Shen C.-H., Chen Y.-H., Wang Y.-C. et al. · Physical Chemistry Chemical Physics · 2022 · 9855-9865
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 authors propose conducting Mn-MOF-808-carbon nanocomposites to overcome interparticle charge-transport barriers for charge-storage and electrocatalytic applications.
Caveat: This is proposed future work rather than a demonstrated composite in this paper.
9864 · Conclusions · Linked to 2 structured results
The self-limiting SIM process installs spatially dispersed manganese sites in all three Zr-MOFs while preserving crystallinity, morphology and most of the porosity.
Caveat: Mn speciation is inferred from spectroscopy/electrochemistry and prior SIM literature rather than a single-crystal structure in this paper.
9859 · Results and discussion - Materials characterization · Figures 2-4; Figures S3-S5 · Linked to 5 structured results
Mn-MOF-808 is the best of the three tested platforms for redox-active Mn sites, giving the highest active Mn fraction and highest apparent diffusivity, attributed to its larger pore size and network-like pore structure.
Caveat: The authors note that only about 10% of Mn sites are electrochemically active in the entire Mn-MOF-808 film at 1.0 M Na2SO4, so current thick-film performance is not sufficient for pseudocapacitors without improved interparticle transport.
9863 · Results and discussion - Chronoamperometric studies · Figure 8 · Linked to 5 structured results
All dry Mn-decorated Zr-MOF pellets are intrinsically electrically insulating, with bulk conductivities below 1e-11 S cm-1.
Caveat: Conductivities are from noisy sub-nA two-probe CV fits, explicitly noted in the SI.
9860 · Results and discussion - Materials characterization · Figure S10; Table S1 · Linked to 3 structured results
Increasing Na2SO4 concentration shifts the redox-hopping limitation from sluggish ionic transport at low concentration to electronic transport at concentrations above about 0.5 M.
Caveat: Dapp values depend on whether the active-site concentration is taken from crystal structures or film-thickness-normalised loadings, although both approaches show the same trend.
9863 · Results and discussion - Chronoamperometric studies · Figure 8; Table S4 · Linked to 6 structured results
Charge transport in the Mn-decorated Zr-MOF thin films occurs by redox hopping only when applied potential drives Mn(III)/Mn(IV) chemistry and counter-ions neutralise charge.
Caveat: The electrochemical process accesses only a fraction of total Mn sites in micrometre-thick films.
9864 · Conclusions · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| CAU-24 | Zr6(mu3-O)4(mu3-OH)4(TCPB)2(HCOO)0.38(OH)3.62(OH2)3.62 after activationHexa-zirconium nodes; coordinated benzoate removed by HCl/DMF activation, leaving accessible -OH/-OH2 and minor formate. · 1,2,4,5-tetrakis(4-carboxyphenyl)benzene / TCPB linker from H4TCPB. | 3D · PristineCAU-24 Zr-MOF with leaf-like microcrystals and pore-size distribution centred at 1.2 nm. | S-1 · Supporting Information · Figure S1 discussion |
| Mn-CAU-24 | Mn-decorated CAU-24; 1.12 Mn per Zr6 node reportedCAU-24 hexa-zirconium nodes decorated with spatially dispersed manganese sites. · TCPB linker inherited from CAU-24. | 3D · PristineMn-decorated CAU-24 retaining crystallinity, leaf-like morphology and main pore structure after SIM treatment. | 9859 · Results and discussion - Materials characterization · Figure 3; Figure 4 |
| Mn-MOF-808 | Mn-decorated MOF-808; 1.66 Mn per Zr6 node reportedHexa-zirconium nodes decorated with spatially dispersed manganese sites. · BTC linker inherited from MOF-808. | 3D · PristineMn-decorated MOF-808 preserving crystallinity and main porosity after SIM Mn installation. | 9859 · Results and discussion - Materials characterization · Figure 3; Figure 4 |
| Mn-UiO-66 | Mn-decorated defective UiO-66; 0.91 Mn per Zr6 node reportedDefective UiO-66 hexa-zirconium nodes decorated with spatially dispersed manganese sites. · BDC linker inherited from UiO-66. | 3D · PristineMn-decorated defective UiO-66 retaining crystallinity, morphology and microporosity after SIM treatment. | 9859 · Results and discussion - Materials characterization · Figure 3; Figure 4 |
| MOF-808 | Not specifiedHexa-zirconium nodes with terminal -OH/-OH2 groups and coordinated formate reported from prior same-procedure work. · Trimesic acid / BTC linker from H3BTC. | 3D · PristineZr-MOF with network-like pore structure and main pore size around 1.7 nm. | 9858 · Results and discussion - Materials characterization · Figure 2 |
| Defective UiO-66 | Not specifiedHexa-zirconium nodes with terminal -OH/-OH2 groups in the defective UiO-66 used here. · Terephthalic acid / BDC linker from H2BDC. | 3D · PristineDefective UiO-66 Zr-MOF with crystal sizes around 80-250 nm and pore sizes around 1.0-1.2 nm plus defect pore around 1.6 nm. | 9859 · Results and discussion - Materials characterization · Figure 3 |
