Nitrogen, phosphorus co-doped hollow porous carbon microspheres as an oxidase-like electrochemical sensor for baicalin.
In: New Journal of Chemistry, Jg. 46 (2022-09-14), Heft 34, S. 16341-16351
academicJournal
Zugriff:
The extraordinary properties and unique structure of porous carbon have rapidly turned it into a new favorite in the development and application of high-performance electrocatalytic sensors. Nitrogen, phosphorus co-doped hollow porous carbon microspheres (PRM-HPAs) as an oxidase-like electrocatalytic sensor for baicalin were successfully developed by two-stage activation using both 3-aminophenol and formaldehyde as carbon sources, phosphoric acid as an activator and dopant, and N-dehydroabietoyl- L -alanine as a soft-template. Low-temperature activation in air is the key to obtaining the hollow structure, and increases the content of oxygen-containing groups. High-temperature activation with phosphoric acid in nitrogen significantly increases the micropore content of PRM-HPA, and realizes phosphorus doping. The introduction of a soft-template can effectively prevent the agglomeration of carbon particles, and form uniformly dispersed hollow carbon microspheres. The PRM-HPA with a specific surface area of 1388 m2 g−1, pore volume of 0.69 m3 g−1, and pore size of 17 Å displays excellent electrocatalytic ability, oxidase-like characteristics, and an excellent electrochemical response of about 118-fold enhancement for baicalin in linear ranges of 0.03–7.99 μM with a low limit of detection of 4.3 nM. This work will open a new pathway for the preparation of co-doped hollow porous carbon microspheres and the application of renewable rosin resource. [ABSTRACT FROM AUTHOR]
Titel: |
Nitrogen, phosphorus co-doped hollow porous carbon microspheres as an oxidase-like electrochemical sensor for baicalin.
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Autor/in / Beteiligte Person: | Jiang, Wanjun ; Wu, Shiyu ; Fan, Guorong ; Wang, Zongde ; Chen, Shangxing ; Wen, Yangping ; Wang, Peng |
Zeitschrift: | New Journal of Chemistry, Jg. 46 (2022-09-14), Heft 34, S. 16341-16351 |
Veröffentlichung: | 2022 |
Medientyp: | academicJournal |
ISSN: | 1144-0546 (print) |
DOI: | 10.1039/d2nj02721f |
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