Paper Titles

Preface and Committees

Synthesis of CdSe Quantum-Dots-Sensitized TiO₂Nanocomposites with Visible-Light Photocatalytic Activity
p.3

Preparation and Properties of Brij97-Based Curcumin-Encapsulated O/W Microemulsions
p.10

Synthesis and Luminescence Properties of Pomponlike CaMoO₄:Eu³⁺ Red Phosphors by Hydrothermal Method
p.18

The Growth and Optical Properties of Al-Doped ZnO Nanofibers Using PVP Nanofibers as Templates by Atom Layer Deposition
p.23

Influences of Preparation Process on the Orientation and Properties of PZT Piezoelectric Thick Film Generation Materials
p.29

Preparation of Silica Microspheres Coated by Nano-ZrO₂
p.36

Preparation and Photocatalytic Activity of Fe³⁺-TiO₂-CTAB Nanostructured Films
p.41

One-Step Synthesis of Aqueous Graphene Dispersion Stabilized by Sodium Dodecylbenzene Sulfonate
p.46

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 924Synthesis of CdSe Quantum-Dots-Sensitized TiO2...

Synthesis of CdSe Quantum-Dots-Sensitized TiO₂Nanocomposites with Visible-Light Photocatalytic Activity

Article Preview

Abstract:

CdSe Quantum Dots (QDs) sensitized TiO₂ photocatylysts were synthesized by a facile sol-gel method at room temperature. The effects of CdSe QDs concentration on the properties of the photocatalysts were studied by XRD, BET, SEM, UV/vis. The photocatalytic performance was investigated by degrading methylene blue (MB) under halogen-tungsten lamp irradiation. The results revealed that the catalysts doped with CdSe QDs show large surface area, small crystal size and narrow band gap. The catalysts doped with 0.05% CdSe QDs possessed the best activity, and the degradation efficiency of methylene blue (MB) is up to 99.2% within 180 min.

You might also be interested in these eBooks

Frontiers in Micro-Nano Science and Technology

Info:

Periodical:

Advanced Materials Research (Volume 924)

Pages:

3-9

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.924.3

Citation:

Cite this paper

Online since:

April 2014

Authors:

Yong Shi*, Jun Ke, Qi Dong Zhao, Xin Yong Li, Nan Zheng, Fang Hong Xue

Keywords:

CdSe Quantum Dots, Photocatalysis, TiO₂ Modification

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

[1] Chong MengNan, Jin Bo, Chow Christopher W. K, etc. Recent developments in photocatalytic water treatment technology: A review [J]. Water Research. 2010, 44(10): 2997-3027.

DOI: 10.1016/j.watres.2010.02.039

[2] Tong Hua, Ouyang Shuxin, Bi Yingpu, etc. Nano-photocatalytic Materials: Possibilities and Challenges [J]. Advanced Materials. 2012, 24(2): 229-251.

DOI: 10.1002/adma.201102752

[3] Yu Jiaguo, Fan Jiajie, Lv Kangle. Anatase TiO2 nanosheets with exposed (001) facets: improved photoelectric conversion efficiency in dye-sensitized solar cells [J]. Nanoscale. 2010, 2(10): 2144-2149.

DOI: 10.1039/c0nr00427h

[4] Dozzi Maria Vittoria, Selli Elena. Effects of phase composition and surface area on the photocatalytic paths on fluorinated titania. Catalysis Today [J]. 2013, 206: 26-31.

DOI: 10.1016/j.cattod.2012.03.029

[5] Hou Yang, Li Xinyong, Zhao Qidong, etc. Electrochemical Method for Synthesis of a ZnFe2O4/TiO2 Composite Nanotube Array Modified Electrode with Enhanced Photoelectrochemical Activity [J]. Advanced Functional Materials. 2010, 20(13): 2165-2174.

DOI: 10.1002/adfm.200902390

[6] Teng Wei, Li Xinyong, Zhao Qidong, etc. In situ capture of active species and oxidation mechanism of RhB and MB dyes over sunlight-driven Ag/Ag3PO4 plasmonic nanocatalyst [J]. Applied Catalysis B. 2012, 125: 538-545.

DOI: 10.1016/j.apcatb.2012.05.043

[7] Hou Yang, Li Xinyong, Zhao Qidong, etc. TiO2 nanotube/Ag-AgBr three-component nanojunction for efficient photoconversion [J]. Journal of Material Chemistry. 2011; 21(44): 18067-18076.

DOI: 10.1039/c1jm12788h

[8] Li Xin, Huang Yuping, Chen Jian-Feng, etc. Visible light-driven binary dyes synergic degradation by iodine-doped TiO2 nanocrystal film [J]. Catalysis Communications. 2012, 20: 94-98.

DOI: 10.1016/j.catcom.2012.01.006

[9] Hamal Dambar B., Klabunde Kenneth J. Synthesis, characterization, and visible light activity of new nanoparticle photocatalysts based on silver, carbon, and sulfur-doped TiO2 [J]. Journal of Colloid and Interface Science. 2007, 311(2): 514-522.

