Sensing Application — High-performance non-enzymatic glucose detection: Using a conductive Ni-MOF as an electrocatalyst

7 measurement groups · 24 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

Amperometric i-t glucose sensing

Conductive Ni-MOF working electrode · Electrode

0.1 M NaOH at applied potential 0.55 V; successive glucose injections including low concentration range.

Temperature: room temperature
Geometry: three-electrode
Context: Ni-MOF electrode
Measurement source: main p.4, article p.5413 · Amperometric glucose detection · Fig. 3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Selected amperometric applied potentialMarked as a best value within this paper	0.55 V	—	—	Text Exact Reported	main p.4, article p.5413 · Amperometric glucose detection · Fig. 3a
Limit of detectionMarked as a best value within this paper	0.66 uM (S/N = 3)	—	S/N = 3	Text Exact Reported	main p.4, article p.5413 · Amperometric glucose detection · Fig. 3d; Table S1
Low-concentration amperometric response range	1 to 30 uM	—	1-30 uM	Text Range	main p.4, article p.5413 · Amperometric glucose detection · Fig. 3b
Low-concentration linear range	0.001-0.5 mM	—	0.001-0.5 mM	Text Range	main p.4, article p.5413 · Amperometric glucose detection · Fig. 3d inset
Overall glucose detection rangeMarked as a best value within this paper	0.001-8 mM	—	0.001-8 mM	Text Range	main p.2, article p.5411 · Abstract · Table S1
Response time to steady-state currentMarked as a best value within this paper	within 3 s	—	within	Text Rounded Reported	main p.4, article p.5413 · Amperometric glucose detection · Fig. 3c
Glucose sensitivityMarked as a best value within this paper	21744 uA mM-1 cm-2	—	—	Text Exact Reported	main p.4, article p.5413 · Amperometric glucose detection · Fig. 3d; Table S1

Cyclic voltammetry glucose calibration in NaOH

Voltammetry

Conductive Ni-MOF working electrode · Electrode

Glucose concentrations 1.0-8.0 mM in 0.1 M NaOH; potential range 0-0.8 V; scan rate 20 mV s-1.

Temperature: room temperature
Geometry: three-electrode
Context: Ni-MOF electrode
Measurement source: main p.4, article p.5413 · Glucose calibration · Fig. 2d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CV anodic-current linear glucose range in NaOH	1.0-8.0 mM	—	1.0-8.0 mM	Text Range	main p.4, article p.5413 · Glucose calibration · Fig. 2d
CV anodic-current calibration R2 in NaOH	R2 = 0.991	—	—	Text Exact Reported	main p.4, article p.5413 · Glucose calibration · Fig. 2d

Glucose detection in diluted human blood serum

Conductive Ni-MOF working electrode · Electrode

0.1 M NaOH containing 20% human blood serum; glucose 1-8 mM; scan rate 20 mV s-1.

Temperature: room temperature
Geometry: three-electrode
Context: Ni-MOF electrode in serum matrix
Measurement source: main p.4, article p.5413 · Real-sample glucose detection · Fig. 4a-b; Table S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Human serum validation bias upper bound	bias less than 0.20 mM	—	less than	Text Rounded Reported	main p.4, article p.5413 · Real-sample glucose detection · Table S2
Human-serum calibration slope	y = 0.5515x + 2.6492; R2 = 0.997	—	—	Figure Axis Approximate	main p.4, article p.5413 · Real-sample glucose detection · Fig. 4b
Human-serum calibration R2	R2 = 0.997	—	—	Figure Axis Approximate	main p.4, article p.5413 · Real-sample glucose detection · Fig. 4b
Human serum validation RSD upper bound	RSD less than 4%	—	less than	Text Rounded Reported	main p.4, article p.5413 · Real-sample glucose detection · Table S2
Human serum sample 1 measured by conductive Ni-MOF	3.25 mM; medical equipment 3.10 mM; RSD 3.34%; bias 0.15 mM	—	RSD 3.34%; bias 0.15 mM	SI Table Exact Reported	SI p.12 · Table S2 · Table S2
Human serum sample 2 measured by conductive Ni-MOF	4.86 mM; medical equipment 4.90 mM; RSD 1.83%; bias -0.04 mM	—	RSD 1.83%; bias -0.04 mM	SI Table Exact Reported	SI p.12 · Table S2 · Table S2
Human serum sample 3 measured by conductive Ni-MOF	6.69 mM; medical equipment 6.60 mM; RSD 0.96%; bias 0.09 mM	—	RSD 0.96%; bias 0.09 mM	SI Table Exact Reported	SI p.12 · Table S2 · Table S2

