Nickel oxide (NiO)/reduced graphene oxide (RGO) composite modified carbon paste electrode as an electrochemical sensor for the sensitive determination of dopamine

T. Joseph, V. K. Sona, A. Aiswarya, Faseeha Abdul Rasheed, Nygil Thomas
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引用次数: 3

Abstract

A simple, nickel oxide/reduced graphene oxide composite modified carbon paste electrode (NiO/RGO-MCPE) was fabricated as an electrochemical sensor for the sensitive determination of Dopamine (DA). Hummers method and coprecipitation followed by reduction method were used for facile, simple and cost-effective preparation for the modifier graphite oxide and NiO/RGO composite respectively. The composite was characterized by using PXRD, FT-IR and TG-DSC. The greater surface area of NiO/RGO composite improves the performance towards DA. The NiO/RGO-MCPE possesses better electrochemical activity in Cyclic Voltammetry (CV) and Differential Pulse Voltammetry (DPV). The developed sensor shows good reproducibility, and stability. Detection limit of DA was determined from differential pulse voltammetry (DPV) and found to be 8.3 nM.A simple, nickel oxide/reduced graphene oxide composite modified carbon paste electrode (NiO/RGO-MCPE) was fabricated as an electrochemical sensor for the sensitive determination of Dopamine (DA). Hummers method and coprecipitation followed by reduction method were used for facile, simple and cost-effective preparation for the modifier graphite oxide and NiO/RGO composite respectively. The composite was characterized by using PXRD, FT-IR and TG-DSC. The greater surface area of NiO/RGO composite improves the performance towards DA. The NiO/RGO-MCPE possesses better electrochemical activity in Cyclic Voltammetry (CV) and Differential Pulse Voltammetry (DPV). The developed sensor shows good reproducibility, and stability. Detection limit of DA was determined from differential pulse voltammetry (DPV) and found to be 8.3 nM.
氧化镍(NiO)/还原氧化石墨烯(RGO)复合修饰碳糊电极作为电化学传感器灵敏测定多巴胺
制备了一种简单的氧化镍/还原氧化石墨烯复合修饰碳糊电极(NiO/RGO-MCPE)作为电化学传感器,用于多巴胺(DA)的灵敏测定。采用Hummers法和共沉淀法分别制备了改性剂氧化石墨和NiO/RGO复合材料,制备方法简便、成本低。采用PXRD、FT-IR和TG-DSC对复合材料进行了表征。NiO/RGO复合材料的表面积越大,其抗DA性能越好。NiO/RGO-MCPE在循环伏安法(CV)和差分脉冲伏安法(DPV)中具有较好的电化学活性。所研制的传感器具有良好的重现性和稳定性。采用差分脉冲伏安法(DPV)测定DA的检出限为8.3 nM。制备了一种简单的氧化镍/还原氧化石墨烯复合修饰碳糊电极(NiO/RGO-MCPE)作为电化学传感器,用于多巴胺(DA)的灵敏测定。采用Hummers法和共沉淀法分别制备了改性剂氧化石墨和NiO/RGO复合材料,制备方法简便、成本低。采用PXRD、FT-IR和TG-DSC对复合材料进行了表征。NiO/RGO复合材料的表面积越大,其抗DA性能越好。NiO/RGO-MCPE在循环伏安法(CV)和差分脉冲伏安法(DPV)中具有较好的电化学活性。所研制的传感器具有良好的重现性和稳定性。采用差分脉冲伏安法(DPV)测定DA的检出限为8.3 nM。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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