Primary studyCore evidenceTransport Physics

Efficient hydrogen production from MIL-53(Fe) catalyst-modified Mo: BiVO4 photoelectrodes

Zhang B., Dong G., Wang L. et al. · Catalysis Science and Technology · 2017 · 4971-4976

6materials
13samples
10synthesis routes
21measurements
46results
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

FMBV-2, the middle MIL-53(Fe) loading, is the optimum MIL-53(Fe)-modified 2% Mo:BiVO4 photoanode in the tested series.

Caveat: Some loading-series values are figure-read estimates; the optimum conclusion is directly stated by the authors.

4 · Results and discussion · Fig. S8; Fig. S9 · Linked to 4 structured results

Application RelevanceSupport assessment: Medium

FMBV-2 enables stable PEC water splitting with approximately stoichiometric H2/O2 evolution over 2 h.

Caveat: H2/O2 amounts at 120 min are visually estimated from the SI plot; the 2:1 stoichiometric ratio is text-stated.

5 · Results and discussion · Fig. S11 · Linked to 4 structured results

Composite RoleSupport assessment: High

MIL-53(Fe) serves as an efficient hole-transfer co-catalyst that improves the PEC performance of Mo-doped BiVO4 photoanodes for water oxidation.

Caveat: The paper supports this by PEC/EIS application metrics but does not directly measure intrinsic MIL-53(Fe) conductivity.

1 · Abstract · Linked to 4 structured results

Phase AssignmentSupport assessment: High

The synthesised MIL-53(Fe) is assigned to the crystalline monoclinic MIL-53(Fe) framework, while the FMBV composite retains monoclinic BiVO4 diffraction features.

Caveat: MIL-53(Fe) peaks are not visible in FMBV XRD; composite assignment additionally relies on microscopy, XPS and FTIR.

3-4 · Results and discussion · Fig. 1; Fig. 3; Fig. S4 · Linked to 3 structured results

Transport MechanismSupport assessment: Medium

The MIL-53(Fe)/2% Mo:BiVO4 junction facilitates hole transfer to the electrolyte and suppresses electron-hole recombination.

Caveat: Mechanistic assignment is inferred from PEC, EIS and schematic band/charge-transport arguments rather than direct transient spectroscopy or conductivity data.

5 · Results and discussion · Scheme 2 · Linked to 3 structured results

Transport MechanismSupport assessment: Medium

Mo doping improves BiVO4 PEC efficiency by increasing charge-carrier concentration without changing the indirect band-gap nature.

Caveat: The specific statement about indirect band gap and Mott-Schottky confirmation is attributed to prior studies cited by the paper, not newly measured here.

5 · Results and discussion · Scheme 2 · Linked to 2 structured results

Material identities

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

MaterialCompositionStructure contextSource
Nanoporous BiVO4 photoanodeBiVO4Bi and V oxide semiconductor lattice3D · PristineMonoclinic bismuth vanadate, JCPDS No. 14-0688.4 · Results and discussion · Fig. 3A
BiVO4-MIL-53(Fe) composite photoanodeMIL-53(Fe) on BiVO4Fe(III) MIL-53 chains plus Bi/V oxide semiconductor · Terephthalate in MIL-53(Fe)3D · CompositeMIL-53(Fe)-modified BiVO4 composite films used as non-Mo-doped application controls.6 · Supplemental Figures · Fig. S8
2% Mo:BiVO4-MIL-53(Fe) composite photoanode (FMBV)MIL-53(Fe) on 2% Mo:BiVO4Fe(III) MIL-53 chains plus Bi/V/Mo oxide semiconductor · Terephthalate in MIL-53(Fe)3D · CompositeComposite of MIL-53(Fe) hexagonal bipyramids deposited on nanoporous 2% Mo:BiVO4; BiVO4 phase remains monoclinic.3 · Results and discussion · Scheme 1; Fig. 2
MIL-53(Fe)Fe(OH){O2C-C6H4-CO2}Fe(III) octahedral chains sharing OH groups · Terephthalate / benzene-1,4-dicarboxylate3D · PristineMIL-53(Fe) framework; monoclinic symmetry by XRD; 3D framework with a one-dimensional pore channel system.1, 3 · Introduction; Results and discussion · Fig. 1
2% Mo:BiVO4 photoanodeMo-doped BiVO4; Bi:V:Mo = 0.98:1:0.02Bi, V and Mo oxide semiconductor lattice3D · PristineMo-doped monoclinic bismuth vanadate photoanode.2 · Preparation of nanoporous BiVO4 and 2% Mo:BiVO4 photoanodes
2% Mo:BiVO4/FeOOH composite photoanodeFeOOH on 2% Mo:BiVO4Fe oxyhydroxide on Bi/V/Mo oxide semiconductorunknown · CompositeFeOOH co-catalyst-modified 2% Mo:BiVO4 control.2 · Preparation of 2%Mo:BiVO4-FeOOH composite materials

