Study of the interaction mechanism between hydrophilic thiol capped gold nanoparticles and melamine in aqueous medium

Sara Cerra,Tommaso A. Salamone,Fabio Sciubba,Martina Marsotto,Chiara Battocchio,Silvia Nappini,Francesca A. Scaramuzzo,Roberto Li Voti,Concita Sibilia,Roberto Matassa,Ana Maria Beltrán,Giuseppe Familiari,Ilaria Fratoddi

Colloids and Surfaces B: Biointerfaces（2021）

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摘要

•Hydrophilic gold nanoparticles for melamine detection were prepared.•The melamine was successfully detected in the range 2.5−500 ppm.•The sensing method based on the melamine-induced aggregation of AuNPs.•The recognition process is mediated by electrostatic interactions.

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关键词

Hydrophilic gold nanoparticles,Melamine,3-mercapto-1-propanesulfonate,Aggregation mechanism,Electrostatic interactions

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