Synthesis of Palladium, ZnFe2O4 Functionalized Reduced Graphene Oxide Nanocomposites as H2O2 Detector
Synthesis of Palladium, ZnFe2O4 Functionalized Reduced Graphene Oxide Nanocomposites as H2O2 Detector
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DOI：
10.1021/acs.iecr.6b04964
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发表时间：
2017-04-19
影响因子：
4.2
通讯作者：
Li, Yang
中科院分区：
文献类型：
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作者：
Ning, Lingyun;Liu, Yizhe;Li, Yang
本工作以氧化石墨烯(RGO)的还原为基础，合成了一种高效的过氧化氢还原催化剂。在RGO表面包覆了纳米Pd/ZnFe2O4/RGO，并将其用于修饰玻碳电极以检测过氧化氢。用扫描电子显微镜、透射电子显微镜、X射线粉末衍射仪和X射线光电子能谱对Pd/ZnFe2O4/rGO纳米复合材料进行了表征。采用循环伏安法和安培法对制备的过氧化氢传感器进行了表征和性能优化。该双氧水传感器的线性范围从25µM到10.2mM，灵敏度提高到621.64µA mm(-1)cm(-2)。
In the present work, a highly efficient catalyst toward the reduction of hydrogen peroxide (H2O2) was synthesized on account of reduced graphene oxide (rGO). The rGO were coated with ZnFe2O4 and Pd nanoparticles (Pd/ZnFe2O4/rGO), which were used to modify a glassy carbon electrode to detect H2O2. The Pd/ZnFe2O4/rGO nano composites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction, and X-ray photoelectron spectroscopy. Cyclic voltammetry and amperometry measurements were used to characterize and optimize the property of as-prepared H2O2 sensor. The proposed H2O2 sensor displayed a wide linear range from 25 mu M to 10.2 mM with an enhanced sensitivity of 621.64 mu A mM(-1) cm(-2).