Electrochemistry Application — Bromo- and iodo-bridged building units in metal-organic frameworks for enhanced carrier transport and CO2 photoreduction by water vapor

6 measurement groups · 13 results

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

Water oxidation product quantification by colorimetry and DPD/POD methods

As-synthesised TMOF-10-NH2(I) · Single Crystal

H2O volume increased to 30 mL; liquid sampled every 4 h and quantified by Fe2+/Fe3+ colorimetry at 330 nm and DPD/POD method.

Temperature: 283
Atmosphere: CO2 and H2O vapour/liquid water
Geometry: sealed photocatalytic reaction cell
Context: pristine iodide framework
Measurement source: 11 · Photocatalytic CO2 reduction · Fig. 5e and Supplementary Figs. 43-44

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
H2O2 amount after 12 h	438.03 umol g-1	—	—	Table Exact Reported	Source data · Figure 5e
H2O2 evolution rate	36.3 umol h-1 g-1	—	—	Text Exact Reported	6 · Overall photocatalytic CO2 reduction and H2O oxidation · Fig. 5e

Mott-Schottky flat-band analysis

Mott-Schottky analysis

As-synthesised TMOF-10-NH2(Br) · Single Crystal

Photoelectrochemical/electrochemical analysis; potentials reported vs Ag/AgCl and converted to NHE at pH 7.

Geometry: photocatalyst-coated ITO electrode
Context: pristine framework
Measurement source: 4 · Band structure of TMOF-10-NH2 · Supplementary Fig. 23

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
flat-band potential vs Ag/AgCl	-1.37 V vs Ag/AgCl	-1.17 V vs NHE, pH 7	—	Text Exact Reported	4 · Band structure of TMOF-10-NH2 · Supplementary Fig. 23

Mott-Schottky flat-band analysis

Mott-Schottky analysis

As-synthesised TMOF-10-NH2(I) · Single Crystal

Photoelectrochemical/electrochemical analysis; potentials reported vs Ag/AgCl and converted to NHE at pH 7.

Geometry: photocatalyst-coated ITO electrode
Context: pristine framework
Measurement source: 4 · Band structure of TMOF-10-NH2 · Supplementary Fig. 23

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
flat-band potential vs Ag/AgCl	-1.11 V vs Ag/AgCl	-0.91 V vs NHE, pH 7	—	Text Exact Reported	4 · Band structure of TMOF-10-NH2 · Supplementary Fig. 23

Gas-phase photocatalytic CO2 reduction with H2O vapour

As-synthesised TMOF-10-NH2(I) · Single Crystal

10 mg photocatalyst on quartz filter membrane; 5 mL degassed water; high-purity CO2 at 1 atm bubbled through water; 300 W Xe lamp AM1.5G simulated sunlight; reaction cell at 10 °C; gases analysed by online GC.

Temperature: 283
Atmosphere: CO2 and H2O vapour
Geometry: quartz filter membrane in sealed reaction cell, no direct water contact
Context: pristine TMOF-10-NH2(I) and TMOF-10-NH2(Br) comparison
Measurement source: 11 · Photocatalytic CO2 reduction · Fig. 5a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CO evolution rate for halide-free Pb-MOF control	5.2 umol h-1 g-1	—	—	Text Exact Reported	7 · Overall photocatalytic CO2 reduction and H2O oxidation · Fig. 5f
CO evolution rate	52 umol h-1 g-1	—	—	Text Exact Reported	6 · Overall photocatalytic CO2 reduction and H2O oxidation · Fig. 5a
CO evolution rateMarked as a best value within this paper	78 umol h-1 g-1	—	—	Text Exact Reported	6 · Overall photocatalytic CO2 reduction and H2O oxidation · Fig. 5a

Gas-phase photocatalytic CO2 reduction and wavelength-dependent AQY

Ru1.58@TMOF-10-NH2(I) · Powder

Ru-loaded TMOF-10-NH2(I) photocatalysis under 300 W Xe lamp; AQY under band-pass filters at 400, 425, 450, 475, 500 and 525 nm.

Temperature: 283
Atmosphere: CO2 and H2O vapour
Geometry: quartz filter membrane in sealed reaction cell
Context: Ru composite compared with pristine TMOF-10-NH2(I)
Measurement source: 9 · Deposition of Ru cocatalysts onto TMOF-10-NH2(I) · Fig. 7d-e

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
optimised Ru loadingMarked as a best value within this paper	1.58 wt.% by ICP-OES	—	—	Text Exact Reported	9 · Deposition of Ru cocatalysts onto TMOF-10-NH2(I) · Fig. 7d
apparent quantum yield at 400 nmMarked as a best value within this paper	1.359% at 400 nm	—	—	Table Exact Reported	Source data · Figure 7e
apparent quantum yield at 525 nm	0.106% at 525 nm	—	—	Table Exact Reported	Source data · Figure 7e
CO evolution rate for Ru1.58@TMOF-10-NH2(I)Marked as a best value within this paper	154.36 umol g-1 h-1	—	error bar 7.25 umol g-1 h-1	Table Exact Reported	Source data · Figure 7d

Transient photocurrent and electrochemical impedance spectroscopy

Photoresponse and photoelectrochemistry Impedance spectroscopy

Ru1.58@TMOF-10-NH2(I) · Powder

CHI 760E three-electrode system; photocatalyst-coated ITO working electrode, Pt counter, Ag/Ag+ reference; 0.1 M TBAPF6 in dichloromethane; 300 W Xe lamp; EIS from 0.1 Hz to 1 MHz.

Temperature: room temperature
Geometry: 1.0 cm x 1.0 cm ITO electrode with drop-cast sample/Nafion suspension
Context: Ru composite compared with pristine TMOF-10-NH2(I)
Measurement source: 11 · Electrochemical measurements · Supplementary Figs. 59-60

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
EIS Nyquist plot diameter	smaller Nyquist plot diameter after Ru loading	—	—	Text Qualitative	9 · Deposition of Ru cocatalysts onto TMOF-10-NH2(I) · Supplementary Fig. 60
transient photocurrent enhancement after Ru loadingMarked as a best value within this paper	1.6 times enhancement over pristine TMOF-10-NH2(I)	—	—	Text Rounded Reported	9 · Deposition of Ru cocatalysts onto TMOF-10-NH2(I) · Supplementary Fig. 59