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首页> 外文期刊>Environmental Science & Technology >A Simple, Stable and Picomole Level Lead Sensor Fabricated on DNAbased Carbon Hybridized TiO_2 Nanotube Arrays
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A Simple, Stable and Picomole Level Lead Sensor Fabricated on DNAbased Carbon Hybridized TiO_2 Nanotube Arrays

机译：基于DNA的碳杂化TiO_2纳米管阵列制造的简单，稳定和Picomole级铅传感器。

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摘要

An electrochemical lead sensor is developed on DNA-based vertically aligned conductive carbon hybridized TiO_2 nanotube arrays (DNA/C-TiO_2 NTs). The designed DNAC-TiO_2 NTs sensor is superior in determination of lead with high sensitivity, selectivity and repeatability, as well as wide pH adaptability, fast electro-accumulation capacity for lead and easy regeneration. Such remarkable characteristics for lead sensing are attributed to the immobilization of abundant target biomolecules, DNA, and the enhanced bioelectrochemical activity. The controllable carbon hybridization of the TiO_2 NTs increases the conductivity of the electrode, while retaining the tubular structure, biocompatibility, and hydrophilicity. The results show that the lead sensor possesses a wide linear calibration ranging from 0.01 to 160 nM with the detection limitation at a picomole level (3.3 pM). The application of the present sensor is realized for determination of Pb~(2+) in real water samples.
机译：在基于DNA的垂直排列的导电碳杂化TiO_2纳米管阵列（DNA / C-TiO_2 NTs）上开发了一种电化学铅传感器。设计的DNAC-TiO_2 NTs传感器具有高灵敏度，高选择性和可重复性，以及宽的pH适应性，铅的快速电累积能力和易于再生的铅测定方法。铅感测的这种显着特征归因于大量目标生物分子，DNA的固定化以及增强的生物电化学活性。 TiO_2NTs的可控碳杂化增加了电极的电导率，同时保留了管状结构，生物相容性和亲水性。结果表明，铅传感器具有0.01到160 nM的宽线性校准范围，且检测限为皮摩尔水平（3.3 pM）。实现了本传感器在实际水样中Pb〜（2+）的测定。

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  • 来源
    《Environmental Science & Technology》 |2010年第11期|P.4241-4246|共6页
  • 作者

    MEICHUAN LIU; GUOHUA ZHAO; YITING TANG; ZHIMIN YU; YANZHU LEI; MINGFANG LI; YANAN ZHANG; DONGMING LI;

  • 作者单位

    Department of Chemistry, Tongji University, 1239 Siping Road, 200092 Shanghai, China;

    rnDepartment of Chemistry, Tongji University, 1239 Siping Road, 200092 Shanghai, China;

    rnDepartment of Chemistry, Tongji University, 1239 Siping Road, 200092 Shanghai, China;

    rnDepartment of Chemistry, Tongji University, 1239 Siping Road, 200092 Shanghai, China;

    rnDepartment of Chemistry, Tongji University, 1239 Siping Road, 200092 Shanghai, China;

    rnDepartment of Chemistry, Tongji University, 1239 Siping Road, 200092 Shanghai, China;

    rnDepartment of Chemistry, Tongji University, 1239 Siping Road, 200092 Shanghai, China;

    rnDepartment of Chemistry, Tongji University, 1239 Siping Road, 200092 Shanghai, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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