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Electrochemical sensor based on palladium-reduced graphene oxide modified with gold nanoparticles for simultaneous determination of acetaminophen and 4-aminophenol
Talanta ( IF 6.1 ) Pub Date : 2017-09-08 , DOI: 10.1016/j.talanta.2017.09.021
Huijuan Wang , Siyu Zhang , Shufang Li , Jianying Qu

Herein, a newly developed electrochemical sensor base on the nanohybrid of palladium-reduced graphene oxide modified with gold nanoparticles (Au/Pd/rGO) was established, which was prepared by electrodeposing Au nanoparticles on Pd/rGO modified on a glass carbon electrode. The morphologies and microstructures of the as-prepared nanohybrid were characterized by X-ray photoelectron spectroscopy, Scanning electron microscopy and Infrared spectroscopy. And, experiment results showed that the prepared Au/Pd/rGO nanohybrid exhibited excellent electrocatalytic- activity toward the redox of acetaminophen (PA) and 4-aminophenol (4-AP) simultaneously. The linear detection ranges were 1.00–250.00 μM for PA and 1.00–300.00 μM for 4-AP, with the detection limits of 0.30 μM for PA and 0.12 μM for 4-AP, respectively. Because of the excellent performance of lower detection, wider linear range and better selectivity, the prepared Au/Pd/rGO nanohybrid with more potential applications was a promising candidate for advanced electrode material in electrochemical sensing field.



中文翻译:

基于纳米金修饰的钯还原氧化石墨烯的电化学传感器同时测定对乙酰氨基酚和4-氨基酚

在此,建立了一种新的基于金纳米颗粒修饰的钯还原氧化石墨烯(Au / Pd / rGO)纳米杂化体的电化学传感器,该传感器是通过将Au纳米颗粒电沉积在玻璃碳电极上修饰的Pd / rGO上而制备的。通过X射线光电子能谱,扫描电子显微镜和红外光谱对制备的纳米杂化物的形貌和微观结构进行了表征。并且,实验结果表明,所制备的Au / Pd / rGO纳米杂化物同时具有对乙酰氨基酚(PA)和4-氨基苯酚(4-AP)的氧化还原的优异的电催化活性。PA的线性检测范围为1.00–250.00μM,4-AP的线性检测范围为1.00–300.00μM,PA和4-AP的检测限分别为0.30μM和0.12μM。

更新日期:2017-09-08
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