Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei 106, Taiwan.
Department of Chemistry, Stella Maris College, Affiliated to the University of Madras, Chennai 600086, Tamil Nadu, India.
Inorg Chem. 2021 Apr 5;60(7):5271-5281. doi: 10.1021/acs.inorgchem.1c00253. Epub 2021 Mar 18.
In the field of agriculture fungicides are vital, providing the most important ecosystem service for food production. The widespread use of these chemicals can significantly lead to various ecotoxicological threats with adverse effects, such as environmental changes, microbial resistance, and phytotoxicity. Electrochemical sensors offer enormous potential for the identification and monitoring of hazardous substances in accordance with their constructive characteristics, namely, precision, accuracy, sensitivity, and selectivity, over traditional analytical techniques. Here, we thus report the synthesis of the lanthanum vanadate/hexagonal boron nitride (LaV/h-BN) composite for the electrochemical determination of carbendazim (CZ), which is a widely used fungicide for disease management with critical risks associated with its overexposure. The combination of LaV and h-BN accelerates the formation of active sites, facilitating faster charge transfer and higher electronic conductivity. The synergistic effects greatly improve the preference of the modified electrode with increased sensitivity, a lower limit of detection, and wide linear responses toward CZ detection. The existence of variable oxidation states in the orthovanadate together with the unique properties of h-BN mark LaV/h-BN as an advanced material for specific applications in the family of rare-earth metal orthovanadate. Also, the deep eutectic solvent-assisted synthesis of the material creates an environmentally efficient system with reduced energy requisites to allow for applications in effective environmental monitoring.
在农业领域，杀菌剂是至关重要的，它们为粮食生产提供了最重要的生态系统服务。这些化学物质的广泛使用可能会显著导致各种生态毒理学威胁，产生不利影响，如环境变化、微生物耐药性和植物毒性。电化学传感器具有根据其构建特性（即精度、准确性、灵敏度和选择性）识别和监测有害物质的巨大潜力，优于传统分析技术。在这里，我们报告了镧钒酸盐/六方氮化硼（LaV/h-BN）复合材料的合成，用于电化学测定多菌灵（CZ），CZ 是一种广泛用于疾病管理的杀菌剂，但过度暴露会带来严重风险。LaV 和 h-BN 的结合加速了活性位点的形成，促进了更快的电荷转移和更高的电子导电性。协同效应极大地提高了修饰电极的选择性，增加了灵敏度、更低的检测限以及对 CZ 检测的宽线性响应。正钒酸盐中变价态的存在以及 h-BN 的独特性质使 LaV/h-BN 成为在稀土金属正钒酸盐家族中特定应用的先进材料。此外，深共晶溶剂辅助合成该材料创建了一个环境高效的系统，减少了能量需求，使其能够应用于有效的环境监测。