| Topologically distinct Zr-MOF series: MOF-808, defective UiO-66, CAU-24 and Mn-decorated analogues | Not specifiedHexa-zirconium Zr6 nodes; Mn sites post-synthetically installed on node sites for Mn-decorated analogues. · BTC in MOF-808, BDC in defective UiO-66, TCPB in CAU-24. | 3D · UnknownComparison set of three topologically distinct Zr-MOFs with different pore sizes, before and after Mn decoration. | 9856 · Introduction · Figure 1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| CAU-24 thin film on FTOresearch_0701__mat__mat_cau24 | Thin Film · Pristine Control · Pristine Framework | 6 mg MOF in 0.5 mL acetone; 6 uL suspension drop-cast five times on FTO.FTO conducting substrate, exposed area 0.25 cm2 | 9857 · Experimental - Fabrication of pellets and thin films |
| CAU-24 powderresearch_0701__mat__mat_cau24 | Powder · Pristine Control · Pristine Framework | Benzoic-acid-modulated CAU-24 after HCl/DMF heating to remove benzoate, DMF washing, acetone exchange and activation. | 9857 · Experimental - Synthesis of Zr-MOFs |
| Mn-CAU-24 thin film on FTOresearch_0701__mat__mat_mn_cau24 | Thin Film · Target Sample · Doped | 6 mg Mn-CAU-24 in 0.5 mL acetone; 6 uL suspension drop-cast five times on FTO.FTO conducting substrate, exposed area 0.25 cm2 · 25 um average film thickness | 9863 · Results and discussion - Chronoamperometric studies · Figure S15 |
| Mn-CAU-24 dry pelletresearch_0701__mat__mat_mn_cau24 | Pellet · Target Sample · Doped | Powder wetted with acetone, pelletised in 7 mm die at 0.5 ton, dried under vacuum at 80 C overnight.sandwiched between two titanium foils during measurement · 0.021 cm | S-12 · Bulk electrical conductivity · Table S1 |
| Mn-CAU-24 powderresearch_0701__mat__mat_mn_cau24 | Powder · Target Sample · Doped | CAU-24 powder after Mn acetate SIM treatment, DMF washing, acetone exchange and 80 C activation. | 9857 · Experimental - Installation of manganese sites in Zr-MOFs |
| Mn-MOF-808 thin film on FTOresearch_0701__mat__mat_mn_mof808 | Thin Film · Target Sample · Doped | 6 mg Mn-MOF-808 in 0.5 mL acetone; 6 uL suspension drop-cast five times on FTO.FTO conducting substrate, exposed area 0.25 cm2 · 48 um average film thickness | 9863 · Results and discussion - Chronoamperometric studies · Figure S15 |
| Mn-MOF-808 dry pelletresearch_0701__mat__mat_mn_mof808 | Pellet · Target Sample · Doped | Powder wetted with acetone, pelletised in 7 mm die at 0.5 ton, dried under vacuum at 80 C overnight.sandwiched between two titanium foils during measurement · 0.018 cm | S-12 · Bulk electrical conductivity · Table S1 |
| Mn-MOF-808 powderresearch_0701__mat__mat_mn_mof808 | Powder · Target Sample · Doped | MOF-808 powder after Mn acetate SIM treatment, DMF washing, acetone exchange and 80 C activation. | 9857 · Experimental - Installation of manganese sites in Zr-MOFs |
| Mn-UiO-66 thin film on FTOresearch_0701__mat__mat_mn_uio66 | Thin Film · Target Sample · Doped | 6 mg Mn-UiO-66 in 0.5 mL acetone; 6 uL suspension drop-cast five times on FTO.FTO conducting substrate, exposed area 0.25 cm2 · 33 um average film thickness | 9863 · Results and discussion - Chronoamperometric studies · Figure S15 |
| Mn-UiO-66 dry pelletresearch_0701__mat__mat_mn_uio66 | Pellet · Target Sample · Doped | Powder wetted with acetone, pelletised in 7 mm die at 0.5 ton, dried under vacuum at 80 C overnight.sandwiched between two titanium foils during measurement · 0.026 cm | S-12 · Bulk electrical conductivity · Table S1 |
| Mn-UiO-66 powderresearch_0701__mat__mat_mn_uio66 | Powder · Target Sample · Doped | Defective UiO-66 powder after Mn acetate SIM treatment, DMF washing, acetone exchange and 80 C activation. | 9857 · Experimental - Installation of manganese sites in Zr-MOFs |
| MOF-808 thin film on FTOresearch_0701__mat__mat_mof808 | Thin Film · Pristine Control · Pristine Framework | 6 mg MOF in 0.5 mL acetone; 6 uL suspension drop-cast five times on FTO.FTO conducting substrate, exposed area 0.25 cm2 | 9857 · Experimental - Fabrication of pellets and thin films |
| MOF-808 powderresearch_0701__mat__mat_mof808 | Powder · Pristine Control · Pristine Framework | Solvothermal powder, HCl/DMF treated, acetone exchanged and vacuum activated. | 9857 · Experimental - Synthesis of Zr-MOFs |
| All powder materials: MOF-808, Mn-MOF-808, UiO-66, Mn-UiO-66, CAU-24 and Mn-CAU-24research_0701__mat__mat_zrmof_series | Powder · Paper Level Unspecified · Unknown | Powder comparison set used for PXRD, SEM, TEM, FTIR, Raman and porosity comparisons. | 9858 · Results and discussion - Materials characterization · Figure 2 |
| UiO-66 thin film on FTOresearch_0701__mat__mat_uio66 | Thin Film · Pristine Control · Pristine Framework | 6 mg MOF in 0.5 mL acetone; 6 uL suspension drop-cast five times on FTO.FTO conducting substrate, exposed area 0.25 cm2 | 9857 · Experimental - Fabrication of pellets and thin films |
| Defective UiO-66 powderresearch_0701__mat__mat_uio66 | Powder · Pristine Control · Pristine Framework | Room-temperature growth after Zr propoxide/acetic acid pre-treatment; DMF washing, acetone exchange and activation as for MOF-808. | 9857 · Experimental - Synthesis of Zr-MOFs |