Electrochemistry Application — Embedding Pt in Ni-MOF/CdS organic-inorganic hybrid materials as electron channel to promote photogenerated carrier separation for enhanced photocatalytic hydrogen evolution under visible light

13 measurement groups · 34 results

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

Cycling photocatalytic H2 evolution stability

0.3 NPC · Powder

Repeated photocatalytic hydrogen production tests on 0.3 NPC under visible light.

Atmosphere: argon-purged reactor
Geometry: sealed photocatalytic reactor
Context: target composite stability
Measurement source: 6 · 3.4 · Fig. 7b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
0.3 NPC H2 production rate cycle 1	14.1 mmol h-1 g-1	14.1 mmol h-1 g-1	—	Figure Axis Rounded Reported	6 · 3.4 · Fig. 7b
0.3 NPC H2 production rate cycle 2	13.82 mmol h-1 g-1	13.82 mmol h-1 g-1	—	Figure Axis Rounded Reported	6 · 3.4 · Fig. 7b
0.3 NPC H2 production rate cycle 3	13.57 mmol h-1 g-1	13.57 mmol h-1 g-1	—	Figure Axis Rounded Reported	6 · 3.4 · Fig. 7b
0.3 NPC H2 production rate cycle 4	13.32 mmol h-1 g-1	13.32 mmol h-1 g-1	—	Figure Axis Rounded Reported	6 · 3.4 · Fig. 7b
0.3 NPC H2 production rate cycle 5	13.06 mmol h-1 g-1	13.06 mmol h-1 g-1	—	Text Exact Reported	6 · 3.4 · Fig. 7b
0.3 NPC H2 production retention after five cyclesMarked as a best value within this paper	92.6%	0.926 fraction	—	Text Exact Reported	1, 6-7 · Abstract; 3.4; 4 · Fig. 7b

Electrochemical impedance spectroscopy, CHI 600D

Impedance spectroscopy

0.3 NPC · Powder

EIS tested without light; FTO working electrode; Pt counter, Ag/AgCl reference; 0.1 M sodium sulfate.

Geometry: FTO working electrode, 1 x 1 cm2 coated area
Context: target composite compared with Ni-MOF, PC and NPC series
Measurement source: 2, 6 · 2.5; 3.3 · Fig. 6c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
0.3 NPC charge transfer resistanceMarked as a best value within this paper	smallest charge transfer resistance among compared samples	—	—	Qualitative Qualitative	5-6 · 3.3 · Fig. 6c

Mott-Schottky test at 500, 1000 and 1500 kHz

Mott-Schottky analysis

CdS · Powder

Samples coated on FTO, 1 x 1 cm2; Pt counter electrode; Ag/AgCl reference; 0.1 M sodium sulfate electrolyte.

Geometry: FTO working electrode, 1 x 1 cm2 coated area
Context: pristine CdS control
Measurement source: 2, 5 · 2.5; 3.2 · Fig. 5a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CdS conduction band potential	-0.49 eV	-0.49 eV	—	Text Exact Reported	5 · 3.2 · Fig. 5a
CdS flat-band potential vs Ag/AgCl	-0.77 V vs Ag/AgCl	-0.77 V vs Ag/AgCl	—	Text Exact Reported	5 · 3.2 · Fig. 5a
CdS valence band potential	1.93 eV	1.93 eV	—	Text Exact Reported	5 · 3.2 · Fig. 5a
CdS semiconductor type	positive slope, n-type semiconductor	—	—	Text Qualitative	5 · 3.2 · Fig. 5a

Mott-Schottky test at 500, 1000 and 1500 kHz

Mott-Schottky analysis

Ni-MOF · Powder

Samples coated on FTO, 1 x 1 cm2; Pt counter electrode; Ag/AgCl reference; 0.1 M sodium sulfate electrolyte.

