Functional Materials with Wide-Spectral-Responsive Photocatalytic Activity and Real-Time Temperature Feedback : The Electrospun Fibers Embedded with NaGdF4-Tm-Yb@TiO2 Nanocrystals

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Article number2101869
Journal / PublicationAdvanced Materials Interfaces
Volume9
Issue number7
Online published27 Jan 2022
Publication statusPublished - 2 Mar 2022

Abstract

In this work, combining the advantages of upconversion materials, nanofibers, and TiO2 semiconductors, the composite fibers embedded with NaGdF4: Tm3+, Yb3+@TiO2 nanocrystals (NGF-TY@TiO2 NCs) are prepared as wide-spectral (UV-NIR) response photocatalysts and temperature sensing materials. Based on the FIR technique, both the thermally (3F2,3 and 3H4) and nonthermally (1G4 and 3F2,3) coupled levels of Tm3+ are confirmed to be applicable as temperature probes for real-time monitoring and feedback of the working temperature of the catalytic degradation process, and the maximum relative sensitivity values of SR1 and SR2 are as high as 2.760%K−1 and 3.019%K−1 at 304 K, respectively. Under 977 nm laser excitation, the energy migration from NGF-T0.4Y6 to TiO2 is demonstrated to a fluorescence resonance energy transfer process. The degradation ratio of rhodamine B (RhB) is 19.3% in the presence of NGF-T0.4Y6@TiO2/PAN fibers and the degradation constant K reaches 0.00117 min−1 after 3 h irradiating from Xe lamp with a UV cutoff filter. Accordingly, this study suggests a new perspective to utilize the NIR energy of sunlight for photocatalytic application based on TiO2, and the addition of dual temperature feedback provides a reliable reference for the development of safer and more efficient catalytic materials.

Research Area(s)

  • fibers embedded with nanocrystals, NaGdF4:Tm3+, photocatalytic activity, temperature feedback, Yb3+@TiO2

Citation Format(s)

Functional Materials with Wide-Spectral-Responsive Photocatalytic Activity and Real-Time Temperature Feedback: The Electrospun Fibers Embedded with NaGdF4-Tm-Yb@TiO2 Nanocrystals. / Gao, Zelin; Wang, Jingru; Yu, Dechuan et al.
In: Advanced Materials Interfaces, Vol. 9, No. 7, 2101869, 02.03.2022.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review