Abstract NiCo2O4 nanoparticles on graphene oxide hold a promising nanostructure material for a wide range of applications due to their tunable physical/chemical properties. Herein, it is reported a simple strategy to synthesize nickel-cobalt nanoparticles loaded on reduced graphene oxide (rGO) to form an integrated nanostructure. The thermal treatment of NiCo2O4 precursor@rGO resulted in the formation of spinel NiCo2O4 nanoparticles of about 10 nm directly on rGO nanoplatform. Magnetic characterization of non-treated and thermally treated samples was evaluated showing that NiCo2O4@rGO exhibits superparamagnetic behavior with a maximum occurring at 20 K.

中文翻译：

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负载镍钴氧化物纳米颗粒的还原氧化石墨烯纳米平台：可控合成和物理化学性质

摘要 氧化石墨烯上的 NiCo2O4 纳米颗粒由于其可调节的物理/化学性质，是一种具有广泛应用前景的纳米结构材料。在此，报道了一种简单的策略来合成负载在还原氧化石墨烯 (rGO) 上的镍钴纳米粒子以形成集成的纳米结构。NiCo2O4 前驱体@rGO 的热处理导致直接在 rGO 纳米平台上形成约 10 nm 的尖晶石 NiCo2O4 纳米颗粒。对未处理和热处理样品的磁性特征进行了评估，表明 NiCo2O4@rGO 表现出超顺磁性，最大值出现在 20 K。