Spectroscopy — The Different Roles of Cobalt and Manganese in Metal-Organic Frameworks for Supercapacitors

4 measurement groups · 14 results

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

UV-VIS-NIR absorption/Tauc plot plus CV against ferrocene reference

UV-visible and optical absorption spectroscopy Voltammetry

Co-MOF exfoliated nanosheets · Nanosheet

Exfoliated Co-MOF suspended in water for UV-VIS-NIR; CV on glassy carbon under ambient pressure and N2 atmosphere using Ag/Ag+ reference and ferrocene calibration.

Atmosphere: N2 for CV
Geometry: aqueous suspension and glassy-carbon working electrode
Context: pristine exfoliated MOF
Measurement source: SI p012-p014 · Section 14. Measurement of Bandgaps of Co-MOF and Mn-MOF · Figures S13-S14

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Lowest energy absorption onset	405 nm	—	—	Text Exact Reported	p007 · Results and Discussion · Figure S13
Optical band gapMarked as a best value within this paper	1.59 eV	—	—	Text Exact Reported	p007 · Results and Discussion · Figures S13-S14
Reduction onset used for energy-level calculation	Ered = -0.903 V	—	—	Text Exact Reported	SI p013 · Section 14. Measurement of Bandgaps · Figure S13c
HOMO level	-5.097 eV	—	—	Calculated From Reported Exact Reported	SI p013 · Section 14. Measurement of Bandgaps · Figure S14
LUMO level	-3.507 eV	—	—	Calculated From Reported Exact Reported	SI p013 · Section 14. Measurement of Bandgaps · Figure S14

UV-VIS-NIR absorption/Tauc plot plus CV against ferrocene reference

UV-visible and optical absorption spectroscopy Voltammetry

Mn-MOF exfoliated nanosheets · Nanosheet

Exfoliated Mn-MOF suspended in water for UV-VIS-NIR; CV on glassy carbon under ambient pressure and N2 atmosphere using Ag/Ag+ reference and ferrocene calibration.

Atmosphere: N2 for CV
Geometry: aqueous suspension and glassy-carbon working electrode
Context: pristine exfoliated MOF
Measurement source: SI p012-p014 · Section 14. Measurement of Bandgaps of Co-MOF and Mn-MOF · Figures S13-S14

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Lowest energy absorption onset	431 nm	—	—	Text Exact Reported	p007 · Results and Discussion · Figure S13
Optical band gap	1.87 eV	—	—	Text Exact Reported	p007 · Results and Discussion · Figures S13-S14
Reduction onset used for energy-level calculation	Ered = -0.856 V	—	—	Text Exact Reported	SI p012-p013 · Section 14. Measurement of Bandgaps · Figure S13c
HOMO level	-5.424 eV	—	—	Calculated From Reported Exact Reported	SI p013 · Section 14. Measurement of Bandgaps · Figure S14
LUMO level	-3.554 eV	—	—	Calculated From Reported Exact Reported	SI p013 · Section 14. Measurement of Bandgaps · Figure S14

X-ray photoelectron spectroscopy

Co3(HITP)2 bulk powder · Powder

XPS on ESCALAB250 at base pressure 1x10-9 mbar with Al K alpha source.

Atmosphere: high vacuum
Geometry: powder
Context: pristine bulk precursor
Measurement source: p003 · Results and Discussion · Figure S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co 2p1/2 binding energy	796.1 eV	—	—	Text Exact Reported	p003 · Results and Discussion · Figure S3
Co 2p3/2 binding energy	781.3 eV	—	—	Text Exact Reported	p003 · Results and Discussion · Figure S3

X-ray photoelectron spectroscopy

Mn3(HITP)2 bulk powder · Powder

XPS on ESCALAB250 at base pressure 1x10-9 mbar with Al K alpha source.

Atmosphere: high vacuum
Geometry: powder
Context: pristine bulk precursor
Measurement source: p003 · Results and Discussion · Figure S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Mn 2p1/2 binding energy	654.9 eV	—	—	Text Exact Reported	p003 · Results and Discussion · Figure S3
Mn 2p3/2 binding energy	643.2 eV	—	—	Text Exact Reported	p003 · Results and Discussion · Figure S3