Qujing Hospital of Traditional Chinese Medicine, Qujing 655000, Yunnan, PR China.
Yunnan Lunyang Technology Co., Ltd., Kunming 650000, Yunnan, PR China; Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2025 Jan 5;324:124948. doi: 10.1016/j.saa.2024.124948. Epub 2024 Aug 14.
Herein, a nanocomposite of Cu,Ce-containing phosphotungstates (Cu,Ce-PTs) with outstanding laccase-like activity was fabricated via a one-pot microwave-assisted hydrothermal method. Notably, it was discovered that both Fe and Cr could significantly enhance the electron transfer rates of Ce and Ce, along with generous Cu with high catalytic activity, thereby promoting the laccase-like activity of Cu,Ce-PTs. The proposed system can be used for the detection of Fe and Cr in a range of 0.667-333.33 μg/mL and 0.033-33.33 μg/mL with a low detection limit of 0.135 μg/mL and 0.0288 μg/mL, respectively. The proposed assay exhibits excellent reusability and selectivity and can be used in traditional Chinese medicine samples analysis.
本文通过一锅微波辅助水热法制备了具有出色漆酶样活性的含铜、铈的磷钨酸盐纳米复合材料。值得注意的是，发现铁和铬可以显著提高铈和铈的电子转移率，同时还提供了具有高催化活性的大量铜，从而促进了 Cu，Ce-PTs 的漆酶样活性。该体系可用于检测范围在 0.667-333.33μg/mL 和 0.033-33.33μg/mL 内的 Fe 和 Cr，检测限分别为 0.135μg/mL 和 0.0288μg/mL。所提出的测定方法具有良好的可重复使用性和选择性，可用于中药样品分析。
