Environmental sustainability is threatened by the widespread exploitation and unfettered release of chemical pollutants that require immediate detection and eradication. An instantaneous quantification technique is essential to understand the physiological roles of the antibacterial drug sulfaguanidine (SGN) in biological systems. The present work features the green and environmentally benign synthesis of rare earth metal sulfide nanorods incorporated carbon nitrides sheets (Ce₂S₃@CNS) by deep eutectic solvent-based fabrication with remarkable electrochemical properties. The morphological and structural analyses of the prepared electrocatalyst were characterized using various techniques including SEM, XRD, XPS, and EIS. The heterojunction of regimented structures bids synergistic quantum confinement effects and refines charge carriers endorsing enormous active sites. Furthermore, the obtained Ce₂S₃@CNS/GCE possess an exceedingly lower limit of detection (0.0053 μM) and high sensitivity of 8.685 μA·μM⁻¹·cm⁻² with superior electrocatalytic action and virtuous stability for the detection of SGN. This modified electrode could afford linearity in the range 0.01–1131.5 μM measured at 0.95 V (vs. Ag/AgCl) correlated to the concentration of SGN. Examining the real samples with this advanced electrocatalyst would support its hands-on applications in everyday life. Development of such innovative architectures with fewer energy necessities and nominal by-products scripts the superiority in characteristic synthetic methodology following the guidelines of green chemistry.

Graphical abstract

中文翻译：

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镧系硫化铈嵌入氮化碳复合修饰电极用于磺胺胍电位电化学检测

环境可持续性受到需要立即检测和根除的化学污染物的广泛开发和无限制释放的威胁。瞬时定量技术对于了解抗菌药物磺胺胍 (SGN) 在生物系统中的生理作用至关重要。目前的工作特点是稀土金属硫化物纳米棒的绿色和环境友好合成结合氮化碳片（Ce ₂ S ₃@CNS）通过具有显着电化学性能的深共晶溶剂基制造。使用各种技术，包括 SEM、XRD、XPS 和 EIS，对制备的电催化剂的形态和结构进行了表征。有序结构的异质结提供协同量子限制效应并细化支持巨大活性位点的电荷载流子。此外，获得的Ce ₂ S ₃ @CNS/GCE具有极低的检测限（0.0053 μM）和8.685 μA·μM ^-1 ·cm ^{-2 的}高灵敏度具有优异的电催化作用和良性稳定性，用于检测 SGN。这种改进的电极可以提供 0.01–1131.5 μM 范围内的线性度，在与 SGN 浓度相关的 0.95 V（相对于 Ag/AgCl）下测量。使用这种先进的电催化剂检查真实样品将支持其在日常生活中的实际应用。这种具有较少能源需求和名义副产品的创新架构的开发体现了遵循绿色化学指导方针的特征合成方法的优势。

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