Photo-induced reduction of Cr6+ by the hybrid systems “CuII complex with Schiff base and TiO2”: dependence on irradiation wavelength
- Authors: Yoshida N.1, Tsaturyan A.A.2, Akitsu T.1, Tsunoda Y.1, Shcherbakov I.N.2
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Affiliations:
- Department of Chemistry, Faculty of Science, Tokyo University of Science
- Southern Federal University
- Issue: Vol 66, No 11 (2017)
- Pages: 2057-2065
- Section: Full Article
- URL: https://journals.rcsi.science/1066-5285/article/view/241527
- DOI: https://doi.org/10.1007/s11172-017-1981-7
- ID: 241527
Cite item
Abstract
The synthesis of novel CuII complexes with a Schiff base obtained by condensation of salicylaldehyde and an l-aspartic acid ester are described. The physicochemical properties of the complexes were compared with those of related CuII complexes obtained earlier. All the complexes studied were characterized by elemental analysis as well as by IR, UV-Vis, and EPR spectroscopies. The activity of the complexes and their hybrid systems (HS) with TiO2 in visible-light-driven photocatalysis in organic solvents was investigated. After irradiation with visible light, the complexes and corresponding HS reduce Cr6+ to Cr3+ more efficiently than bare TiO2. To determine the molecular orbital compositions and energies and to explain the electronic spectra and redox properties of the systems studied, density functional calculations of the optimized structures of representative model complexes were performed.
About the authors
N. Yoshida
Department of Chemistry, Faculty of Science, Tokyo University of Science
Email: akitsu@rs.kagu.tus.ac.jp
Japan, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601
A. A. Tsaturyan
Southern Federal University
Author for correspondence.
Email: akitsu@rs.kagu.tus.ac.jp
Russian Federation, 7 ul. Sorge, Rostov-on-Don, 344060
T. Akitsu
Department of Chemistry, Faculty of Science, Tokyo University of Science
Email: akitsu@rs.kagu.tus.ac.jp
Japan, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601
Y. Tsunoda
Department of Chemistry, Faculty of Science, Tokyo University of Science
Email: akitsu@rs.kagu.tus.ac.jp
Japan, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601
I. N. Shcherbakov
Southern Federal University
Email: akitsu@rs.kagu.tus.ac.jp
Russian Federation, 7 ul. Sorge, Rostov-on-Don, 344060