Suliman M.H., Tawfiq Alfuhaid L., Khan A. et al. · Fuel · 2024 · 131044
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-BTB outperforms the IrO2 and Co3O4 comparison electrodes in OER activity, with 170 mV overpotential at 10 mA cm-2, larger current density at 1.8 V, and a lower Tafel slope.
Caveat: The abstract and discussion disagree on the IrO2 overpotential at 10 mA cm-2.
5 · Result and discussion · Figure 6 · Linked to 9 structured results
The paper describes Co-BTB as electrically conductive/electrochemically active, but the assigned documents do not report direct bulk or device electrical conductivity; the support is indirect through Cdl/ECSA and EIS charge-transfer resistance.
Caveat: No S cm-1 conductivity value, I-V transport measurement, or thermoelectric measurement is reported.
1 · Abstract · Linked to 2 structured results
The cobalt oxide control prepared without BTB is treated as Co3O4 based on the main-text assignment and Figure S1 PXRD legend, despite a single SI synthesis typo naming Co2O3.
Caveat: The SI synthesis paragraph uses Co2O3 once; no full peak table is provided.
2 · Result and discussion · Figure S1a · Linked to 1 structured result
Co-BTB is crystalline and resembles the literature Co-BTB structure based on PXRD peaks at 5.67 and 10.02 deg.
Caveat: No CIF or full Rietveld/structural refinement is supplied in the assigned documents.
2 · Result and discussion · Figure 2a · Linked to 2 structured results
The Type I N2 isotherm, 400 m2 g-1 BET area, and 10-15 A pore-size range support assigning Co-BTB as microporous.
Caveat: Pore-size range is reported from the inset rather than tabulated.
2 · Result and discussion · Figure 2b · Linked to 4 structured results
The higher-binding-energy Co 2p shift in Co-BTB relative to cobalt oxide suggests electronic interaction/electron transfer between BTB and cobalt.
Caveat: The shift magnitude is not numerically reported.
3 · Result and discussion · Figure 4b · Linked to 3 structured results
The authors assign equation (3) in the Krasil'shchikov OER mechanism as the rate-determining step because the Co-BTB Tafel slope of 46.5 mV dec-1 is close to 45 mV dec-1.
Caveat: Mechanistic assignment is inferred from Tafel slope agreement, not from direct intermediate detection.
5 · Result and discussion · Equations 1-4 · Linked to 1 structured result
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| cobalt oxide control | Co3O4cobalt oxide | unknown · Unknowncontrol cobalt oxide phase assigned by PXRD and XPS in Figure S1 | 2 · Result and discussion · Figure S1a |
| Co-BTB cobalt-benzene-1,3,5-tribenzoate metal-organic framework | Co-BTB; full empirical formula not reportedcobalt ions / cobalt clusters · benzene-1,3,5-tribenzoate (BTB) from H3BTB | 2D · Pristinecrystalline microporous Co-BTB MOF; PXRD peaks match reported Co-BTB and SEM/TEM show sheet-like flower morphology | 1 · Abstract |
| iridium oxide benchmark catalyst | IrO2iridium oxide | unknown · Unknownbenchmark OER electrocatalyst used for comparison | 5 · Result and discussion · Figure 6 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Co3O4 control catalyst ink on conductive carbon paperresearch_0878__mat__mat_co3o4 | Electrode · Pristine Control · Composite | control catalyst ink drop-cast by the same electrode-preparation method as the prepared catalystsconductive carbon paper, 1 cm2 | SI text · 2.3 The electrode preparation |
| cobalt oxide control powderresearch_0878__mat__mat_co3o4 | Powder · Pristine Control · Unknown | prepared by the Co-BTB method without H3BTB linker | SI text · Synthesis of Cobalt Metal-Organic Framework (Co-BTB) |
| Co-BTB catalyst ink on conductive carbon paperresearch_0878__mat__mat_cobtb | Electrode · Target Sample · Composite | 10 mg catalyst dispersed in isopropanol/deionised water/Nafion, sonicated 20 min, 100 uL drop-cast and air-driedconductive carbon paper, 1 cm2 | SI text · 2.3 The electrode preparation |
| as-synthesised Co-BTB MOF powderresearch_0878__mat__mat_cobtb | Powder · Target Sample · Pristine Framework | filtered, washed with DMF and dichloromethane, and dried under vacuum | SI text · Synthesis of Cobalt Metal-Organic Framework (Co-BTB) |
| IrO2 benchmark electroderesearch_0878__mat__mat_iro2 | Electrode · Pristine Control · Composite | benchmark catalyst electrode measured under the same electrochemical conditions; preparation not separately specifiedconductive carbon paper, inferred same electrode configuration | 5 · Result and discussion · Figure 6 |