Electrochemistry Application — Enhanced bioelectrochemical performance caused by porous metal-organic framework MIL-53(Fe) as the catalyst in microbial fuel cells

5 measurement groups · 24 results

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

Cyclic voltammetry (CV)

Voltammetry

MIL-53(Fe)-coated glassy carbon electrode · Electrode

CHI660E electrochemical workstation; conventional three-electrode system; 50 mM PBS; GCE coated catalyst working electrode; SCE reference electrode; Pt sheet counter electrode; O2-saturated and O2-free PBS for ORR comparison.

Atmosphere: O2-saturated and O2-free PBS electrolyte
Geometry: three-electrode GCE working electrode vs SCE
Context: MIL-53(Fe)-coated GCE; ORR catalyst test
Measurement source: 2,4-5 · 2.3; 3.2 · Fig. 4a-b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CV oxidation peak potential	-0.26 V vs SCE	—	—	Text Rounded Reported	4 · 3.2 · Fig. 4a
Oxidation peak current vs scan speed R2	R2 = 0.960	—	—	Text Exact Reported	5 · 3.2 · Fig. 4c
CV reduction peak potential	-0.05 V vs SCE	—	—	Text Rounded Reported	4 · 3.2 · Fig. 4a
Reduction peak current vs scan speed R2	R2 = 0.904	—	—	Text Exact Reported	5 · 3.2 · Fig. 4c
CV scan rates	10, 25, 50, 75, 100 mV/s	—	—	Caption Exact Reported	4 · Figure caption · Fig. 4b

Linear sweep voltammetry (LSV)

Voltammetry

MIL-53(Fe)/SS air cathode · Electrode

LSV comparison of MIL-53(Fe)/SS and bare SS under the electrochemical test conditions reported for ORR.

Atmosphere: PBS electrolyte; gas condition not specified for Fig. 4d
Geometry: electrode potential vs SCE
Context: MIL-53(Fe)/SS composite compared with bare SS control
Measurement source: 4-5 · 3.2 · Fig. 4d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Maximum current of MIL-53(Fe) electrodeMarked as a best value within this paper	approximately 0.05 mA	—	approximately	Text Approximate	5 · 3.2 · Fig. 4d
Maximum current of bare SS electrode	approximately 0.005 mA	—	approximately	Text Approximate	5 · 3.2 · Fig. 4d

MFC power density and polarisation curves

Single-compartment MFC with MIL-53(Fe)/SS cathode · Electrode

When voltage was stable, resistance was gradually reduced from 2000 ohm to 20 ohm to obtain power-density and polarisation curves.

Atmosphere: operating MFC
Geometry: single-compartment MFC with MIL-53(Fe)/SS cathode; compared to bare SS cathode MFC
Context: MIL-53(Fe)/SS composite cathode versus bare SS control
Measurement source: 5-6 · 3.3. Air-cathode performance in MFC · Fig. 5a-c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cathode-limited MFC performance	anode potential slightly changed whereas cathode potential significantly changed	—	—	Qualitative Qualitative	6 · 3.3 · Fig. 5c
Power-curve resistance sweep end	20 ohm	—	—	Text Exact Reported	6 · 3.3 · Fig. 5a-b
Power-curve resistance sweep start	2000 ohm	—	—	Text Exact Reported	6 · 3.3 · Fig. 5a-b
Open-circuit voltage of MIL-53(Fe)/SS MFC	650 mV	0.65 V	—	Text Exact Reported	6 · 3.3 · Fig. 5b
Maximum power density of bare SS MFC	5.4 mW/m2	5.4 mW/m2	—	Text Exact Reported	6 · 4. Conclusions · Fig. 5b
Power-density enhancement over bare electrodeMarked as a best value within this paper	73.5 times	—	—	Text Exact Reported	6 · 3.3; Conclusions · Fig. 5b
Maximum power density of MIL-53(Fe)/SS MFCMarked as a best value within this paper	397 +/- 6.3 mW/m2	397 mW/m2	+/- 6.3 mW/m2	Text Exact Reported	1,6 · Abstract; 3.3; Conclusions · Fig. 5b
Current density at peak MIL-53(Fe)/SS power density	approximately 1.25 mA/m2 from Fig. 5b peak position	—	visual estimate from axis	Visual Estimate Approximate	5 · Figure · Fig. 5b

Single-compartment microbial fuel cell operation

Single-compartment MFC with MIL-53(Fe)/SS cathode · Electrode

Cathode on one side of MFC; catalytic layer facing anode across PEM; graphite felt anode 5.0 cm diameter; titanium wire; anaerobic activated sludge; 1000 mg/L glucose and 50 mM PBS medium refreshed when voltage below 0.02 V.

Atmosphere: anaerobic anode chamber; air cathode
Geometry: anode chamber 3.0 cm long, 2.5 cm radius; single-compartment MFC
Context: MIL-53(Fe)/SS cathode in MFC
Measurement source: 3 · 2.5. MFC structure and initiation

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MFC initiation external resistance	510 ohm	—	—	Text Exact Reported	3 · 2.5
MFC glucose concentration	1000 mg/L glucose	—	—	Text Exact Reported	3 · 2.5
MFC PBS concentration	50 mM PBS	—	—	Text Exact Reported	3 · 2.5

Voltage versus time cycling

Single-compartment MFC with MIL-53(Fe)/SS cathode · Electrode

Continuous MFC output voltage recorded; Fig. 5d caption states external resistance of 500 ohm.

Atmosphere: operating MFC
Geometry: single-compartment MFC with MIL-53(Fe)/SS cathode; bare SS control
Context: MIL-53(Fe)/SS composite cathode versus bare SS control
Measurement source: 5-6 · 3.3 · Fig. 5d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Stable-output duration	one week	7 days	—	Text Exact Reported	6 · 3.3 · Fig. 5d
Continuous-operation durability duration	maximum voltage did not decrease in one month of continuous operation	—	—	Text Exact Reported	6 · 3.3 · Fig. 5d
Stable voltage output of MIL-53(Fe)/SS MFC	approximately 0.37 V with little change in one week	0.37 V	approximately	Text Approximate	1,6 · Abstract; 3.3 · Fig. 5d
Maximum voltage enhancement over bare electrodeMarked as a best value within this paper	7.64 times	—	—	Text Exact Reported	6 · 3.3 · Fig. 5d
Maximum voltage of MIL-53(Fe)/SS MFCMarked as a best value within this paper	0.42 V	0.42 V	—	Text Exact Reported	6 · 3.3 · Fig. 5d
Displayed voltage-time duration	approximately 700 h shown on Fig. 5d x-axis	—	visual estimate from axis	Figure Axis Approximate	5 · Figure · Fig. 5d