Feng Q., Wang W., Yang X. et al. · Nano Research · 2025 · 94907439
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.
Ni-PTC-60 gives high flow-cell H2O2 concentration, production rate, and selectivity, supporting practical electrosynthesis relevance.
Caveat: Reported flow-cell stability is 3 h, shorter than several comparison catalysts in Table S6.
6 · 3.3 Electrocatalytic performance in the flow cell · Figure 4 · Linked to 4 structured results
Ni-PTC, not XC72 carbon black, is the main source of 2e ORR activity in the catalyst ink electrodes.
Caveat: Electrodes include carbon black and Nafion, so the comparison is application-context evidence rather than a pure-powder transport measurement.
5 · 3.2 Electrocatalytic 2e ORR performance · Figure 3b · Linked to 2 structured results
The target framework is a novel 2D conductive Ni-PTC MOF composed of nickel nodes and PTCA linkers.
Caveat: No direct electrical conductivity value is reported; 'conductive' is asserted through framework design and electrochemical charge-transfer evidence.
1 · Abstract · Linked to 3 structured results
The Ni-PTC-60 nanobelt morphology improves exposed surface area, pore escape of H2O2, ECSA, and 2e ORR selectivity.
Caveat: The causal link is inferred from morphology/porosity/electrochemical correlations rather than isolated conductivity measurements.
5 · 3.2 Electrocatalytic 2e ORR performance · Figure 3 · Linked to 4 structured results
Reaction temperature controls Ni-PTC morphology: 25 degC favours nanorods, 60 degC favours ultrathin nanobelts, and 80 degC favours nanospheres.
Caveat: Mechanistic nucleation/growth explanation is interpretive, but morphology assignments are directly imaged.
3 · 3.1 Synthesis and characterization of Ni-PTC · Figure 1 · Linked to 3 structured results
The pi-conjugated PTCA ligand shifts the Ni d-band centre closer to the Fermi level and promotes oxygen activation in 2e ORR.
Caveat: This mechanism is based on simplified DFT models and projected density of states rather than direct operando spectroscopy.
6 · 3.2 Electrocatalytic 2e ORR performance · Figure S11 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| nickel hydroxide nanosheets | Ni(OH)2Ni | 2D · PristineNickel hydroxide nanosheet precursor and computational comparison model. | 2 · 2.1 Synthesis of Ni-PTC |
| nickel pyrene-1,3,6,8-tetracarboxylate conductive MOF | Ni-PTCNi nodes; modelled as distorted Ni-O6 octahedra with distinct Ni environments · pyrene-1,3,6,8-tetracarboxylate (PTCA) | 2D · PristineLayered 2D conductive MOF formed from nickel and PTCA; simulated XRD fits the experimental Ni-PTC-60 pattern. | 1 · Abstract |
| XC72 carbon black | C | unknown · UnknownCommercial carbon black electrochemical control. | 5 · 3.2 Electrocatalytic 2e ORR performance · Figure 3b |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Ni(OH)2 DFT modelresearch_0900__mat__mat_ni_oh2 | Model · Model System · Model | Simplified Ni(OH)2 crystal model for computational comparison. | 6 · 3.2 Electrocatalytic 2e ORR performance · Figure S11 |
| Ni(OH)2 nanosheetsresearch_0900__mat__mat_ni_oh2 | Nanosheet · Pristine Control · Pristine Framework | Centrifuged and re-dispersed in DMF before MOF formation. | 2 · 2.1 Synthesis of Ni-PTC |
| Ni-PTC-25research_0900__mat__mat_ni_ptc | Powder · Pristine Control · Pristine Framework | Yellow powder obtained after centrifugation, DMF/CHCl3 washing, and vacuum drying; reaction temperature 25 degC. | 2 · 2.1 Synthesis of Ni-PTC |
| Ni-PTC-25 RRDE catalyst electroderesearch_0900__mat__mat_ni_ptc | Electrode · Composite Sample · Composite | Catalyst ink electrode prepared using the Ni-PTC-25 morphology-control powder.glass carbon disk in RRDE | 5 · 3.2 Electrocatalytic 2e ORR performance · Figure 3 |
| Ni-PTC-60 flow-cell gas-diffusion electroderesearch_0900__mat__mat_ni_ptc | Electrode · Composite Sample · Composite | Ni-PTC ink deposited on 1 cm x 1 cm carbon paper; catalyst loading 0.25 mg cm-2.YLS-30T gas diffusion layer carbon paper | 2 · 2.2 Preparation of working electrode |
| Ni-PTC-60 DFT modelresearch_0900__mat__mat_ni_ptc | Model · Model System · Model | Primitive cell model with fully optimised atomic positions. | 3 · 2.4 DFT calculations · Figure S11 |
| Ni-PTC-60research_0900__mat__mat_ni_ptc | Powder · Target Sample · Pristine Framework | Yellow powder obtained after centrifugation, DMF/CHCl3 washing, and vacuum drying; reaction temperature 60 degC.about 14 nm by AFM | 3 · 3.1 Synthesis and characterization of Ni-PTC · Figure 1b,c |
| Ni-PTC-60 RRDE catalyst electroderesearch_0900__mat__mat_ni_ptc | Electrode · Composite Sample · Composite | Catalyst ink containing Ni-PTC-60, carbon black, isopropanol, and Nafion; loading 0.1 mg cm-2.glass carbon disk in RRDE | 2 · 2.2 Preparation of working electrode |
| Ni-PTC-80research_0900__mat__mat_ni_ptc | Powder · Pristine Control · Pristine Framework | Yellow powder obtained after centrifugation, DMF/CHCl3 washing, and vacuum drying; reaction temperature 80 degC. | 3 · 3.1 Synthesis and characterization of Ni-PTC · Figure 1e |
| Ni-PTC-80 RRDE catalyst electroderesearch_0900__mat__mat_ni_ptc | Electrode · Composite Sample · Composite | Catalyst ink electrode prepared using the Ni-PTC-80 morphology-control powder.glass carbon disk in RRDE | 5 · 3.2 Electrocatalytic 2e ORR performance · Figure 3 |
| XC72 carbon black RRDE control electroderesearch_0900__mat__mat_xc72_cb | Electrode · Pristine Control · Composite | Carbon black control electrode used in O2-saturated 0.1 M KOH.glass carbon disk in RRDE | 5 · 3.2 Electrocatalytic 2e ORR performance · Figure 3b |