Intensive singlet oxygen photogeneration and photocatalytic activity of Sn,Fe-doped ZnO-based composites

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-01-09 DOI:10.1016/j.jphotochem.2024.116254

L.L. Khomutinnikova , S.K. Evstropiev , I.K. Meshkovskii , I.V. Moskalenko , I.V. Bagrov , E.V. Skorb

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引用次数: 0

Abstract

The singlet oxygen photogeneration by Sn,Fe-doped ZnO-based composites under radiation of different light sources was studied in detail. The composites were synthesized by the polymeric sol–gel method and their morphology, spectral and luminescent properties were characterized. The luminescence spectroscopy, ESR analysis and the investigation of photocatalytic activities of materials were applied for the detail characterization of the process of reactive oxygen species (ROS) photogeneration. The experimental results of the luminescence spectroscopy and ESR analysis show that the dependencies of the intensity of singlet oxygen photogeneration by composites from the power density of exciting radiation (λ_ex = 370 nm or 405 nm) are linear. The modification of ZnO by SnO₂ and Fe₂O₃ significantly increases the ability of the singlet oxygen photogeneration (ZnO < ZnO-SnO₂ < ZnO-SnO₂-Fe₂O₃) and improves the photocatalytic activity.

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.