Wang Y., Wang J., Zeng J. et al. · Journal of Materials Chemistry A · 2025 · 42273-42280
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-HITP nanosheets are structurally and chemically stable in acidic 0.5 M H2SO4 conditions relevant to HER testing.
Caveat: Long-term electrochemical stability is directly shown for Ni-HITP NSs; analogous long-term tests for CoNi-HITP are not reported in the extracted text.
p005 / 42277 · Results and discussion · Fig. S17-S19 · Linked to 4 structured results
Mixed-metal CoNi-HITP nanosheets provide the best HER performance among the paper's M-HITP nanosheets at high current density and in specific activity.
Caveat: The exact precursor recipe for CoNi-HITP nanoparticles is only partially specified.
p006 / 42278 · Results and discussion · Fig. 3e-h · Linked to 3 structured results
Ni-HITP nanosheets show better acidic HER kinetics than Ni-HITP nanoparticles, with lower overpotential, lower Rct and lower Tafel slope.
Caveat: Application data use catalyst-ink RDE electrodes rather than intrinsic transport devices.
p005 / 42277 · Results and discussion · Fig. 3a-c · Linked to 6 structured results
Reconstruction preserves the crystalline Ni-HITP framework in nanosheets, unlike TMClO4 control conditions that collapse the framework.
Caveat: Detailed text focuses on Ni-HITP; Co and CoNi preservation is supported mainly by morphology/EDS and performance.
p004 / 42276 · Results and discussion · Fig. 2a-b · Linked to 2 structured results
The nanosheet architecture increases Ni-HITP powder conductivity by about eightfold relative to nanoparticles.
Caveat: Conductivity was reported at 30 MPa on powders; no single-crystal/film mobility was reported.
p004 / 42276 · Results and discussion · Fig. 2e · Linked to 2 structured results
TMAH-mediated sonication converts M-HITP nanoparticles into nanosheets by an initial tetramethylammonium-cation-mediated arrangement followed by an anion-dependent reconstruction step; hydroxide helps preserve crystallinity.
Caveat: Exact molecular-level pathway is inferred from time-resolved SEM/FTIR/Raman and counter-ion controls.
p003 / 42275 · Results and discussion · Fig. 1j; Fig. S13-S15 · Linked to 3 structured results
DFT attributes the superior CoNi-HITP HER activity to Co serving as the primary active centre, with Ni incorporation slightly upshifting the Co d-band centre and strengthening H* adsorption.
Caveat: Computational model systems do not constitute synthesis routes under the v2 protocol.
p006 / 42278 · Results and discussion · Fig. 4 · Linked to 5 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Co-HITPBrowse family: Co₃(HITP)₂ / Co–HITP | Co-HITP (cobalt HITP framework)Co · HITP | 2D · PristineConductive HITP-based MOF; Co-HITP nanoparticles are crystalline and can be reconstructed into nanosheets. | p004 / 42276 · Results and discussion · Fig. 1k |
| CoNi-HITPBrowse family: Co/Ni–HITP family | CoNi-HITP mixed-metal HITP frameworkCo and Ni · HITP | 2D · PristineBimetallic HITP conductive MOF nanosheets with Co and Ni uniformly distributed; Co/Ni atomic ratio 1.82 by ICP. | p004 / 42276 · Results and discussion · Fig. 1l |
| Cu-HITPBrowse family: Cu₃(HITP)₂ / Cu–HITP | Cu-HITP (copper HITP framework)Cu · HITP | 2D · PristineCrystalline HITP-based MOF nanoparticle/aggregate; included in M-HITP screening. | p002 / 42274 · Results and discussion · Fig. S1-S4 |
| Fe-HITP | Fe-HITP (iron HITP framework)Fe · HITP | unknown · PristineAmorphous M-HITP product in this synthesis according to XRD. | p002 / 42274 · Results and discussion · Fig. S1 |
