Chen S., Xie Y., Guo X. et al. · Microchemical Journal · 2022 · 107715
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 Ag/2D Zn-MOF/GCE sensor can monitor AA-stimulated H2O2 release from living cells and differentiates higher HeLa response from H9C2 response.
Caveat: Cell H2O2 output values are figure-read response estimates; no raw calibration conversion for cell concentration was extracted.
main p.9 · 3.7. In-situ and real-time detection · Fig. 6F · Linked to 2 structured results
The paper uses EIS charge-transfer resistance as evidence for electron-transfer behaviour, but it does not report standalone dc conductivity or intrinsic electrical transport for pristine Zn-MOF powders.
Caveat: Transport evidence is electrode/interfacial electrochemistry, not four-probe material conductivity.
main p.6 · 3.2. Characterization of Zn-MOF · Fig. S2C · Linked to 4 structured results
The 2D Zn-MOF support disperses and stabilises Ag nanoparticles, provides accessible surface area and helps charge/electrolyte transport, giving higher H2O2 response than the 3D Zn-MOF composite.
Caveat: The mechanistic explanation is argued from morphology, CV/EIS and sensing response rather than direct conductivity of the isolated MOF.
main p.7 · 3.3. Characterization of different modified electrodes · Linked to 4 structured results
Ag/2D Zn-MOF/GCE gives the best H2O2 electrocatalytic/sensing performance among bare GCE, pristine Zn-MOF/GCE, Ag/GCE and Ag/3D Zn-MOF/GCE comparators.
Caveat: Some comparative peak-current values are only shown graphically and were not digitised in this extraction.
main p.6 · 3.3. Characterization of different modified electrodes · Fig. 4C · Linked to 4 structured results
The SI proposes that Ag catalyses H2O2 decomposition and subsequent oxygen reduction, while the porous 2D Zn-MOF increases surface area and Ag improves charge-transfer ability.
Caveat: Mechanism is proposed in SI; no direct mechanistic kinetic constants are reported.
SI p.S6 · S2.1. Electrochemical characterization · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Ag/2D Zn-MOF nanozyme composite | Ag nanoparticles on 2D Zn-MOF/GCEZn-MOF support plus electrodeposited Ag nanoparticles · TCPP/pyrazine 2D Zn-MOF support | 2D · CompositeSnowflake-like Ag nanostructures dispersed on 2D Zn-MOF nanosheets on glassy carbon electrode. | main p.6 · 3.3. Characterization of different modified electrodes · Fig. 3 |
| Ag/3D Zn-MOF nanozyme composite | Ag nanoparticles on 3D Zn-MOF/GCEZIF-8-type Zn-MOF support plus electrodeposited Ag nanoparticles · 2-methylimidazole 3D Zn-MOF support | 3D · CompositeAggregated Ag nanoparticle clusters on 3D Zn-MOF modified glassy carbon electrode. | main p.6 · 3.3. Characterization of different modified electrodes · Fig. 3 |
| Bare glassy carbon electrode | GCEnot_applicable · not_applicable | unknown · Model SystemPolished glassy carbon electrode baseline. | main p.3 · 2.2. Electrochemical preparation of sensing electrodes |
| Noble-metal nanoparticle modified GCE controls | Ag/GCE, Au/GCE, Pt/GCEMetal nanoparticles on glassy carbon electrode · not_applicable | 0D · Model SystemElectrodeposited Ag, Au or Pt nanoparticle controls. | main p.3 · 2.2. Electrochemical preparation of sensing electrodes · Fig. 1 |
| Polyhedral 3D Zn-MOF nanocrystals (ZIF-8)Browse family: ZIF-8 / Zn(mIm)₂ | Zn(2-methylimidazolate)2, ZIF-8-type; exact empirical formula not reportedZn ions connected by imidazolate linkers · 2-methylimidazole (2-MeIm) | 3D · PristineZIF-8-type 3D Zn-MOF with rhombic/polyhedral nanocrystals and sodalite topology. | main p.5 · 3.2. Characterization of Zn-MOF and its electrochemical properties · Fig. 2 |
