Construction of Ag Nanoparticles-Modified Ultrathin Poly(heptazine Imide) Photosensitization Sensing System for Visual Detection of Acetaminophen

technologies, and time-resolved studies have elucidated that Ag/PHI, characterized by its layered crystal structure and suitable energy bands, facilitates the rapid photosensitization decolorization of EY. Additionally, the formation of highly dispersed AgNPs sites significantly enhances the preferential selective adsorption of APAP through interactions between the Ag and carbonyl oxygen, thereby effectively and quantifiably inhibiting the photosensitization decolorization of EY. This approach also proved to be highly suitable for the analysis of real water samples, demonstrating considerable sensitivity and selectivity. This research underscores the application of PHI in a visible light-driven sensing system, enabling trace detection of APAP and highlighting its substantial potential for convenient water monitoring.