Electrochemistry Application — Tuning Lewis acidity of MIL-88B-Fe with mix-valence coordinatively unsaturated iron centers on ultrathin Ti3C2 nanosheets for efficient photo-Fenton reaction

16 measurement groups · 48 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

EIS Nyquist

Impedance spectroscopy

CUCs-MIL-88B-Fe/Ti3C2 powder · Powder

0.2 M Na2SO4, three-electrode cell.

Measurement source: p.5-p.6 · 3.1 · Fig. 6c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Interfacial charge-transfer resistance rankingMarked as a best value within this paper	smallest semicircle radius among samples	—	—	Text Qualitative	p.5 · 3.1 · Fig. 6c

Dark Fenton degradation without visible light

CUCs-MIL-88B-Fe powder · Powder

pH 3, 10 mM H2O2, no visible light irradiation; SI Fig. S3.

Geometry: Same photo-Fenton reactor but without visible light irradiation.
Context: Activated MIL-88B-Fe CUC control.
Measurement source: p.2 · Fig. S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CUCs-MIL-88B-Fe degradation without visible light	58 %	—	—	Text Exact Reported	p.2 · Fig. S3

Dark Fenton degradation without visible light

CUCs-MIL-88B-Fe/Ti3C2 powder · Powder

pH 3, 10 mM H2O2, no visible light irradiation; SI Fig. S3.

Geometry: Same photo-Fenton reactor but without visible light irradiation.
Context: Final CUCs-MIL-88B-Fe/Ti3C2 composite.
Measurement source: p.2 · Fig. S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CUCs-MIL-88B-Fe/Ti3C2 degradation without visible light	70 %	—	—	Text Exact Reported	p.2 · Fig. S3

Mott-Schottky

Mott-Schottky analysis

CUCs-MIL-88B-Fe powder · Powder

0.2 M Na2SO4 aqueous solution; CUCs-MIL-88B-Fe electrode.

Measurement source: p.9 · 3.6 · Fig. S1a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CUCs-MIL-88B-Fe conduction band potential vs Ag/AgCl	-0.35 eV vs Ag/AgCl	—	—	Text Exact Reported	p.9 · 3.6 · Fig. S1a
CUCs-MIL-88B-Fe conduction band potential vs NHE	-0.15 eV vs NHE	—	—	Text Exact Reported	p.9 · 3.6 · Fig. S1a
CUCs-MIL-88B-Fe valence band potential vs NHE	2.28 eV vs NHE	—	—	Text Exact Reported	p.9 · 3.6 · Fig. S1a

Mott-Schottky

Mott-Schottky analysis

Ultrathin Ti3C2 nanosheets · Nanosheet

0.2 M Na2SO4 aqueous solution; 500 and 1000 Hz traces in SI Fig. S1b.

Geometry: Three-electrode electrochemical workstation; FTO working, Pt counter, calomel reference reported for electrochemical tests.
Context: Ti3C2 MXene component.
Measurement source: p.1 · Fig. S1b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ti3C2 Mott-Schottky intercept vs Ag/AgCl	-0.58 eV vs Ag/AgCl	—	—	Figure Axis Rounded Reported	p.1 · Fig. S1b

Photo-Fenton control degradation

H2O2-only control · Model

Catalyst-free H2O2 control under visible-light photo-Fenton conditions.

Measurement source: p.7 · 3.4 · Fig. 9

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Phenol degradation by H2O2-only control	11 %	—	—	Text Exact Reported	p.7 · 3.4 · Fig. 9a
SMX degradation by H2O2-only control	3 %	—	—	Text Exact Reported	p.7 · 3.4 · Fig. 9b

Photo-Fenton degradation

CUCs-MIL-88B-Fe powder · Powder

Visible light irradiation, pH 3, 10 mM H2O2; 20 mL 10 ppm phenol or 30 ppm SMX; 0.01 g catalyst.

Geometry: 50 mL cylindrical glass reactor with LSH-500 W Xe lamp and lambda > 420 nm cut-off filter.
Context: Activated MIL-88B-Fe CUC control.
Measurement source: p.7-p.8 · 3.4 · Figs. 9,10

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CUCs-MIL-88B-Fe + H2O2 degradation	more than 65 %	—	—	Text Approximate	p.7 · 3.4 · Fig. 9a,b
Phenol pseudo-first-order rate constant CUCs-MIL-88B-Fe	0.009 min-1	—	—	Figure Axis Approximate	p.8 · 3.4 · Fig. 10a
SMX pseudo-first-order rate constant CUCs-MIL-88B-Fe	0.007 min-1	—	—	Figure Axis Approximate	p.8 · 3.4 · Fig. 10b
TOC removal by CUCs-MIL-88B-Fe	around 63 %	—	—	Text Approximate	p.8 · 3.4 · Fig. 9c

Photo-Fenton degradation

CUCs-MIL-88B-Fe/Ti3C2 powder · Powder

0.01 g catalyst in 20 mL 10 ppm phenol or 30 ppm SMX; pH 3; 10 mM H2O2; visible light lambda > 420 nm; 30 min dark equilibration; 120 min irradiation.

