Size-controlled synthesis of Cu2O nanoparticles on reduced graphene oxide sheets and their application as non-enzymatic glucose sensor materials
Size-controlled synthesis of Cu2O nanoparticles on reduced graphene oxide sheets and their application as non-enzymatic glucose sensor materials
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DOI：
10.1007/s10008-015-2911-y
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发表时间：
2015-06
影响因子：
2.5
通讯作者：
Xiaoyan Yan;Jing Yang;Lei Ma;Xili Tong;Yingyong Wang;G. Jin;Xiangyun Guo
中科院分区：
文献类型：
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作者：
Xiaoyan Yan;Jing Yang;Lei Ma;Xili Tong;Yingyong Wang;G. Jin;Xiangyun Guo
以醋酸铜和氧化石墨为前驱体，在二甘醇溶液中，通过多元醇法制备了均匀分散在还原氧化石墨烯（RGO）片上的氧化亚铜纳米粒子。通过改变热处理时间可以控制Cu 2 O颗粒的尺寸。随着在140 °C下的热处理时间从0延长到30 min，还原的氧化石墨烯片上的Cu 2 O颗粒的尺寸从500 nm减小到4 nm。Cu 2 O/RGO复合材料在铁氰化钾溶液中的电化学活性对Cu 2 O纳米颗粒的尺寸有很强的敏感性。此外，最小尺寸的复合基电极在碱性介质中对葡萄糖的电催化氧化表现出优异的电化学活性。该传感器具有灵敏度高、稳定性好、线性范围宽、检测限低（0.1 μM）、结构简单等优点，有望成为非酶葡萄糖传感器的发展方向。
Cuprous oxide nanoparticles uniformly dispersed on reduced graphene oxide (RGO) sheets were prepared by a polyol process using copper acetate and graphite oxide as precursors in diethylene glycol solution. The size of Cu2O particles can be controlled by changing the heat treatment time. With prolonging the heat treatment time at 140 °C from 0 to 30 min, the size of Cu2O particles on the reduced graphene oxide sheets decreases from 500 to 4 nm. The electrochemical activity of the Cu2O/RGO composites in potassium ferricyanide solution shows strongly sensitive on the size of Cu2O nanoparticles. Moreover, the smallest size of composite-based electrode shows excellent electrochemical activities for electrocatalytic oxidation of glucose in alkaline medium. The proposed biosensor can be applied to the quantification of glucose with a high sensitivity and durability, wide linear range, a low detection limit of 0.1 μM, and ease of construction, thus is promising for the future development of non-enzymatic glucose sensors.