Synthesis · Encapsulating metal organic framework into hollow mesoporous carbon sphere as efficient oxygen bifunctional electrocatalyst

9 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

617 · Preparation of Co-HMCS

Metal precursorsCo(NO3)2 methanol solution

Linker precursorsnone

Solventsmethanol

AdditivesHMCS

Temperature5 C bath

Time30 min ultrasonic dispersion; overnight shaking; 24 h at 5 C

Work-upCentrifuged and washed several times until supernatant was colourless

Show 3 structured reagent records

Role	Reagent	Amount / concentration	Source
Additive	HMCS	10 mg	617 · Preparation of Co-HMCS
Metal Source	Co(NO3)2 methanol solution	4 mL · 10 mg mL^-1	617 · Preparation of Co-HMCS
Solvent	methanol	Not specified	617 · Preparation of Co-HMCS

Complete recipeSource: Main

Route 2: Other

616 · Preparation of the HMCS

Solvents140 mL ethanol; 20 mL H2O; 320 mL aqueous dopamine solution

Additives6 mL NH4OH; TEOS silica precursor; dopamine carbon source; NaOH etchant

Atmospherenitrogen during calcination

Temperature800 C calcination; 70 C etch

Time0.5 h TEOS reaction; 12 h dopamine reaction; 5 h calcination; 24 h etch

Work-upCentrifuged, washed several times with water and ethanol, dried; etched with 1 M NaOH

ActivationCalcined at 800 C for 5 h under nitrogen

Show 6 structured reagent records

Role	Reagent	Amount / concentration	Source
Base	NH4OH	6 mL · 25-28 wt%	616 · Preparation of the HMCS
Solvent	ethanol	140 mL	616 · Preparation of the HMCS
Solvent	H2O	20 mL	616 · Preparation of the HMCS
Other	TEOS	5.6 mL · 99%	616 · Preparation of the HMCS
Other	dopamine aqueous solution	320 mL · 2.5 mg mL^-1	616 · Preparation of the HMCS
Base	NaOH	1 M	616 · Preparation of the HMCS

Complete recipeSource: Main

Route 3: Other

616 · Preparation of the HMCS

SolventsAs HMCS route

AdditivesDopamine concentration increased to 5.0 mg mL^-1

Atmospherenitrogen during calcination

Temperature800 C calcination; 70 C etch

TimeAs HMCS route

Work-upAs HMCS route

ActivationCalcined at 800 C for 5 h under nitrogen

Show 1 structured reagent record

Role	Reagent	Amount / concentration	Source
Other	dopamine aqueous solution	320 mL · 5.0 mg mL^-1	616 · Preparation of the HMCS

Complete recipeSource: Main

Route 4: Drop Cast

617 · Electrochemical experiments

Solvents1 mL isopropanol

Additives40 uL Nafion solution (5 wt%)

Temperatureroom temperature drying

Time30 min ultrasonic treatment

Substrate orientationglassy carbon disk, 0.197 cm2

Work-up20 uL ink drop-cast and dried at room temperature

ActivationCV conditioning before ORR/OER tests

Show 3 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	as-prepared catalyst	2.5 mg	617 · Electrochemical experiments
Solvent	isopropanol	1 mL	617 · Electrochemical experiments
Additive	Nafion solution	40 uL · 5 wt%	617 · Electrochemical experiments

Partial recipeSource: Main

Route 5: Other

617 · Preparation of ZIF-67@HMCS

Metal precursorsCo(NO3)2 methanol solution

Linker precursors2-MI methanol solution

Solventsmethanol

Temperature5 C bath

TimeSimilar to ZIF@HMCS route

Work-upCentrifuged and washed

Show 2 structured reagent records

Role	Reagent	Amount / concentration	Source
Metal Source	Co(NO3)2 methanol solution	10 mg mL^-1	617 · Preparation of ZIF-67@HMCS
Linker	2-MI methanol solution	13.12 mg mL^-1	617 · Preparation of ZIF-67@HMCS

Complete recipeSource: Main

Route 6: Other

616-617 · Preparation of ZIF-67@HMCS

Metal precursorsCo(NO3)2 methanol solution

Linker precursors2-MI methanol solution

Solventsmethanol

AdditivesHMCS

Temperature5 C bath

Time2 h ultrasonic treatment; overnight shaking; 24 h at 5 C

Work-upCentrifuged and washed

Show 3 structured reagent records

Role	Reagent	Amount / concentration	Source
Additive	HMCS	10 mg	616-617 · Preparation of ZIF-67@HMCS
Metal Source	Co(NO3)2 methanol solution	4 mL · 10 mg mL^-1	616-617 · Preparation of ZIF-67@HMCS
Linker	2-MI methanol solution	4 mL · 13.12 mg mL^-1	616-617 · Preparation of ZIF-67@HMCS

Complete recipeSource: Main

Route 7: Other

616 · Preparation of ZIF-67@HMCS

Metal precursorsCo(NO3)2 methanol solution

Linker precursors2-MI methanol solution

Solventsmethanol

AdditivesHMCS-1

Temperature5 C bath

TimeAs ZIF@HMCS route

Work-upCentrifuged and washed

Show 3 structured reagent records

Role	Reagent	Amount / concentration	Source
Additive	HMCS-1	10 mg	616 · Preparation of ZIF-67@HMCS
Metal Source	Co(NO3)2 methanol solution	4 mL · 10 mg mL^-1	616 · Preparation of ZIF-67@HMCS
Linker	2-MI methanol solution	4 mL · 13.12 mg mL^-1	616 · Preparation of ZIF-67@HMCS

Vague recipeSource: Main

Route 8: Other

617 · Preparation of ZIF-67@HMCS

Metal precursorspreformed ZIF-67

Additivespreformed HMCS

Show 2 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	ZIF-67	Not specified	617 · Preparation of ZIF-67@HMCS
Additive	HMCS	Not specified	617 · Preparation of ZIF-67@HMCS

Complete recipeSource: Main

Route 9: Other

616 · Preparation of ZIF-67@HMCS

Metal precursorsCo(NO3)2 methanol solution

Linker precursors2-MI methanol solution

Solventsmethanol

AdditivesHMCS

Temperature5 C bath

Time30 min ultrasonic dispersion; overnight shaking; 24 h at 5 C

Work-upCentrifuged and washed several times until supernatant was colourless

Scalability contextPrepared at 10%, 25% and 50% HMCS:Co(NO3)2.6H2O weight ratios by changing solution volumes.

Show 4 structured reagent records

Role	Reagent	Amount / concentration	Source
Additive	HMCS	10 mg	616 · Preparation of ZIF-67@HMCS
Metal Source	Co(NO3)2 methanol solution	10 mL, 4 mL or 2 mL · 10 mg mL^-1	616 · Preparation of ZIF-67@HMCS
Linker	2-MI methanol solution	10 mL, 4 mL or 2 mL · 13.12 mg mL^-1	616 · Preparation of ZIF-67@HMCS
Solvent	methanol	Not specified	616 · Preparation of ZIF-67@HMCS