Nanozymes: powerful catalytic materials for environmental pollutant detection and degradation

Abstract

The increasing environmental pollution and its threats to human health require efficient monitoring and remediation techniques. Enzymes are a significant role in environmental monitoring and remediation, but the vulnerable performance...

Opportunities and challenges for plastic depolymerization by biomimetic catalysis

“…Various Fe-based, V-based and MOF-based materials have been reported to exhibit peroxidase-like activity, 93,97–100 providing additional references for developing peroxidase mimics for plastic depolymerization. Iron oxide nanoparticles are widely used in the biomedical field and environmental remediation due to their outstanding peroxidase-like activity.…”

CoMnOx Nanoflower-Based Smartphone Sensing Platform and Virtual Reality Display for Colorimetric Detection of Ziram and Cu2+

“…According to different catalytic types, redox nanozymes often present many kinds of simulated enzyme activities, such as peroxidase-(POD), oxidase-(OXD), catalase-(CAT), and superoxide dismutase-like (SOD) activities [19][20][21][22]. Most research in the field currently focuses on peroxidase-like activity, whereas oxidaselike activity receives much less attention [23][24][25][26]. In the process of catalysis by peroxidase mimics, external H 2 O 2 is required to act as an electron acceptor.…”

Nanozyme Metabolism Controls Air Pollution over an Atomic Potassium Cyano Site

“…Within this biological factory containing various enzymes, specific or multiple synergized enzymatic catalysis can be dispatched to process different substances . For example, flavoenzymes can metabolize some substrates by activating O 2 , , where produced H 2 O 2 further assists peroxidases to oxidize other substrates. , Notably, nanozymes featuring enzyme-like activities are promising to build an artificial metabolism system for catalyzing complex reactions in vitro against a range of air pollutants. − Their nanomaterial characteristics not only enable high tolerance in complex and harsh application environments but also allow adjustability to fit different catalytic conditions. − In particular, the unique photoresponsive ability enables polymeric carbon nitride (CN) to be an optimal choice, which can regulate its intrinsic nanozyme activity and even bring about photocatalytic activity in the construction of nanozyme metabolism systems. However, pristine crystalline CN with limited active sites shows inferior activity .…”