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首页> 外文期刊>RSC Advances >In situ synthesis of a reduced graphene oxide/cuprous oxide nanocomposite: a reusable catalyst
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In situ synthesis of a reduced graphene oxide/cuprous oxide nanocomposite: a reusable catalyst

机译：还原氧化石墨烯/氧化亚铜纳米复合材料的原位合成：可重复使用的催化剂

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A reduced graphene oxide/cuprous oxide (RGO/Cu2O) nanocomposite has been successfully synthesized applying a simple in situ reduction method using an aqueous solution of lactulose which is used simultaneously as a reducing and stabilizing agent. Lactulose, a disaccharide, has the ability to reduce both GO and CuSO4 in situ under alkaline conditions. The GO and RGO/Cu2O nanocomposites are characterized using transmission electron microscopy, energy dispersive X-ray spectroscopy, field emission scanning electron spectroscopy, X-ray diffraction, Fourier-transform infrared spectroscopy and UV-vis absorption spectroscopy. The surface charge as well as stability is established by analyzing the zeta potential value. The results confirm the synthesis of the RGO/Cu2O nanocomposite and the existence of interactions between Cu2O and RGO. It is also observed that Cu2O nanoparticles with an average size of 5 nm are uniformly dispersed throughout the RGO sheets. The catalytic activity of the RGO/Cu2O nanocomposite is excellent for the 'click' reaction and remains the same for six cycles.
机译：还原性氧化石墨烯/氧化亚铜（RGO / Cu2O）纳米复合材料已成功应用一种简单的原位还原方法合成，该方法使用乳果糖水溶液同时用作还原和稳定剂。乳果糖（一种二糖）具有在碱性条件下原位还原GO和CuSO4的能力。 GO和RGO / Cu2O纳米复合材料的特征在于使用透射电子显微镜，能量色散X射线光谱，场发射扫描电子光谱，X射线衍射，傅立叶变换红外光谱和UV-vis吸收光谱。通过分析ζ电位值来建立表面电荷以及稳定性。结果证实了RGO / Cu2O纳米复合材料的合成以及Cu2O和RGO之间存在相互作用。还观察到平均尺寸为5nm的Cu 2 O纳米颗粒均匀地分散在整个RGO片中。 RGO / Cu2O纳米复合材料的催化活性对于“点击”反应非常出色，并在六个循环中保持不变。

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