Synthesis · Enhancing the photo-electrocatalytic properties of g-C3N4 by boron doping and ZIF-8 hybridization

8 structured synthesis routes

Completeness describes how fully the route could be reconstructed from the main article and supporting information.

Complete recipeSource: Main

Route 1: Other

2 · 2.2 Preparation of catalysts

Solventsdeionized water; isopropanol wash

Additivesboric acid

Atmospherenot reported

Temperature80 C drying; 550 C calcination

Timeovernight drying; 1.5 h calcination

Work-upSonication 30 min; dried at 80 C overnight; calcined; cooled to room temperature; washed several times with isopropanol; collected.

Scalability contextBatch masses reported as 2.5 g boric acid and 3.0 g melamine.

Show 4 structured reagent records

Role	Reagent	Amount / concentration	Source
Additive	boric acid powders	2.5 g	2 · 2.2 Preparation of catalysts
Other	melamine powders	3.0 g	2 · 2.2 Preparation of catalysts
Solvent	deionized water	25 mL	2 · 2.2 Preparation of catalysts
Solvent	isopropanol	several washes	2 · 2.2 Preparation of catalysts

Complete recipeSource: Main

Route 2: Other

3 · 2.2 Preparation of catalysts

Metal precursorszinc acetate hexahydrate

Linker precursors2-methylimidazole

Solventsmethanol; water wash

Atmospherenot reported

Temperatureroom temperature ageing; 80 C drying

Timesame as g-C3N4/ZIF-8 route: 15 min ultrasonic dispersion; 1 h stirring; 24 h ageing; 12 h drying

Work-upSame procedure as g-C3N4/ZIF-8, using B-g-C3N4 as main catalyst.

Scalability contextScaled from the g-C3N4/ZIF-8 procedure; B-g-C3N4 mass inferred as same 100 mg because the same procedure was followed.

Show 4 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	B-g-C3N4	same procedure as g-C3N4/ZIF-8; likely 100 mg	3 · 2.2 Preparation of catalysts
Solvent	methanol	30 mL in parent procedure	3 · 2.2 Preparation of catalysts
Metal Source	zinc acetate hexahydrate	50 mg in parent procedure	3 · 2.2 Preparation of catalysts
Linker	2-methylimidazole	50 mg in parent procedure	3 · 2.2 Preparation of catalysts

Complete recipeSource: Main

Route 3: Drop Cast

3 · 2.4.2 Electrode preparation

Solventsisopropanol

Additives5 wt% Nafion

Atmospherevacuum oven drying

Temperature60

Time24 h ultrasonication; 6 h drying

Substrate orientationToray carbon paper, 1 cm2 area

Work-upInk brushed on Toray carbon paper; dried in vacuum oven at 60 C for 6 h.

Scalability contextElectrode area reported as 1 cm2.

Show 3 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	B-g-C3N4 catalyst powder	22 mg	3 · 2.4.2 Electrode preparation
Additive	Nafion	140 mL · 5 wt%	3 · 2.4.2 Electrode preparation
Solvent	isopropanol	280 mL	3 · 2.4.2 Electrode preparation

Complete recipeSource: Main

Route 4: Drop Cast

3 · 2.4.2 Electrode preparation

Solventsisopropanol

Additives5 wt% Nafion

Atmospherevacuum oven drying

Temperature60

Time24 h ultrasonication; 6 h drying

Substrate orientationToray carbon paper, 1 cm2 area

Work-upInk brushed on Toray carbon paper; dried in vacuum oven at 60 C for 6 h.

Scalability contextElectrode area reported as 1 cm2.

Show 3 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	B-g-C3N4/ZIF-8 catalyst powder	22 mg	3 · 2.4.2 Electrode preparation
Additive	Nafion	140 mL · 5 wt%	3 · 2.4.2 Electrode preparation
Solvent	isopropanol	280 mL	3 · 2.4.2 Electrode preparation

Complete recipeSource: Main

Route 5: Drop Cast

3 · 2.4.2 Electrode preparation

Solventsisopropanol

Additives5 wt% Nafion

Atmospherevacuum oven drying

Temperature60

Time24 h ultrasonication; 6 h drying

Substrate orientationToray carbon paper, 1 cm2 area

Work-upInk brushed on Toray carbon paper; dried in vacuum oven at 60 C for 6 h.

Scalability contextElectrode area reported as 1 cm2.

Show 3 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	g-C3N4 catalyst powder	22 mg	3 · 2.4.2 Electrode preparation
Additive	Nafion	140 mL · 5 wt%	3 · 2.4.2 Electrode preparation
Solvent	isopropanol	280 mL	3 · 2.4.2 Electrode preparation

Complete recipeSource: Main

Route 6: Drop Cast

3 · 2.4.2 Electrode preparation

Solventsisopropanol

Additives5 wt% Nafion

Atmospherevacuum oven drying

Temperature60

Time24 h ultrasonication; 6 h drying

Substrate orientationToray carbon paper, 1 cm2 area

Work-upInk brushed on Toray carbon paper; dried in vacuum oven at 60 C for 6 h.

Scalability contextElectrode area reported as 1 cm2.

Show 3 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	g-C3N4/ZIF-8 catalyst powder	22 mg	3 · 2.4.2 Electrode preparation
Additive	Nafion	140 mL · 5 wt%	3 · 2.4.2 Electrode preparation
Solvent	isopropanol	280 mL	3 · 2.4.2 Electrode preparation

Complete recipeSource: Main

Route 7: Other

2 · 2.2 Preparation of catalysts

Atmospherenot reported

Temperature550

Time1 h first calcination at 550 C; then 2 h second calcination at 550 C

Work-upCooled in furnace to room temperature after each calcination; collected and ground into powder.

Scalability contextBatch mass reported as 2.0 g melamine.

Show 1 structured reagent record

Role	Reagent	Amount / concentration	Source
Other	melamine	2.0 g	2 · 2.2 Preparation of catalysts

Complete recipeSource: Main

Route 8: Other

3 · 2.2 Preparation of catalysts

Metal precursorszinc acetate hexahydrate

Linker precursors2-methylimidazole

Solventsmethanol; water wash

Atmospherenot reported

Temperatureroom temperature ageing; 80 C drying

Time15 min ultrasonic dispersion; 1 h stirring; 24 h ageing; 12 h drying

Work-upCentrifuged, washed with water three times, dried at 80 C for 12 h.

Scalability context100 mg g-C3N4 support with 50 mg zinc acetate hexahydrate and 50 mg 2-methylimidazole.

Show 4 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	as-prepared g-C3N4 powder	100 mg	3 · 2.2 Preparation of catalysts
Solvent	methanol	30 mL	3 · 2.2 Preparation of catalysts
Metal Source	zinc acetate hexahydrate	50 mg	3 · 2.2 Preparation of catalysts
Linker	2-methylimidazole	50 mg	3 · 2.2 Preparation of catalysts