Abstract：
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 Fe3+ and Cr6+ could significantly enhance the electron transfer rates of Ce3+ and Ce4+, along with generous Cu2+ with high catalytic activity, thereby promoting the laccase-like activity of Cu,Ce-PTs. The proposed system can be used for the detection of Fe3+ and Cr6+ 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.
摘要：
在这里，铜的纳米复合材料，含Ce磷钨酸盐(Cu，Ce-PT）通过一锅法微波辅助水热法制备了具有出色的漆酶样活性。值得注意的是,研究发现,Fe3+和Cr6+均能显著提高Ce3+和Ce4+的电子转移速率,以及具有高催化活性的大量Cu2+，从而促进Cu的漆酶样活性，Ce-PT.所提出的系统可用于检测0.667-333.33μg/mL和0.033-33.33μg/mL范围内的Fe3和Cr6，低检测限为0.135μg/mL和0.0288μg/mL，分别。所提出的测定法具有出色的可重用性和选择性，可用于中药样品分析。
