Electrochemistry Application — Metal-Organic Framework Glass Catalysts from Melting Glass-Forming Cobalt-Based Zeolitic Imidazolate Framework for Boosting Photoelectrochemical Water Oxidation

11 measurement groups · 24 results

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

Applied bias photon-to-current efficiency (ABPE)

Co-agZIF-62/NiO/BiVO4 photoanode · Electrode

Calculated from current-potential curves under AM 1.5G light

Geometry: photoanode
Context: BiVO4-based photoanodes
Measurement source: 5 · Results and Discussion · Figure 3e

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Maximum ABPE for BiVO4	0.17%	—	—	Text Exact Reported	5 · Results and Discussion · Figure 3e
Maximum ABPE for Co-agZIF-62/BiVO4	1.16%	—	—	Text Exact Reported	5 · Results and Discussion · Figure 3e
Maximum ABPE for Co-agZIF-62/NiO/BiVO4Marked as a best value within this paper	1.67% at 0.74 V vs RHE	—	—	Text Exact Reported	5 · Results and Discussion · Figure 3e

Transient-state photocurrent / chopped chronoamperometry

Photoresponse and photoelectrochemistry Chronoamperometry

Co-agZIF-62/NiO/BiVO4 photoanode · Electrode

Cathodic photocurrent peaks under chopped illumination; charge storage versus applied bias

Geometry: photoanode
Context: BiVO4, Co-agZIF-62/BiVO4 and Co-agZIF-62/NiO/BiVO4
Measurement source: 8 · Results and Discussion · Figure 4f; Figures S26-S27

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source

Electrochemical impedance spectroscopy (EIS)

Impedance spectroscopy

Co-agZIF-62/NiO/BiVO4 photoanode · Electrode

Interfacial kinetics of BiVO4-based photoanodes during OER

Geometry: photoanode/electrolyte interface
Context: BiVO4, Co-agZIF-62/BiVO4 and Co-agZIF-62/NiO/BiVO4
Measurement source: 6 · Results and Discussion · Figure 3f

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
BiVO4 charge transfer resistance	374.0 ohm	—	—	Text Exact Reported	6 · Results and Discussion · Figure 3f
Co-agZIF-62/BiVO4 charge transfer resistance	128.3 ohm	—	—	Text Exact Reported	6 · Results and Discussion · Figure 3f
Co-agZIF-62/NiO/BiVO4 charge transfer resistanceMarked as a best value within this paper	82.4 ohm	—	—	Text Exact Reported	6 · Results and Discussion · Figure 3f

EIS

Impedance spectroscopy

Co-agZIF-62/NiO/WO3 photoanode · Electrode

EIS curves of WO3 and Fe2O3 composite/control photoanodes in their electrolytes

Geometry: photoanode/electrolyte interface
Context: WO3 and Fe2O3 universal-applicability tests
Measurement source: 24 · Supporting Figures · Figures S24-S25

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Reduced EIS semicircle after Co-agZIF-62/NiO on WO3 and Fe2O3	Co-agZIF-62/NiO/WO3 and Co-agZIF-62/NiO/Fe2O3 show reduced charge transfer resistances versus pristine controls	—	—	Text Qualitative	6 · Results and Discussion · Figures S22-S25

Intensity-modulated photocurrent spectroscopy (IMPS)

Photoresponse and photoelectrochemistry

Co-agZIF-62/NiO/BiVO4 photoanode · Electrode

0.5 M KBi (pH 9.5), white LED modulated illumination, 0.1 Hz to 100 kHz; various potentials

Geometry: photoanode
Context: BiVO4, Co-agZIF-62/BiVO4 and Co-agZIF-62/NiO/BiVO4
Measurement source: 9 · Results and Discussion · Figure 5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
IMPS charge transfer and recombination rankingMarked as a best value within this paper	Co-agZIF-62/NiO/BiVO4 has highest Ktrans and lowest Krec	—	—	Text Qualitative	9 · Results and Discussion · Figure 5d-f

Incident photon-to-current conversion efficiency (IPCE)

Photoresponse and photoelectrochemistry

Co-agZIF-62/NiO/BiVO4 photoanode · Electrode

Monochromatic irradiation; reported value at 440 nm

Geometry: photoanode
Context: BiVO4-based photoanodes
Measurement source: 5 · Results and Discussion · Figure 3d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
IPCE at 440 nm for Co-agZIF-62/NiO/BiVO4Marked as a best value within this paper	90.8% at 440 nm	—	—	Text Exact Reported	5 · Results and Discussion · Figure 3d

Linear sweep voltammetry (LSV), chopped and continuous

Voltammetry

Co-agZIF-62/NiO/BiVO4 photoanode · Electrode

Three-electrode cell in 0.5 M KBi electrolyte (pH 9.5), AM 1.5G simulated sunlight, 100 mW cm-2; photocurrent density at 1.23 V vs RHE

