Li Rui, Qiao Xiaohong, Ma Huijun, Li Hanmei, Li Cong, Jin Lihua
Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, People's Republic of China.
J Mater Chem B. 2022 May 4;10(17):3311-3319. doi: 10.1039/d1tb02695j.
In this work, we reported new FeC embedded Fe-N-doped carbon nanomaterials (FeC@Fe-N-CMs) generated by the facile pyrolysis of Fe-Zn ZIF precursors. The resulting FeC@Fe-N-CMs were equipped with several desirable nanozyme features, including multiple efficient intrinsic active sites ( Fe-N, FeC@C, and C-N moieties), large specific surface area and abundant mesoporous structures. As a result, these FeC@Fe-N-CMs displayed exceptional ability to mimic three enzymes: peroxidase, catalase and oxidase, while the FeC@Fe-N-CMs pyrolyzed at 800 °C, named CMs-800, showed the best enzyme-like properties. After systematically investigating the catalytic mechanism, we further explored the application of the oxidase-like properties of CMs-800 in the detection of the total antioxidant capacity (TAC) in beverages and tablets. This study not only provided a new approach to construct multifunctional carbon-based nanozymes, but also expanded the application of carbon nanozymes in the field of food quality and safety.
在本工作中，我们报道了通过Fe-Zn ZIF前驱体的简易热解生成的新型FeC嵌入的Fe-N掺杂碳纳米材料（FeC@Fe-N-CMs）。所得的FeC@Fe-N-CMs具有多种理想的纳米酶特性，包括多个高效的固有活性位点（Fe-N、FeC@C和C-N部分）、大比表面积和丰富的介孔结构。因此，这些FeC@Fe-N-CMs表现出模仿三种酶（过氧化物酶、过氧化氢酶和氧化酶）的卓越能力，而在800℃热解的FeC@Fe-N-CMs，命名为CMs-800，表现出最佳的类酶性质。在系统研究催化机制后，我们进一步探索了CMs-800的类氧化酶性质在检测饮料和片剂中总抗氧化能力（TAC）方面的应用。本研究不仅提供了一种构建多功能碳基纳米酶的新方法，还扩展了碳纳米酶在食品质量与安全领域的应用。
