Zhao H., Yu L., Zhang L. et al. · ACS Sustainable Chemistry and Engineering · 2021 · 10892-10901
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 acetate-ion modulation method was extended to Ni, Co, Cu, Zn and multiple bimetallic MOFs.
Caveat: The SI provides morphology/XRD/EDS evidence for the extended set, but full synthetic stoichiometries and electrochemical metrics were not reported for every material.
10895 · Results and Discussion · Figures S5-S9
During OER the NiFe-MOF NSs decompose/reconstruct into Ni-Fe oxide nanosheets decorated with NiOOH nanoparticles, with oxides/oxyhydroxides acting as the real active sites.
Caveat: The authors note that NiOOH is not proven to be the only product during OER.
10899 · Results and Discussion · Figure 5; Figure S30 · Linked to 4 structured results
Ultrathin morphology, exposed (001) facets, increased Cdl and reduced charge-transfer resistance improve OER kinetics for NiFe-MOF NSs relative to bulk NiFe-MOF and monometallic controls.
Caveat: Electrochemical electrodes include conductive carbon black and Nafion, so EIS/Rct reflects the catalyst-ink electrode interface rather than intrinsic MOF conductivity.
10897 · Results and Discussion · Figures 3-4 · Linked to 6 structured results
Acetate ions competitively coordinate with metal ions against terephthalate, slowing growth along the (001) facet and producing ultrathin NiFe-MOF nanosheets with high (001) exposure.
Caveat: Facet exposure is inferred from XRD intensity changes and structural analogy to nickel hydroxide terephthalate hydrate rather than direct single-crystal refinement.
10895 · Results and Discussion · Scheme 1; Figure 1 · Linked to 3 structured results
The carboxylate group, not sodium ions or minor pH differences, is the main factor controlling NiFe-MOF facet engineering and nanosheet morphology.
Caveat: Control evidence is morphology-based; exact pH and additive experiments do not fully isolate all ionic-strength effects.
10895 · Results and Discussion · Figures S3-S4; Table S1 · Linked to 3 structured results
Higher zeta potential for NiFe-MOF NSs is proposed to facilitate hydroxide adsorption and improve OER efficiency.
Caveat: Zeta potential is indirect evidence for hydroxide adsorption and is not itself a direct kinetic measurement.
10897 · Results and Discussion · Figure S23 · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Co-MOF | cobalt terephthalate/hydroxide MOFCo · terephthalate / BDC | 2D · PristineAcetate-modulated 2D monometallic MOF. | S8 · Supporting Information · Figure S7 |
| CoNi-MOF | cobalt nickel terephthalate/hydroxide MOFCo and Ni · terephthalate / BDC | 2D · PristineAcetate-modulated bimetallic MOF. | S8 · Supporting Information · Figure S7 |
| CoZn-MOF | cobalt zinc terephthalate/hydroxide MOFCo and Zn · terephthalate / BDC | 2D · PristineAcetate-modulated bimetallic MOF. | S8 · Supporting Information · Figure S7 |
| Cu-MOF | copper terephthalate/hydroxide MOFCu · terephthalate / BDC | 2D · PristineAcetate-modulated 2D monometallic MOF. | S9 · Supporting Information · Figure S8 |
| CuCo-MOF | copper cobalt terephthalate/hydroxide MOFCu and Co · terephthalate / BDC | 2D · PristineAcetate-modulated bimetallic MOF. | S9 · Supporting Information · Figure S8 |
