Noh H., Yang Y., Zhang X. et al. · ChemElectroChem · 2020 · 509-516
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.
The crystalline MOF framework is retained through postsynthetic modification, electrode fabrication and bulk electrolysis.
Caveat: PXRD and porosity establish retained crystallinity/porosity at the measured level, not necessarily absence of all local defects.
513 · Redox Mediator-Assisted Electrocatalysis · Figure S6 · Linked to 2 structured results
MoSx-SIM-NDC-SALI contains monometallic node-grafted Mo(SH)2 units allocated exclusively to the mesopore after NDC blocks the c-pore.
Caveat: SC-XRD model includes partial occupancies and low loading; full CIF is not locally available in this extraction batch.
511 · Results and Discussion · Figure 3 · Linked to 4 structured results
NDC remains at approximately one ligand per Zr6 node after MoOx deposition and sulfidation, maintaining c-pore blocking during catalyst installation.
Caveat: Based on digested-sample 1H NMR integration rather than direct local imaging of every pore.
511 · Results and Discussion · Figure S2/Table S2 · Linked to 3 structured results
Mo(SH)2 units in the c-pore are inferred to be roughly four times more active than otherwise identical units sited in the mesopore.
Caveat: The four-fold factor is an inference from factor-of-two differences and the fraction of c-pore sites, not a direct isolated-site measurement.
515 · Pore Environment Effects · Linked to 6 structured results
MoSx-SIM-NDC-SALI and NDC-free MoSx-SIM behave mechanistically similarly under sufficiently reducing mediator-assisted conditions; RM-assisted electron transfer and proton-dependent steps jointly control the overall rate.
Caveat: Mechanistic assignment is based on electrochemical trends and comparison with prior work; authors note computational modelling would be useful for hydrogen-bonding hypotheses.
515 · Conclusions · Linked to 4 structured results
Redox mediators are required because the MOF support is electrically insulating at potentials relevant for hydrogen evolution and cannot directly address most catalyst sites.
Caveat: The paper does not report a standalone conductivity measurement; this is an electrochemical/inference statement supported by mediator-enabled activity.
510 · Introduction · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| fluorine-doped tin oxide (FTO) | FTO conductive glass | unknown · UnknownConductive substrate/control, not a MOF. | 513 · Redox Mediator-Assisted Electrocatalysis · Figure 4 |
| MoOx-SIM-NDC-SALI | Mo(VI) oxide species on NDC-SALI/NU-1000Zr6 oxozirconium node bearing Mo(VI) oxide species · TBAPy plus NDC | 3D · PristineOxide precursor/control generated by Mo(VI) oxide deposition on NDC-SALI; XANES pre-edge suggests tetrahedral local symmetry. | 511 · Results and Discussion · Figure S3 |
| MoSx-SIM-NDC-SALI | C50H22Mo0.16O16S0.32Zr3 (SC-XRD model)Zr6 oxozirconium node grafted with monometallic Mo(SH)2 units · TBAPy plus NDC site-directing ligand | 3D · PristinePorous MOF-supported array of single-site, single-metal-atom Mo(SH)2 catalysts allocated exclusively to the hexagonal mesopore. | 512 · Results and Discussion · Figure 3 |
| MoSx-SIM | NU-1000 bearing Mo(SH)2 units without NDCZr6 oxozirconium node grafted with monometallic Mo(SH)2 units · TBAPy | 3D · PristineNDC-free comparator in which Mo(SH)2 units occupy both hexagonal mesopores and c-pores. | 510 · Introduction · Figure 1 |
| NDC-SALI | NU-1000 with ca. one naphthalene dicarboxylate per Zr6 nodeZr6 oxozirconium node modified by NDC · TBAPy plus naphthalene dicarboxylate site-directing ligand | 3D · PristineNDC incorporated by SALI occupies the c-pore and converts NU-1000 from eight-connected to ten-connected Zr-MOF. | 511 · Introduction |
| NU-1000 | Zr6 oxozirconium node with TBAPy linkerhexanuclear oxozirconium-based Zr6 node · 1,3,5,8-(p-benzoate)pyrene linker (TBAPy4-) | 3D · PristineHierarchical microporous and mesoporous Zr-MOF support with labile hydroxo/aqua groups on nodes. | 510 · Introduction · Figure 1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| bare FTO substrateresearch_0714__mat__mat_fto | Thin Film · Pristine Control · Unknown | bare conductive substrate controlFTO conductive glass | 513 · Redox Mediator-Assisted Electrocatalysis · Figure 4 |
| MoOx-SIM-NDC-SALI/FTO electroderesearch_0714__mat__mat_moox_ndc_sali | Electrode · Pristine Control · Composite | drop-cast oxide-control working electrodeFTO conductive glass · 3 uL of 10 mg mL-1 MOF suspension drop-cast over 0.25 cm2 electroactive area | 513 · Redox Mediator-Assisted Electrocatalysis · Figure 4 |
| MoOx-SIM-NDC-SALI powderresearch_0714__mat__mat_moox_ndc_sali | Powder · Pristine Control · Guest Loaded | Mo(VI) oxide deposited on NDC-SALI prior to sulfidation | 511 · Results and Discussion · Figure 2 |
| MoSx-SIM-NDC-SALI/FTO electroderesearch_0714__mat__mat_mosx_ndc_sali | Electrode · Target Sample · Composite | drop-cast film on FTO used as working electrode; sulfide electrode prepared in argon gloveboxFTO conductive glass · 3 uL of 10 mg mL-1 MOF suspension drop-cast over 0.25 cm2 electroactive area | 515 · Experimental Section |
| MoSx-SIM-NDC-SALI powder/single crystalsresearch_0714__mat__mat_mosx_ndc_sali | Single Crystal · Target Sample · Guest Loaded | NDC-SALI framework after Mo(VI) deposition, reduction and H2S sulfidation | 512 · Results and Discussion · Figure 3 |
| MoSx-SIM without NDC/FTO electroderesearch_0714__mat__mat_mosx_sim | Electrode · Pristine Control · Composite | drop-cast comparator electrodeFTO conductive glass · same electrode fabrication as NDC-SALI derivative | 514 · Foot-of-the-wave Analysis · Table 1 |
| MoSx-SIM without NDC powderresearch_0714__mat__mat_mosx_sim | Powder · Pristine Control · Guest Loaded | NDC-free MoSx-SIM comparator prepared as reported previously and measured here with identical electrode fabrication | 514 · Foot-of-the-wave Analysis · Table 1 |
| NDC-SALI/FTO electroderesearch_0714__mat__mat_ndc_sali | Electrode · Pristine Control · Composite | drop-cast framework-control working electrodeFTO conductive glass · 3 uL of 10 mg mL-1 MOF suspension drop-cast over 0.25 cm2 electroactive area | 513 · Redox Mediator-Assisted Electrocatalysis · Figure 4 |
| NDC-SALI powderresearch_0714__mat__mat_ndc_sali | Powder · Pristine Control · Guest Loaded | NDC incorporated by SALI before Mo deposition | 511 · Introduction |
| NU-1000/FTO electroderesearch_0714__mat__mat_nu1000 | Electrode · Pristine Control · Composite | drop-cast parent-framework working electrodeFTO conductive glass · 3 uL of 10 mg mL-1 MOF suspension drop-cast over 0.25 cm2 electroactive area | 513 · Redox Mediator-Assisted Electrocatalysis · Figure 4 |
| NU-1000 powderresearch_0714__mat__mat_nu1000 | Powder · Pristine Control · Pristine Framework | as-synthesised MOF powder used for sorption/control measurements | S5 · Characterization · Table S1 |