Synergistic multi-selective photocatalysis and real-time optical thermometry of CsPbBr3/BiOI/TiO2@PAN flexible nanofibers

Literature Information

Publication Date 2023-10-25
DOI 10.1039/D3TA04964G
Impact Factor 12.732
Authors

Yanyan Li, Edwin Yue Bun Pun


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Abstract

Effective utilization of solar energy through photocatalytic oxidation is of great significance for environmental restoration and sustainable development. In order to realize the rapid separation of electron–hole pairs and improve the photocatalytic degradation activity, a multifunctional CsPbBr3/BiOI/TiO2 nanofiber photocatalyst with a symmetric double heterojunction structure is synthesized by combining electrospinning, hydrothermal and wet impregnation methods. Compared with powder photocatalysts, polyacrylonitrile (PAN) composite fibers work as a carrier offering the advantages of reusability, excellent flexibility, thermal stability, a controlled structure and a large specific surface area. Benefiting from the effective interfacial charge transfer and enhanced visible-light absorption, the obtained CsPbBr3/BiOI/TiO2@PAN nanofibers exhibit superior photocatalytic efficiency for rhodamine B, tetracycline hydrochloride, phenol and bisphenol A under simulated sun-light irradiation. Based on fluorescence intensity ratio (FIR) thermometry, the emission peaks of CsPbBr3 at 516 nm and PAN at 479 nm can be utilized for accurate non-contact temperature monitoring and real-time thermal feedback in complex degradation systems, and the maximum relative sensitivity SR is obtained as 0.0117 K−1 at 353 K. In conclusion, multi-selective photocatalysis fibers with real-time optical thermometry properties provide new application prospects for water purification in extremely harsh environments.

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Journal of Materials Chemistry A

Journal of Materials Chemistry A
CiteScore: 19.5
Self-citation Rate: 4.7%
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Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

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