Here in this work, we have used synthesized silver nano-hexagon for the sensing of chlorpyrifos (CP) in water at very low ppm level. Silver nano-hexagons have been synthesized through chemical reduction method, using polyvinylpyrrolidone (PVP) as a capping agent, with an average size of around 50 nm. Colorimetric as well as spectrophotometric analysis show the sensing of chlorpyrifos at very low ppm level of 5 ppm, which is based on the surface plasmon resonance (SPR) of silver nanocrystals. It has been observed that on treating the CP with silver nano-hexagons solution, colourlessness of the silver solution take place, whereas spectrophotometric study show the blue shift as well as decrease of the intensity of SPR peak, confirming the etching of the silver nano-hexagons. The etching of silver nanocrystals is further found in the TEM images of the silver nanocrystals, after treatment with chlorpyrifos. Moreover, CP gets converted into 3,5,6-trichloro-2-pyridinol (TCP) via chlorpyrifos oxon much more faster on treating with silver nano-hexagon solution and the conversion has been confirmed from the UV/Visible spectra as well as Nuclear magnetic resonance (NMR) spectra.

在这项工作中，我们使用合成的银纳米六边形用于感测水中ppm极低的毒死at（CP）。银纳米六边形已通过化学还原法合成，使用聚乙烯吡咯烷酮（PVP）作为封端剂，平均尺寸约为50 nm。比色法和分光光度法分析显示，在5 ppm的极低ppm水平下，毒死rif的感测是基于银纳米晶体的表面等离振子共振（SPR）。已经观察到，在用银纳米六方溶液处理CP时，银溶液发生了无色，而分光光度法研究表明蓝移以及SPR峰强度的降低，证实了对银纳米线的蚀刻。六边形。用毒死rif处理后，在银纳米晶体的TEM图像中进一步发现了银纳米晶体的蚀刻。此外，在用银纳米六方溶液处理时，CP通过毒死rif（Cypyrifos oxon）将CP转化为3,5,6-三氯-2-吡啶醇（TCP）的速度要快得多，并且已经从UV / Vis光谱以及核反应中证实了该转化。核磁共振（NMR）光谱。