MOF QUIZ

Which synthetic method can be used for synthesizing MOFs in the absence of a solvent?

• Electrochemical

• Ultrasonication

• Solvothermal

• Mechanochemical

What type of isotherm is usually obtained after the BET measurement of MOFs and what does it tell us about the pore properties?

• Type I, the material is mostly mesoporous

• Type I, the material is mostly microporous

• Type IV, the material is mostly mesoporous

• Type IV, the material is most microporous

What is the function of a monochromator inside the UV-vis spectroscopy machine?

• It serves as a light source

• It absorbs light of a certain wavelength

• It separates light into a narrow band of wavelengths.

• It converts light into readable electronic signal

John synthesized ZIF-8 particles by aging a mixture of zinc nitrate (2 mmol) and 2-methylimidazole (2 mmol) at room temperature and obtained particles with an average size of 50 nm. However, he would like to get particles with a larger average diameter exceeding 50 nm. What steps can he do to achieve this goal?

• Increase reaction temperature, increase linker to metal precursor ratio or increase reaction time

• Decrease reaction temperature. Increase linker to metal precursor ratio or decrease reaction time

• Increase reaction temperature, decrease linker to metal precursor ratio or increase reaction time

Freundlich isotherm can be drawn by plotting log Ce vs log qe, how can I obtain the Freundlich constant, Kf?

• 1/slope

• inverse log (intercept)

• inverse log (slope)

• 1/intercept