Song Y., Ren Y., Cheng H. et al. · Angewandte Chemie - International Edition · 2023 · e202306420
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.
Co-agZIF-62 glass and NiO HTL together strongly improve BiVO4 PEC water oxidation, reaching 5.34 mA cm-2 at 1.23 V vs RHE.
Caveat: Performance is for composite photoanodes, not a standalone conductive MOF device.
5 · Results and Discussion · Figure 3 · Linked to 4 structured results
The Co-agZIF-62/NiO strategy also improves WO3 and Fe2O3 photoanodes.
Caveat: WO3 and Fe2O3 numerical photocurrents were not tabulated; extracted values are figure-axis estimates.
6 · Results and Discussion · Figures S18-S25 · Linked to 3 structured results
Melt-quenching Co-ZIF-62 forms amorphous Co-agZIF-62 glass while retaining framework chemical bond connections and linker ratios.
Caveat: Exact bulk melt-quench recipe is less completely specified than supported photoanode melt-quenching.
4 · Results and Discussion · Figures 1-2 · Linked to 3 structured results
DFT indicates Co sites in Co-agZIF-62 are the main active sites for PEC water oxidation and lower the OER energy barrier.
Caveat: Mechanistic conclusion is model-dependent and based on idealised DFT slab/interface models.
10 · Results and Discussion · Figure 7 · Linked to 2 structured results
Co-agZIF-62 and NiO increase carrier density, accelerate interfacial charge transfer, suppress recombination and improve surface charge transfer efficiency.
Caveat: Mott-Schottky carrier density unit is inferred from semiconductor convention because the sentence reports values without unit.
7 · Results and Discussion · Figures 4-5 · Linked to 5 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| BiVO4 photoanode | BiVO4Bi, V oxide semiconductor | unknown · Pristinemonoclinic BiVO4 photoanode on FTO | 12 · Supporting Figures · Figure S12 |
| cobalt-based ZIF-62 glass | 10% Co-agZIF-62; (Im)1.73(bIm)0.27 with Zn/Co nodesZn2+ and Co2+ · imidazolate (Im) and benzimidazolate (bIm) | 3D · Pristineamorphous MOF glass formed by melt quenching Co-ZIF-62 | 4 · Results and Discussion · Figures 1 and S3 |
| Co-agZIF-62/BiVO4 photoanode | Co-agZIF-62/BiVO4Zn/Co ZIF glass on BiVO4 · imidazolate and benzimidazolate in Co-agZIF-62 | unknown · CompositeMOF glass catalyst coated on BiVO4 photoanode | 4 · Preparation of Co-agZIF-62/BiVO4 and Co-agZIF-62/NiO/BiVO4 array |
| Co-agZIF-62/NiO/BiVO4 photoanode | Co-agZIF-62/NiO/BiVO4Zn/Co ZIF glass, NiO and BiVO4 · imidazolate and benzimidazolate in Co-agZIF-62 | unknown · Compositeintegrated MOF glass/NiO/BiVO4 photoanode | 2 · Results and Discussion · Scheme 1 |
| Co-agZIF-62/NiO/Fe2O3 photoanode | Co-agZIF-62/NiO/Fe2O3Zn/Co ZIF glass, NiO and Fe2O3 · imidazolate and benzimidazolate in Co-agZIF-62 | unknown · Compositeintegrated MOF glass/NiO/Fe2O3 photoanode | 22 · Supporting Figures · Figures S20-S21 |
| Co-agZIF-62/NiO/WO3 photoanode | Co-agZIF-62/NiO/WO3Zn/Co ZIF glass, NiO and WO3 · imidazolate and benzimidazolate in Co-agZIF-62 | unknown · Compositeintegrated MOF glass/NiO/WO3 photoanode | 21 · Supporting Figures · Figures S18-S19 |
| cobalt-substituted ZIF-62 crystal | x% Co-ZIF-62; Zn/Co imidazolate-benzimidazolate frameworkZn2+ partially substituted by Co2+ · imidazolate (Im) and benzimidazolate (bIm) | 3D · PristineZIF-62 crystal; 10% Co-ZIF-62 selected as typical glass-forming precursor | 2 · Results and Discussion · Scheme 1; Figure 1a |
