View in EDS

Strategic defect engineering and valence modulation in B-doped CeO2 nanoparticles for highly sensitive and reliable electrochemical detection of p-nitrophenol.

Saved in:
Bibliographic Details
Title: Strategic defect engineering and valence modulation in B-doped CeO2 nanoparticles for highly sensitive and reliable electrochemical detection of p-nitrophenol.
Authors: Li, Hao-Ran1 (AUTHOR), Xu, Huan1 (AUTHOR), Zheng, Zi-Yi1 (AUTHOR), Li, Guan-Hua1 (AUTHOR), You, Zhi-Yong1 (AUTHOR), Li, Shan-Shan1 (AUTHOR) sa157002@mail.ustc.edu.cn
Source: Microchimica Acta. Sep2025, Vol. 192 Issue 9, p1-15. 15p.
Subjects: Nitrophenols, Nanoparticles, Cerium oxides, Electrochemical sensors, Reactivity (Chemistry), Oxygen vacancy, Environmental monitoring, Detectors
Abstract: Boron-doped CeO2 (B-CeO2) modified electrodes were developed for the sensitive detection of p-nitrophenol (PNP). The CeO2 and B-CeO2 nanomaterials were characterized via various techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS), and the successful doping of B and the maintenance of the crystal structure of CeO2 were confirmed. The B-CeO2 showed an average particle size ranging from 50 to 100 nm. B doping increased the proportion of Ce(III), facilitated faster redox cycling between Ce(III) and Ce(IV), and resulted in the formation of oxygen vacancies (OVs), which served as additional active sites. The B-CeO2 electrode exhibited high sensitivity with a detection limit of 26 nmol L−1 in the concentration range 0–10 μmol L−1. Furthermore, B-CeO2 showed excellent resistance to interference from both organic pollutants and inorganic ions, making it suitable for complex environmental applications. Recovery tests on spiked samples yielded impressive results, with recoveries ranging from 92.67% to 103.25%, demonstrating the sensor's potential for real-world applications. These findings reveal the potential of B-CeO2 for efficient, practical applications in the electrochemical detection of environmental pollutants and for advancing sensor technologies in environmental monitoring. [ABSTRACT FROM AUTHOR]
Copyright of Microchimica Acta is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:Boron-doped CeO2 (B-CeO2) modified electrodes were developed for the sensitive detection of p-nitrophenol (PNP). The CeO2 and B-CeO2 nanomaterials were characterized via various techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS), and the successful doping of B and the maintenance of the crystal structure of CeO2 were confirmed. The B-CeO2 showed an average particle size ranging from 50 to 100 nm. B doping increased the proportion of Ce(III), facilitated faster redox cycling between Ce(III) and Ce(IV), and resulted in the formation of oxygen vacancies (OVs), which served as additional active sites. The B-CeO2 electrode exhibited high sensitivity with a detection limit of 26 nmol L−1 in the concentration range 0–10 μmol L−1. Furthermore, B-CeO2 showed excellent resistance to interference from both organic pollutants and inorganic ions, making it suitable for complex environmental applications. Recovery tests on spiked samples yielded impressive results, with recoveries ranging from 92.67% to 103.25%, demonstrating the sensor's potential for real-world applications. These findings reveal the potential of B-CeO2 for efficient, practical applications in the electrochemical detection of environmental pollutants and for advancing sensor technologies in environmental monitoring. [ABSTRACT FROM AUTHOR]
ISSN:00263672
DOI:10.1007/s00604-025-07486-2