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首页> 外文期刊>RSC Advances >Electrochemical determination of tetrabromobisphenol A in water samples based on a carbon nanotubes@zeolitic imidazole framework-67 modified electrode
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Electrochemical determination of tetrabromobisphenol A in water samples based on a carbon nanotubes@zeolitic imidazole framework-67 modified electrode

机译：基于碳纳米管的水样中水样中四溴二苯酚A的电化学测定Zeolital咪唑框架-67改性电极

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摘要

Carbon nanotubes@zeolitic imidazole framework-67 (CNTs@ZIF-67), a conductive composite was prepared from carboxylic carbon nanotubes and a cobalt–imidazole framework. It possesses an excellent adsorption capacity (92.12 mg g ~(?1) ) for the flame retardant tetrabromobisphenol A (TBBPA). The composite was characterized by transmission and scanning electron microscopy, FTIR and X-ray diffractometry. It was then used to modify an acetylene black electrode. Electrochemical studies showed the current response of the modified electrode to be larger than that of electrodes modified with CNTs-COOH or ZIF-67 only. Electrochemical impedance spectroscopy showed this material combination to improve the conductivity of ZIF-67. The addition of perfluorodecanoic acid further improves the response. The sensor is stable, reproducible, and has a linear range of 0.01–1.5 μM TBBPA concentration, with a 4.2 nM detection limit (at S/N = 3). The sensor was successfully applied to the detection of TBBPA in spiked rain and pool water samples.
机译：碳纳米管@沸石咪唑框架-67（CNTs @ ZIF-67），由羧基碳纳米管和钴 - 咪唑框架制备导电复合物。对于阻燃四溴二苯异酚A（TBBPA）具有优异的吸附能力（92.12mg g〜（α1））。通过透射和扫描电子显微镜，FTIR和X射线衍射法表征复合材料。然后使用它来改变乙炔黑电极。电化学研究表明，改性电极的电流响应大于用CNTS-COOH或ZIF-67改性的电极的响应。电化学阻抗光谱显示该材料组合以提高ZIF-67的电导率。添加全氟二癸酸进一步改善了响应。传感器稳定，可再现，具有0.01-1.5μm的线性范围为0.01-1.5μmtbbpa浓度，具有4.2nm检测限（在s / n = 3）。传感器成功地应用于尖刺雨水和泳池水样中TBBPA的检测。

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