SERS investigation and detection of levofloxacin drug molecules on semiconductor TiO2: Charge transfer contribution
SERS investigation and detection of levofloxacin drug molecules on semiconductor TiO2: Charge transfer contribution
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半导体 TiO2 上左氧氟沙星药物分子的 SERS 研究和检测：电荷转移贡献
DOI：
10.1016/j.colsurfa.2016.08.068
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发表时间：
2016-11
期刊：
影响因子：
--
通讯作者：
Zhao Bing
中科院分区：
文献类型：
--
作者：
Yang Libin;Gong Mengdi;Jiang Xin;Chen Yufeng;Han Xiaoxia;Song Kun;Sun Xiaodong;Zhang Yingjiu;Zhao Bing
In this work, TiO2and Zn doped TiO2nanoparticles (Zn-TiO2NPs) were synthesized and served as SERS-active substrate for the detection of levofloxacin (LVFX) drug molecules. Both experimental and theoretical methods are used to study the enhanced mechanism and interaction between substrate and drug molecule. The results indicate that the LVFX is close to the substrate surface through the carboxyl group. The levofloxacin molecules adsorbed on Zn-TiO2NPs exhibit the largest SERS enhancement, when the Zn content is 3%, the adsorption time is 7 h and pH value is 6.78. The detection limit can be reduced to 1.29 × 10−7mol/L by this method. And, a quantitative detection method of LVFX can be established. There is a good linear relationship in the range of 1 × 10−3–1 × 10−7mol/L concentration.
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