MOF-Based Hydrogels

In recent years, metal-organic framework (MOF) materials have attracted the attention of many researchers because of their excellent framework structure, rich porosity and versatility. A variety of MOF materials and MOF-based composite materials have been developed. However, most of these materials are fragile, difficult to process, and unstable in solution, which limits their practical applications. To improve these deficiencies, researchers developed MOF-based hydrogels by combining MOF with hydrogels, which have excellent properties and can be widely used in many fields.

The preparation methods of MOF-based hydrogels include direct mixing method and in situ MOF synthesis method.

Direct mixing method

In this method, before gelation, hydrogels are modified by adding MOF crystals to the liquid precursor or the sol. The final gelation of the hydrogel matrixes entraps MOF crystals, resulting in MOF-based hydrogels.

In situ MOF synthesis method

Another method for preparing MOF-based hydrogels is to in situ prepare MOF inside the pores of hydrogels. The precursor of MOF is incorporated into the hydrogels, and then, the MOF crystals are grown in situ inside the pores of the hydrogels to obtain MOF-based hydrogels.

Many matrixes of MOF-based hydrogels come from biological or biocompatible materials, so these hydrogels always have excellent properties in biological applications such as wound healing. One study suggested that the combination of zinc-vitamin and copper-vitamin MOF hydrogel microfibers is faster than the healing rate of each individual one, which due to the antibacterial and antioxidant functions of these MOF hydrogel microfibers help in wound healing^[1]. In addition, because of the porous nature of MOF and hydrogel matrixes, MOF-based hydrogels have bright prospects in the field of sensing and water treatment. Shi and coworkers prepared the Co-MOF-alginate hydrogels by a one-step method to adsorb tetracycline in water, and the maximum adsorption capacity was 364.89 mg/g^[2].

Alfa Chemistry is a leading global supplier of hydrogels. Our experienced scientists focus on the production and performance improvement of MOF-based hydrogels. Our products include but are not limited to the following. Please contact us to customize the MOF-based hydrogels you need, and we will provide you with high quality products according to your detailed requirements.

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