Phosphomolybdic acid functionalized graphene loading copper nanoparticles modified electrodes for non-enzymatic electrochemical sensing of glucose

Xu, Jian; Cao, Xiyue; Xia, Jianfei; Gong, Shida; Wang, Zonghua; Lü, Lin

doi:10.1016/j.aca.2016.06.033

Cited by 34 publications

(8 citation statements)

References 49 publications

(40 reference statements)

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“…GCE was polished with 0.3‐ and 0.05‐μm Al 2 O 3 powder to obtain a mirror‐like surface. Then it was rinsed in ethanol and deionized water and dried in N 2 . The sample of Cu 3 (HHTP) 2 was dispersed as a suspension in water.…”

Section: Methodsmentioning

confidence: 99%

Two‐dimensional π‐conjugated metal‐organic framework with high electrical conductivity for electrochemical sensing

Fang

Yang

et al. 2018

J Chinese Chemical Soc

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A two-dimensional π-conjugated metal-organic framework (MOF) with long-range delocalized electrons has been prepared and applied as modified electrode material without further post-modification. The MOF (Cu 3 (HHTP) 2 ) is composed of Cu(II) centers and a redox-active linker (2,3,6,7,10, HHTP). Compared to most MOFs, Cu 3 (HHTP) 2 displays higher electrical conductivity and charge storage capacity owing to the collective effect of metal ions and aromatic ligands with π-π conjugation. In order to confirm the superior properties of this material, the electrochemical detection of dopamine (DA) was conducted and the satisfactory results were obtained. The currents increase linearly with the concentration of DA in the range 5.0 × 10 −8 to 2.0 × 10 −4 M with a detection limit of 5.1 nM. Furthermore, Cu 3 (HHTP) 2 presents high selectivity and applicability in serum samples for electrochemical DA sensing. Overall, this material has excellent potential as a promising platform for establishing an MOF-based electrochemical sensor. K E Y W O R D S electrical conductivity, electrochemistry, metal-organic frameworks, twodimensional π-conjugated

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Section: Methodsmentioning

confidence: 99%

Two‐dimensional π‐conjugated metal‐organic framework with high electrical conductivity for electrochemical sensing

Fang

Yang

et al. 2018

J Chinese Chemical Soc

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“…The chemical synthesis methods may require high-temperature treatment, hydrothermal reaction, or other complex technological processes. [38][39][40] In addition, nanocomposite materials usually need to be modified on hard substrates, such as glassy carbon electrodes, [41] silicon dioxide, [42] etc., which limits the application of sensors to wearable devices.…”

Section: Introductionmentioning

confidence: 99%

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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“…(2) A nitrogen atom connect with two carbon atoms producing a six-member pyridine ring, but a carbon atom lost from another C-N bond and induce the formation of deficiency in graphene plane. (3) A nitrogen atom still connect with two carbon atoms, but it produces a five-member pyrrole ring, also a carbon atom lost from another C-N bond and induce the formation of another deficiency in graphene plane [15][16][17] . However, how did the phosphomolybdic acid combined with nitrogen-doped graphene according to different mode?…”

Section: Introductionmentioning

confidence: 99%

DFT Study on Capacitive Property of Composites Built by Phosphomolybdic Acid with Nitrogen-Doped Graphene

Zhou

Wang

Fan

et al. 2021

J Inorg Organomet Polym

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Three kinds of composites were built by nitrogen-doped grapheme and phosphomolybdic acid. Based on the density functional theory, the combined energies, charge populations, orbital distributions and densities of states (DOS) were calculated. The results show that the short rage interaction can be formed between oxygen atom and nitrogen atom, and the charge can be transferred from phosphomolybdic acid to graphene. It is found that the conductive bands (CB) of phosphomolybdic acid move to lower level energy and there are more valence bands (VB) in composites from DOS. It is revealed that composites have the higher electric capacity due to nitrogen-doped graphene can receive more electrons from phosphomolybdic acid.

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Phosphomolybdic acid functionalized graphene loading copper nanoparticles modified electrodes for non-enzymatic electrochemical sensing of glucose

Cited by 34 publications

References 49 publications

Two‐dimensional π‐conjugated metal‐organic framework with high electrical conductivity for electrochemical sensing

Two‐dimensional π‐conjugated metal‐organic framework with high electrical conductivity for electrochemical sensing

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

DFT Study on Capacitive Property of Composites Built by Phosphomolybdic Acid with Nitrogen-Doped Graphene

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