Sample register

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

Show 13 sample records
SampleForm and roleProcessing and geometrySource
nanoporous BiVO4 photoanoderesearch_0461__mat__mat_bivo4Electrode · Pristine Control · UnknownDrop-cast precursor on FTO; dried at 150 deg C for 60 min; annealed in air at 500 deg C for 2.5 h.FTO glass, 1 x 5 cm22 · Preparation of nanoporous BiVO4 and 2% Mo:BiVO4 photoanodes
BVO/MIL-53(Fe)-1research_0461__mat__mat_bvo_mil53Electrode · Composite Sample · CompositeMIL-53(Fe)-modified BiVO4 film; exact loading inferred as the lower-loading comparison series but not explicitly assigned in text.FTO glass6 · Supplemental Figures · Fig. S8
BVO/MIL-53(Fe)-2research_0461__mat__mat_bvo_mil53Electrode · Composite Sample · CompositeMIL-53(Fe)-modified BiVO4 film; exact loading inferred as the middle-loading comparison series but not explicitly assigned in text.FTO glass6 · Supplemental Figures · Fig. S8
BVO/MIL-53(Fe)-3research_0461__mat__mat_bvo_mil53Electrode · Composite Sample · CompositeMIL-53(Fe)-modified BiVO4 film; exact loading inferred as the higher-loading comparison series but not explicitly assigned in text.FTO glass6 · Supplemental Figures · Fig. S8
FMBV-1research_0461__mat__mat_fmbvElectrode · Composite Sample · CompositeMIL-53(Fe) spin-coated onto 2% Mo:BiVO4 using 350 uL coating amount, then dried at 150 deg C for 1 h.FTO glass3 · Results and discussion · Scheme 1
FMBV-2 / 2% Mo:BiVO4-MIL-53(Fe)research_0461__mat__mat_fmbvElectrode · Target Sample · CompositeMIL-53(Fe) spin-coated onto 2% Mo:BiVO4 using 450 uL coating amount, then dried at 150 deg C for 1 h.FTO glass3-5 · Results and discussion · Fig. 2; Fig. 4; Fig. S9
FMBV-3research_0461__mat__mat_fmbvElectrode · Composite Sample · CompositeMIL-53(Fe) spin-coated onto 2% Mo:BiVO4 using 550 uL coating amount, then dried at 150 deg C for 1 h.FTO glass3 · Results and discussion · Scheme 1
pure MIL-53(Fe) photoanoderesearch_0461__mat__mat_mil53_feElectrode · Pristine Control · Pristine FrameworkPure MIL-53(Fe) electrode used for current-potential measurement.not specified5 · Supplemental Figures · Fig. S6
as-prepared MIL-53(Fe) powderresearch_0461__mat__mat_mil53_fePowder · Composite Component · Pristine FrameworkMicrowave-synthesised powder, centrifuged, washed and vacuum-dried.2 · Preparation of MIL-53(Fe)
2% Mo:BiVO4 photoanoderesearch_0461__mat__mat_mo_bivo4Electrode · Pristine Control · DopedPrepared by the BiVO4 drop-cast/anneal route with ammonium molybdate added at Bi:V:Mo = 0.98:1:0.02.FTO glass, 1 x 5 cm22 · Preparation of nanoporous BiVO4 and 2% Mo:BiVO4 photoanodes
2% Mo:BiVO4/FeOOH-1research_0461__mat__mat_mo_bivo4_feoohElectrode · Composite Sample · CompositeFeOOH photoelectron-deposited on 2% Mo:BiVO4 for 10 min.FTO glass2 · Preparation of 2%Mo:BiVO4-FeOOH composite materials
2% Mo:BiVO4/FeOOH-2research_0461__mat__mat_mo_bivo4_feoohElectrode · Composite Sample · CompositeFeOOH photoelectron-deposited on 2% Mo:BiVO4 for 20 min.FTO glass4-5 · Results and discussion · Fig. 4; Fig. S10
2% Mo:BiVO4/FeOOH-3research_0461__mat__mat_mo_bivo4_feoohElectrode · Composite Sample · CompositeFeOOH photoelectron-deposited on 2% Mo:BiVO4 for 30 min.FTO glass2 · Preparation of 2%Mo:BiVO4-FeOOH composite materials