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Dhanalakshmi R, Giridharan NV, Denardin JC. Magnetic Field-Assisted Photocatalytic Degradation of Organic Pollutants over Bi 1-xR xFeO 3 (R = Ce, Tb; x = 0.00, 0.05, 0.10 and 0.15) Nanostructures. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4079. [PMID: 34361272 PMCID: PMC8347960 DOI: 10.3390/ma14154079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 07/14/2021] [Accepted: 07/20/2021] [Indexed: 11/16/2022]
Abstract
Magnetic-field-accelerated photocatalytic degradation of the phenol red (PR) as a model organic pollutant was studied using rare-earth elements modified BiFeO3 (Bi1-xRxFeO3 (R = Ce, Tb; x = 0.0, 0.05, 0.10 and 0.15); BFO: RE) nanostructures. The nanostructures were prepared via the hydrothermal process and their morphological, structural, functional, optical and magnetic features were investigated in detail. The effect of magnetic fields (MFs) on photocatalysis were examined by applying the different MFs under visible light irradiation. The enhanced photodegradation efficiencies were achieved by increasing the MF up to 0.5T and reduced at 0.7T for the compositions x = 0.10 in both Ce and Tb substituted BFO. Further, mineralization efficiencies of PR, reproducibility of MF-assisted photocatalysis, stability and recyclability of BFO: RE nanostructures were also tested.
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Affiliation(s)
- Radhalayam Dhanalakshmi
- Physics Department and CEDENNA, University of Santiago of Chile (USACH), Santiago 9170124, Chile
| | - Nambi Venkatesan Giridharan
- Advanced Functional Materials Laboratory, Department of Physics, National Institute of Technology, Tiruchirappalli 620015, TN, India;
| | - Juliano C. Denardin
- Physics Department and CEDENNA, University of Santiago of Chile (USACH), Santiago 9170124, Chile
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Verkhovlyuk VN, Fedotov KY, Anisimov OA. Room temperature optically detected magnetic resonance (photoluminescence detected magnetic resonance) of radical ion pairs induced by vacuum ultraviolet in thin polymeric films. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:053118. [PMID: 27250403 DOI: 10.1063/1.4949493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A setup for recording optically detected electron paramagnetic resonance spectra of radical ions involved in geminate recombination and generated by vacuum ultraviolet is described. The setup allows registration of EPR spectra from short-lived radical ions in polymeric films at room temperature by recombination fluorescence modulated by a resonance microwave field.
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Affiliation(s)
- V N Verkhovlyuk
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk 630090, Russia
| | - K Yu Fedotov
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk 630090, Russia
| | - O A Anisimov
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk 630090, Russia
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Yakunin IN, Berdinskii VL. The chemical zeno effect in exchange-bounded radical pairs: 2. Singlet and random radical pairs. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2010. [DOI: 10.1134/s1990793110030048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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BROCKLEHURST BRIAN. Simulation of magnetic field effects: resonances due to g value differences in radical pairs. Mol Phys 2009. [DOI: 10.1080/00268979909482961] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- BRIAN BROCKLEHURST
- a Chemistry Department , The University of Sheffield , Sheffield , S3 7HF , UK
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Batchelor S, Mclauchlan K, Shkrob I. Reaction yield detected magnetic resonance in exciplex systems. Mol Phys 2007. [DOI: 10.1080/00268979200100391] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bagryansky VA, Ivanov KL, Borovkov VI, Lukzen NN, Molin YN. Spin evolution of radical pair with radical containing two groups of equivalent magnetic nuclei. J Chem Phys 2005; 122:224503. [PMID: 15974687 DOI: 10.1063/1.1901661] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Analytical solution is obtained for time-resolved magnetic field effects (TR-MFE) on recombination fluorescence of radical-ion pair (RIP) containing radical ion with two groups of magnetically equivalent nuclei. The present theoretical approach is applied to three experimental systems: RIPs containing radical cations of 2,3-dimethylbutane, 2,2,6,6-tetramethylpiperidine, or diisopropylamine and radical anion of p-terphenyl-d14 in nonpolar alkane solutions. Good agreement between theory and experiment is found for all the three systems, hyperfine coupling constants of radical cations are obtained by fitting the experimental TR-MFE traces. The potential of the TR-MFE technique for studying radical ions with nonequivalent nuclei is discussed in detail. The wide applicability of the theoretical model and the experimental technique make them useful for studying short-lived radical species that are often beyond the reach of the conventional electron paramagnetic resonance spectroscopy.
