Wan J., Shen Y., Xu L. et al. · Journal of Electroanalytical Chemistry · 2021 · 115374
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 Fc oxidation peak at 0.57 V is stable and acts as a target-independent internal reference for ratiometric DPASV detection.
Caveat: Repeated-scan DPASV stability is described in the main text and SI Fig. S4 caption/text; no numerical RSD for the Fc peak is reported.
SI rendered text · DPASV curves of 10 measurements on the Fc-NH2-Ni-MOF/GCE in 0.1 M ABS · Fig. S4 · Linked to 4 structured results
The ratiometric strategy improves reproducibility compared with non-ratiometric stripping-current readout.
Caveat: Comparison is made for five parallel electrodes in the reported assay conditions.
p008 · 3.5. Selectivity, reproducibility, and stability · Fig. 8a · Linked to 6 structured results
Fc-NH2-Ni-MOF/GCE is applicable to real-water analysis, with near-quantitative tap-water spike recoveries and river-water recovery values comparable with ICP-AES.
Caveat: River-water data are from the SI text table; the SI has text-layer artefacts but the table values are readable.
SI rendered text · Detection of Cu2+, Pb2+ and Cd2+ in river water samples using ICP-AES and this method · Table S2 · Linked to 18 structured results
Post-synthetic Fc-COOH modification retains the NH2-Ni-MOF framework/nanoplate structure while introducing Fc-related Fe/XRD/FTIR features.
Caveat: Full structural model/topology is not given in the main text.
p003 · 3.1. Material characterization · Fig. 1 · Linked to 4 structured results
Fc modification improves the charge-transfer ability/electrical conductivity of the MOF electrode, as shown by higher ferricyanide CV current and smaller EIS semicircle for Fc-NH2-Ni-MOF/GCE relative to NH2-Ni-MOF/GCE.
Caveat: No absolute solid-state conductivity is reported; evidence is electrochemical charge-transfer proxy data from CV/EIS.
p006 · 3.2. Electrochemical characterization · Fig. 4 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| bare glassy carbon electrode | C | unknown · Model SystemCommercial glassy carbon electrode control used as working electrode. | p002 · 2.1. Chemicals and Instruments |
| Fc-NH2-Ni-MOF | Not specifiedNi(II) ions with incorporated ferrocenecarboxylate functionality · NH2-BDC framework ligands plus ferrocenecarboxylic acid-derived Fc groups | unknown · CompositeFc-functionalised NH2-Ni-MOF retaining the nanoplate/crystalline MOF structure, with Fe detected by XPS/EDS and new XRD/FTIR features assigned to Fc incorporation. | p002 · Introduction |
| Fc-Ni material | Not specifiedNi(II) from Ni(NO3)2.6H2O coordinated with ferrocenecarboxylate-derived species · ferrocenecarboxylic acid (Fc-COOH) | unknown · Model SystemFc-Ni control material prepared by replacing NH2-BDC with equimolar Fc-COOH in the NH2-Ni-MOF preparation; used for FT-IR comparison of Fc-COOH/Ni coordination. | SI rendered text · 1. Preparation of the Fc-Ni |
| NH2-Ni-MOF | Not specifiedNi(II) ions · 2-aminoterephthalic acid (NH2-BDC) | unknown · PristineNi(II)-based MOF with rhombic-like nanoplate morphology; XRD consistent with the previously reported NH2-Ni-MOF from Guo et al. | p002 · Introduction |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| bare GCEresearch_0388__mat__mat_bare_gce | Electrode · Model System · Model | Unmodified glassy carbon working electrode.glassy carbon electrode | p004 · 3.2. Electrochemical characterization · Fig. 4 |
| Fc-NH2-Ni-MOF/GCEresearch_0388__mat__mat_fc_nh2_ni_mof | Electrode · Target Sample · Composite | 10 mg Fc-NH2-Ni-MOF dispersed in 10 mL absolute ethanol; 10 uL transferred to GCE and dried naturally at room temperature.glassy carbon electrode | p002 · 2.4. Fabrication of the modified electrodes |
| Fc-NH2-Ni-MOF powderresearch_0388__mat__mat_fc_nh2_ni_mof | Powder · Target Sample · Guest Loaded | Post-synthetically Fc-functionalised NH2-Ni-MOF, washed/soaked in ultrapure water and vacuum dried at room temperature. | p002 · 2.3. Preparation of the Fc-NH2-Ni-MOF |
| Fc-Ni powderresearch_0388__mat__mat_fc_ni_control | Powder · Model System · Unknown | Hydrothermal product from Ni(NO3)2.6H2O, Fc-COOH and PVP in DMF/water; centrifuged, ethanol-washed and dried at 80 C overnight. | SI rendered text · 1. Preparation of the Fc-Ni |
| NH2-Ni-MOF/GCEresearch_0388__mat__mat_nh2_ni_mof | Electrode · Pristine Control · Composite | NH2-Ni-MOF ethanol dispersion drop-cast onto GCE and dried naturally at room temperature.glassy carbon electrode | p002 · 2.4. Fabrication of the modified electrodes |
| NH2-Ni-MOF powderresearch_0388__mat__mat_nh2_ni_mof | Powder · Pristine Control · Pristine Framework | Hydrothermal powder product, washed with ethanol and dried at 80 C overnight. | p002 · 2.2. Preparation of the NH2-Ni-MOF |