Glucose detection in peach juice matrix

Conductive Ni-MOF working electrode · Electrode

NaOH solution containing 20% peach juice; added glucose 1-7 mM; scan rate 20 mV/s.

Temperature: room temperature
Geometry: three-electrode
Context: Ni-MOF electrode in juice matrix
Measurement source: SI p.9 · Supplementary figure · Fig. S6

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Peach-juice calibration slope	y = 0.1057x + 1.0143; R2 = 0.997	—	—	Figure Axis Approximate	SI p.9 · Supplementary figure · Fig. S6b
Peach-juice matrix glucose calibration range	1-7 mM	—	1-7 mM	Caption Range	SI p.9 · Supplementary figure · Fig. S6
Peach-juice calibration R2	R2 = 0.997	—	—	Figure Axis Approximate	SI p.9 · Supplementary figure · Fig. S6b

pH-dependent current response

Conductive Ni-MOF working electrode · Electrode

Conductive Ni-MOF response to 1 mM glucose at pH 10-14; scan rate 20 mV/s.

Temperature: room temperature
Geometry: three-electrode
Context: Ni-MOF electrode
Measurement source: SI p.8 · Supplementary figure · Fig. S5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Selected optimal electrolyte pHMarked as a best value within this paper	pH 13	—	—	Text Exact Reported	main p.3, article p.5412 · pH optimisation · Fig. S5
Current response at pH 13	approximately 1.6 mA at pH 13	—	visual estimate from bar height	Figure Axis Approximate	SI p.8 · Supplementary figure · Fig. S5

Amperometric anti-interference test

Chronoamperometry

Conductive Ni-MOF working electrode · Electrode

0.55 V in 0.1 M NaOH; additions of 1 mM glucose, 2 mM AA, urea, Cl-, L-Cys, Lac, Fru, UA, DA, and 1 mM glucose.

Temperature: room temperature
Geometry: three-electrode
Context: Ni-MOF electrode
Measurement source: main p.5, article p.5414 · Selectivity · Fig. 4c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Interferent response	Insignificant responses to 2 mM AA, urea, Cl-, L-Cys, Lac, Fru, UA and DA compared with 1 mM glucose	—	—	Text Qualitative	main p.5, article p.5414 · Selectivity · Fig. 4c

Long-period stability and electrode-to-electrode reproducibility

Conductive Ni-MOF working electrode · Electrode

Conductive Ni-MOF stored in air; current response tested every five days to 30 days; reproducibility tested with five electrodes toward 1 mM glucose in 0.1 M NaOH.

Temperature: room temperature
Atmosphere: stored in air
Geometry: three-electrode
Context: Ni-MOF electrode
Measurement source: main p.5, article p.5414 · Stability and reproducibility · Fig. 4d; Fig. S7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Five-electrode anodic peak current RSDMarked as a best value within this paper	3.75%	—	—	Text Exact Reported	main p.5, article p.5414 · Reproducibility · Fig. S7
Current retention after 30 daysMarked as a best value within this paper	92.8% of original current after 30 days	0.928 fraction	—	Text Exact Reported	main p.5, article p.5414 · Stability · Fig. 4d