Zhang Y., Kornienko N. · ChemSusChem · 2022 · e202101587
Open a family to keep every result attached to its sample, method and conditions.
Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.
Co-CAT provides a comparatively low HMFOR onset potential and measurable FDCA production at 1.12 V vs RHE.
Caveat: Low-potential activity was slow and tested for 5 days; faradaic efficiency was only 31.13%.
5 · Results and Discussion · Figure S6 and Table S1 · Linked to 3 structured results
The M-CAT frameworks are retained on electrode surfaces after electrolysis according to XPS and SEM, although small binding-energy shifts indicate coordination/environment changes.
Caveat: Evidence is qualitative; no post-electrolysis quantitative leaching analysis is reported.
5 · Results and Discussion · Figures S7-S8 · Linked to 2 structured results
Co-CAT and Ni-CAT are conductive 2D metal-catecholate MOFs with well-defined, coordinatively unsaturated M-O4 active sites suitable for mechanistic HMFOR studies.
Caveat: No direct four-probe conductivity value is reported in this paper; conductivity is asserted from the known M-CAT framework and electrochemical behaviour.
2 · Introduction · Figure 1 · Linked to 3 structured results
Ni-CAT shows faster HMFOR kinetics than Co-CAT at positive potentials, reflected in lower Tafel slope and rapid operando IR response after NiII/III formation.
Caveat: Ni-CAT has lower faradaic efficiency at 1.42 V due to competing oxygen evolution.
5 · Results and Discussion · Figures 3f and 4f · Linked to 3 structured results
HMFOR is initiated by formation of M(III) species followed by HMF adsorption, with Co-CAT likely limited by initial intermediate adsorption and Ni-CAT by final intermediate desorption.
Caveat: Mechanistic assignment is inferred from correlations between redox potentials, CV currents and operando IR band intensities.
2 · Introduction · Figure 4 · Linked to 5 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Co-CATBrowse family: Co₃(HHTP)₂ / Co–HHTP | Co metal-catecholate framework with Co-O4 active sitesCo2+/Co3+ centres coordinated by catecholate oxygens · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) | 2D · PristineConductive metal-catecholate framework consisting of 2D layers; XRD peaks at 9.2 and 13.9 degrees assigned to (200) and (3-11) planes and matching calculated Co-CAT pattern. | 2 · Introduction / Results and Discussion · Figures 1 and 2 |
| Ni-CATBrowse family: Ni₃(HHTP)₂ / Ni–HHTP | Ni metal-catecholate framework with Ni-O4 active sitesNi2+/Ni3+ centres coordinated by catecholate oxygens · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) | 2D · PristineConductive metal-catecholate framework consisting of 2D layers; XRD peaks at 9.2 and 13.9 degrees assigned to (200) and (3-11) planes and matching calculated pattern. | 2 · Introduction / Results and Discussion · Figures 1 and 2 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Co-CAT on flexible carbon clothresearch_0892__mat__co_cat | Electrode · Target Sample · Composite | Co-CAT grown on flexible carbon cloth and used as the working electrode for operando IR.flexible carbon cloth | 4 · 1.4 Operando spectroscopy |
| Co-CAT-Carbon Paperresearch_0892__mat__co_cat | Electrode · Target Sample · Composite | Co-CAT grown directly on carbon paper substrate, rinsed and CV cleaned.carbon paper | 4 · Results and Discussion · Figure 3c,e |
| Co-CAT-FTOresearch_0892__mat__co_cat | Electrode · Target Sample · Composite | Co-CAT grown directly on conductive FTO substrate, rinsed and CV cleaned.fluorine-doped tin oxide (FTO) | 2 · 1.2 Synthesis and characterization of M-CAT · Figure S1 |
| Co-CAT powder on glassy carbon diskresearch_0892__mat__co_cat | Electrode · Target Sample · Composite | Co-CAT powder deposited directly on a glassy carbon disk for rotating-disk LSV/Tafel measurement.glassy carbon rotating disk | 5 · Results and Discussion · Figure 3f |
| Co-CAT powderresearch_0892__mat__co_cat | Powder · Target Sample · Pristine Framework | Solvothermal powder; washed with dry acetone, centrifuged, vacuum dried. | 2 · 1.2 Synthesis and characterization of M-CAT |
| Ni-CAT on flexible carbon clothresearch_0892__mat__ni_cat | Electrode · Target Sample · Composite | Ni-CAT grown on flexible carbon cloth and used as the working electrode for operando IR.flexible carbon cloth | 4 · 1.4 Operando spectroscopy |
| Ni-CAT-Carbon Paperresearch_0892__mat__ni_cat | Electrode · Target Sample · Composite | Ni-CAT grown directly on carbon paper substrate, rinsed and CV cleaned.carbon paper | 4 · Results and Discussion · Figure 3d,e |
| Ni-CAT-FTOresearch_0892__mat__ni_cat | Electrode · Target Sample · Composite | Ni-CAT grown directly on conductive FTO substrate, rinsed and CV cleaned.fluorine-doped tin oxide (FTO) · about 220 nm | 3 · Results and Discussion · Figure 2c |
| Ni-CAT powder on glassy carbon diskresearch_0892__mat__ni_cat | Electrode · Target Sample · Composite | Ni-CAT powder deposited directly on a glassy carbon disk for rotating-disk LSV/Tafel measurement.glassy carbon rotating disk | 5 · Results and Discussion · Figure 3f |
| Ni-CAT powderresearch_0892__mat__ni_cat | Powder · Target Sample · Pristine Framework | Solvothermal powder; washed with dry acetone, centrifuged, vacuum dried. | 2 · 1.2 Synthesis and characterization of M-CAT |