Fig. 3

a Au NP-based BMNZ that catalyzes the formation of OH^· radicals. Reprinted from Ref. [101] with permission from Elsevier Inc. Copyright 2015. b Synthesis procedure for Au–Si–Azo nanocomposite BMNZ with photo-responsive CAT-like activity. Reprinted from Ref. [54] with permission from Wiley–VCH. Copyright 2017. c Schematic of the catalytic mechanism on OXD-mimetic BMNZ composed of Au nanoclusters. Reprinted from Ref. [53] with permission from the American Chemical Society. Copyright 2010. d CAT- and SOD-mimetic Pd BMNZ for the reduction of ROS: Schematic of the catalytic mechanism, and TEM and HRTEM images of the Pd octahedrons. Reprinted from Ref. [57] with permission from the American Chemical Society. Copyright 2016. e SEM image and UV–vis–NIR absorption spectrum of Au@Pt nanostructure with intrinsic POD and OXD-like activities. Reprinted from Ref. [60] with permission from Elsevier Inc. Copyright 2011