| 2D Zn-MOF nanosheets | Zn-TCPP/pyrazine Zn-MOF; exact empirical formula not reportedZn ions coordinated in porphyrinic 2D MOF nanosheets · Tetrakis(4-carboxyphenyl)porphyrin (TCPP) with pyrazine | 2D · PristineUltrathin 2D Zn-MOF nanosheets, micropore-structured layer with pore size about 1 nm and aspect ratio about 200. | main p.5 · 3.2. Characterization of Zn-MOF and its electrochemical properties · Fig. 2 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| 2D Zn-MOF/GCEresearch_0412__mat__zn_tcpp_2d_mof | Electrode · Pristine Control · Pristine Framework | 2D Zn-MOF suspension in water/Nafion drop-coated on cleaned GCE and dried at room temperature.glassy carbon electrode | main p.3 · 2.2. Electrochemical preparation of sensing electrodes |
| 3D Zn-MOF/GCEresearch_0412__mat__zif8_3d_zn_mof | Electrode · Pristine Control · Pristine Framework | 3D Zn-MOF suspension in water/Nafion drop-coated on cleaned GCE and dried at room temperature.glassy carbon electrode | main p.3 · 2.2. Electrochemical preparation of sensing electrodes |
| Ag/2D Zn-MOF/GCEresearch_0412__mat__ag_2d_zn_mof_composite | Electrode · Target Sample · Composite | Ag nanoparticles electrodeposited on drop-coated 2D Zn-MOF/GCE.glassy carbon electrode | main p.3 · 2.2. Electrochemical preparation of sensing electrodes · Fig. 3 |
| Ag/3D Zn-MOF/GCEresearch_0412__mat__ag_3d_zn_mof_composite | Electrode · Composite Sample · Composite | Ag nanoparticles electrodeposited on drop-coated 3D Zn-MOF/GCE.glassy carbon electrode | main p.3 · 2.2. Electrochemical preparation of sensing electrodes · Fig. 3 |
| Ag/GCEresearch_0412__mat__metal_np_gce_controls | Electrode · Model System · Model | Ag nanoparticles electrodeposited from 1.0 mM AgNO3 at -0.2 V vs Ag/AgCl.glassy carbon electrode | main p.3 · 2.2. Electrochemical preparation of sensing electrodes · Fig. 1 |
| Au/GCEresearch_0412__mat__metal_np_gce_controls | Electrode · Model System · Model | Au nanoparticles prepared similarly from 1.0 mM HAuCl4.glassy carbon electrode | main p.3 · 2.2. Electrochemical preparation of sensing electrodes · Fig. 1 |
| Polished bare GCEresearch_0412__mat__bare_gce_model | Electrode · Model System · Model | Polished with 0.3 and 0.05 um Al2O3, ultrasonically cleaned and N2 dried.glassy carbon electrode · 3 mm diameter GCE in SI apparatus | main p.3 · 2.2. Electrochemical preparation of sensing electrodes |
| Pt/GCEresearch_0412__mat__metal_np_gce_controls | Electrode · Model System · Model | Pt nanoparticles prepared similarly from 1.0 mM H2PtCl6.glassy carbon electrode | main p.3 · 2.2. Electrochemical preparation of sensing electrodes · Fig. 1 |
| As-synthesised polyhedral 3D Zn-MOF nanocrystalsresearch_0412__mat__zif8_3d_zn_mof | Powder · Pristine Control · Pristine Framework | Room-temperature methanol synthesis; centrifuged, washed with water and MeOH, vacuum dried.mean particle diameter about 300 nm | SI p.S4 · S1.4. Fabrication of polyhedral 3D Zn-MOF nanocrystals |
| As-synthesised 2D Zn-MOF nanosheet powderresearch_0412__mat__zn_tcpp_2d_mof | Nanosheet · Pristine Control · Pristine Framework | Solvothermal product washed with ethanol, centrifuged and vacuum dried.nanosheet thickness <5 nm reported in main text | SI p.S3 · S1.3. Synthesis of 2D Zn-MOF nanosheets |