Direct Electrodeposition of Gold Nanostructures onto Glassy Carbon Electrodes for Non-enzymatic Detection of Glucose

Shu, Honghui; Cao, Leilei; Chang, Gang; He, Hanping; Zhang, Yuting; He, Yunbin

doi:10.1016/j.electacta.2014.04.031

Cited by 135 publications

(86 citation statements)

References 46 publications

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“…6B), and the calculated sensitivity was 1.21 mA cm À2 mM À1 (71.9 mA cm À2 mM À1 vs geometric area). The upper-limit of the linear range was far beyond the physiological level (3-8 mM), suggesting that the electrode developed here would be useful in the detection of glucose concentrations within the physiological levels [9,42,46,48]. The limit of detection (LOD) was estimated to be 30 mM at a signal-to-noise (S/N) ratio of 3, and the response time was less than 3 s. It can be noticed that the highly dispersed Pt nanoclusters exhibits prominent electrocatalytic performance for glucose sensing in terms of the sensitivity, detection potential, LOD and linear range, compared to those previously catalytic materials, as listed in Table 1.…”

Section: Amperometric Response Of the Ptncs/graphene To Glucose Oxidamentioning

confidence: 97%

“…Among all electrodes, the PtNCs/graphene synthesized with the addition of PVP shows the highest ECSA, 22.37 m 2 g À1 , which provides more active sites and can effectively improve the electrochemical activity [41,44]. Moreover, electrodes with high ECSA are suitable for kinetically controlled reactions, such as glucose oxidation, however, it influences diffusion-controlled reactions, for example, AA oxidation, only slightly [45,46]. This means that the highly dispersed Pt nanoclusters with larger surface area will lead to a higher sensitivity for glucose detection, as well as a better selectivity.…”

Section: Electrochemical Characterizations Of the Ptncs/graphene Elecmentioning

confidence: 99%

“…For amperometric sensing applications, electrodes are often evaluated by measuring current response at a fixed potential and within a certain time to successive addition of analyte and possible interfering species [9,15,46]. To improve the performance of the glucose sensor, the detection potential should be optimized.…”

Section: Amperometric Response Of the Ptncs/graphene To Glucose Oxidamentioning

confidence: 99%

See 2 more Smart Citations

Synthesis of highly dispersed Pt nanoclusters anchored graphene composites and their application for non-enzymatic glucose sensing

Chang

Shu

Huang

et al. 2015

Electrochimica Acta

Self Cite

125

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Section: Amperometric Response Of the Ptncs/graphene To Glucose Oxidamentioning

confidence: 97%

Section: Electrochemical Characterizations Of the Ptncs/graphene Elecmentioning

confidence: 99%

Section: Amperometric Response Of the Ptncs/graphene To Glucose Oxidamentioning

confidence: 99%

See 1 more Smart Citation

Synthesis of highly dispersed Pt nanoclusters anchored graphene composites and their application for non-enzymatic glucose sensing

Chang

Shu

Huang

et al. 2015

Electrochimica Acta

Self Cite

125

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“…Noble metals or their alloys, such as Pd [21], Pt [22], Au [23], Pt-Pd [24], and Pt-Au [25] have been extensively applied in the research on glucose electrooxidation due to the excellent catalytic activity. Pt as an efficient catalyst has been studied for non-enzymatic glucose sensing.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of non-enzymatic glucose sensor based on bimetallic hollow Ag/Pt nanoparticles prepared by galvanic replacement reaction

Tang

Guo

et al. 2014

Ionics

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A non-enzymatic glucose sensor was successfully fabricated by immobilization of bimetallic hollow Ag/Pt nanoparticles (BH-Ag/Pt NPs) using the galvanic replacement reaction onto the surface of the pretreated pure Au electrode. The morphology and composition of the BH-Ag/Pt NPs were investigated by high-resolution transmission electron microscopy (HRTEM), scanning transmission electron microscopy (STEM), energy dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD), which proved the formation of bimetallic hollow Ag/Pt nanoparticles. The electroactive surface area and interface property of the Au electrode modified by BH-Ag/Pt NPs were measured by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The associated calculated values were 0.210 cm 2 and 11.30 Ω cm 2 , which were distinctly higher than those of the pure Au electrode. The electrocatalytic properties of the modified electrode toward glucose oxidation were evaluated by CV and differential pulse voltammetry (DPV). The results showed that the modified electrode had a high electrocatalytic activity toward glucose oxidation, a linear response to the glucose concentrations ranging from 1 to 12 mM covering the physiological level of 3-8 mM with a current sensitivity of 7 μA mM −1 and a low detection limit of 0.013 mM. Moreover, the modified electrode also showed ideal reproducibility, long-term stability, and high selectivity. It also showed good glucometer test values for real samples. Therefore, both of the facile preparation method and the excellent properties of the Au electrode modified by BH-Ag/Pt NPs could potentially be implemented to develop novel non-enzymatic glucose sensors.

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“…31,32 In this study the two-step electrodepositing method was used to form the sea urchin-like AuNSs, as shown in Figs. 1(e) and 1(f ).…”

Section: Roughness Factor Of Auns/po-spcesmentioning

confidence: 99%

Effect of the Chain Length of a Modified Layer and Surface Roughness of an Electrode on Impedimetric Immunosensors

Lin

2017

ANAL. SCI.

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An ultrasensitive label-free impedimetric immunosensor is constructed by modifying a 3-mercaptoproponic acid (MPA) monolayer on highly rough gold nanostructure (AuNS)-electrodeposited screen printed carbon electrodes (SPCEs) for the detection of small molecular weight drugs (SMWDs), such as salbutamol (SAL). The SPCEs preoxidized in a 0.1 M H2SO4 solution (called po-SPCEH2SO4) are electrodeposited with the AuNS to increase the roughness factor to 23.64 ± 1.76, larger than the AuNS/po-SPCENaOH or the AuNS/po-SPCEPBS. Furthermore, the MPA modified layer as a link for the anti-SAL immobilization to give the immunosensors an impedimetric signal-to-noise ratio larger than the 11-mercaptoundecanoic acid-and 16-mercaptohexadecanoic acid-modified layer, due to the lower interfacial impedance of the MPA monolayer. The MPA/AuNS/po-SPCEH2SO4-based immunosensors have a wide linear range of 1 fg mL -1 to 1 ng mL -1 and a limit of detection of 0.6 fg mL -1 . Moreover, the immunosensors can practically quantify the SAL concentrations in 1000 times-diluted serum samples with good recovery.

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Direct Electrodeposition of Gold Nanostructures onto Glassy Carbon Electrodes for Non-enzymatic Detection of Glucose

Cited by 135 publications

References 46 publications

Synthesis of highly dispersed Pt nanoclusters anchored graphene composites and their application for non-enzymatic glucose sensing

Synthesis of highly dispersed Pt nanoclusters anchored graphene composites and their application for non-enzymatic glucose sensing

Fabrication and characterization of non-enzymatic glucose sensor based on bimetallic hollow Ag/Pt nanoparticles prepared by galvanic replacement reaction

Effect of the Chain Length of a Modified Layer and Surface Roughness of an Electrode on Impedimetric Immunosensors

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