2015
DOI: 10.1002/cphc.201500854
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Electrochemical Biosensor Based on Nanoporous Au/CoO Core–Shell Material with Synergistic Catalysis

Abstract: An ultrathin CoO layer is deposited on the skeleton surfaces of a nanoporous gold (NPG) film by using atomic layer deposition, creating a flexible electrode. Detailed characterization demonstrates the superior performance of the flexible NPG/CoO hybrids for electrochemical catalysis. The NPG/CoO hybrid not only achieves high catalytic activity for glucose oxidation and H2O2 reduction, but also exhibits a linear dependence of the electrical signal on the concentration of glucose and H2O2 molecules in the electr… Show more

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Cited by 15 publications
(5 citation statements)
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“…In this case, a one-pot strategy was used to produce the composite electrode [ 128 ]. In another example, a free-standing NPG was fabricated and decorated with CoO using the ALD method and used to detect H 2 O 2 with good selectivity and sensitivity [ 177 ]. Table 4 summarizes some figures-of-merit for bimetallic NPG electrodes recently used for the electrochemical detection of H 2 O 2 .…”
Section: Electrochemical Applications In Chemical Sensing Using Bimet...mentioning
confidence: 99%
“…In this case, a one-pot strategy was used to produce the composite electrode [ 128 ]. In another example, a free-standing NPG was fabricated and decorated with CoO using the ALD method and used to detect H 2 O 2 with good selectivity and sensitivity [ 177 ]. Table 4 summarizes some figures-of-merit for bimetallic NPG electrodes recently used for the electrochemical detection of H 2 O 2 .…”
Section: Electrochemical Applications In Chemical Sensing Using Bimet...mentioning
confidence: 99%
“…Nanoporous metals decorated with transition-metal oxides have been proposed as structures that can serve as electrochemical biosensors. Zhang et al deposited a CoO layer on nanoporous gold (NPG) for the detection of glucose and H2O2 (Zhang et al, 2016). The Au nanopores with a size ranging between 40-100 nm were covered with 100-800 cycles of CoO.…”
Section: Materials With Catalytic Activitymentioning
confidence: 99%
“…The NiO/SiC prepared with 600 ALD cycles of NiO had the best sensing performance among the 200-, 400-, 600-, and 800-NiO/SiC with a sensitivity of 2.037 mA/(mM/cm 2 ). Zhang et al [136] hybrid showed high catalytic activity for glucose oxidation and H 2 O 2 reduction due to the excellent synergistic performances of interfacial Au and CoO, as well as the gold skeleton with a large surface area. Because of high catalytic performance of the CoO layer, as shown in Fig.…”
Section: Applications Of Ald In Biosensorsmentioning
confidence: 99%