Measurement source: p.3,p.7-p.8 · 2.4; 3.4 · Figs. 9,10

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CUCs-MIL-88B-Fe/Ti3C2 alone degradation without H2O2	40 % for both phenol and SMX	—	—	Text Rounded Reported	p.7 · 3.4 · Fig. 9a,b
CUCs-MIL-88B-Fe/Ti3C2 + H2O2 degradationMarked as a best value within this paper	more than 90 % phenol and SMX within 120 min	—	—	Text Approximate	p.7 · 3.4 · Fig. 9a,b
Phenol pseudo-first-order rate constant CUCs-MIL-88B-Fe/Ti3C2Marked as a best value within this paper	0.020 min-1	—	—	Text Exact Reported	p.7-p.8 · 3.4 · Fig. 10a
SMX pseudo-first-order rate constant CUCs-MIL-88B-Fe/Ti3C2Marked as a best value within this paper	0.035 min-1	—	—	Text Exact Reported	p.7-p.8 · 3.4 · Fig. 10b
TOC removal by CUCs-MIL-88B-Fe/Ti3C2Marked as a best value within this paper	around 71 %	—	—	Text Approximate	p.8 · 3.4 · Fig. 9c

Photo-Fenton phenol degradation loading comparison

CUCs-MIL-88B-Fe/Ti3C2 powder · Powder

Same experimental conditions; Ti3C2 amount varied as labelled in SI Fig. S4.

Geometry: Photo-Fenton reactor as in main section 2.4.
Context: CUCs-MIL-88B-Fe/0.1 g Ti3C2 composite loading comparison.
Measurement source: p.3 · Fig. S4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Phenol C/C0 after 120 min with 0.1 g Ti3C2 loadingMarked as a best value within this paper	~0.06	—	—	Visual Estimate Approximate	p.3 · Fig. S4

Photo-Fenton phenol degradation loading comparison

CUCs-MIL-88B-Fe/0.2 g Ti3C2 powder · Powder

Same experimental conditions; Ti3C2 amount varied as labelled in SI Fig. S4.

Geometry: Photo-Fenton reactor as in main section 2.4.
Context: CUCs-MIL-88B-Fe/0.2 g Ti3C2 composite loading comparison.
Measurement source: p.3 · Fig. S4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Phenol C/C0 after 120 min with 0.2 g Ti3C2 loading	~0.11	—	—	Visual Estimate Approximate	p.3 · Fig. S4

Photo-Fenton phenol degradation loading comparison

CUCs-MIL-88B-Fe/0.3 g Ti3C2 powder · Powder

Same experimental conditions; Ti3C2 amount varied as labelled in SI Fig. S4.

Geometry: Photo-Fenton reactor as in main section 2.4.
Context: CUCs-MIL-88B-Fe/0.3 g Ti3C2 composite loading comparison.
Measurement source: p.3 · Fig. S4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Phenol C/C0 after 120 min with 0.3 g Ti3C2 loading	~0.28	—	—	Visual Estimate Approximate	p.3 · Fig. S4

Photo-Fenton degradation

MIL-88B-Fe powder · Powder

Visible light irradiation, pH 3, 10 mM H2O2; 20 mL 10 ppm phenol or 30 ppm SMX; 0.01 g catalyst.

Geometry: 50 mL cylindrical glass reactor with LSH-500 W Xe lamp and lambda > 420 nm cut-off filter.
Context: Pristine MIL-88B-Fe control.
Measurement source: p.8 · 3.4 · Fig. 10

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Phenol pseudo-first-order rate constant MIL-88B-Fe	0.004 min-1	—	—	Text Exact Reported	p.7-p.8 · 3.4 · Fig. 10a
SMX pseudo-first-order rate constant MIL-88B-Fe	0.005 min-1	—	—	Text Exact Reported	p.7-p.8 · 3.4 · Fig. 10b
TOC removal by pristine MIL-88B-Fe	26 %	—	—	Text Exact Reported	p.8 · 3.4 · Fig. 9c

Photo-Fenton condition-dependence

CUCs-MIL-88B-Fe/Ti3C2 powder · Powder

Phenol/SMX degradation with varying pH (3, 5, 7) and H2O2 (5, 10, 15 mM).

