Enzyme-free glucose sensor based on layer-by-layer electrodeposition of multilayer films of multi-walled carbon nanotubes and Cu-based metal framework modified glassy carbon electrode

Lan, Wu; Lü, Zhiwei; Ye, Jianshan

doi:10.1016/j.bios.2019.03.064

Cited by 109 publications

(45 citation statements)

References 18 publications

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“…Therefore, the sample I was chosen for further studies by chronoamperometry, and the typical CA curve recorded during consecutive additions of D-glucose aliquots to 0.1 M NaOH at potentials of 0.55 V presented on Figure 6 c. The linear range of dependence of the Faraday current on the D-glucose concentration lies between 1 µM and 3 mM, wherein sensitivity and the limit of detection (LOD) were equal to 8.95 µA/mM and 0.26 µM, respectively. Thereby, sodium salt I exhibits sensor properties comparable with those of another copper-based MOFs known from the literature [ 30 , 31 , 32 , 33 ]. Table 5 presents the comparison between fabricated glucose sensor and other recently reported ones.…”

Section: Resultsmentioning

confidence: 66%

“…The linear range of dependence of the Faraday current on the D-glucose concentration lies between 1 µM and 3 mM, wherein sensitivity and the limit of detection (LOD) were equal to 8.95 µA/mM and 0.26 µM, respectively. Thereby, sodium salt I exhibits sensor properties comparable with those of another copperbased MOFs known from the literature [30][31][32][33]. Table 5 presents the comparison between fabricated glucose sensor and other recently reported ones.…”

Section: Sensor Propertiesmentioning

confidence: 60%

“…This difference in sensor properties of the compounds under study cannot be explained by the difference in copper–ligand bonding: both metal–oxygen distances and stretching force constants do not differ so much. According to [ 9 , 30 ], the reaction mechanism involves two steps: Cu(II) − MOF + OH − = Cu(III) − MOF + e − + H 2 O Cu(III) − MOF + Glucose = Cu(II) − MOF + Glucolactone, so, the availability of copper ion for nucleophilic attack can play a crucial role. Probably, the major factor affecting the sensor properties of these compounds is more steric hindrance of copper ion in compounds II and III , where the distance between the copper ion and non-coordinated oxygen ion of phthalate ligands is approximately 10% less compared to that in I .…”

Section: Resultsmentioning

confidence: 99%

“…This difference in sensor properties of the compounds under study cannot be explained by the difference in copper-ligand bonding: both metal-oxygen distances and stretching force constants do not differ so much. According to [9,30], the reaction mechanism involves two steps:…”

Section: Sensor Propertiesmentioning

confidence: 99%

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Structures, Bonding and Sensor Properties of Some Alkaline o-Phthalatocuprates

et al. 2021

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Comprehensive study of the structure and bonding of disodium, dipotassium and diammonium di-o-phthalatocuprates(II) dihydrates has been undertaken. The crystal structure of ammonium o-phthalatocuprate has been determined. The identity of structures of phthalatocuprate chains in potassium and ammonium salts has been revealed. Vibrational spectra of all three compounds have been recorded, and the assignment of vibrational bands has been made. Force field calculations have shown a minor effect of outer-sphere cations (Na+, K+, NH4+) on both intraligand (C-O) and metal–ligand bond strengths. Synthesized compounds have been tested as electrochemical sensors on D-glucose, dopamine and paracetamol. Their sensitivity to analytes varied in the order of Na+ > K+ > NH4+. This effect has been explained by the more pronounced steric hindrance of copper ions in potassium and ammonium salts.

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Section: Resultsmentioning

confidence: 66%

Section: Sensor Propertiesmentioning

confidence: 60%

Section: Resultsmentioning

confidence: 99%

Section: Sensor Propertiesmentioning

confidence: 99%

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Structures, Bonding and Sensor Properties of Some Alkaline o-Phthalatocuprates

et al. 2021

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“…3.3. Selectivity, stability, and reproducibility of the Au-SWCNHs/Au electrodes To evaluate the selectivity of the Au-SWCNHs/Au electrode, we examined the effects of interfering substances like ascorbic acid (AA), uric acid (UA), dopamine (DA), galactose, lactose, sucrose, which typically coexist with glucose in human serum [29]. Therefore, we tested the Au-SWCNHs/Au electrode in a solution where the molar ratio of glucose to each interfering substance was 10:1.…”

Section: Electrochemical Characterization Of the Au-swcnhs/au Eletrodementioning

confidence: 99%

Development of non-enzymatic glucose electrode based on Au nanoparticles decorated single-walled carbon nanohorns

Peng

et al. 2021

J Mater Sci: Mater Electron

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A composite with gold nanoparticles (AuNPs) decorating single-walled carbon nano-horns (SWCNHs) is synthesized and used to modify a gold electrode for non-enzymatic glucose detection. The composite was synthesized by a simple covalent bonding method. The AuNPs with an average particle size of 40 nm are dispersed homogeneously on the surface of the SWCNHs. Therefore, the synergistic effect of the AuNPs and the SWCNHs leads to an excellent glucose sensing performance. The glucose sensing tests indicate that the electrode fabricated has a linear response in the 0.5-2 mM and 4-12 mM glucose concentration range, a high sensitivity (275.33 and 352.5 µA cm − 2 mM − 1 ), and a low detection limit (0.72 µM) (S/N = 3) at + 0.3 V, as well as strong resistance to the interference by ascorbic acid (AA), uric acid (UA), dopamine (DA), galactose, and lactose. When the electrode was used for the detection of glucose in blood samples, the glucose contents detected by the electrode was in right agreement with real. The performance level reached makes the electrode a potential alternative tool for the detection of glucose.

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