| Cu掺杂TiO_2作为SERS基底的研究 |
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| 引用本文： | 薛向欣,纪伟,毛竹,阮伟东,赵冰,MA Stephen,LOMBARDI John R.Cu掺杂TiO_2作为SERS基底的研究[J].中国科学:化学,2011(2):398-402. |
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| 作者姓名： | 薛向欣 纪伟 毛竹 阮伟东 赵冰 MA Stephen LOMBARDI John R |
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| 作者单位： | 超分子结构与材料国家重点实验室吉林大学;The City College of New York; |
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| 基金项目： | 国家自然科学基金(20873050,20921003,20973074); 教育部引智计划(B06009)的资助 |
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| 摘 要： | 本文采用溶胶-水热法制备了TiO2及Cu掺杂的TiO2纳米粒子作为表面增强拉曼光谱(SERS)活性基底,观察到当4-巯基苯甲酸吸附在3%Cu掺杂的TiO2表面上时,其SERS信号得到了最大程度的增强.Cu离子掺杂进TiO2晶格时会使TiO2表面的缺陷浓度(表面态)得到增加,一定量的缺陷浓度对TiO2-to-Molecule的电荷转移机理起到促进作用,进一步证明了化学增强机理在SERS现象的贡献.
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| 关 键 词： | TiO2 掺杂 SERS 电荷转移 |
Study of enhanced Raman scattering for molecules adsorbed on Cu-doped TiO_2 nanoparticles |
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| XUE XiangXin,JI Wei,MAO Zhu,RUAN WeiDong,ZHAO Bing,MA Stephen & LOMBARDI John R. State Key Laboratory of Supramolecular Structure , Materials,Jilin University,Changchun ,China The City College of New York,New York ,USA.Study of enhanced Raman scattering for molecules adsorbed on Cu-doped TiO_2 nanoparticles[J].Scientia Sinica Chimica,2011(2):398-402. |
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| Authors: | XUE XiangXin JI Wei MAO Zhu RUAN WeiDong ZHAO Bing MA Stephen & LOMBARDI John R State Key Laboratory of Supramolecular Structure Materials Jilin University Changchun China The City College of New York New York USA |
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| Institution: | XUE XiangXin1,JI Wei1,MAO Zhu1,RUAN WeiDong1,ZHAO Bing1,MA Stephen2 & LOMBARDI John R.2 1 State Key Laboratory of Supramolecular Structure and Materials,Jilin University,Changchun 130012,China 2 The City College of New York,New York 10031,USA |
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| Abstract: | A series of Cu-doped TiO2(Cu-TiO2) nanoparticles(NPs) have been synthesized for the application as surface-enhanced Raman scattering(SERS) substrates.Significant SERS signals were observed when the probing molecules of 4-mercaptobenzoic acid were adsorbed on the surface of these substrates.Transmission electron microscopy(TEM),UV-vis spectrophotometer,X-ray Diffraction(XRD) and X-ray photoelectron spectroscopy(XPS) have been employed to investigate the TiO2 and Cu-TiO2 nanaoparticles.The crystalline defects... |
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| Keywords: | TiO2 dope surface-enhanced Raman scattering(SERS) charge-transfer |
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