| NiO/BiVO4 photoanode | NiO/BiVO4NiO hole-transport layer on BiVO4 | unknown · Compositecomposite photoanode with NiO layer on BiVO4 | 4 · Results and Discussion · Figure 2e,f |
| Zn-agZIF-62/NiO/BiVO4 model | Zn-agZIF-62/NiO/BiVO4Zn ZIF glass, NiO and BiVO4 · imidazolate and benzimidazolate | unknown · Model SystemDFT model without Co doping | 10 · Results and Discussion · Figure 7e |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| 10% Co-agZIF-62 glassresearch_0631__mat__mat_co_agzif62 | Powder · Target Sample · Doped | melt-quenched amorphous MOF glass | 3 · Results and Discussion · Figure 1a,d,e |
| 10% Co-ZIF-62 crystal powderresearch_0631__mat__mat_co_zif62 | Powder · Pristine Control · Doped | mechanochemically synthesised crystalline precursor | 3 · Results and Discussion · Figure 1 |
| BiVO4 photoanoderesearch_0631__mat__mat_bivo4 | Electrode · Pristine Control · Pristine Framework | photoanode array prepared by previous reported methodFTO | 3 · Preparation of NiO/BiVO4 array |
| Co-agZIF-62/BiVO4 photoanoderesearch_0631__mat__mat_co_agzif62_bivo4 | Electrode · Composite Sample · Composite | Co-ZIF-62 spin-coated then melt-quenched to Co-agZIF-62 on BiVO4BiVO4/FTO | 4 · Preparation of Co-agZIF-62/BiVO4 and Co-agZIF-62/NiO/BiVO4 array |
| Co-agZIF-62/NiO/BiVO4 DFT modelresearch_0631__mat__mat_co_agzif62_nio_bivo4 | Model · Model System · Model | DFT slab/model interface | 8 · Density functional theory calculations |
| Co-agZIF-62/NiO/BiVO4 photoanoderesearch_0631__mat__mat_co_agzif62_nio_bivo4 | Electrode · Target Sample · Composite | NiO electrodeposited on BiVO4; Co-ZIF-62 spin-coated and melt-quenched to glassNiO/BiVO4/FTO | 5 · Results and Discussion · Figure 3b,c |
| Co-agZIF-62/NiO/Fe2O3 photoanoderesearch_0631__mat__mat_co_agzif62_nio_fe2o3 | Electrode · Composite Sample · Composite | same NiO/Co-agZIF-62 procedure as BiVO4-based photoanodesFe2O3 | 4 · Preparation of Fe2O3 and Co-agZIF-62/NiO/Fe2O3 photoanodes |
| Co-agZIF-62/NiO/WO3 photoanoderesearch_0631__mat__mat_co_agzif62_nio_wo3 | Electrode · Composite Sample · Composite | same NiO/Co-agZIF-62 procedure as BiVO4-based photoanodesWO3 | 4 · Preparation of WO3 and Co-agZIF-62/NiO/WO3 photoanodes |
| Co-ZIF-62/BiVO4 photoanoderesearch_0631__mat__mat_co_zif62 | Electrode · Pristine Control · Composite | crystalline Co-ZIF-62 spin-coated on BiVO4BiVO4/FTO | 4 · Preparation of Co-agZIF-62/BiVO4 and Co-agZIF-62/NiO/BiVO4 array · Figure S15 |
| Fe2O3 photoanoderesearch_0631__mat__mat_co_agzif62_nio_fe2o3 | Electrode · Pristine Control · Pristine Framework | prepared by previous reported method | 4 · Preparation of Fe2O3 and Co-agZIF-62/NiO/Fe2O3 photoanodes |
| NiO/BiVO4 DFT modelresearch_0631__mat__mat_nio_bivo4 | Model · Model System · Model | DFT slab model | 8 · Density functional theory calculations |
| NiO/BiVO4 photoanoderesearch_0631__mat__mat_nio_bivo4 | Electrode · Pristine Control · Composite | NiO electrodeposited and annealed on BiVO4FTO/BiVO4 | 3 · Preparation of NiO/BiVO4 array |
| WO3 photoanoderesearch_0631__mat__mat_co_agzif62_nio_wo3 | Electrode · Pristine Control · Pristine Framework | prepared by previous reported method | 4 · Preparation of WO3 and Co-agZIF-62/NiO/WO3 photoanodes |
| Zn-agZIF-62/NiO/BiVO4 DFT modelresearch_0631__mat__mat_zn_agzif62_model | Model · Model System · Model | DFT comparator model without Co | 10 · Results and Discussion · Figure 7e |