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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical Sensing of Phenol in Different Water Sources by a Titanium Oxide Nanotubes/Single-Wall Carbon Nanotubes Nanocomposite-Ionic Liquid Amplified Sensor
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Electrochemical Sensing of Phenol in Different Water Sources by a Titanium Oxide Nanotubes/Single-Wall Carbon Nanotubes Nanocomposite-Ionic Liquid Amplified Sensor

机译：氧化钛纳米管/单壁碳纳米管纳米复合材料离子液相扩增传感器不同水源中苯酚的电化学传感

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摘要

Phenol and its derivatives are one of the main important pollutants of water sources. Highly sensitive electrochemical sensor modified with titanium oxide nanotubes/single-wall carbon nanotubes nanocomposite and room temperature ionic liquid (1-hexyl 3-methyl imidazolium hexafluorophosphate) (TiO2/NT/SWCNTs/IL/CPE) was fabricated for the determination of phenol in well water, seawater and urban water samples. The TiO2/NT/SWCNTs nanocomposite synthesized with thermal process and characterized with FESEM and TEM methods. Ration of mediators and pH value of solution were optimized as important factors on sensor ability for phenol determination and results confirmed best condition were obtained at pH= 6.0, 15% (v:v; 1-hexyl 3-methyl imidazolium hexafluorophosphate/paraffin oil) and 6% (w:w; TiO2/NT/SWCNTs/graphite powder). In continuous, the recorded differential pulse voltammograms (DPV) confirmed that the electro-oxidation current of phenol improved about 2.9 times by TiO2/NT/SWCNTs/IL/CPE compare to CPE and the phenol oxidation potential decrease about 105 mV. Then, the interference species on the determination of phenol evaluated and reported results showed high selectivity of TiO2/NT/SWCNTs/IL/CPE for sensing phenol in water samples. DP voltammograms show wide linear dynamic ranges between 0.1 – 300 μM and a good limit of detection of about 0.05 μM for sensing phenol. Finally, TiO2/NT/SWCNTs/IL/CPE is used to determine phenol in different water samples with acceptable recovery data.
机译：苯酚及其衍生物是水源的主要重要污染物之一。用氧化钛纳米管/单壁碳纳米管纳米复合材料和室温离子液（1-己基3-甲基亚氟磷酸锂）（TiO 2 / NT / SWCNTS / IL / CPE）进行高敏感的电化学传感器进行制备用于测定苯酚水，海水和城市水样。用热过程合成的TiO2 / NT / SWCNTS纳米复合材料，并用FESEM和TEM方法表征。优化介质的介质和pH值和pH值的优化是对苯酚测定的传感器能​​力的重要因素，并在pH = 6.0，15％（V：V 3-甲基咪唑鎓六氟磷酸锂/石蜡/石蜡/石蜡/石蜡/石蜡/石蜡）中获得了最佳条件的结果。和6％（W：W; TiO2 / NT / SWCNT /石墨粉）。在连续的情况下，记录的差分脉冲伏安图（DPV）证实，通过TiO2 / NT / SWCNT / IL / CPE比较CPE和酚氧化电位降低约105mV的苯酚的电氧化电流提高了约2.9倍。然后，对酚评估和报道的结果测定的干扰物质显示出用于检测水样中的TiO2 / NT / SWCNT / IL / CPE的高选择性。 DP伏安图显示宽线性动态范围在0.1-300μm之间，对感测酚的检测约为0.05μm的良好限制。最后，TiO2 / NT / SWCNT / IL / CPE用于测定不同水样中的酚，具有可接受的恢复数据。

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