| CuNi-MOF | copper nickel terephthalate/hydroxide MOFCu and Ni · terephthalate / BDC | 2D · PristineAcetate-modulated bimetallic MOF. | S9 · Supporting Information · Figure S8 |
| Fe-MOF | iron terephthalate/hydroxide MOFFe · terephthalate / BDC | 2D · PristineMonometallic Fe-MOF; SEM and XRD shown in SI. | S19 · Supporting Information · Figure S17 |
| Ni-MOF | nickel terephthalate/hydroxide MOFNi · terephthalate / BDC | 2D · PristineAcetate-modulated 2D monometallic MOF; XRD and EDS shown in SI. | S7 · Supporting Information · Figure S6 |
| NiCo-MOF | nickel cobalt terephthalate/hydroxide MOFNi and Co · terephthalate / BDC | 2D · PristineAcetate-modulated bimetallic MOF. | 10893 · Experimental Section |
| NiFe-MOF | Ni/Fe hydroxide terephthalate framework, Ni:Fe ca. 3:1Ni and Fe metal-O6 clusters; Fe partially substitutes Ni · terephthalate / 1,4-benzenedicarboxylate (BDC) | 2D · PristineAssigned to nickel hydroxide terephthalate hydrate, JCPDS No. 035-1677, with exposed (001) facets in nanosheet samples. | 10895 · Results and Discussion · Figure 1 |
| NiZn-MOF | nickel zinc terephthalate/hydroxide MOFNi and Zn · terephthalate / BDC | 2D · PristineAcetate-modulated bimetallic MOF. | S7 · Supporting Information · Figure S6 |
| commercial RuO2 | RuO2Ru | unknown · UnknownCommercial benchmark oxide catalyst. | 10896 · Results and Discussion · Figure 3 |
| Zn-MOF | zinc terephthalate/hydroxide MOFZn · terephthalate / BDC | 2D · PristineAcetate-modulated 2D monometallic MOF. | S10 · Supporting Information · Figure S9 |
| ZnCo-MOF | zinc cobalt terephthalate/hydroxide MOFZn and Co · terephthalate / BDC | 2D · PristineAcetate-modulated bimetallic MOF. | S10 · Supporting Information · Figure S9 |
| ZnNi-MOF | zinc nickel terephthalate/hydroxide MOFZn and Ni · terephthalate / BDC | 2D · PristineAcetate-modulated bimetallic MOF. | S10 · Supporting Information · Figure S9 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Co-MOFresearch_0512__mat__co_mof | Nanosheet · Pristine Control · Pristine Framework | acetate-ion modulation | S6 · Supporting Information · Figure S5 |
| CoNi-MOFresearch_0512__mat__coni_mof | Nanosheet · Pristine Control · Mixed Metal | acetate-ion modulation | S8 · Supporting Information · Figure S7 |
| CoZn-MOFresearch_0512__mat__cozn_mof | Nanosheet · Pristine Control · Mixed Metal | acetate-ion modulation | S8 · Supporting Information · Figure S7 |
| Cu-MOFresearch_0512__mat__cu_mof | Nanosheet · Pristine Control · Pristine Framework | acetate-ion modulation | S6 · Supporting Information · Figure S5 |
| CuCo-MOFresearch_0512__mat__cuco_mof | Nanosheet · Pristine Control · Mixed Metal | acetate-ion modulation | S9 · Supporting Information · Figure S8 |
| CuNi-MOFresearch_0512__mat__cuni_mof | Nanosheet · Pristine Control · Mixed Metal | acetate-ion modulation | S9 · Supporting Information · Figure S8 |
| Fe-MOFresearch_0512__mat__fe_mof | Powder · Pristine Control · Pristine Framework | acetate-ion modulation | 10896 · Results and Discussion · Figure S17 |
| Fe-MOF catalyst ink on glassy carbonresearch_0512__mat__fe_mof | Electrode · Composite Sample · Composite | catalyst/carbon/Nafion ink drop-castglassy carbon disk electrode | 10896 · Results and Discussion · Figure 3 |
| Ni-MOF NSsresearch_0512__mat__ni_mof | Nanosheet · Pristine Control · Pristine Framework | acetate-ion modulation | 10897 · Results and Discussion · Figure 4 |
