Abstract: Disclosed herein are hydrogel precursor solutions, hydrogels, and methods of preparation and uses of the same. The hydrogels may be gelled at room temperature, in the absence of added light or heat, to yield ultra-strong hydrogel fibers suitable for load-bearing applications, or as adhesives or coatings. The hydrogels may include a polymerized polymer containing acrylic acid, additional acrylic acid, an organic acid such as citric acid, and an oxidizing agent such as a persulfate salt. Silver-lignin nanoparticle suspensions may be used to initiate a free radical oxidative decarboxylation reaction in the disclosed compositions. Hydrogels may be prepared from such compositions through incubation leading to gelling. The gelled hydrogels may be stretched or spun into hydrogel fibers having desirable mechanical properties, such as strength, stretchability, and adhesion.

Abstract: There is described herein a metal organic framework (MOF) composite material, the composite material having a MOF entrapped within a hydrogel.

Abstract: There is described herein a metal organic framework (MOF) composite material, the composite material having a MOF entrapped within a hydrogel.