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Affiliation(s)
- V A Bagryansky
- Institute of Chemical Kinetics & Combustion, Novosibirsk 630090, Russia
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Molin YN. Spin oscillations as a new tool to study recombining radical ion pairs. MENDELEEV COMMUNICATIONS 2004. [DOI: 10.1070/mc2004v014n03abeh001933] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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BAGRYANSKY VA, BOROVKOV VI, MOLIN YN. Singlet—triplet oscillations of spin-correlated radical pairs due to the Larmor precession in low magnetic fields. Mol Phys 2002. [DOI: 10.1080/00268970110109484] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Gorelik VR, Maeda K, Yashiro H, Murai H. Microwave-Induced Quantum Beats in Micellized Radical Pairs under Spin-Locking Conditions. J Phys Chem A 2001. [DOI: 10.1021/jp0109628] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vitaly R. Gorelik
- Department of Chemistry, Graduated School of Science, Tohoku University, Sendai, 980-8578, Japan
| | - Kiminori Maeda
- Department of Chemistry, Graduated School of Science, Tohoku University, Sendai, 980-8578, Japan
| | - Haruhiko Yashiro
- Department of Chemistry, Graduated School of Science, Tohoku University, Sendai, 980-8578, Japan
| | - Hisao Murai
- Department of Chemistry, Graduated School of Science, Tohoku University, Sendai, 980-8578, Japan
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Molin Y. Radiation chemistry under magnetic fields. Spin coherence effects. RADIATION CHEMISTRY - PRESENT STATUS AND FUTURE TRENDS 2001. [DOI: 10.1016/s0167-6881(01)80006-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Bagryansky V, Usov O, Borovkov V, Kobzeva T, Molin Y. Quantum beats in recombination of spin-correlated radical ion pairs with equivalent protons. Chem Phys 2000. [DOI: 10.1016/s0301-0104(00)00078-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Bolton CE, Green NJB. Spin Effects on Spur Kinetics. 5. Modeling of Coherent Phenomena. J Phys Chem A 1999. [DOI: 10.1021/jp984212i] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Charlotte E. Bolton
- Department of Chemistry, King's College London, Strand, London WC2R 2LS, U.K
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Anishchik S, Borovkov V, Ivannikov V, Shebolaev I, Chernousov Y, Lukzen N, Anisimov O, Molin Y. Microwave field effects on the time dependence of recombination fluorescence from non-polar solutions. Chem Phys 1999. [DOI: 10.1016/s0301-0104(99)00021-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Bagryansky V, Borovkov V, Molin Y, Egorov M, Nefedov O. Quantum beats in the recombination fluorescence of radical ion pairs caused by the hyperfine coupling in radical anions. Chem Phys Lett 1998. [DOI: 10.1016/s0009-2614(98)00956-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Gilch P, Pollinger-Dammer F, Musewald C, Michel-Beyerle ME, Steiner UE. Magnetic field effect on picosecond electron transfer. Science 1998; 281:982-4. [PMID: 9703512 DOI: 10.1126/science.281.5379.982] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The recombination dynamics of a transition metal redox system monitored by femtosecond pump-probe spectroscopy are shown to be sensitive to high magnetic fields at times shorter than 10 picoseconds. The effect, based on coherent population beats of different spin states, is quantitatively accounted for and allows direct access to spin relaxation rates far beyond the time resolution of the fastest electron paramagnetic resonance technique. The presence of this ultrafast magnetic field effect helps in understanding complex reaction schemes in transition metal chemistry, which occur in a wide range of fields, such as bioinorganic chemistry and catalysis.