Measurement source: p.8-p.9 · 3.4 · Figs. 11,12; Figs. S5,S6

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Phenol rate constant at 10 mM H2O2	0.020 min-1	—	—	Text Exact Reported	p.3 · Fig. S5
Phenol removal at 10 mM H2O2	94 %	—	—	Text Exact Reported	p.9 · 3.4 · Fig. 11b
Phenol pseudo-first-order rate constant at 15 mM H2O2	0.017 min-1	—	—	Figure Axis Rounded Reported	p.3 · Fig. S5
Phenol rate constant at 5 mM H2O2	0.009 min-1	—	—	Text Exact Reported	p.3 · Fig. S5
Phenol removal at 5 mM H2O2	78 %	—	—	Text Exact Reported	p.9 · 3.4 · Fig. 11b
Phenol rate constant at pH 3	0.020 min-1	—	—	Text Exact Reported	p.3 · Fig. S5
Phenol removal at pH 3	94 %	—	—	Text Exact Reported	p.8 · 3.4 · Fig. 11a
Phenol pseudo-first-order rate constant at pH 5	0.016 min-1	—	—	Figure Axis Rounded Reported	p.3 · Fig. S5
Phenol rate constant at pH 7	0.011 min-1	—	—	Text Exact Reported	p.3 · Fig. S5
Phenol removal at pH 7	80 %	—	—	Text Exact Reported	p.8 · 3.4 · Fig. 11a
SMX rate constant at 10 mM H2O2	0.030 min-1	—	—	Text Exact Reported	p.4 · Fig. S6
SMX removal at 10 mM H2O2	99 %	—	—	Text Exact Reported	p.9 · 3.4 · Fig. 12b
SMX pseudo-first-order rate constant at 15 mM H2O2	0.023 min-1	—	—	Figure Axis Rounded Reported	p.4 · Fig. S6
SMX rate constant at 5 mM H2O2	0.006 min-1	—	—	Text Exact Reported	p.4 · Fig. S6
SMX removal at 5 mM H2O2	67 %	—	—	Text Exact Reported	p.9 · 3.4 · Fig. 12b
SMX rate constant at pH 3	0.035 min-1	—	—	Text Exact Reported	p.4 · Fig. S6
SMX removal at pH 3	99 %	—	—	Text Exact Reported	p.8 · 3.4 · Fig. 12a
SMX pseudo-first-order rate constant at pH 5	0.008 min-1	—	—	Figure Axis Rounded Reported	p.4 · Fig. S6
SMX rate constant at pH 7	0.006 min-1	—	—	Text Exact Reported	p.4 · Fig. S6
SMX removal at pH 7	61 %	—	—	Text Exact Reported	p.8 · 3.4 · Fig. 12a

Recycling stability test

CUCs-MIL-88B-Fe/Ti3C2 powder · Powder

Ten phenol degradation cycles with recovered catalyst under same experimental conditions.

Measurement source: p.9-p.10 · 3.5 · Fig. 13a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Recycling stability through five cycles	nearly unchanged up to five consecutive cycles	—	—	Text Qualitative	p.9 · 3.5 · Fig. 13a

Radical scavenger degradation test

CUCs-MIL-88B-Fe/Ti3C2 powder · Powder

Photo-Fenton degradation with 50 mM tert-butyl alcohol as hydroxyl radical scavenger.

Measurement source: p.10 · 3.6 · Fig. 14b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Phenol/SMX removal with TBA scavenger	decreased from around 90 to 20 %	—	—	Text Approximate	p.10 · 3.6 · Fig. 14b

Transient photocurrent response

Photoresponse and photoelectrochemistry

CUCs-MIL-88B-Fe/Ti3C2 powder · Powder

0.2 M Na2SO4, three-electrode cell, UV-vis light on/off cycles.

Measurement source: p.5-p.6 · 3.1 · Fig. 6a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Transient photocurrent density relative to CUCs-MIL-88B-FeMarked as a best value within this paper	two times higher than CUCs-MIL-88B-Fe	—	—	Text Rounded Reported	p.5 · 3.1 · Fig. 6a
Transient photocurrent density relative to MIL-88B-FeMarked as a best value within this paper	four times higher than MIL-88B-Fe	—	—	Text Rounded Reported	p.5 · 3.1 · Fig. 6a