Porous double variable-valence FeCe nanozyme: preparation, catalytic mechanism, and use as sensor array for high-throughput discrimination of heavy metal ions.

Fuqiang Hu, Taimei Cai, Wenting Zhu, Hailong Peng

Abstract read

In one paragraph

Article in Mikrochimica acta, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

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4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Fuqiang HuSchool of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China.

Taimei CaiSchool of Life Science, Jiangxi Science and Technology Normal University, Nanchang, 330013, China.

Wenting ZhuKey Laboratory of Modern Preparation of Traditional Chinese Medicine, Traditional Chinese Medicine Pharmaceutical Technology Collaborative Innovation Institute, Jiangxi University of Chinese Medicine, Nanchang, 330004, China. zhuwenting1@jxutcm.edu.cn.

Hailong PengSchool of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China. penghailong@ncu.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A porous double variable-valence FeCe nanozyme (pFeCezyme) was designed using hemoglobin as template and Fe-source. pFeCezyme exhibited excellent peroxidase (POD)-like activity due to the porous structure, maximized exposure of active sites, synergy of double variable-valence metals, and enhanced electron transfer between Fe and Ce. The POD-like activity can be quenched (off) by L-cysteine (L-Cys) and then restored (on) by adding of heavy metal ions (HMIs). The degree effect of "on-off" POD-like activity can be varied by changing pH conditions. Therefore, a three-channels pFeCezyme sensor array was established using pH values (pH = 4.0, 5.0, and 6.0) as sensing elements. Interestingly, pFeCezyme sensor array can generate distinct colorimetric fingerprints due to the different affinity ability between L-Cys and HMIs. The pFeCezyme sensor array was successfully applied to highly sensitive and high throughput discrimination of HMIs (Ag

Indexed as

Biosensing TechniquesIronMetals, HeavyNanostructuresCatalysisColorimetryHemoglobinsHydrogen-Ion ConcentrationLimit of DetectionPorosityHemoglobinsIronMetals, HeavyColorimetric sensor arrayDouble variable-valenceFeCe nanozymeHeavy metal ions

Identifiers

PMID40555832

DOI10.1007/s00604-025-07310-x

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.