Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, PR China.
Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, PR China.
Talanta. 2018 Feb 1;178:188-194. doi: 10.1016/j.talanta.2017.09.021. Epub 2017 Sep 8.
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 1.00-250.00μM for PA and 1.00-300.00μM for 4-AP, with the detection limits of 0.30μM for PA and 0.12μM 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.
本文基于纳米钯还原氧化石墨烯修饰金纳米粒子（Au/Pd/rGO）的新型电化学传感器，通过在玻碳电极上修饰的 Pd/rGO 上电沉积 Au 纳米粒子来制备该纳米杂化物。采用 X 射线光电子能谱、扫描电子显微镜和红外光谱对所制备的纳米杂化物的形貌和微观结构进行了表征。实验结果表明，所制备的 Au/Pd/rGO 纳米杂化物对扑热息痛（PA）和 4-氨基酚（4-AP）的氧化还原具有优异的电催化活性。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 的检测限为 0.30μM，4-AP 的检测限为 0.12μM。由于具有更低的检测限、更宽的线性范围和更好的选择性等优异性能，所制备的 Au/Pd/rGO 纳米杂化物作为电化学传感领域先进电极材料具有广阔的应用前景。
