Enhancement of oxygen sensing performance of metalloporphyrin film modified with nano Al2O3 powder

In this work, the metalloporphyrin film of PtOEP/Poly (St-co-TFEMA) modified by nano Al2O3 powder was prepared, and the enhancement performance of oxygen sensing was studied in detail. It was verified that the modified film extended the residence time of oxygen through the characterization of SEM. T...

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Bibliographic Details
Published in:Heliyon 2023-07, Vol.9 (7), p.e18300-e18300, Article e18300
Main Authors: Zhang, Honglin, Zhang, Ke, Zhiguo, Zhiguo, Hao, Jian
Format: Article
Language:English
Subjects:
Al2O3 modification
aluminum oxide
metalloporphyrins
oxygen
Oxygen sensing
phosphorescence
probability
Stern-volmer equation
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Summary:In this work, the metalloporphyrin film of PtOEP/Poly (St-co-TFEMA) modified by nano Al2O3 powder was prepared, and the enhancement performance of oxygen sensing was studied in detail. It was verified that the modified film extended the residence time of oxygen through the characterization of SEM. The phosphorescence intensity changes with the content of Al2O3 and PtOEP were studied. The Stern-Volmer equations before and after modification of Al2O3 powder was compared. It was found that the linearity of the calibration curve was still high, but the oxygen sensitivity value of KSV was significantly improved due to the increase of quenching probability between indicator and oxygen. Finally, the stability test shows that the Al2O3@PtOEP/Poly (St-co-TFEMA) oxygen sensing film presents a strong anti-photo-bleaching ability, and the response time is shortened.
ISSN:2405-8440
2405-8440
DOI:10.1016/j.heliyon.2023.e18300