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首页> 外文期刊>International Journal of Electrochemical Science >Thulium Selective Sensor based on Nanographene/RTIL/Ionophore/Graphite
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Thulium Selective Sensor based on Nanographene/RTIL/Ionophore/Graphite

机译：基于纳米石墨烯/ RTIL /离子载体/石墨的选择性传感器

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In this work, nanographene was used as a proper nano-material to modify the composition of carbonpaste electrode. Because of a selective interaction between 4-methyl-1,2-bis(2-pyridinecarboxamido)benzene (MPB) and thulium ions identified by our previous work, MPB was incorporated as a sensingmaterial into a nano-composite carbon paste electrodes. The paste is composed of graphite, sensingmaterial MPB, nanographene (NG), and a room temperature ionic liquid namely 1-n-butyl-3- methylimidazolium tetrafluoroborate [bmim]BF4 (RTIL). The electrodes made of 50% graphite, 5%NG, 20% MPB, and 25% RTIL were found to show the most favorable behavior. The sensor shows a-1 -6 -2Nernstian response (19.90.3 mV decade ) in the concentration window of 1.010 -1.010 M with-7detection limit of 8.310 M. The response of the sensor was found to be stable in the pH range of 3.5- 9.0 and the nano-composite based Tm(III) sensors displayed very good selectivity with respect to anumber of lanthanide and transition metal ions. The proposed sensor displays a long life time (morethan 12 weeks) with a short response time of about 15 s.
机译：在这项工作中，使用纳米石墨烯作为合适的纳米材料来改变碳糊电极的组成。由于我们以前的工作发现4-甲基-1,2-双（2-吡啶甲酰胺基）苯（MPB）与th离子之间存在选择性相互作用，因此MPB作为传感材料被并入了纳米复合碳糊电极中。该糊剂由石墨，传感材料MPB，纳米石墨烯（NG）和室温离子液体，即四氟硼酸1-n-丁基-3-甲基咪唑鎓[bmim] BF4（RTIL）组成。发现由50％石墨，5％NG，20％MPB和25％RTIL制成的电极表现出最有利的性能。传感器在1.010 -1.010 M的浓度范围内显示a-1 -6 -2能斯特响应（19.90.3 mV十进制），-7的检测极限为8.310M。发现该传感器的响应在pH范围内是稳定的。 3.5-9.0和基于纳米复合材料的Tm（III）传感器对多种镧系元素和过渡金属离子显示出非常好的选择性。建议的传感器显示较长的使用寿命（超过12周），并且响应时间较短，约为15 s。

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