Glucose sensor based on porous Ni by using a graphene bottom layer combined with a Ni middle layer

Ren, Zhaodi; Mao, Haochao; Luo, Haowen; Liu, Yuanan

doi:10.1016/j.carbon.2019.04.073

Cited by 42 publications

(24 citation statements)

References 40 publications

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“…The increase of current at both anodic and cathodic peaks in the presence of glucose are similar to the results reported in [ 53 ]. We propose that when glucose was added, more NiOOH were needed to react with glucose (see Reaction (5)), which promoted the oxidation process (see Reaction (4)) and the anodic peak current.…”

Section: Resultssupporting

confidence: 90%

“…For enzyme-free glucose detection, the transition metals (e.g., Ni, Cu, Co) and their oxides are widely used as the metal catalysts due to their high sensitivity, good stability and low-cost [ 51 , 52 ]. Among them, Ni-based materials have received great attention due to their higher sensitivity than other metals which is attributed to the high catalytic activity of NiOOH produced by Ni(OH) 2 [ 53 ]. To illustrate the EC sensing potentiality of the edge-rich GM, a high-sensitivity glucose detection was conducted on the graphene/Ni hybrid mesh (Ni template was not etched).…”

Section: Resultsmentioning

confidence: 99%

“…Obviously, when the concentration of glucose increased, a remarkable increase of the current intensity and a slight positive shift of the potential at anodic peak were observed; while the cathodic peak potential was almost stable, suggesting good electrocatalytic activity of the graphene/Ni hybrid material towards glucose oxidation [ 51 ]. The reactions can be described as the following equations [ 51 , 53 ]:

…”

Section: Resultsmentioning

confidence: 99%

“…The selectivity of the graphene/Ni hybrid mesh V-50 electrode was investigated using some interfering species that normally co-exist with glucose in human blood serum, such as AA, DA, and AA [ 52 ]. The typical level of glucose in human blood is about 30 times higher than the interfering species [ 53 ]. Therefore, the interference experiments were tested by successive additions of 1.0 mM of glucose, 0.1 mM of interfering species, and 0.5 mM of glucose, respectively, into 0.1 M NaOH solution at applied potential of 0.6 V. As displayed in Figure S12 , the responses from the glucose are much higher than those from interfering species, exhibiting a good selectivity of the graphene/Ni hybrid mesh V-50 electrode in using as the glucose sensor.…”

Section: Resultsmentioning

confidence: 99%

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Edge-Rich Interconnected Graphene Mesh Electrode with High Electrochemical Reactivity Applicable for Glucose Detection

et al. 2021

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The development of graphene structures with controlled edges is greatly desired for understanding heterogeneous electrochemical (EC) transfer and boosting EC applications of graphene-based electrodes. We herein report a facile, scalable, and robust method to produce graphene mesh (GM) electrodes with tailorable edge lengths. Specifically, the GMs were fabricated at 850 °C under a vacuum level of 0.6 Pa using catalytic nickel templates obtained based on a crack lithography. As the edge lengths of the GM electrodes increased from 5.48 to 24.04 m, their electron transfer rates linearly increased from 0.08 to 0.16 cm∙s−1, which are considerably greater than that (0.056 ± 0.007 cm∙s−1) of basal graphene structures (defined as zero edge length electrodes). To illustrate the EC sensing potentiality of the GM, a high-sensitivity glucose detection was conducted on the graphene/Ni hybrid mesh with the longest edge length. At a detection potential of 0.6 V, the edge-rich graphene/Ni hybrid mesh sensor exhibited a wide linear response range from 10.0 μM to 2.5 mM with a limit of detection of 1.8 μM and a high sensitivity of 1118.9 μA∙mM−1∙cm−2. Our findings suggest that edge-rich GMs can be valuable platforms in various graphene applications such as graphene-based EC sensors with controlled and improved performance.

