fig4

Figure 4. The illustration of the application classification of MOFs-based hydrogel. Reproduced with permission from ref^[70]. Copyright 2022 American Chemical Society. Reproduced with permission from ref^[72]. Copyright 2021 Elsevier. Reproduced with permission from ref^[92]. Copyright 2018 Royal Society of Chemistry. Reproduced with permission from ref^[94]. Copyright 2022 American Chemical Society. Reproduced with permission from ref^[109]. Copyright 2023 Elsevier. Reproduced with permission from ref^[98]. Copyright 2023 Elsevier. Reproduced with permission from ref^[119]. Copyright 2023 Elsevier. Reproduced with permission from ref^[127]. Copyright 2022 Elsevier. Reproduced with permission from ref^[85]. Copyright 2023 Elsevier. Reproduced with permission from ref^[76]. Copyright 2022 Elsevier. Reproduced with permission from ref^[73]. Copyright 2020 Elsevier. MOFs: Metal-organic frameworks.