Electrochemistry Application — Phthalocyanine-Based Two-Dimensional Conductive Metal-Organic Framework as Electrochemical Sensor for Highly Sensitive Detection of Nifedipine

Measurement evidence

Electrochemistry Application

Phthalocyanine-Based Two-Dimensional Conductive Metal-Organic Framework as Electrochemical Sensor for Highly Sensitive Detection of Nifedipine · Liu Y., Peng J., Zhuge W. et al. · Journal of the Electrochemical Society · 2022 · 046502

5 measurement groups · 12 results

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

chronocoulometry

bare GCE · Electrode

0.1 M KCl containing 1.0 mM Fe(CN)6]3-/[Fe(CN)6]4-; Anson equation used to determine effective surface area.

Geometry
bare GCE working electrode
Context
bare electrode control
Measurement source
4 · Chronocoulometry studies · Figure 2D-E
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
effective surface area1.04 cm2Text
Exact Reported
4 · Chronocoulometry studies · Figure 2E
Q versus t^1/2 slope-312 uC s-1/2Text
Exact Reported
4 · Chronocoulometry studies · Figure 2E

chronocoulometry

CoPc-Cu MOF/GCE · Electrode

0.1 M KCl containing 1.0 mM Fe(CN)6]3-/[Fe(CN)6]4-; Anson equation used to determine effective surface area.

Geometry
CoPc-Cu MOF/GCE working electrode
Context
MOF-coated composite electrode
Measurement source
4 · Chronocoulometry studies · Figure 2D-E
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
effective surface areaMarked as a best value within this paper1.40 cm2Text
Exact Reported
4 · Chronocoulometry studies · Figure 2E
Q versus t^1/2 slopeMarked as a best value within this paper-420 uC s-1/2Text
Exact Reported
4 · Chronocoulometry studies · Figure 2E

chronocoulometry

CoPc/GCE · Electrode

0.1 M KCl containing 1.0 mM Fe(CN)6]3-/[Fe(CN)6]4-; Anson equation used to determine effective surface area.

Geometry
CoPc/GCE working electrode
Context
CoPc-coated control electrode
Measurement source
4 · Chronocoulometry studies · Figure 2D-E
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
effective surface area1.35 cm2Text
Exact Reported
4 · Chronocoulometry studies · Figure 2E
Q versus t^1/2 slope-405 uC s-1/2Text
Exact Reported
4 · Chronocoulometry studies · Figure 2E

cyclic voltammetry (CV)

CoPc-Cu MOF/GCE · Electrode

20 uM NIF in 10 ml 0.2 M PBS buffer (pH 7.0), comparing bare GCE, CoPc/GCE, and CoPc-Cu MOF/GCE; blank buffer also measured.

Geometry
three-electrode cell with modified GCE working electrode, Pt wire counter electrode, Ag/AgCl reference electrode
Context
composite sensor with pristine/control electrodes
Measurement source
4 · Electrochemical behavior of NIF on CoPc-Cu MOF-modified electrodes · Figure 2A-B
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
NIF oxidation peak response versus controlsMarked as a best value within this paperCoPc-Cu MOF/GCE oxidation peak significantly higher than bare GCE and CoPc/GCEText
Qualitative
4 · Electrochemical behavior of NIF on CoPc-Cu MOF-modified electrodes · Figure 2B

cyclic voltammetry scan-rate study

CoPc-Cu MOF/GCE · Electrode

20 uM NIF; scan rates from 10 to 100 mV s-1.

Temperature
298
Geometry
CoPc-Cu MOF/GCE working electrode
Context
MOF-coated composite electrode
Measurement source
4 · Effect of scan rate · Figure 2F
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
charge-transfer coefficient alpha0.50Text
Exact Reported
4 · Effect of scan rate
electrons transferred in NIF oxidation1.89, approximately equal to 2Text
Exact Reported
4 · Effect of scan rate · Scheme 1
Ep versus ln(scan rate) slopeEp = 0.0276 ln v + 0.866R2 = 0.9946Text
Exact Reported
4 · Effect of scan rate · Figure 2F
Ip versus scan-rate regression slopeIp = 24.44 v + 1.058R2 = 0.9956Text
Exact Reported
4 · Effect of scan rate · Figure 2F
scan-rate range10 to 100 mV s-1Text
Range
4 · Effect of scan rate · Figure 2F