Primary studyCore evidenceTheory Transport

Photocatalytic Hydrogen Peroxide Production through Functionalized Semiconductive Metal-Organic Frameworks

Choi J.Y., Check B., Fang X. et al. · Journal of the American Chemical Society · 2024

4materials
13samples
8synthesis routes
22measurements
79results
9claims 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

EFB-MOF is the best photocatalyst in this MOF series for visible-light H2O2 production in O2-saturated water.

Caveat: Performance comparison to external catalysts depends on differing literature conditions; only within-paper MOF series comparison is direct.

main p.1, article p.11319 · Abstract · Figure 4a · Linked to 4 structured results

Application RelevanceSupport assessment: Medium

EFB-MOF is recyclable and structurally stable under the reported photocatalysis cycling conditions.

Caveat: Activity is reported to become slightly sluggish over five cycles; long-term durability beyond five cycles is not shown.

main p.6, article p.11324 · Photocatalytic H2O2 Production and Mechanistic Insights · Figure S23 · Linked to 1 structured result

CaveatSupport assessment: High

The Cu3(C6O6)2 optical control is included as a conductive-MOF material, but its synthesis recipe is not first-hand in the supplied article or SI.

Caveat: The article cites a reported method rather than reproducing the recipe; no external reference was fetched.

main p.3, article p.11321 · Characterizations of Optical and Electronic Properties · Figure 3a

Phase AssignmentSupport assessment: High

DPT-MOF is a newly reported semiconductive MOF produced by pillaring the conductive Cu3(C6O6)2 framework with DPT.

Caveat: No single-crystal structure is reported; phase assignment relies on PXRD/Pawley matching and supporting characterisation.

main p.2, article p.11320 · Introduction · Figure 1 · Linked to 5 structured results

Structure Property LinkSupport assessment: High

PA and EFB click functionalisation increases the optical band gap and shifts band positions relative to DPT-MOF.

Caveat: Conduction-band energies are calculated from reported UPS EVB and optical band gaps; figure labels are not tabulated.

main p.3, article p.11321 · Characterizations of Optical and Electronic Properties · Figure 3 · Linked to 9 structured results

Synthesis MechanismSupport assessment: High

Postsynthetic click-type reactions with PA and EFB successfully functionalise the DPT-MOF tetrazine units while retaining framework crystallinity.

Caveat: Functionalisation extent is inferred from spectroscopy and digestion ratios; exact empirical formulas are not reported.

main p.2, article p.11320 · Synthesis and Characterization · Figure 1a and Figures S6-S10 · Linked to 7 structured results

Transport MechanismSupport assessment: High

The fluorine-containing EFB functionality promotes charge separation by trapping electrons, giving longer PL lifetime, lower exciton binding energy, higher photocurrent, and improved H2O2 production.

Caveat: Photocurrent values are figure estimates and EIS is qualitative; mechanistic charge localisation is computational support.

main p.5, article p.11323 · Photocatalytic H2O2 Production and Mechanistic Insights · Figures 4 and 5 · Linked to 6 structured results

Transport MechanismSupport assessment: Medium

Time-dependent FTIR supports both OH and superoxide intermediates, and the authors infer an indirect two-electron ORR pathway for H2O2 formation.

Caveat: Intermediates are assigned from FTIR bands and scavenger controls; kinetic pathway is inferred rather than directly measured by isotope or operando quantitative spectroscopy.

main p.6, article p.11324 · Photocatalytic H2O2 Production and Mechanistic Insights · Figure 4f and Figure S21 · Linked to 3 structured results

Transport MechanismSupport assessment: High

All three MOFs show semiconductive transport behaviour because their pressed-pellet conductivity increases with temperature and Arrhenius activation energies are positive.

Caveat: Conductivity is low and measured on pressed pellets; no single-crystal or thin-film anisotropic transport is reported.

main p.5, article p.11323 · Characterizations of Optical and Electronic Properties · Figure 3d · Linked to 7 structured results

