused by exchange of surface capping layer. J. Phys. Chem. C, 2011, 115: 20817-20823.
[6]	Ghows N, Entezari M H. Fast and easy synthesis of core-shell nanocrystal (CdS/TiO2) at low temperature by micro-emulsion under ultrasound. Ultrasonics Sonochemistry, 2011, 18(2): 629-634.
[7]	Hu Z S, Song C X, Wang D B, et al. Preparation and characterization of hollow spheres consisting of CdS/TiO2 composite. Rare Metal Materials Engineering, 2005, 34(1): 8-10.
[8]	Hsu M C, Leu I C, Sun Y M, et al. Fabrication of CdS@TiO2 coaxial composite nanocables arrays by liquid-phase deposition. Journal of Crystal Growth, 2005, 285(4): 642-648.
[9]	Lai Y K, Lin Z Q, Chen Z, et al. Fabrication of patterned CdS/TiO2 heterojunction by wettability template-assisted electrodeposition. Materials Letters, 2010, 64(11): 1309-1312.
[10]	Tachibana Y, Umekita K, Otsuka Y, et al. Charge recombination kinetics at an in situ chemical bath-deposited CdS/nanocrystalline TiO2 interface. J. Phys. Chem. C, 2009, 113(16): 6852-6858.
[11]	JuraSuk J, Li W, JaeSung L, et al. Fabrication of CdS/TiO2 nano-bulk composite photocatalysts for hydrogen production from aqueous H2S solution under visible light. Chem. Phys. Lett., 2006, 425(4/5/6): 278-282.
[12]	Chand R, Obuchi E, Katoh K, et al. Enhanced photocatalytic activity of TiO2/SiO2 by the influence of Cu-doping under reducing calcination atmosphere. Catalysis Communications, 2011, 13(1): 49-53.
[13]	薛峰, CdS修饰TiO2纳米管阵列的制备及光催化性能研究, 南京: 南京航空航天大学硕士论文, 2009.
[14]	Su C Y, Shao C L, Liu Y C. Electrospun nanofibers of TiO2/CdS heteroarchitectures with enhanced photocatalytic activity by visible light. Journal of Colloid and Interface Science, 2011, 359(1): 220-227.
[15]	Steven C, Hayden, Mostafa A, et al. TiO2 Nanotube/CdS hybrid electrodes: extraordinary enhancement in the inactivation of escherichia coli. Communications, 2010, 132(41): 14406-14408.

TiO₂/CdS同轴异质结的制备及光催化性能研究

Fabrication of TiO₂/CdS Coaxial Heterojunction and Its Photocatalytic Properties

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