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Affiliation(s)
- P Gilch
- P. Gilch, F. Pollinger-Dammer, C. Musewald, M. E. Michel-Beyerle, Institut fur Physikalische und Theoretische Chemie, Technische Universitat Munchen, D-85748 Garching, Germany. U. E. Steiner, Fakultat fur Chemie, Universitat Konstanz
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Tadjikov B, Astashkin A, Sakaguchi Y. Quantum beats of the reaction yield induced by a pulsed microwave field. Chem Phys Lett 1998. [DOI: 10.1016/s0009-2614(97)01350-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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17
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Usov OM, Stass DV, Tadjikov BM, Molin YN. Highly Mobile Solvent Holes in Viscous Squalane Solutions As Detected by Quantum Beats and MARY Spectroscopy Techniques. J Phys Chem A 1997. [DOI: 10.1021/jp970852u] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Oleg M. Usov
- Institute of Chemical Kinetics and Combustion, Novosibirsk 630090, Russia
| | - Dmitrii V. Stass
- Institute of Chemical Kinetics and Combustion, Novosibirsk 630090, Russia
| | - Boris M. Tadjikov
- Institute of Chemical Kinetics and Combustion, Novosibirsk 630090, Russia
| | - Yuri N. Molin
- Institute of Chemical Kinetics and Combustion, Novosibirsk 630090, Russia
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Usov O, Grigoryants V, Tadjikov B, Molin Y. Determination of a fraction of spin-correlated radical ion pairs in irradiated alkanes by quantum oscillation technique. Radiat Phys Chem Oxf Engl 1993 1997. [DOI: 10.1016/s0969-806x(96)00141-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Bagryansky VA, Borovkov VI, Molin YN, Egorov MP, Nefedov OM. Quantum beats in the recombination of radical ion pairs caused by hyperfine interaction in radical anions. MENDELEEV COMMUNICATIONS 1997. [DOI: 10.1070/mc1997v007n04abeh000810] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Influence of the exchange interaction on quantum beats in the recombination luminescence of radical ion pairs in media of various polarities. Chem Phys Lett 1996. [DOI: 10.1016/0009-2614(96)00925-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Bolton CE, Green NJB. Spin Effects on Spur Kinetics. 4. Incorporating a Realistic Exchange Interaction. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp953049d] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Charlotte E. Bolton
- Department of Chemistry, King's College London, Strand, London WC2R 2LS, U.K
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24
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Phase shift of quantum oscillations in the recombination luminescence of spin-correlated radical ion pairs. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(95)01115-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Lukzen N, Morozov V, Sagdeev R. The influence of 13C nuclei on quantum beats in the recombination luminescence of radical ion pairs undergoing ion-molecular charge transfer. Chem Phys 1995. [DOI: 10.1016/0301-0104(95)00216-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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26
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27
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Kubarev S, Kubareva I, Ermakova E. The calculation of magnetic effects and RYDMR spectra for intermediate short-lived complexes of paramagnetic species. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(95)00158-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Molin Y, Salikhov K. Spin exchange interaction as a possible source of oscillations in recombination of spin-correlated radical pairs. Chem Phys Lett 1993. [DOI: 10.1016/0009-2614(93)87095-k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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30
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Morozov V, Antzutkin O, Koptyug A, Doktorov A. Multiquantum resonances in low-field optically detected ESR of radical-ion pairs. Mol Phys 1991. [DOI: 10.1080/00268979100101361] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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33
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Saik V, Anisimov O, Koptyug A, Molin Y. Quantum beats in singlet-triplet transitions of radical pairs induced by a radio-frequency field. Chem Phys Lett 1990. [DOI: 10.1016/0009-2614(90)85419-d] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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34
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Goldstein RA, Boxer SG. The effect of very high magnetic fields on the delayed fluorescence from oriented bacterial reaction centers. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1989. [DOI: 10.1016/s0005-2728(89)80010-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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