1 |
Solvothermal (hydrothermal) |
Solvents such as water, DMF used |
At 353–453 K for 2–3 days |
• High yield of MOF |
• High surface area and porosity of MOF |
• Highly crystalline MOF |
2 |
Non-solvothermal |
Under the boiling point of solvent |
At 298 K for several days to months |
• Carried out at room temperature or simple heating |
• Simple equipment required |
3 |
Electrochemical |
Through anodic dissolution or cathodic deposition |
At 273–303 K for 10–30 min |
• Suitable for synthesis of large quantity of MOF |
• No formation or separation of anions required |
4 |
Mechanochemical |
Chemical transformation through milling or grinding |
At 298 K for 30 min−2 h |
• No washing or activation required |
• Suitable for metal precursor with low solubility |
5 |
Microfluidics |
Reaction in microfluidic channel |
At 323–423 K for few minutes |
• Fast crystallization rate |
• Great control over morphology of MOF crystal |
6 |
Microwave-assisted |
Interaction between reactants and radiation |
At 303–373 K for 4 min−4 h |
• Good efficiency in short duration |
• Great control over reaction parameters and morphology of MOF crystals |
7 |
Ionothermal |
Ionic liquids used as solvent and template |
At 333–373 K for 6 h |
• Environmentally-friendly method |
• Great control over morphology of MOF crystals |
8 |
Sonochemical |
Ultrasonic waves used for acoustic cavitation effect |
At 272–313 K for 30–180 min |
• Fast crystallization rate |
• Suitable for small particle size |
9 |
Spray drying |
Atomization of MOF precursor solution using spray drier |
At 423–453 K for 5–10 min |
• Fast and simple technique |
• Suitable for multi-metallic MOFs |
10 |
Flow chemistry |
Continuous MOF synthesis in tube reactors |
At 353 K for 5–10 min |
• Low material and energy consumption |
• Ease in down streaming |