Artificial enzymes is an emerging field of research owing to the remarkable advantages of enzyme mimics over their natural counterpart, including tunable catalytic efficiencies, lower cost, ease of preparation, and excellent tolerance to variations of the reaction system. Herein, we report an efficient peroxidase mimic based on a copper-modified covalent triazine framework (CCTF). Owing to its unique specific surface area, atomically dispersed active Cu sites, efficient electron transfer, and enhanced photo-assisted enzyme-like activity, the CCTF showed enhanced peroxidase-like enzyme activity. Therefore, copper modification represents an effective route to tailor the peroxidase-like activity of the covalent triazine frameworks. Furthermore, the mechanism of the enhanced peroxidase-like activity and stability of the CCTF were investigated. As a proof of concept, the CCTF was used for the colorimetric detection of H O and decomposition of organic pollutants. This work provides a new strategy for the design of enzyme mimics with a broad range of potential applications.

A novel and inexpensive approach was adopted to develop magnetic porous γ-Fe2O3/C@HKUST-1 composites for the adsorption of dyes and heavy metal ions from aqueous solution.

CoS, which was prepared using a facile solvothermal method, and characterized using various analytical techniques, was demonstrated for the first time to exhibit intrinsic peroxidase-like activity.

Metal–organic framework-based peroxidase mimetics for enzyme-inhibitor screening.

A magnetic nanostructured porous carbon material (γ-Fe2O3/C) was easily synthesized using a microwave-enhanced high-temperature ionothermal method with an iron terephthalate metal–organic framework-MIL-53(Fe), as a template.

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In this work, a promising peroxidase-like nanozyme 2D Fe-CTF was successfully synthesized after a single iron atom was anchored on the 2D CTF.

In this study, a simple and novel “off–on” colorimetric sensor for the detection of mercury ions (Hg2+) in aqueous solution was developed.