Geometry: FTO working electrode, 1 x 1 cm2 coated area
Context: pristine MOF control
Measurement source: 2, 5 · 2.5; 3.2 · Fig. 5b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-MOF conduction band potential	-0.29 eV	-0.29 eV	—	Text Exact Reported	5 · 3.2 · Fig. 5b
Ni-MOF flat-band potential vs Ag/AgCl	-0.57 V vs Ag/AgCl	-0.57 V vs Ag/AgCl	—	Text Exact Reported	5 · 3.2 · Fig. 5b
Ni-MOF valence band potential	2.57 eV	2.57 eV	—	Text Exact Reported	5 · 3.2 · Fig. 5b
Ni-MOF semiconductor type	positive slope, n-type semiconductor	—	—	Text Qualitative	5 · 3.2 · Fig. 5b

Visible-light photocatalytic H2 evolution by gas chromatography

0.1 NPC · Powder

Same photocatalytic conditions as CdS: Ar purge, 300 W Xe lamp, lambda >= 420 nm, 2 h irradiation.

Atmosphere: argon-purged reactor
Geometry: sealed photocatalytic reactor
Context: NPC series composite
Measurement source: 6 · 3.4 · Fig. 7a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
0.1Ni-MOF/1permille Pt/CdS (0.1NPC) apparent quantum yield	3.87%	0.0387 fraction	—	SI Table Exact Reported	3 · Supplementary data · Table S2
0.1 NPC H2 production rate	7.71 mmol h-1 g-1	7.71 mmol h-1 g-1	—	SI Table Exact Reported	3 · Supplementary data · Table S2

Visible-light photocatalytic H2 evolution by gas chromatography

0.2 NPC · Powder

Same photocatalytic conditions as CdS: Ar purge, 300 W Xe lamp, lambda >= 420 nm, 2 h irradiation.

Atmosphere: argon-purged reactor
Geometry: sealed photocatalytic reactor
Context: NPC series composite
Measurement source: 6 · 3.4 · Fig. 7a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
0.2Ni-MOF/1permille Pt/CdS (0.2NPC) apparent quantum yield	5.79%	0.0579 fraction	—	SI Table Exact Reported	3 · Supplementary data · Table S2
0.2 NPC H2 production rate	11.53 mmol h-1 g-1	11.53 mmol h-1 g-1	—	SI Table Exact Reported	3 · Supplementary data · Table S2

Visible-light photocatalytic H2 evolution by gas chromatography

0.3 NC · Powder

Same photocatalytic conditions as CdS: Ar purge, 300 W Xe lamp, lambda >= 420 nm, 2 h irradiation.

Atmosphere: argon-purged reactor
Geometry: sealed photocatalytic reactor
Context: Ni-MOF/CdS no-Pt control
Measurement source: 6 · 3.4 · Fig. 7a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
0.3Ni-MOF/CdS (0.3NC) apparent quantum yield	3.97%	0.0397 fraction	—	SI Table Exact Reported	3 · Supplementary data · Table S2
0.3 NC H2 production rate	7.91 mmol h-1 g-1	7.91 mmol h-1 g-1	—	Text Exact Reported	6 · 3.4 · Fig. 7a

Visible-light photocatalytic H2 evolution by gas chromatography

0.3 NPC · Powder

Same photocatalytic conditions as CdS: Ar purge, 300 W Xe lamp, lambda >= 420 nm, 2 h irradiation.

Atmosphere: argon-purged reactor
Geometry: sealed photocatalytic reactor
Context: target composite
Measurement source: 6 · 3.4 · Fig. 7a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
0.3Ni-MOF/1permille Pt/CdS (0.3NPC) apparent quantum yieldMarked as a best value within this paper	7.08%	0.0708 fraction	—	SI Table Exact Reported	3 · Supplementary data · Table S2
0.3 NPC enhancement over pure CdSMarked as a best value within this paper	about 61.3 times higher than pure CdS	61.3 fold	—	Text Rounded Reported	1, 6 · Abstract; 3.4 · Fig. 7a
0.3 NPC H2 production rateMarked as a best value within this paper	14.1 mmol h-1 g-1	14.1 mmol h-1 g-1	—	Text Exact Reported	1, 6 · Abstract; 3.4 · Fig. 7a
This work rate in SI literature comparisonMarked as a best value within this paper	Ni-MOF/Pt/CdS, 300 W Xe-lamp (lambda >= 420 nm), triethanolamine: 14.1 mmol h-1 g-1	14.1 mmol h-1 g-1	—	SI Table Exact Reported	2-3 · Supplementary data · Table S1

Visible-light photocatalytic H2 evolution by gas chromatography

0.3 PNC · Powder

Same photocatalytic conditions as CdS: Ar purge, 300 W Xe lamp, lambda >= 420 nm, 2 h irradiation.

