Core–shell Au@CeO2 nanozyme-mediated aptasensor for dual-mode SERS/colorimetric detection of kanamycin

Core–shell Au@Ag nanoparticles as a high-performance SERS substrate for detection of multiple fungicides on mango surfaces

Fungicide residues pose significant risks to food safety and public health. Conventional detection methods are often time-consuming, expensive, and require complex sample preparation, limiting their applicability for rapid on-site detection. In this study, gold-core silver-shell nanoparticles (Au@Ag NPs) were synthesiz...

Synergistic dual-recognition enabled by single-atom nanozyme and aptamer for ultrasensitive colorimetric detection of glyphosate.

While nanozyme-based inhibition strategies are attractive for on-site detection of pesticides, their sensitivity is primarily hampered by insufficient interactions at the nanozyme-pesticide interface. To address this, we developed a dual-recognition system that integrates a Fe/Cu-N-C single-atom nanozyme (SAzyme) with...

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

Atomically dispersed ruthenium on magnetic layered double hydroxide nanozyme for a multi-mode aptasensor enabling highly sensitive kanamycin detection.

Kanamycin residues in food pose health risks due to their ototoxicity, nephrotoxicity, and antimicrobial resistance promotion. This work reports a multi-mode aptasensor combining atomically dispersed ruthenium-doped magnetic layered double hydroxide (RuSA/MLDH) with exonuclease I-assisted amplification. RuSA/MLDH exhib...

A target-induced displacement-assisted colorimetric aptasensor for tetracycline detection based on Co MOF@Au NPs nanozymes.

Tetracycline (TC) residues in milk present a potential risk to food safety and human health, highlighting the urgent need to develop rapid and reliable detection strategies. Herein, a target-induced displacement (TID)-based colorimetric aptasensor was assembled for the sensitive detection of TC using oxidase (OXD)-like...

A high-performance Au@γ-Al2O3 SERS substrate for reliable monitoring of trimethoprim.

Novel Au@γ-Al2O3 nanoparticles were synthesized and used as a substrate for the determination of trimethoprim (TPM) in samples by surface-enhanced Raman spectroscopy (SERS). The newly prepared Au@γ-Al2O3 nanoparticles were characterized by ultraviolet spectroscopy, infrared spectroscopy and scanning electron microscopy...