Spectroscopy — Efficient oxygen evolution using conductive cobalt-based metal-organic framework

3 measurement groups · 16 results

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

FTIR spectroscopy

Infrared spectroscopy

as-synthesised Co-BTB MOF powder · Powder

Nicolet 6700 Thermo Scientific FTIR, 400-4000 cm-1, KBr.

Geometry: KBr
Context: pristine framework powder
Measurement source: SI text · Materials and General Methods

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
FTIR benzene-ring peak	1430 cm-1	—	—	Text Exact Reported	3 · Result and discussion · Figure 3a
FTIR coordinated carboxylate peak	1621 cm-1	—	—	Text Exact Reported	3 · Result and discussion · Figure 3a
FTIR labelled peak from figure	1103 cm-1	—	—	Figure Axis Approximate	3 · Figure · Figure 3a
FTIR labelled peak from figure	1335 cm-1	—	—	Figure Axis Approximate	3 · Figure · Figure 3a
FTIR labelled peak from figure	1377 cm-1	—	—	Figure Axis Approximate	3 · Figure · Figure 3a
FTIR labelled peak from figure	716 cm-1	—	—	Figure Axis Approximate	3 · Figure · Figure 3a
FTIR labelled peak from figure	770 cm-1	—	—	Figure Axis Approximate	3 · Figure · Figure 3a

X-ray photoelectron spectroscopy (XPS)

X-ray photoelectron spectroscopy

cobalt oxide control powder · Powder

Co3O4 control XPS survey and high-resolution Co 2p and O 1s spectra shown in Figure S1b-d; ESCALAB 250Xi XPS Microprobe with Al-Kalpha source reported in SI methods.

Context: non-MOF cobalt oxide control powder
Measurement source: 5 · Figure S1 · Figure S1b-d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co3O4 Co 2p1/2 binding energy	approximately 796 eV	—	visual estimate from figure axis	Visual Estimate Approximate	5 · Figure S1 · Figure S1c
Co3O4 Co 2p3/2 binding energy	approximately 780 eV	—	visual estimate from figure axis	Visual Estimate Approximate	5 · Figure S1 · Figure S1c
Co3O4 O 1s A binding energy	approximately 530.5 eV	—	visual estimate from figure axis	Visual Estimate Approximate	5 · Figure S1 · Figure S1d
Co3O4 O 1s B binding energy	approximately 532 eV	—	visual estimate from figure axis	Visual Estimate Approximate	5 · Figure S1 · Figure S1d
Co3O4 XPS survey detected elements	O 1s and Co 2p labelled in survey spectrum	—	—	Figure Axis Qualitative	5 · Figure S1 · Figure S1b

X-ray photoelectron spectroscopy (XPS)

X-ray photoelectron spectroscopy

as-synthesised Co-BTB MOF powder · Powder

ESCALAB 250Xi XPS Microprobe with Al-Kalpha micro-focusing X-ray monochromator.

Context: pristine framework powder
Measurement source: SI text · Materials and General Methods

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co 2p1/2 binding energy	approximately 796 eV	—	visual estimate from figure axis	Visual Estimate Approximate	3 · Figure · Figure 4b
Co 2p3/2 binding energy	approximately 780 eV	—	visual estimate from figure axis	Visual Estimate Approximate	3 · Figure · Figure 4b
Co 2p shift versus cobalt oxide	Co 2p3/2 and Co 2p1/2 shifted to higher binding energy in Co-MOF	—	—	Text Qualitative	3 · Result and discussion · Figure 4b
XPS survey detected elements	C, O and Co detected	—	—	Text Qualitative	3 · Result and discussion · Figure 4a