Dear researchers,
I have recently synthesised MXene by etching MAX phase source using in-situ fluoride based etchant and collected the supernatant solution obtained after the washing process. My question is how can I determine the concentration of MXene in the solution?
I included an excerpt from a research paper that made me curious about the steps to determine the concentration - "...followed by centrifugation at 3500 rpm for 1 h to obtain the Ti3C2Tx colloidal solution. After drying, 1 mL of the Ti3C2Tx colloid was weighed to calculate its concentration, yielding 1.2 g, then configured into a 1 mg mL−1 solution."
While I see the point of drying the colloid solution and measure the dried powder afterwards, how can one configure the solution into 1mg/ml? Appreciate additional explanation and clarification. Thank you.
Nur Quratul Ainni Muhammad Esham The following procedure should be followed in order to find the MXene colloidal solution's concentration:
𝑉(solvent) = [{𝐶 (initial) × 𝑉 (initial)}/𝐶 final] − 𝑉 initial
6. Mix MXene solution with solvent, ensuring uniform concentration.
Stability of colloidal solutions may be affected by synthesis method, storage conditions, and defects.
I hope this is useful. Good luck with your research!
Best Regards,
Alvena Shahid
Dear Alvena Shahid, thank you for your answer and recommendation.
Just to make sure that I correctly understand the variables in the formula you mentioned for configuring the solution.
My understanding is as follows:
- C initial = concentration determined after drying and weighing the MXene, as in step 4
- V initial = volume of colloidal solution (the supernatant)
- C final would be the desired concentration of the solution I want to achieve, correct?
- V solvent, is it correct to assume this is the volume of solvent
I need to add to the initial colloidal solution to achieve the desired C final?
Could you please confirm or correct my understanding of these variables?
Thank you once again for your assistance.
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