Inspired by the structures of enzymes, a fast and robust strategy for generating ZIF-90 metallo-nanozyme is presented. The Zn-N coordination structure in the ZIF-90 can closely imitate the catalytic center...

The recent development of nanozymes for targeting antibacterial, anticancer and antioxidant applications are summarized.

No abstract

Barbecue smoke, car exhaust, cigarette smoke, and other waste gases contain toxic reactive oxygen species (ROS) and polycyclic aromatic hydrocarbons (PAHs). Herein, CeO 2 -based porous carbonaceous frameworks (CeO 2 PCFs) were explored as antioxidant nanozymes to scavenge ROS and absorb benzo[a]pyrene (B[a]P). Using cerium-based frameworks as the precursors, CeO 2 PCFs were constructed by high-temperature calcination. Due to excellent superoxide dismutase-like and catalase-like activity, CeO 2 PCFs could effectively eliminate superoxide radical, hydroxyl radical, and hydrogen peroxide. The 2,2′-azino-bis (3ethylbenzthiazoline-6-sulfonic acid) free radical scavenging assay had substantiated free radical scavenging ability of CeO 2 PCFs. In addition, with a large surface area and porous structure, CeO 2 PCFs could adsorb B[a]P efficiently. The designed CeO 2 PCFs may provide a new opportunity as scavengers of ROS and absorbents of PAHs in some harmful gases.