Atmosphere: argon-purged reactor
Geometry: sealed photocatalytic reactor
Context: Pt/Ni-MOF/CdS control
Measurement source: 6 · 3.4 · Fig. 7a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
1permille Pt/0.3Ni-MOF/CdS (0.3PNC) apparent quantum yield	4.92%	0.0492 fraction	—	SI Table Exact Reported	3 · Supplementary data · Table S2
0.3 PNC H2 production rate	9.79 mmol h-1 g-1	9.79 mmol h-1 g-1	—	Text Exact Reported	6 · 3.4 · Fig. 7a

Visible-light photocatalytic H2 evolution by gas chromatography

0.4 NPC · Powder

Same photocatalytic conditions as CdS: Ar purge, 300 W Xe lamp, lambda >= 420 nm, 2 h irradiation.

Atmosphere: argon-purged reactor
Geometry: sealed photocatalytic reactor
Context: NPC series composite
Measurement source: 6 · 3.4 · Fig. 7a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
0.4Ni-MOF/1permille Pt/CdS (0.4NPC) apparent quantum yield	5.67%	0.0567 fraction	—	SI Table Exact Reported	3 · Supplementary data · Table S2
0.4 NPC H2 production rate	11.29 mmol h-1 g-1	11.29 mmol h-1 g-1	—	SI Table Exact Reported	3 · Supplementary data · Table S2

Visible-light photocatalytic H2 evolution by gas chromatography

CdS · Powder

10 mg catalyst in 2 mL triethanolamine and 8 mL DI water; Ar purge 30 min; 300 W Xe lamp with UV cut-off filter lambda >= 420 nm; 2 h irradiation; GC9790II TCD.

Atmosphere: argon-purged reactor
Geometry: sealed photocatalytic reactor
Context: pristine CdS control
Measurement source: 3, 6 · 2.6; 3.4 · Fig. 7a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CdS apparent quantum yield	0.12%	0.0012 fraction	—	SI Table Exact Reported	3 · Supplementary data · Table S2
CdS H2 production rate	0.23 mmol h-1 g-1	0.23 mmol h-1 g-1	—	Text Exact Reported	6 · 3.4 · Fig. 7a

Visible-light photocatalytic H2 evolution by gas chromatography

PC · Powder

Same photocatalytic conditions as CdS: Ar purge, 300 W Xe lamp, lambda >= 420 nm, 2 h irradiation.

Atmosphere: argon-purged reactor
Geometry: sealed photocatalytic reactor
Context: Pt/CdS control
Measurement source: 6 · 3.4 · Fig. 7a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
1permille Pt/CdS (PC) apparent quantum yield	0.59%	0.0059 fraction	—	SI Table Exact Reported	3 · Supplementary data · Table S2
PC H2 production rate	1.18 mmol h-1 g-1	1.18 mmol h-1 g-1	—	Text Exact Reported	6 · 3.4 · Fig. 7a

Transient photocurrent test, CHI 600D, 300 W xenon lamp

Photoresponse and photoelectrochemistry

0.3 NPC · Powder

FTO working electrode, 1 x 1 cm2; Pt counter, Ag/AgCl reference; 0.1 M sodium sulfate; light on/off transient test.

Geometry: FTO working electrode, 1 x 1 cm2 coated area
Context: target composite compared with PC and NPC series
Measurement source: 2, 6 · 2.5; 3.3 · Fig. 6b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
0.3 NPC transient photocurrentMarked as a best value within this paper	strongest photocurrent density among compared samples	—	—	Qualitative Qualitative	5-6 · 3.3 · Fig. 6b