Electrical Transport — Construction of nanozyme based with mixed valence manganese oxide loaded on defective metal-organic frameworks for sensitive detection of biomarker procalcitonin

3 measurement groups · 6 results

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

chronoamperometry (i-t)

Chronoamperometry

MdP nanoparticles · Powder

Chronoamperometry i-t curves of dPCN-224 and MdP in 0.10 mol L-1 Na2SO4(aq), with TMB addition during the run.

Geometry: Three-electrode electrochemical cell with Ag/AgCl reference electrode (CHI111), platinum wire counter electrode (CHI115), and catalyst-modified glassy carbon working electrode (CHI104, d=3 mm); catalyst ink contained 5.0 mg catalyst powder, 5.0 mg conductive carbon, 0.10 mL 5.0 wt% Nafion and 1.0 mL ethanol; 10 uL ink drop-cast and infrared-lamp dried.
Context: target composite compared with pristine dPCN-224 control
Measurement source: SI text · 1.6 Electrochemical measurement

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
TMB addition triggers oxidation current in MdP	oxidation current triggered by addition of TMB substrate	—	—	Text Qualitative	7 · 3.4 Catalytic mechanism · Fig. 4L

electrochemical impedance spectroscopy (EIS)

Impedance spectroscopy

MdP nanoparticles · Powder

EIS Nyquist curves of dPCN-224 and MdP; electrolyte 0.10 mol L-1 K3[Fe(CN)6]/K4[Fe(CN)6](aq), 0.24 V versus Ag/AgCl, 10^6 to 10^-1 Hz, 5 mV AC amplitude.

Geometry: Three-electrode electrochemical cell with Ag/AgCl reference electrode (CHI111), platinum wire counter electrode (CHI115), and catalyst-modified glassy carbon working electrode (CHI104, d=3 mm); catalyst ink contained 5.0 mg catalyst powder, 5.0 mg conductive carbon, 0.10 mL 5.0 wt% Nafion and 1.0 mL ethanol; 10 uL ink drop-cast and infrared-lamp dried.
Context: target composite compared with pristine dPCN-224 control
Measurement source: SI text · 1.6 Electrochemical measurement

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MdP lower impedance than dPCN-224	impedance of MdP was significantly lower than that of dPCN-224	—	—	Text Qualitative	7 · 3.4 Catalytic mechanism · Fig. 4K
Approximate MdP Nyquist semicircle diameter	approximately 120 ohm	—	visual estimate	Visual Estimate Approximate	7 · 3.4 Catalytic mechanism · Fig. 4K

linear sweep voltammetry (LSV)

Voltammetry

MdP nanoparticles · Powder

LSV curves of dPCN-224 and MdP; electrolyte 0.10 mol L-1 Na2SO4(aq), -0.50 to 2.0 V versus Ag/AgCl, scan rate 10 mV s-1.

Geometry: Three-electrode electrochemical cell with Ag/AgCl reference electrode (CHI111), platinum wire counter electrode (CHI115), and catalyst-modified glassy carbon working electrode (CHI104, d=3 mm); catalyst ink contained 5.0 mg catalyst powder, 5.0 mg conductive carbon, 0.10 mL 5.0 wt% Nafion and 1.0 mL ethanol; 10 uL ink drop-cast and infrared-lamp dried.
Context: target composite compared with pristine dPCN-224 control
Measurement source: SI text · 1.6 Electrochemical measurement

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Approximate dPCN-224 LSV current density at 2.5 V vs Ag/AgCl	approximately 1.5 mA cm-2 at 2.5 V	—	visual estimate from axis	Visual Estimate Approximate	7 · 3.4 Catalytic mechanism · Fig. 4J
Approximate MdP LSV current density at 2.5 V vs Ag/AgCl	approximately 5 mA cm-2 at 2.5 V	—	visual estimate from axis	Visual Estimate Approximate	7 · 3.4 Catalytic mechanism · Fig. 4J
MdP higher LSV current than dPCN-224	MdP composites have better conductivity than dPCN-224, resulting in a higher current	—	—	Text Qualitative	7 · 3.4 Catalytic mechanism · Fig. 4J