Hello, i prepared porous carbon using direct and salt template method. i thought the salt template should only give mesoporous carbon but i got hysteresis in the two methods. How do i explain that the salt template improved the porosity more than the direct carbonization
Chinedu Onyeke, the given isotherms indicate that the salt template method was successful in producing a carbon material with a higher concentration of mesopores and a larger overall surface area compared to the directly carbonized carbon. Ink-bottle pores are pores with narrow necks that are wider than the pore body.
Dear Chinedu Onyeke According to your results, the molten salt approach produces more porosity. The explanation for this is the mechanism of pore development in the molten salt process. Molten salt functions as a confined reaction chamber, creating an environment where salt ions infiltrate into carbon structure during high-temperature treatment and create well-defined pores. Nature of these pores, whether micro, meso, or macro, is associated with several critical parameters, including the size of the salt ions, the annealing temperature, and the duration of the process. Relevant literature can provide deeper understanding.
Best
Chinedu Onyeke
In the presence of salt, the carbon precursor is less hydrated and this improves carbonation. Salt binds water better than fiber and wood. Look at hydration energies.
At a higher temperature, the salt may melt, which Shahid Zaman writes about.
Thank you all for your answers.
Please so for the two isotherm...they are all mesopores.
What types of hysteresis loop and isotherm type should I empasize for each one
- Badges
- Science topic