Schematic diagram of five different compartments in scaffold of biocatalytic reactor. Lipid & polymer vesicles, left: Reproduced with permission.62 Copyright 2016, Wiley‐VCH, right: Reproduced with permission.72 Copyright 2017, Wiley‐VCH. Polymer capsules, left: Reproduced with permission.84 Copyright 2012, American Chemical Society, right: Reproduced with permission.88 Copyright 2010, Wiley‐VCH. Mesoporous silica particles, top: Reproduced with permission.131 Copyright 2013, American Chemical Society, bottom: Reproduced with permission.134 Copyright 2014, Wiley‐VCH. Virus capsids, left: Reproduced with permission.137 Copyright 2007, Springer Nature, right: Reproduced with permission.141 Copyright 2014, Royal Society of Chemistry. Hydrogels & polymer film, Reproduced with permission.149 Copyright 2014, The Royal Society of Chemistry.