Abstract
Magnetic, cost-effective, heterojunction SnO2/ZnFe2O4 nanocomposites were synthesized via. simple one-pot hydrothermal technique, and its phase formation, microstructure, morphology, chemical states and magnetism were examined by various characteristics. The photoconversion of mixed ligand involved cis-[CoIII(en)2(Im)Cl]Cl2 by SnO2/ZnFe2O4 nanocomposite showed efficient catalytic activity compared to the bare SnO2 and ZnFe2O4 nanoparticles under the wavelength of 254 nm and 365 nm in neat water and binary solvents system. SnO2/ZnFe2O4 heterojunction photocatalyst showed enhanced electron donor–acceptor capacitance and diminished the recombination of electron–hole (e−/h+) pairs and efficient generation of photogenerated reactive species. The rate constant (k) of SnO2/ZnFe2O4 (0.0540 s−1) is higher than that of the SnO2 (0.0160 s−1) and ZnFe2O4 (0.157 s−1) in H2O/PriOH (70:30%) than in remain solvents system in catalytic conversion of Co(III)/(II) system. The photoactive mechanism of Co(III) complex by SnO2/ZnFe2O4 nanocomposite and its corresponding bare nanoparticles were discussed in detail.
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The data support of current findings is available from the corresponding author on reasonable request.
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Acknowledgements
The authors would like to thank Central Instrumentation Facility (CIF), Pondicherry University, for providing instrumental facilities.
Funding
KA records thanks to the Council of Scientific and Industrial Research-HRDG (EMR Division, No. 01(2953)/18/EMR-II/1.5.2018), New Delhi, for financial support through a major research project.
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DV designed the project, laboratory work, characterization, write-up and revised manuscript. RS assisted photodegradation experiments. KA supervised the work.
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10854_2022_8879_MOESM1_ESM.docx
Supplementary data of TEM images of SnO2 and ZnFe2O4 nanoparticles. FT-IR spectra of nanocomposites and its bare components. Life-time analysis, M-H loop curve parameters, The rate constant of surface removal of various adsorbents. Time repetitive scan spectra of photodegradation of complex by catalysts under UV light irradiation (λ= 254 nm & 365 nm) in various solvent medium at room temperature. Co(II) confirmation analysis by Kittson’s method. Supplementary file1 (DOCX 23305 kb)
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Venkatesh, D., Silambarasan, R. & Anbalagan, K. Scavenging solvent-mediated photocatalytic conversion of Co(III) to Co(II) by synergistic interaction of SnO2/ZnFe2O4 nanocomposites under ultraviolet illumination. J Mater Sci: Mater Electron 33, 20678–20695 (2022). https://doi.org/10.1007/s10854-022-08879-2
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DOI: https://doi.org/10.1007/s10854-022-08879-2