TiO2/Ag composite nanowires for a recyclable surface enhanced Raman scattering substrate

doi:10.1088/1674-1056/22/10/106102

中国物理B ›› 2013, Vol. 22 ›› Issue (10): 106102-106102.doi: 10.1088/1674-1056/22/10/106102

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

TiO₂/Ag composite nanowires for a recyclable surface enhanced Raman scattering substrate

邓超越, 张谷令, 邹斌, 施洪龙, 梁玉洁, 李永超, 付金祥, 王文忠

School of Science, Minzu University of China, Beijing 100081, China

收稿日期:2013-01-20 修回日期:2013-04-11 出版日期:2013-08-30 发布日期:2013-08-30
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 10705056), the "985 Project" (Grant No. 98507-010009), the "211 Project" of Ministry of Education of China, the Pilot Project of Comprehensive Reform for the Specialty of Applied Physics of Minzu University of China, and the Undergraduate Research Training Program of Minzu University of China (Grant Nos. GCCX 2012110007 and 2012110008).

TiO₂/Ag composite nanowires for a recyclable surface enhanced Raman scattering substrate

Deng Chao-Yue (邓超越), Zhang Gu-Ling (张谷令), Zou Bin (邹斌), Shi Hong-Long (施洪龙), Liang Yu-Jie (梁玉洁), Li Yong-Chao (李永超), Fu Jin-Xiang (付金祥), Wang Wen-Zhong (王文忠)

School of Science, Minzu University of China, Beijing 100081, China

Received:2013-01-20 Revised:2013-04-11 Online:2013-08-30 Published:2013-08-30
Contact: Zhang Gu-Ling E-mail:glzhang@muc.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 10705056), the "985 Project" (Grant No. 98507-010009), the "211 Project" of Ministry of Education of China, the Pilot Project of Comprehensive Reform for the Specialty of Applied Physics of Minzu University of China, and the Undergraduate Research Training Program of Minzu University of China (Grant Nos. GCCX 2012110007 and 2012110008).

摘要/Abstract

摘要： Multifunctional TiO₂/Ag composite nanowires are fabricated with a hydrothermal method by precipitating Ag nanoparticles (NPs) on the surfaces of TiO₂ nanowires. This hierarchical one-dimensional (1D) nanostructure can be used as a surface enhanced Raman scattering (SERS) substrate with high sensitivity, for detecting the rhodamine 6G (R6G) in a wide range of low concentrations (from 1×10^-6 M to 1×10^-12 M). In addition, the substrate can be self-cleaned under the irradiation of ultraviolet (UV) light due to the superior photocatalytic capacity of the TiO₂/Ag composite nanostructure, making the recycled use of SERS substrates closer to reality. With both the evident SERS performance and high efficiency of photocatalytic capacity, such TiO₂/Ag composite nanowires demonstrate considerable potential in the chemical sensing of organic pollutants.

关键词: surface enhanced Raman scattering, TiO₂, photodegradation, recyclable

Abstract: Multifunctional TiO₂/Ag composite nanowires are fabricated with a hydrothermal method by precipitating Ag nanoparticles (NPs) on the surfaces of TiO₂ nanowires. This hierarchical one-dimensional (1D) nanostructure can be used as a surface enhanced Raman scattering (SERS) substrate with high sensitivity, for detecting the rhodamine 6G (R6G) in a wide range of low concentrations (from 1×10^-6 M to 1×10^-12 M). In addition, the substrate can be self-cleaned under the irradiation of ultraviolet (UV) light due to the superior photocatalytic capacity of the TiO₂/Ag composite nanostructure, making the recycled use of SERS substrates closer to reality. With both the evident SERS performance and high efficiency of photocatalytic capacity, such TiO₂/Ag composite nanowires demonstrate considerable potential in the chemical sensing of organic pollutants.

Key words: surface enhanced Raman scattering, TiO₂, photodegradation, recyclable

中图分类号: (Structure of nanowires and nanorods (long, free or loosely attached, quantum wires and quantum rods, but not gate-isolated embedded quantum wires))

61.46.Km

78.30.Er (Solid metals and alloys ?) 78.68.+m (Optical properties of surfaces)

邓超越, 张谷令, 邹斌, 施洪龙, 梁玉洁, 李永超, 付金祥, 王文忠. TiO₂/Ag composite nanowires for a recyclable surface enhanced Raman scattering substrate[J]. 中国物理B, 2013, 22(10): 106102-106102.

Deng Chao-Yue (邓超越), Zhang Gu-Ling (张谷令), Zou Bin (邹斌), Shi Hong-Long (施洪龙), Liang Yu-Jie (梁玉洁), Li Yong-Chao (李永超), Fu Jin-Xiang (付金祥), Wang Wen-Zhong (王文忠). TiO₂/Ag composite nanowires for a recyclable surface enhanced Raman scattering substrate[J]. Chin. Phys. B, 2013, 22(10): 106102-106102.

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TiO₂/Ag composite nanowires for a recyclable surface enhanced Raman scattering substrate

TiO₂/Ag composite nanowires for a recyclable surface enhanced Raman scattering substrate

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