Manavalan Shaktivel, Thiruppathi Murugan, Senthil Chenrayan, Kim Sun-Sik, Jung Hyun Young, Jung Sung Mi
Center for Ecotoxicology and Environmental Future Research, Korea Institute of Toxicology, Jinju-si, Gyeongnam 52834, Republic of Korea.
Future Convergence Technology Research Institute, Gyeongsang National University (GNU), Jinju-si, Gyeongnam 52849, South Korea.
Food Chem. 2025 Apr 1;470:142725. doi: 10.1016/j.foodchem.2024.142725. Epub 2025 Jan 2.
Developing a highly efficient electrocatalyst for detecting hazardous bisphenol S (BPS) is essential to minimize health risks. Herein, we fabricate γ-FeO nanocubes (IONCs) anchored on carbon nanotube nanoribbons (CNRs) (denoted as IONCs-CNRs) for the electrochemical detection of BPS in vegetables. Importantly, the IONCs can be selectively formed only on CNRs via amperometric deposition, while γ-FeO cubic clusters (IOCCs) form in the absence of CNRs. This results in a remarkable 300 % increase in electrocatalytic activity compared to that exhibited by IOCCs. As a result, the IONCs-CNRs sensor exhibits high sensitivity (S = 14.7548 μAμM cm), a low detection limit of 1.9 nM, and good selectivity for BPS detection. Moreover, the sensor shows a good recovery rate of 96.23 to 99.95 % in detecting BPS in vegetable samples. The controlled IONCs-CNRs, with enhanced catalytic activity, represent a promising electrocatalyst for the on-site detection of trace amounts of BPS in food safety applications.
开发一种用于检测有害双酚S（BPS）的高效电催化剂对于将健康风险降至最低至关重要。在此，我们制备了锚定在碳纳米管纳米带（CNRs）上的γ-FeO纳米立方体（IONCs）（表示为IONCs-CNRs），用于蔬菜中BPS的电化学检测。重要的是，IONCs仅能通过安培沉积选择性地在CNRs上形成，而在没有CNRs的情况下会形成γ-FeO立方簇（IOCCs）。与IOCCs相比，这导致电催化活性显著提高300%。因此，IONCs-CNRs传感器表现出高灵敏度（S = 14.7548 μAμM cm）、1.9 nM的低检测限以及对BPS检测的良好选择性。此外，该传感器在检测蔬菜样品中的BPS时显示出96.23%至99.95%的良好回收率。具有增强催化活性的可控IONCs-CNRs是食品安全应用中痕量BPS现场检测的一种有前景的电催化剂。