DOI: 10.1016/j.jcis.2007.03.001

[10] Hou Yang, Li Xinyong, Zou Xuejun, etc. Photoeletrocatalytic Activity of a Cu2O-Loaded Self-Organized Highly Oriented TiO2 Nanotube Array Electrode for 4-Chlorophenol Degradation [J]. Environmental Science and Technology. 2009, 43(3): 858-863.

DOI: 10.1021/es802420u

[11] Guijarro Ne stor, Lana-Villarreal Teresa, Mora-Sero Iva n, etc. CdSe Quantum Dot-Sensitized TiO2 Electrodes: Effect of Quantum Dot Coverage and Mode of Attachment [J]. Journal of Physical Chemistry C. 2009, 113(10): 4208-4214.

DOI: 10.1021/jp808091d

[12] Li Guisheng, Zhang Dieqing, Yu Jimmy C. A New Visible-Light Photocatalyst: CdS Quantum Dots Embedded Mesoporous TiO2 [J]. Environmental Science & Technology. 2009, 43(18): 7079-7085.

DOI: 10.1021/es9011993

[13] Li Tzung-Luen, Teng Hsisheng. Solution synthesis of high-quality CuInS2 quantum dots as sensitizers for TiO2 photoelectrodes [J]. Journal of Materials Chemistry. 2010 2010; 20(18): 3656-3664.

DOI: 10.1039/b927279h

[14] Wang Defa, Zhao Haiguang, Wu Nianqiang, etc. Nanohybrids via Quantum Confinement [J]. Journal of Physical Chemistry Letters. 2010, 1(7): 1030-1035.

[15] Weiss Emily A., Chiechi Ryan C., Geyer Scott M., etc. Size-dependent charge collection in junctions containing single-size and multi-size arrays of colloidal CdSe quantum dots. Journal of the American Chemical Society [J]. 2008, 130(1): 74-82.

DOI: 10.1021/ja076438h

[16] Bang Jin Ho, Kamat Prashant V. Solar Cells by Design: Photoelectrochemistry of TiO2 Nanorod Arrays Decorated with CdSe. Advanced Functional Materials [J]. 2010, 20(12): 1970-(1976).

DOI: 10.1002/adfm.200902234

[17] Kongkanand Anusorn , Tvrdy Kevin, †, Takechi Kensuke, etc. Quantum dot solar cells. Tuning photoresponse through size and shape control of CdSe-TiO2 architecture [J]. Journal of the American Chemical Society. 2008, 130(12): 4007-4015.

DOI: 10.1021/ja0782706

[18] Kang Qing, Yang Lixia, †, Chen Yufang, etc. Photoelectrochemical detection of pentachlorophenol with a Multiple Hybrid CdSexTe1-x/TiO2 Nanotube Structure-Based Label-Free Immunosensor [J]. Analytical Chemistry. 2010, 82(23): 9749-9754.

DOI: 10.1021/ac101798t

[19] Loa Shih-Chen, Lina Cheng-Fang, Wub Chung-Hsin, etc. Capability of coupled CdSe/TiO2 for photocatalytic degradation of 4-chlorophenol [J]. Journal of Hazardous Materials. 2004, 114(1-3): 183-190.

DOI: 10.1016/j.jhazmat.2004.08.007

[20] Xue Jinbo, Shen Qianqian, Liang Wei, etc. Photosensitization of TiO2 nanotube arrays with CdSe nanoparticles and their photoelectrochemical performance under visible light [J]. Electrochimica Acta. 2013, 97: 10-16.

DOI: 10.1016/j.electacta.2013.03.004

[21] Yang Haihua, Fan Wenguang, Vaneski Aleksandar, etc. Heterojunction Engineering of CdTe and CdSe Quantum Dots on TiO2 Nanotube Arrays: Intricate Effects of Size-Dependency and Interfacial Contact on Photoconversion Efficiencies [J]. Adv Funct Mater. 2012; 22(13): 2821-2829.

DOI: 10.1002/adfm.201103074

[22] Zhou Ji, Ji Tian-hao, Li Li, etc. Preparation of CdSe Nanoparticle-Deposited TiO2 Nanobelts and Their Visible-Light Photocatalysis [J]. Spectroscopy and Spectral Analysis. 2011, 31(5): 1398-1402.

[23] Korala L, Wang Z, Liu Y, Maldonado S, Brock SL. Uniform Thin Films of CdSe and CdSe (ZnS) Core(Shell) Quantum Dots by Sol-Gel Assembly: Enabling Photoelectrochemical Characterization and Electronic Applications [J]. Acs Nano. 2013, 7(2): 1215-1223.

DOI: 10.1021/nn304563j

[24] Vercelli B, Zotti G, Berlin A, et al. Oligo(poly)thiophene Sensitization of CdSe Nanocrystal and TiO2 Polycrystalline Electrodes: A Photoelectrochemical Investigation [J]. Journal of Physical Chemistry. 2012, 116(2): 2033-(2039).

DOI: 10.1021/jp209042c

[25] Poulose Aby Cheruvathoor, Veeranarayanan Srivani, Varghese Saino Hanna, etc. Functionalized electrophoretic deposition of CdSe quantum dots onto TiO2 electrode for photovoltaic application [J]. Chemical Physics Letters. 2012, 539: 197-203.

DOI: 10.1016/j.cplett.2012.05.007