State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
Key Laboratory of Ocean Observation Technology of Ministry of Natural Resources, School of Marine Science and Technology, Tianjin University, Tianjin 300072, PR China; Zhejiang Institute of Tianjin University, Ningbo, Zhejiang 315201, PR China.
Food Chem. 2024 Apr 16;438:137946. doi: 10.1016/j.foodchem.2023.137946. Epub 2023 Nov 10.
Despite the potential of nanozymes combined with sensor arrays for discriminating multiple pesticides simultaneously, they have few practical pesticide sensing uses due to the limited performance of existing nanozymes and the complexity of their preparation. Here, agricultural waste is utilized for the facile synthesis of high-performance biochar nanozymes and the fabrication of biochar nanozyme sensor arrays. The production of autogenous N-doped biochars with abundant surface functional groups and good peroxidase-like activities is achieved with different types of algae. High-performance biochar nanozyme sensor arrays can discriminate pesticides in a concentration range from 1 to 500 μM and in real samples from soil, lake water, seawater, apples, cucumbers, peaches, tomatoes and cabbages. Furthermore, pesticides can be quantified down to 1 μM. The development of high-performance nanozyme sensor arrays based on waste conversion could be a step toward pesticide discrimination and detection, which would improve human and environmental safety.
尽管纳米酶与传感器阵列相结合具有同时区分多种农药的潜力，但由于现有纳米酶的性能有限以及其制备的复杂性，它们在实际农药传感方面的应用很少。在这里，农业废物被用于简便地合成高性能生物炭纳米酶和制造生物炭纳米酶传感器阵列。利用不同类型的藻类生产具有丰富表面官能团和良好过氧化物酶样活性的自掺杂 N 生物炭。高性能生物炭纳米酶传感器阵列可以区分浓度范围为 1 至 500 μM 的农药，并且可以区分来自土壤、湖水、海水、苹果、黄瓜、桃子、西红柿和卷心菜等实际样本中的农药。此外，还可以将农药定量至 1 μM。基于废物转化的高性能纳米酶传感器阵列的开发可能是朝着农药鉴别和检测迈出的一步，这将提高人类和环境的安全性。
