Ahmad M., Quan X., Chen S. et al. · Applied Catalysis B: Environmental · 2020 · 118534
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.
CUCs-MIL-88B-Fe/Ti3C2 gives the strongest photo-Fenton degradation and mineralisation performance among the tested catalysts under pH 3 and 10 mM H2O2.
Caveat: Application values depend on pollutant concentration, light source and pH; some comparison curves are graphical.
p.7-p.8 · 3.4 · Figs. 9,10 · Linked to 4 structured results
The final composite shows reusable photo-Fenton performance with limited Fe leaching under the tested acidic conditions.
Caveat: Activity drops slightly after five cycles, and leaching is only numerically reported for the highest pH=3 point in the text.
p.9-p.10 · 3.5 · Fig. 13 · Linked to 3 structured results
The paper contains charge-transfer and photoelectrochemical evidence but no direct DC electrical conductivity, Seebeck coefficient or thermoelectric measurement for MIL-88B-Fe or the composite.
Caveat: Absence assessed from the main text, SI text layer and rendered SI pages.
p.3,p.5 · 2.3; 3.1 · Fig. 6 · Linked to 3 structured results
Ti3C2 nanosheets act as a conductive co-catalyst/charge separator that increases photocurrent, lowers interfacial charge-transfer resistance and suppresses recombination in the CUCs-MIL-88B-Fe/Ti3C2 composite.
Caveat: The paper reports transient photocurrent/EIS/PL, Mott-Schottky and work-function arguments, not a direct four-probe conductivity value for the composite; the Ti3C2 1.95 eV value is ambiguous between Tauc-derived gap/intercept and work-function discussion.
p.5-p.6,p.10 · 3.1; 3.7 · Figs. 6,15 · Linked to 6 structured results
Higher Lewis acidity/open Fe CUC density promotes H2O2 adsorption/activation and hydroxyl-radical generation, improving pollutant degradation.
Caveat: Mechanism is supported by probe spectroscopy, ESR and scavenger tests rather than direct observation of every intermediate.
p.7,p.10 · 3.4; 3.6 · Figs. 7,14 · Linked to 4 structured results
Creating CUCs changes MIL-88B-Fe from primarily microporous behaviour toward micro/mesoporous porosity, increasing pore volume and aiding reactant access despite lower BET area.
Caveat: The transport/diffusion enhancement is inferred from porosity and application performance, not independently measured diffusion coefficients.
p.7 · 3.3 · Fig. 8; Table 1 · Linked to 5 structured results
Vacuum thermal activation of MIL-88B-Fe removes terminal/guest molecules and exposes mixed-valence FeII/FeIII coordinatively unsaturated centres.
Caveat: Activation-induced mixed valence is inferred from XPS peak assignments and acid-site probe spectra; no crystallographic occupancy refinement is reported.
p.4,p.6 · 3.1; 3.2 · Figs. 4,7 · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| CUCs-MIL-88B-Fe | Thermally activated MIL-88B-Fe with FeII/FeIII coordinatively unsaturated centres; exact formula not reportedMixed-valence FeII/FeIII coordinatively unsaturated iron centres generated by thermal activation. · BDC linkers retained after activation. | 3D · PristineActivated MIL-88B-Fe retaining XRD pattern but with weakened peaks and newly exposed CUC/Lewis acid sites. | p.2 · 2.2.2. Synthesis of CUCs-MIL-88B-Fe |
