 review articles are appearing every year, in a range of journals.A book-length treatment appeared in 2015, described as providing "a broad portrait of nanozymes in the context of artificial enzyme research", and a 2016 Chinese book on "Enzyme Engineering" included a chapter on "Nanozymes".Colorimetric applications of peroxidase mimesis in different preparations were reported in 2010 and 2011, detecting, respectively, glucose (via carboxyl‐modified graphene oxide) and single-nucleotide polymorphisms (via hemin−graphene hybrid nanosheets, and without labelling), with advantages in both cases of cost and convenience.