3,4-Dihydroxyhydrocinnamic acid-engineered flower-like MOF@UCNPs as robust peroxidase mimics for triple-mode H2S detection: application in pork and egg freshness monitoring

Ginkgo biloba leaf polysaccharide-modified Cu2-xSe nanozymes for smartphone-assisted colorimetric detection of food additive propyl gallate.

Propyl gallate (PG), a widely used synthetic phenolic antioxidant, has raised health concerns due to its potential risks from overexposure. Traditional methods such as chromatography are typically time-consuming, labor-intensive, and not suitable for on-site rapid screening. In this work, we successfully fabricated ult...

An all-in-one Zn/Ce-MOF nanozyme: combining ratiometric sensing, oxidase-like activity, and apparent phosphoester hydrolase-like behavior for organophosphorus pesticide monitoring.

The widespread residue of highly toxic organophosphorus pesticides (OPs) poses a serious threat to food safety and human health, underscoring the need for sensitive screening methods. In this work, a ratiometric fluorescence sensor array was constructed based on a trifunctional Zn/Ce-MOF exhibiting intrinsic blue fluor...

Photoactivated fluorescent nanozymes from mulberry leaf-derived carbon dots for dual-mode antioxidant determination and biothiol contribution estimation

Bimetallic FeZr-MOF with enhanced peroxidase activity via Fe-O-Zr bridging electronic synergistic effects: a three-channel sensor for organophosphorus pesticide recognition.

Organophosphorus pesticides present a notable risk to public health, making it essential to develop swift and dependable analytical techniques for food safety, yet conventional single-channel colorimetric sensors face great challenges in discriminating multiple structurally similar pesticides with high accuracy. To add...

Colorimetric-SERS Dual-Mode Detection of Organophosphorus Pesticides Using Au-R-Fe3O4 Nanozyme Cascade Platform: A Practical Approach for Chemistry Education

Organophosphorus pesticides (OPs) pose significant environmental and health risks due to their persistence and neurotoxicity, yet current detection methods rely on sophisticated instrumentation inaccessible to educational settings. To address this pedagogical gap, we developed a recyclable Au-R-Fe3O4 nanozyme cascade...

A dual-mode electrochemical-colorimetric sensor based on Cu-MoSe2@AuNPs nanozyme assembly for the determination of ochratoxin A in food