The rapid, ultralow detection, degradation, and complete removal of pesticides demand the design of potential substrates. Herein, we discussed gold nanorods (Au NRs) as the potential substrate for the naked eye detection and degradation of two common and broad-spectrum pesticides, chlorpyrifos (CPF) and malathion (MLT), up to 0.15 ppt concentration within 2 min. Under certain environmental conditions, both the pesticides degraded and adsorbed on the surface of Au NRs. The degraded moieties of CPF and MLT on the surface of Au NRs formed side-to-side and end-to-end interactions, respectively, leading to a long-range assembly. This shows that no external agent is required, and only CPF and MLT analytes are quite enough for the formation of assembly of Au NRs. Assembly of Au NRs is confirmed by transmission electron microscopy (TEM) analysis, and degradation is supported by Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, and gas chromatography–mass spectrometry (GC–MS) analyses. Au NRs were recovered and reused for four consecutive cycles. The fast and ultralow detection of pesticides demonstrates that Au NRs are a potential substrate for the detection and degradation of pesticides.

中文翻译：

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金纳米棒作为农药检测和降解的高效底物。

快速，超低检测，降解和完全去除农药要求设计潜在的底物。在本文中，我们讨论了金纳米棒（Au NRs）作为裸眼检测和降解两种常见和广谱农药毒死rif（CPF）和马拉硫磷（MLT）的潜在底物，在2分钟内浓度高达0.15 ppt。在某些环境条件下，农药均降解并吸附在金NRs的表面上。Au NRs表面上CPF和MLT的降解部分分别形成了侧向和端对端的相互作用，从而导致了长距离组装。这表明不需要外部试剂，仅CPF和MLT分析物就足以形成金NR组装体。Au NR的组装通过透射电子显微镜（TEM）分析得到确认，傅里叶变换红外（FTIR）光谱，拉曼光谱和气相色谱-质谱（GC-MS）分析支持降解。回收金Au并连续四个周期重复使用。农药的快速和超低检测结果表明，金NR是检测和降解农药的潜在底物。