Cu,Ce-containing phosphotungstates as laccase-like nanozyme for colorimetric detection of Cr(VI) and Fe(Ⅲ).

Autor: Gu Y; Qujing Hospital of Traditional Chinese Medicine, Qujing 655000, Yunnan, PR China., Jiao Y; 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., Ruan Y; Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, PR China., Yang J; Qujing Hospital of Traditional Chinese Medicine, Qujing 655000, Yunnan, PR China., Yang Y; Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, PR China. Electronic address: yangyl2016@qq.com.
Jazyk: angličtina
Zdroj: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [Spectrochim Acta A Mol Biomol Spectrosc] 2025 Jan 05; Vol. 324, pp. 124948. Date of Electronic Publication: 2024 Aug 14.
DOI: 10.1016/j.saa.2024.124948
Abstrakt: 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 3+ and Cr 6+ could significantly enhance the electron transfer rates of Ce 3+ and Ce 4+ , along with generous Cu 2+ 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 3+ and Cr 6+ 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.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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