| Ni-HITPBrowse family: Ni₃(HITP)₂ / Ni–HITP | Ni-HITP (nickel 2,3,6,7,10,11-hexaaminotriphenylene framework)Ni · 2,3,6,7,10,11-hexaaminotriphenylene (HITP) | 2D · PristineConductive HITP-based MOF; crystalline Cu/Co/Ni-HITP show XRD peaks assigned to (100), (200), (210), (220) in the ab plane and a c-axis peak at 27.8 degrees. | p002 / 42274 · Results and discussion · Fig. S1 |
| Zn-HITP | Zn-HITP (zinc HITP framework)Zn · HITP | unknown · PristineAmorphous M-HITP product in this synthesis according to XRD. | p002 / 42274 · Results and discussion · Fig. S1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| DFT slab model Co-HITPresearch_0599__mat__co_hitp | Model · Model System · Model | periodic slab model with H* adsorption model | p006 / 42278 · Results and discussion · Fig. 4a; Fig. S21 |
| Co-HITP nanoparticles (Co-HITP NPs)research_0599__mat__co_hitp | Powder · Pristine Control · Pristine Framework | hydrothermally synthesised nanoparticle/aggregate powder | p002 / 42274 · Results and discussion · Fig. S3-S4 |
| Co-HITP nanosheets (Co-HITP NSs)research_0599__mat__co_hitp | Nanosheet · Target Sample · Pristine Framework | Co-HITP nanoparticles reconstructed by TMAH sonication | p004 / 42276 · Results and discussion · Fig. 1k |
| DFT slab model CoNi-HITPresearch_0599__mat__coni_hitp | Model · Model System · Model | periodic mixed-metal slab model with H* adsorption model | p006 / 42278 · Results and discussion · Fig. 4a; Fig. S21 |
| CoNi-HITP nanoparticlesresearch_0599__mat__coni_hitp | Powder · Pristine Control · Mixed Metal | mixed-metal M-HITP nanoparticle precursor | p002 · Materials synthesis |
| CoNi-HITP nanosheets (CoNi-HITP NSs)research_0599__mat__coni_hitp | Nanosheet · Target Sample · Mixed Metal | CoNi-HITP nanoparticles reconstructed by TMAH sonication | p004 / 42276 · Results and discussion · Fig. 1l |
| Cu-HITP nanoparticlesresearch_0599__mat__cu_hitp | Powder · Paper Level Unspecified · Pristine Framework | hydrothermally synthesised nanoparticle/aggregate powder | p002 / 42274 · Results and discussion · Fig. S1-S4 |
| Fe-HITP nanoparticles/aggregateresearch_0599__mat__fe_hitp | Powder · Paper Level Unspecified · Pristine Framework | hydrothermally synthesised amorphous aggregate powder | p002 / 42274 · Results and discussion · Fig. S1-S4 |
| DFT slab model Ni-HITPresearch_0599__mat__ni_hitp | Model · Model System · Model | periodic slab model with H* adsorption model | p006 / 42278 · Results and discussion · Fig. 4a; Fig. S21 |
| Ni-HITP sonicated in NaOH controlresearch_0599__mat__ni_hitp | Powder · Paper Level Unspecified · Unknown | Ni-HITP treated in NaOH aqueous solution during sonication | p002-p003 / 42274-42275 · Results and discussion · Fig. S7 |
| Ni-HITP nanoparticles (Ni-HITP NPs)research_0599__mat__ni_hitp | Powder · Pristine Control · Pristine Framework | hydrothermally synthesised nanoparticle/aggregate powder | p002 · Materials synthesis |
| Ni-HITP nanosheets (Ni-HITP NSs)research_0599__mat__ni_hitp | Nanosheet · Target Sample · Pristine Framework | M-HITP nanoparticles sonicated in aqueous TMAH and freeze-dried~30 nm average thickness | p003 / 42275 · Results and discussion · Fig. 1 |
| Ni-HITP NS TMAH dilution seriesresearch_0599__mat__ni_hitp | Nanosheet · Paper Level Unspecified · Pristine Framework | Ni-HITP sonicated in 25 wt% TMAH serially diluted 1/2, 1/4, 1/8, 1/16 | p003 / 42275 · Results and discussion · Fig. S10 |
| Ni-HITP assembly in tetramethylammonium perchlorateresearch_0599__mat__ni_hitp | Unknown · Paper Level Unspecified · Unknown | 2 h TMAH preformed assembly transferred to TMClO4 and sonicated | p003 / 42275 · Results and discussion · Fig. S13 |
| Zn-HITP nanoparticles/aggregateresearch_0599__mat__zn_hitp | Powder · Paper Level Unspecified · Pristine Framework | hydrothermally synthesised amorphous aggregate powder | p002 / 42274 · Results and discussion · Fig. S1-S4 |