| CUCs-MIL-88B-Fe/Ti3C2 | CUCs-MIL-88B-Fe/Ti3C2 composite; exact formula not reportedMixed-valence FeII/FeIII CUCs in MIL-88B-Fe integrated with Ti3C2 nanosheets. · BDC in MIL-88B-Fe component. | 3D · CompositeSandwich-like CUCs-MIL-88B-Fe/Ti3C2 composite with Ti3C2 lattice fringes and MOF morphology retained. | p.3 · 3.1. Basic characterizations of the catalysts · Fig. 2 |
| MIL-88B-Fe | FeIII3O[C6H4(CO2)2]3X.nH2O (X = Cl- or OH-), as reportedFe-oxo clusters / Fe octahedra with terminal H2O and OH-/F- ligands before activation. · 1,4-benzenedicarboxylate (BDC). | 3D · PristineMIL-88B-Fe crystalline framework; XRD peaks match literature at 9.2, 12.5, 16.6, 18.8, 21.9 and 25.9 degrees 2 theta. | p.2 · Introduction |
| MIL-88B-Fe/Ti3C2 | MIL-88B-Fe on Ti3C2 nanosheets; exact loading formula not reportedMIL-88B-Fe Fe nodes plus Ti3C2 MXene component. · BDC in MIL-88B-Fe component. | 3D · CompositeUnactivated MOF/MXene composite intermediate listed in DRS/TPC/EIS comparisons. | p.2 · 2.2.4. Synthesis of CUCs-MIL-88B-Fe/Ti3C2 |
| Reaction-control systems | H2O2-only or scavenger-control reaction mixture | unknown · Model SystemModel control system used to anchor catalyst-free application results. | p.7 · 3.4. Photocatalytic properties |
| Ultrathin Ti3C2 nanosheets / MXene | Ti3C2Tx (x = OH, F and O); Ti3C2 used in recipes2D titanium carbide MXene; not a MOF. | 2D · PristineFew-layer Ti3C2 nanosheets produced by HF etching, DMSO intercalation and water exfoliation. | p.2 · 2.2.3. Synthesis of Ti3C2 nanosheets |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| CUCs-MIL-88B-Fe/0.2 g Ti3C2 powderresearch_0328__mat__cucs_mil88b_fe_ti3c2 | Powder · Composite Sample · Composite | Labelled in SI loading study; presumed same hydrothermal/vacuum activation route with varied Ti3C2 amount. | p.3 · Fig. S4 |
| CUCs-MIL-88B-Fe/0.3 g Ti3C2 powderresearch_0328__mat__cucs_mil88b_fe_ti3c2 | Powder · Composite Sample · Composite | Labelled in SI loading study; presumed same hydrothermal/vacuum activation route with varied Ti3C2 amount. | p.3 · Fig. S4 |
| CUCs-MIL-88B-Fe powderresearch_0328__mat__cucs_mil88b_fe | Powder · Pristine Control · Pristine Framework | MIL-88B-Fe thermally activated at 205 C under vacuum for 12 h; brown powder stored covered. | p.2 · 2.2.2. Synthesis of CUCs-MIL-88B-Fe |
| CUCs-MIL-88B-Fe/Ti3C2 powderresearch_0328__mat__cucs_mil88b_fe_ti3c2 | Powder · Target Sample · Composite | Hydrothermal MIL-88B-Fe/Ti3C2 followed by vacuum activation at 205 C for 12 h. | p.2 · 2.2.4. Synthesis of CUCs-MIL-88B-Fe/Ti3C2 |
| H2O2-only controlresearch_0328__mat__reaction_control | Model · Model System · Model | Photo-Fenton reaction mixture without solid catalyst. | p.7 · 3.4. Photocatalytic properties |
| MIL-88B-Fe powderresearch_0328__mat__mil88b_fe | Powder · Pristine Control · Pristine Framework | Hydrothermally synthesised, centrifuged, washed with water and DMF. | p.2 · 2.2.1. Synthesis of MIL-88B-Fe |
| MIL-88B-Fe/Ti3C2 powderresearch_0328__mat__mil88b_fe_ti3c2 | Powder · Composite Sample · Composite | Hydrothermal MIL-88B-Fe grown/assembled with Ti3C2 before thermal activation. | p.2 · 2.2.4. Synthesis of CUCs-MIL-88B-Fe/Ti3C2 |
| Ultrathin Ti3C2 nanosheetsresearch_0328__mat__ti3c2_nanosheets | Nanosheet · Composite Component · Unknown | HF-etched Ti3AlC2, DMSO intercalated under N2, water ultrasonicated under N2.few layers; no numeric thickness reported | p.2 · 2.2.3. Synthesis of Ti3C2 nanosheets |