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Facile synthesis of copper and carbon co-doped peanut shell-like Mo2C/Mo3P electrocatalysts for ultra-sensitive amperometric detection of hydrogen peroxide
Microchemical Journal ( IF 4.9 ) Pub Date : 2022-07-16 , DOI: 10.1016/j.microc.2022.107795
Bo Li , De-Rui Kong , Li-Hong Liu , Ming Yang , Xian-Fa Zhang , Zhao-Peng Deng , Li-Hua Huo , Shan Gao

The rapid and precise detection of hydrogen peroxide has recently been a hot research in non-enzymatic electrochemical sensors. Herein, peanut shell-like Cu-Mo2C/Mo3P/C composite was simply prepared by in-situ simultaneous phosphorization and carbonization of [Cu(P4Mo6)]-based metal-organic framework (MOF) under N2/H2 atmosphere. Then, the above nanomaterials were deposited on glassy carbon electrode (GCE) surface through facile drop coating method, thus fabricating a highly efficient non-enzymatic H2O2 electrochemical sensor. In phosphate buffer solution (PBS, pH = 7.4), the Cu-Mo2C/Mo3P/C/GCE exhibits high sensitivity (653.2 μA mM-1 cm-2) and low detection limit (37 nM) to H2O2. Its amperometric response is 1.94, 3.27 and 4.71 times bigger than that of Mo2C/Mo3P/C/GCE, Mo3P/GCE and Mo2C/GCE. Such good electrochemical sensing performance is mainly ascribed to the synergism of unique microstructure, platinum-like Mo2C and Mo3P co-combination, together with copper and carbon dual-doping. Moreover, it can realize the satisfactory detection of H2O2 in human serum, disinfectant and contact lens solution, indicating the potential application in the fields of environmental monitoring and biochemical analysis.



中文翻译:

铜和碳共掺杂花生壳状 Mo2C/Mo3P 电催化剂的简便合成用于过氧化氢的超灵敏电流检测

过氧化氢的快速精确检测是近来非酶电化学传感器的研究热点。本文通过[Cu(P 4 Mo 6 )]基金属有机骨架(MOF)在N气氛下原位同时磷化和碳化制备花生壳状Cu-Mo 2 C/Mo 3 P/C复合材料。2 /H 2大气压。然后,通过简易滴涂法将上述纳米材料沉积在玻碳电极(GCE)表面,从而制备出高效的非酶H 2 O 2电化学传感器。在磷酸盐缓冲溶液(PBS,pH = 7.4)中,Cu-Mo 2C/Mo 3 P/C/GCE对H 2 O 2表现出高灵敏度(653.2 μA mM -1 cm -2)和低检测限(37 nM)。其电流响应是Mo 2 C/Mo 3 P/C/GCE、Mo 3 P/GCE和Mo 2 C/GCE的1.94、3.27和4.71倍。这种良好的电化学传感性能主要归功于独特的微观结构、类铂 Mo 2 C 和 Mo 3 P 的共结合以及铜和碳双掺杂的协同作用。而且,它可以实现对H 2 O 2的满意检测。在人血清、消毒剂和隐形眼镜溶液中,表明在环境监测和生化分析领域的潜在应用。

更新日期:2022-07-17
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