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Edge-Rich Interconnected Graphene Mesh Electrode with High Electrochemical Reactivity Applicable for Glucose Detection

et al. 2021

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“…[17] As a result, the studies on the economic glucose oxidation catalysts based on non-precious transition metals (e.g., Cu, Ni, and Co) and their oxides/nitrides/phosphides have gained enormous attention. [18][19][20][21] More importantly, these non-noble metals are steadily performing in the alkaline environment, strongly resistant to interferents (such as halide ions), and highly selective towards glucose. However, the poor conductivity of transition metal compounds facilitates the heterogeneous integration with highly conductive substances to weaken the side-effects caused by the low electron conductivity.…”

Section: Introductionmentioning

confidence: 99%

Learning from Nature: Constructing a Smart Bionic Structure for High‐Performance Glucose Sensing in Human Serums

Tian

Wan

Yong

et al. 2021

Adv Funct Materials

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Traditional noble metal-based catalysts for glucose sensing usually suffer from easy deactivation by halides and weak sensing properties. To unravel these limits, herein, a novel nature-inspired design concept (mimicking a "rock-soil-grass" geotexture system) is purposed to build a free-standing hierarchical micro-nano architecture. Thanks to the design (rigid and conductive Ni foam) ("rock", underlayer, rough and highly disordered graphene nanosheets (GNSs) ("soil", middle-layer), and strong catalytic activity of multiscale grass-like Co 3 O 4 ("grass", top-layer), the bionic structure achieves ultra-high sensitivity, a low limit of detection (120 × 10 −9 m), an extremely short response time, broad linear ranges (two stages: 1-10 000 and 10 000-30 040 µm), good anti-Cl − -poisoning and anti-interference properties, and long-term stability. Besides the structural design, the "gotong-royong" effects (the strong interface coupling and charge transfer between GNSs and Co 3 O 4 and energetically favorable glucose adsorption on Co 3 O 4 ) also contribute to the high sensing properties, as verified by kinetic studies and density functional theory simulation. To determine human blood glucose levels, the self-made glucometer with the self-developed software demonstrates an ultra-high recovery rate (99.0-100.9%), validating the potential for highperformance blood-glucose sensing.

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Highly Sensitive and Flexible Copper Oxide/Graphene Non‐Enzymatic Glucose Sensor by Laser Direct Writing

Yang

Gao

et al. 2023

Advanced Sensor Research

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Accurate and convenient detection of human blood glucose levels is an effective method for early diagnosis of diabetes and prevention of complications. The flexible and wearable electrochemical glucose sensor with low cost, fast responsiveness, good stability, reliability, and high sensitivity has attracted much attention in monitoring glucose concentration. The preparation of a conductive layer with catalytic activity on a flexible substrate is the key to making a wearable glucose sensor. Here, graphene composite materials sintered with copper oxide (CuO) nanoparticles are successfully prepared on a polyimide film by laser direct writing method and fabricated a flexible non‐enzymatic glucose sensor using laser‐engraved graphene (LEG) as a conductive electrode. The CuO/LEG sensor exhibits a high sensitivity of 619.43 μA mm−1 cm−2 in 0–3 mm glucose and 462.96 μA mm−1 cm−2 in 0–8 mm glucose. In addition, the CuO/LEG sensor shows good reproducibility, high anti‐interference capability, and long‐term stability. It also presents good bending stability, which can maintain 82.40% initial current after 100 times bending. Moreover, the CuO/LEG sensor has an obvious step‐ampere response in the detection of sweat samples, indicating the great potential of wearable sweat sensors.

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Glucose sensor based on porous Ni by using a graphene bottom layer combined with a Ni middle layer

Cited by 42 publications

References 40 publications

Edge-Rich Interconnected Graphene Mesh Electrode with High Electrochemical Reactivity Applicable for Glucose Detection

Edge-Rich Interconnected Graphene Mesh Electrode with High Electrochemical Reactivity Applicable for Glucose Detection

Learning from Nature: Constructing a Smart Bionic Structure for High‐Performance Glucose Sensing in Human Serums

Highly Sensitive and Flexible Copper Oxide/Graphene Non‐Enzymatic Glucose Sensor by Laser Direct Writing

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