Fabrication of Au/Ni/boron-doped diamond electrodes via hydrogen plasma etching graphite and amorphous boron for efficient non-enzymatic sensing of glucose

Yao, Kaili; Dai, Bing; Tan, Xuezhi; Ralchenko, V.G.; Yang, Lei; Liu, Benjian; Su, Zhenhua; Zhao, Junhong; Liu, Kang; Han, Jiecai; Zhu, Jiaqi

doi:10.1016/j.jelechem.2020.114264

Cited by 15 publications

(8 citation statements)

References 45 publications

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“…The good linear relationship suggested that the reaction of glucose oxidation on the Au@NiO-2 electrodes is a typical diffusion-controlled process. 1,28 A good linear relationship was also obtained on plotting log I pa versus log v as shown in Fig. 8c and the slope is calculated to be 0.6.…”

Section: Resultsmentioning

confidence: 70%

“…A possible mechanism for glucose oxidation on the Au@ NiO nanotube electrodes may be expressed as the following equations and is illustrated in Scheme 1b according to the literature. 1,[28][29][30] To further understand the improved electrocatalytic activity of Au@NiO nanotubes for glucose oxidation, electrochemical impedance spectroscopy (EIS) was performed and the corresponding Nyquist and Bode plots are shown in Fig. 7.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, affordable, rapid, and accurate monitoring of glucose level are important in clinical diagnostics and therapy of diabetes mellitus. [1][2][3][4] At present, electrochemical sensors are considered the most practicable glucose monitoring method due to their high sensitivity, low cost, rapid response and easy manipulation. Amongst electrochemical sensors, non-enzymatic glucose sensors have drawn much attention because glucose can be directly oxidized on the electrode surface, which thereby avoids some drawbacks within enzymatic sensors such as susceptibility to different environmental factors.…”

Section: Introductionmentioning

confidence: 99%

“…Amongst electrochemical sensors, non-enzymatic glucose sensors have drawn much attention because glucose can be directly oxidized on the electrode surface, which thereby avoids some drawbacks within enzymatic sensors such as susceptibility to different environmental factors. [1][2][3]5,6 Therefore, the working electrode is vital to non-enzymatic glucose sensors, where the electrochemical signal is generated through the direct electrooxidation of glucose, and its amplitude defines the sensitivity of the sensors.…”

Section: Introductionmentioning

confidence: 99%

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Electrodeposition of Au@NiO Nanotube Arrays for Highly Sensitive Non-enzymatic Glucose Sensing

Zhou

Yin

Zhao

et al. 2021

J. Electron. Mater.

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Au@NiO nanotube arrays were prepared on carbon paper through orderly electrodeposition of ZnO nanorods, Au and NiO, followed by removing ZnO. The morphology and composition of the nanotubes were characterized using scanning electron microscopy, transmission electron microscopy, x-ray diffractometry and x-ray photoelectron spectroscopy. Cyclic voltammetry and amperometric detection were applied to analyze the electrochemical performance of the obtained materials. The Au@NiO nanotubes displayed highly improved electrocatalytic activity for glucose oxidation than that of NiO nanotubes. The optimized Au@NiO nanotube arrays demonstrated excellent glucose sensing performance with a high sensitivity of 5536.2 μA mM −1 cm −2 , a wide linear range of 1-6000 μM and a lower detection limit of 0.25 μM. In addition, the Au@ NiO nanotube sensors also revealed the good feasibility of glucose detection for real serum samples. The enhanced glucose sensing performance of Au@NiO nanotubes may be due to the bifunctional effect of Au (increasing the charge transfer and acting as direct electrocatalyst for glucose oxidation). The electrodeposition of the Au@NiO nanotube arrays may provide a promising strategy for preparing non-enzymatic glucose sensing materials.

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Section: Resultsmentioning

confidence: 70%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrodeposition of Au@NiO Nanotube Arrays for Highly Sensitive Non-enzymatic Glucose Sensing

Zhou

Yin

Zhao

et al. 2021

J. Electron. Mater.

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“…Yao et al modified a porous Au/Ni layer on the surface of boron-doped diamond (BDD) to achieve a rapid response to glucose. 25 Gao et al synthesized spherical Au@Ni nanoparticles with a core−shell structure in oleylamine by a seed-mediated method, which can prevent the poisoning phenomenon of chloride ions to the electrode in the process of glucose catalysis. 26 Wang et al prepared the dendrite AuNi nanoarray with good photocatalytic activity for glucose oxidation by simple one-step electrodeposition.…”

Section: ■ Introductionmentioning

confidence: 99%

Glucose Biosensors Based on Pinecone-Shaped Au and Ni Nanoparticle Composite Microelectrodes

Chen

Liu

Xiao

et al. 2022

ACS Appl. Nano Mater.