Material identities

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

MaterialCompositionStructure contextSource
Cu3(C6O6)2 controlBrowse family: Cu₃(C₆O₆)₂ (Cu–THQ / Cu–HHB)Cu3(C6O6)2Copper nodes in a 2D electrically conductive framework. · C6O6 layer linker derived from tetrahydroxybenzoquinone/hexahydroxybenzene chemistry.2D · PristinePreviously reported 2D electrically conductive MOF used as an optical control.main p.3, article p.11321 · Characterizations of Optical and Electronic Properties · Figure 3a
DPT-MOFDPT-pillared Cu3(C6O6)2 framework; exact empirical formula not explicitly reportedCopper nodes in Cu3(C6O6)2 layers; Cu2+ and Cu+/0 components observed before click reaction. · Tetrahydroxy-1,4-benzoquinone-derived hexahydroxybenzene/HHB layer linker and 3,6-di(4-pyridyl)-1,2,4,5-tetrazine (DPT) pillar.3D · PristineDPT pillar introduced into the 2D electrically conductive Cu3(C6O6)2 framework, forming a pillared semiconductive MOF with interlayer and hexagonal pores.main p.2, article p.11320 · Introduction; Synthesis and Characterization · Figure 1a
EFB-MOF1-ethynyl-4-fluorobenzene-clicked DPT-MOF; exact empirical formula not explicitly reportedCopper nodes in the DPT-MOF-derived framework. · HHB layer linker, DPT-derived pillar after click reaction with 1-ethynyl-4-fluorobenzene (EFB).3D · PristineFluorophenyl-functionalised DPT-MOF retaining the simulated framework structure and showing 14.4 Angstrom interlayer and 6.6 Angstrom pore distances by HRTEM.main p.3, article p.11321 · Synthesis and Characterization · Figure 2
PA-MOFPhenylacetylene-clicked DPT-MOF; exact empirical formula not explicitly reportedCopper nodes in the DPT-MOF-derived framework. · HHB layer linker, DPT-derived pillar after click reaction with phenylacetylene (PA).3D · PristinePA-clicked DPT-MOF retaining the simulated framework structure with phenyl groups residing toward the honeycomb pore.main p.2, article p.11320 · Synthesis and Characterization · Figure 1a

Sample register

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

Show 13 sample records
SampleForm and roleProcessing and geometrySource
Cu3(C6O6)2 control powderresearch_0604__mat__cu3_c6o6_2_controlPowder · Pristine Control · Pristine FrameworkControl material synthesised by a previously reported method; first-hand recipe not given.main p.3, article p.11321 · Characterizations of Optical and Electronic Properties · Figure 3a
DPT-MOF/PTFE working electroderesearch_0604__mat__dpt_mofElectrode · Pristine Control · CompositeInk of 80 wt% MOF powder and 20 wt% PTFE binder dispersed in ethanol, drop-cast and dried at 65 C for 30 min.ITO glass for photocurrent; Pt disc for OCVD; three-electrode cell used for electrochemical measurements.SI p.S3 · Photoelectrochemical and Electrochemical Measurements
DPT-MOF computational modelresearch_0604__mat__dpt_mofModel · Model System · ModelDFT/TD-DFT model system.SI p.S3 · Theoretical Calculations · Figure S24
DPT-MOF pressed pelletresearch_0604__mat__dpt_mofPellet · Pristine Control · Pristine FrameworkApproximately 5 mg material pressed under 1.5 tons for four-point probe conductivity.5 mm diameter circular die; thickness not reportedSI p.S2 · Materials and Instrumentations
DPT-MOF powderresearch_0604__mat__dpt_mofPowder · Pristine Control · Pristine FrameworkIsolated powder after one-pot hydrothermal synthesis, washing, and vacuum drying.main p.7, article p.11325 · Experimental Section
EFB-MOF/PTFE working electroderesearch_0604__mat__efb_mofElectrode · Target Sample · CompositeInk of 80 wt% MOF powder and 20 wt% PTFE binder dispersed in ethanol, drop-cast and dried at 65 C for 30 min.ITO glass for photocurrent; Pt disc for OCVD; three-electrode cell used for electrochemical measurements.SI p.S3 · Photoelectrochemical and Electrochemical Measurements
EFB-MOF computational modelresearch_0604__mat__efb_mofModel · Model System · ModelDFT/TD-DFT model system.main p.6, article p.11324 · Photocatalytic H2O2 Production and Mechanistic Insights · Figure 5a
EFB-MOF pressed pelletresearch_0604__mat__efb_mofPellet · Target Sample · Pristine FrameworkApproximately 5 mg material pressed under 1.5 tons for four-point probe conductivity.5 mm diameter circular die; thickness not reportedSI p.S2 · Materials and Instrumentations
EFB-MOF powderresearch_0604__mat__efb_mofPowder · Target Sample · Pristine FrameworkPostsynthetically clicked DPT-MOF with 1-ethynyl-4-fluorobenzene, washed and vacuum dried.main p.7, article p.11325 · Experimental Section
PA-MOF/PTFE working electroderesearch_0604__mat__pa_mofElectrode · Target Sample · CompositeInk of 80 wt% MOF powder and 20 wt% PTFE binder dispersed in ethanol, drop-cast and dried at 65 C for 30 min.ITO glass for photocurrent; Pt disc for OCVD; three-electrode cell used for electrochemical measurements.SI p.S3 · Photoelectrochemical and Electrochemical Measurements
PA-MOF computational modelresearch_0604__mat__pa_mofModel · Model System · ModelDFT/TD-DFT model system.SI p.S19 · Computational simulation of electron and hole distribution · Figure S24
PA-MOF pressed pelletresearch_0604__mat__pa_mofPellet · Target Sample · Pristine FrameworkApproximately 5 mg material pressed under 1.5 tons for four-point probe conductivity.5 mm diameter circular die; thickness not reportedSI p.S2 · Materials and Instrumentations
PA-MOF powderresearch_0604__mat__pa_mofPowder · Target Sample · Pristine FrameworkPostsynthetically clicked DPT-MOF with phenylacetylene, washed and vacuum dried.main p.7, article p.11325 · Experimental Section