cMOF Evidence Base
Spectroscopy — Co 3 O 4 @Cu-Based Conductive Metal–Organic Framework Core–Shell Nanowire Electrocatalysts Enable Efficient Low-Overall-Potential Water Splitting

Measurement evidence

Spectroscopy

Co 3 O 4 @Cu-Based Conductive Metal–Organic Framework Core–Shell Nanowire Electrocatalysts Enable Efficient Low-Overall-Potential Water Splitting · Hu L., Xiong T., Liu R. et al. · Chemistry - A European Journal · 2019 · 6575-6583

3 measurement groups · 17 results

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

EPR spectroscopy

Electron paramagnetic resonance

Co3O4@CuCAT optimal core-shell electrode · Electrode

EPR spectra collected at 77 K to assess oxygen vacancies.

Temperature
77
Atmosphere
not specified
Geometry
EPR
Context
composite target versus Co3O4
Measurement source
p003 / journal p.6577 · Results · Figure 2e
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Oxygen-vacancy EPR signalabout g = 2.0; more intense for Co3O4@CuCAT than Co3O4——Text
Approximate		p003-p004 / journal pp.6577-6578 · Results · Figure 2e

Raman spectroscopy

Raman spectroscopy

Co3O4@CuCAT optimal core-shell electrode · Electrode

Raman spectra of Co3O4, CuCAT and Co3O4@CuCAT.

Atmosphere
ambient
Geometry
Raman spectrum
Context
composite target versus controls
Measurement source
p003 · Supporting Information · Figure S3
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Raman confirmation of CuCAT and Co3O4characteristic peaks of CuCAT and Co3O4 observed in Co3O4@CuCAT——Text
Qualitative		p002-p003 / journal pp.6576-6577 · Results · Figure S3

XPS deconvolution

X-ray photoelectron spectroscopy

Co3O4@CuCAT optimal core-shell electrode · Electrode

Cu 2p, Co 2p, C 1s, O 1s and N 1s XPS spectra; Table S1 gives Cu+/Cu2+ and Co2+/Co3+ areas.

Atmosphere
ambient
Geometry
XPS
Context
composite target versus pristine CuCAT and Co3O4
Measurement source
p006 · Supporting Information · Figure S8; Table S1
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
C 1s C-C binding energy284.7 eV (C1, C-C)——Text
Exact Reported		p003 / journal p.6577 · Results · Figure 2d
C 1s C-N binding energy286.1 eV (C2, C-N)——Text
Exact Reported		p003 / journal p.6577 · Results · Figure 2d
C 1s C-N=C binding energy288.1 eV (C3, C-N=C)——Text
Exact Reported		p003 / journal p.6577 · Results · Figure 2d
C 1s O=C-O binding energy292.2 eV (C4, O=C-O)——Text
Exact Reported		p003 / journal p.6577 · Results · Figure 2d
Co3O4 Co2+ area fraction1.104 area; 39.89%——SI Table
Exact Reported		p006 · Supporting Information · Table S1
Co3O4 Co3+ area fraction1.663 area; 60.10%——SI Table
Exact Reported		p006 · Supporting Information · Table S1
Co3O4@CuCAT Co2+ area fraction1.105 area; 41.68%——SI Table
Exact Reported		p006 · Supporting Information · Table S1
Co3O4@CuCAT Co3+ area fraction1.546 area; 58.32%——SI Table
Exact Reported		p006 · Supporting Information · Table S1
Co3O4@CuCAT Cu2+ area fraction2.013 area; 83.39%——SI Table
Exact Reported		p006 · Supporting Information · Table S1
Co3O4@CuCAT Cu+ area fraction0.401 area; 16.61%——SI Table
Exact Reported		p006 · Supporting Information · Table S1
CuCAT Cu2+ area fraction1.914 area; 76.07%——SI Table
Exact Reported		p006 · Supporting Information · Table S1
CuCAT Cu+ area fraction0.602 area; 23.93%——SI Table
Exact Reported		p006 · Supporting Information · Table S1
N 1s pyridinic N binding energy399.8 eV——Text
Exact Reported		p004 / journal p.6578 · Results · Figure 2f
N 1s pyrrolic N binding energy401.7 eV——Text
Exact Reported		p004 / journal p.6578 · Results · Figure 2f
N 1s quaternary N binding energy403.8 eV——Text
Exact Reported		p004 / journal p.6578 · Results · Figure 2f