| Ni-MOF NSs catalyst ink on glassy carbonresearch_0512__mat__ni_mof | Electrode · Composite Sample · Composite | catalyst/carbon/Nafion ink drop-castglassy carbon disk electrode | 10896 · Results and Discussion · Figure 3 |
| NiCo-MOFresearch_0512__mat__nico_mof | Nanosheet · Pristine Control · Mixed Metal | acetate-ion modulation | 10893 · Experimental Section |
| NiFe0.15-MOFresearch_0512__mat__nife_mof | Powder · Pristine Control · Mixed Metal | 0.06 mmol FeCl3 iron fraction control | 10893 · Experimental Section |
| NiFe0.5-MOFresearch_0512__mat__nife_mof | Powder · Pristine Control · Mixed Metal | 0.2 mmol FeCl3 iron fraction control | S20 · Supporting Information · Figure S18 |
| NiFe-MOF 1 Mresearch_0512__mat__nife_mof | Powder · Pristine Control · Mixed Metal | 2 mL 1 M NaOAc modulation | S17 · Supporting Information · Table S1 |
| NiFe-MOF 2 Mresearch_0512__mat__nife_mof | Powder · Pristine Control · Mixed Metal | 2 mL 2 M NaOAc modulation | S17 · Supporting Information · Table S1 |
| NiFe-MOF 4 Mresearch_0512__mat__nife_mof | Nanosheet · Pristine Control · Mixed Metal | 4 M NaOAc modulation; reported amorphous by XRDmicron-level lateral size | 10896 · Results and Discussion · Figure S15 |
| NiFe-MOF bulkresearch_0512__mat__nife_mof | Powder · Pristine Control · Mixed Metal | solvothermal product without acetate modulation; kept in ethanolmicro-level thickness | 10894 · Results and Discussion · Scheme 1; Figure 1a |
| NiFe-MOF bulk catalyst ink on glassy carbonresearch_0512__mat__nife_mof | Electrode · Composite Sample · Composite | 10 uL catalyst/carbon/Nafion ink drop-castglassy carbon disk electrode, 5 mm diameter | 10893 · Electrochemical Measurements |
| NiFe-MOF-KOAcresearch_0512__mat__nife_mof | Nanosheet · Pristine Control · Mixed Metal | KOAc reference additive | S18 · Supporting Information · Figure S16 |
| NiFe-MOF-NaClresearch_0512__mat__nife_mof | Powder · Pristine Control · Mixed Metal | NaCl reference additive | S17 · Supporting Information · Table S1; Figure S16 |
| NiFe-MOF NSsresearch_0512__mat__nife_mof | Nanosheet · Target Sample · Mixed Metal | 3 M NaOAc acetate-ion modulation; hierarchical microsphere of ultrathin nanosheetsaround 5.39 nm | 10895 · Results and Discussion · Figure 1; Figure S10 |
| NiFe-MOF NSs catalyst ink on glassy carbonresearch_0512__mat__nife_mof | Electrode · Composite Sample · Composite | 10 uL ink drop-cast and naturally driedglassy carbon disk electrode, 5 mm diameter | 10893 · Electrochemical Measurements |
| NiZn-MOFresearch_0512__mat__nizn_mof | Nanosheet · Pristine Control · Mixed Metal | acetate-ion modulation | S7 · Supporting Information · Figure S6 |
| RuO2 benchmark catalyst ink on glassy carbonresearch_0512__mat__ruo2_benchmark | Electrode · Pristine Control · Composite | benchmark catalyst/carbon/Nafion ink drop-castglassy carbon disk electrode | 10896 · Results and Discussion · Figure 3 |
| Zn-MOFresearch_0512__mat__zn_mof | Nanosheet · Pristine Control · Pristine Framework | acetate-ion modulation | S6 · Supporting Information · Figure S5 |
| ZnCo-MOFresearch_0512__mat__znco_mof | Nanosheet · Pristine Control · Mixed Metal | acetate-ion modulation | S10 · Supporting Information · Figure S9 |
| ZnNi-MOFresearch_0512__mat__znni_mof | Nanosheet · Pristine Control · Mixed Metal | acetate-ion modulation | S10 · Supporting Information · Figure S9 |