Geometry: 1 cm2 photoanode working area
Context: BiVO4, NiO/BiVO4, Co-agZIF-62/BiVO4 and Co-agZIF-62/NiO/BiVO4 compared
Measurement source: 5 · Results and Discussion · Figure 3b,c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
BiVO4 photocurrent density at 1.23 V vs RHE	1.43 mA cm-2	—	—	Text Exact Reported	5 · Results and Discussion · Figure 3b,c
Co-agZIF-62/BiVO4 photocurrent density at 1.23 V vs RHE	3.82 mA cm-2	—	—	Text Exact Reported	5 · Results and Discussion · Figure 3b,c
Co-agZIF-62/NiO/BiVO4 photocurrent density at 1.23 V vs RHEMarked as a best value within this paper	5.34 mA cm-2	—	—	Text Exact Reported	5 · Results and Discussion · Figure 3b,c
Co-agZIF-62/NiO/BiVO4 improvement over BiVO4Marked as a best value within this paper	approximately 3.73 times higher than BiVO4	—	approximately	Text Approximate	5 · Results and Discussion · Figure 3b,c
Co-agZIF-62/NiO/BiVO4 improvement over NiO/BiVO4Marked as a best value within this paper	approximately 1.87 times higher than NiO/BiVO4	—	approximately	Text Approximate	5 · Results and Discussion · Figure 3b,c
NiO/BiVO4 photocurrent density at 1.23 V vs RHE	2.85 mA cm-2	—	—	Text Exact Reported	5 · Results and Discussion · Figure 3b,c

LSV

Voltammetry

Co-agZIF-62/NiO/Fe2O3 photoanode · Electrode

1 M NaOH electrolyte under AM 1.5G simulated sunlight, 100 mW cm-2

Geometry: photoanode
Context: Fe2O3 versus Co-agZIF-62/NiO/Fe2O3
Measurement source: 23 · Supporting Figures · Figure S23

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Approximate Co-agZIF-62/NiO/Fe2O3 photocurrent near 1.7 V vs RHEMarked as a best value within this paper	approximately 2.8 mA cm-2 near 1.7 V vs RHE from Figure S23	—	visual estimate	Figure Axis Approximate	23 · Supporting Figures · Figure S23

LSV

Voltammetry

Co-agZIF-62/NiO/WO3 photoanode · Electrode

0.5 M Na2SO4 electrolyte under AM 1.5G simulated sunlight, 100 mW cm-2

Geometry: photoanode
Context: WO3 versus Co-agZIF-62/NiO/WO3
Measurement source: 23 · Supporting Figures · Figure S22

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Approximate Co-agZIF-62/NiO/WO3 photocurrent near 1.5 V vs RHEMarked as a best value within this paper	approximately 2.0 mA cm-2 near 1.5 V vs RHE from Figure S22	—	visual estimate	Figure Axis Approximate	23 · Supporting Figures · Figure S22

Chronoamperometry stability and gas chromatography

Chronoamperometry

Co-agZIF-62/NiO/BiVO4 photoanode · Electrode

1.23 V vs RHE in KBi electrolyte under AM 1.5G; H2/O2 measured by online GC

Atmosphere: Ar carrier gas for GC
Geometry: photoanode
Context: BiVO4, NiO/BiVO4 and Co-agZIF-62/NiO/BiVO4
Measurement source: 9 · Results and Discussion · Figure 6a,b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Faradaic efficiency for gas evolution	about 97%	—	about	Text Approximate	9 · Results and Discussion · Figure 6b
H2 evolved after 10 h	938.8 umol after 10 h irradiation	—	—	Text Exact Reported	9 · Results and Discussion · Figure 6b
O2 evolved after 10 h	469.4 umol after 10 h irradiation	—	—	Text Exact Reported	9 · Results and Discussion · Figure 6b
Co-agZIF-62/NiO/BiVO4 photocurrent retention after 20 hMarked as a best value within this paper	about 93.8% of initial photocurrent density after 20 h	—	about	Text Approximate	9 · Results and Discussion · Figure 6a

Surface charge transfer efficiency from Jph/Jsulfite

Co-agZIF-62/NiO/BiVO4 photoanode · Electrode

0.5 M KBi (pH 9.5) with Na2SO3 hole scavenger under AM 1.5G illumination; reported at 1.23 V vs RHE

Geometry: photoanode
Context: BiVO4-based photoanodes
Measurement source: 8 · Results and Discussion · Figure 4e

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
BiVO4 surface charge transfer efficiency at 1.23 V vs RHE	33.4%	—	—	Text Exact Reported	8 · Results and Discussion · Figure 4e
Co-agZIF-62/BiVO4 surface charge transfer efficiency at 1.23 V vs RHE	77.5%	—	—	Text Exact Reported	8 · Results and Discussion · Figure 4e
Co-agZIF-62/NiO/BiVO4 surface charge transfer efficiency at 1.23 V vs RHEMarked as a best value within this paper	93.4%	—	—	Text Exact Reported	8 · Results and Discussion · Figure 4e