A method for forming micro-particles is provided. The methodincludes the steps of: - providing a first solution which includes at least ananion； - providing a second solution which includes at least a cation； -mixing thefirst solution with the second solution in presence of at least a firstcompoundfor forming porous templates, wherein the porous templates are formed byprecipitationof a salt which includes the anion and the cation and wherein the firstcompound is at least partially incorporated in the porous templates； and - atleastpartially cross-linking the first compound in the porous templates.