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Glucose concentration in the body is a very important index for health evaluation. Nonenzymatic glucose biosensors attract persistent interest and research. The acupuncture technique has been developed for treating the disease for thousands of years. Here, a stainless-steel acupuncture needle (AN) was first used to sense glucose after functionalizing with bimetal of gold nanoparticles (AuNPs) and nickel nanoparticles (NiNPs). AuNPs were electrodeposited as particle clusters, and the NiNPs could be further electrodeposited around AuNPs to form a nano-pinecone shape with a size of about 600 nm. Au/AN exhibited the best electroconductivity compared to the weakest Ni/AN and medium Ni/Au/AN interfaces. Three nanotechnically processed interfaces showed obvious electrochemical response behavior for glucose compared with the bare AN. Surprisingly, the matrix of AuNPs could drastically boost the electrochemical response of NiNPs for glucose, which might be due to the abundance of active sites in the bimetallic hierarchy. The Ni/Au/AN electrode possessed an additive signal compared with Au/AN and Ni/AN. Under the optimized conditions, the prepared nonenzymatic biosensor exhibited two linear relationships in the wide concentration range of 0.5 μM to 1.5 mM and 1.5–5 mM with sensitivities of 766.02 and 368.77 (μA/mM/cm2), and the limit of detection was 0.14 μM. Moreover, the Ni/Au/AN showed superior performance over reported electrodes with great selectivity, stability, and reproducibility. The apparent K m of 0.161 mM was lower than that of glucose oxidase, implying that the Ni/Au-modified AN exhibited a strong affinity for glucose. The fabricated biosensor can be successfully used for the detection of glucose concentration in human serum, which provided a leading direction and potential for clinical point-of-care monitoring.

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Laser‐Engraved Boron‐Doped Diamond for Copper Catalyzed Non‐Enzymatic Glucose Sensing

Gao

Zhang

Zhao

et al. 2022

Adv Materials Inter

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oxidase has opened up the horizon for continuous glucose monitoring. However, enzymatic glucose sensors showcase slow response, low sensitivity, complex immobilization process, and they are susceptible to temperature, humidity, and pH variations. [5][6][7] Therefore, the development of fabrication methods for high-performance nonenzymatic glucose sensors needs to be explored.In nonenzymatic glucose sensors, catalytic sensing is performed using transition metals immobilized on conductive substrates. [8,9] The role of transition metals is demonstrated in the recently established d-band model, in which the d-band center of the transition metal serves as an electronic descriptor to evaluate the binding strength of the reaction intermediate on the metal. [10,11] When the adsorbate molecule approaches the metal surface, its energy levels are shifted by the metal electrons. Although the wide s-band of the metal only shifts and broadens the electronic state of the molecule, [12] the narrow d-band with large density of states (DOS) splits the electronic state of the molecule into bonding and antibonding states, which determine the chemisorption and desorption processes. As a result, the d-band center can be adopted as a descriptor to evaluate catalytic performance. [13,14] Among all transition metals, Cu is one of the most widely utilized transition metal catalysts, offering great potential as an ideal electrocatalyst for glucose oxidation. [9,15] The sensing capability of an electrocatalyst is affected by its support material. [16,17] In comparison with conductive carbonbased materials such as graphene [18] and carbon nanotubes, [16] boron-doped diamond (BDD) has a wide semiconductor bandgap (E g = 5.47 eV), wide electrochemical window, and excellent stability. Thus, it serves as an ideal electrode material for sensing applications that demand low background currents and high signal-to-noise (S/N) ratios. [19,20] For instance, Pinar et al. [21] achieved the simultaneous detection of epinephrine and lidocaine using a BDD electrode by taking advantage of its wide electrochemical window. The high S/N ratio of BDD electrodes enables electrophysiological recording, dopamine sensing, [22] and real-time drug tracking. [23] However, because BDD is electrochemically inert and has poor glucose sensitivity, decorating BDD electrodes with transition metals may offer a unique opportunity for the development of glucose sensors with ultrahigh sensitivity and improved stability. Robust and high-performance electrochemical electrodes for non-enzymatic glucose sensing are in constant demand. Herein, a hierarchical nonenzymatic glucose sensing electrode on boron-doped diamond (BDD) is fabricated using high-speed laser engraving and pulsed electrodeposition of Cu nanostructures. The obtained electrode contains a densely packed Cu nanoflake (CuNF) array periodically decorated on the laser-engraved BDD. The hierarchical nanoarchitecture combines the d-band catalytic activity of the CuNFs with the low capacitive background current of the engra...

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Fabrication of Au/Ni/boron-doped diamond electrodes via hydrogen plasma etching graphite and amorphous boron for efficient non-enzymatic sensing of glucose

Cited by 15 publications

References 45 publications

Electrodeposition of Au@NiO Nanotube Arrays for Highly Sensitive Non-enzymatic Glucose Sensing

Electrodeposition of Au@NiO Nanotube Arrays for Highly Sensitive Non-enzymatic Glucose Sensing

Glucose Biosensors Based on Pinecone-Shaped Au and Ni Nanoparticle Composite Microelectrodes

Laser‐Engraved Boron‐Doped Diamond for Copper Catalyzed Non‐Enzymatic Glucose Sensing

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