Spectroscopy — Effective visible-light CO2 photoreduction over (metallo)porphyrin-based metal–organic frameworks to achieve useful hydrocarbons

3 measurement groups · 5 results

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

Fourier transform infrared spectroscopy (FT-IR)

Infrared spectroscopy

PCN-222(Fe) · Powder

FT-IR spectra for PCN-222(Fe, Co, Ni and Cu) recorded on Bruker Tensor 27 using KBr pellets over 4000-400 cm-1; spectra in SI Figure S1.

Context: pristine metalloporphyrinic MOF series
Measurement source: 3 · Characterization of catalyst · Figure S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
FT-IR COO stretching bands for PCN-222(Fe, Co, Ni, Cu)	asymmetric COO: 1701, 1702, 1707, 1702 cm-1; symmetric COO: 1402, 1407, 1415, 1410 cm-1	—	—	Text Exact Reported	3 · Characterization of catalyst · Figure S1
FT-IR M-N bands for PCN-222(Fe, Co, Ni, Cu)	M-N peaks: 999, 1011, 995, 1009 cm-1	—	—	Text Exact Reported	3 · Characterization of catalyst · Figure S1

Photoluminescence spectroscopy

Photoluminescence and fluorescence spectroscopy

PCN-222(Fe) · Powder

PL spectra recorded by Cary Eclipse fluorescence spectrophotometer; main Figure 5 uses 410 nm excitation for PCN-222(Fe), PCN-222(Co), PCN-222(Cu), PCN-222(Ni), and PCN-222(no metal).

Context: metalloporphyrinic MOF versus nonmetal PCN-222 control
Measurement source: 4 · Characterization of catalyst · Figure 5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
PL emission intensity trend	PCN-222(M) emission band intensity is lower than nonmetal PCN-222	—	—	Text Qualitative	3-4 · Characterization of catalyst · Figure 5

UV-vis absorption spectroscopy

UV-visible and optical absorption spectroscopy

PCN-222(Fe) · Powder

UV-vis spectra of PCN-222(M) and metalloporphyrin precursors; spectra are in missing SI Figures S2-S3.

Context: pristine metalloporphyrinic MOF series
Measurement source: 3 · Characterization of catalyst · Figure S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
PCN-222(M) visible-light absorption lower wavelength	400 nm lower edge of reported strong absorption range	—	—	Text Range	3 · Characterization of catalyst · Figure S3
PCN-222(M) visible-light absorption upper wavelength	700 nm upper edge of reported strong absorption range	—	—	Text Range	3 · Characterization of catalyst · Figure S3