Primary studyCore evidenceTransport Physics

Synthesis and characterization of Fe3O4-supported metal–organic framework MIL-101(Fe) for a highly selective and sensitive hydrogen peroxide electrochemical sensor

Salman F., Zengin A., Celik Kazici H. · Ionics · 2020 · 5221-5232

4materials
4samples
3synthesis routes
15measurements
48results
6claims and caveats

Evidence map

Open a family to keep every result attached to its sample, method and conditions.

Author interpretations and caveats

Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.

Application RelevanceSupport assessment: High

The sensor was applicable to H2O2 detection in an industrial hair lightener sample.

Caveat: Only one industrial sample type is reported.

5230 · Analytical application · Table 3 · Linked to 3 structured results

Application RelevanceSupport assessment: High

The MIL-101(Fe)@Fe3O4/NGCE sensor showed low DPV LOD and high CA sensitivity for non-enzymatic H2O2 sensing.

Caveat: Application performance is for the composite electrode, not pristine MIL-101(Fe).

5221 · Abstract · Linked to 4 structured results

Composite RoleSupport assessment: Medium

The improved H2O2 response was attributed to metal nanoparticles with high electrical conductivity and iron redox activity.

Caveat: No direct electrical conductivity measurement was reported for the powder or electrode; this is an interpretation from electrochemical response.

5224 · Electrochemical properties · Fig. 4 · Linked to 3 structured results

Phase AssignmentSupport assessment: High

MIL-101(Fe) formed a shell on Fe3O4 nanoparticles and the Fe3O4 crystallinity was preserved after coating.

Caveat: No CIF or Rietveld refinement supplied in the assigned documents.

5224 · XRD analysis · Fig. 3 · Linked to 4 structured results

Phase AssignmentSupport assessment: Medium

XPS O 1s and C 1s features were interpreted as evidence that Fe3+ ions coordinated with H3btc to form MIL-101(Fe) on Fe3O4.

Caveat: Assignment is based on fitted XPS peak positions rather than direct structural refinement.

5224 · XPS analysis · Fig. 2 · Linked to 3 structured results

Transport MechanismSupport assessment: High

The H2O2 electrochemical reaction on MIL-101(Fe)@Fe3O4/NGCE was assigned to a diffusion-controlled process.

Caveat: Based on linear dependence of peak current on square root of scan rate.

5225 · Electrochemical properties · Fig. 5 · Linked to 2 structured results

Material identities

Names and aliases are kept exactly within the paper’s own identity model.

MaterialCompositionStructure contextSource
Fe3O4 nanoparticlesFe3O4iron oxide nanoparticle core0D · Pristinespherical magnetic nanoparticles used as the core/support for MIL-101(Fe) growth5223 · SEM and TEM analysis · Fig. 1a,c
MIL-101(Fe)@Fe3O4MIL-101(Fe) shell on Fe3O4 coreFe3+ MIL-101 nodes plus Fe3O4 core · benzene-1,3,5-tricarboxylate (H3btc-derived)3D · Compositecore-shell magnetic MOF nanoparticles with MIL-101(Fe) layer on Fe3O45223 · SEM and TEM analysis · Fig. 1d
MIL-101(Fe)@Fe3O4/NGCEMIL-101(Fe)@Fe3O4 plus Nafion on glassy carbon electrodeFe3+ MIL-101 nodes plus Fe3O4 core · benzene-1,3,5-tricarboxylate (H3btc-derived)3D · CompositeNafion glassy carbon electrode modified with MIL-101(Fe)@Fe3O4 nanocomposite5222 · Preparation of the MIL-101(Fe)@Fe3O4/NGCE sensor
Nafion glassy carbon electrodeNafion/GCEunknown · Model Systembare NGCE electrode control5224 · Electrochemical properties of MIL-101(Fe)@Fe3O4/NGCE · Fig. 4

Sample register

Sample form, processing state and composition status define the context for measurements.

Show 4 sample records
SampleForm and roleProcessing and geometrySource
bare NGCEresearch_0465__mat__m_ngceElectrode · Pristine Control · Unknownpolished GCE with Nafion control surfaceglassy carbon electrode5224 · Electrochemical properties of MIL-101(Fe)@Fe3O4/NGCE · Fig. 4
Fe3O4 nanoparticlesresearch_0465__mat__m_fe3o4_npPowder · Composite Component · Unknownsolvothermal magnetic nanoparticles, later MAA-modified for MOF growth5222 · Preparation of Fe3O4@MIL-101(Fe) nanoparticles
MIL-101(Fe)@Fe3O4/NGCE sensorresearch_0465__mat__m_mil101_fe_fe3o4_ngceElectrode · Target Sample · CompositeMIL-101(Fe)@Fe3O4/Nafion dispersion drop-moulded on polished NGCE and dried at 70 CNafion glassy carbon electrode5222 · Preparation of the MIL-101(Fe)@Fe3O4/NGCE sensor
MIL-101(Fe)@Fe3O4 nanoparticlesresearch_0465__mat__m_mil101_fe_fe3o4Powder · Target Sample · Compositelayer-by-layer FeCl3/H3btc growth on MAA@Fe3O4, dried under vacuum at 200 CFe3O4 nanoparticle core · MOF shell approximately 25 nm5223 · SEM and TEM analysis · Fig. 1d