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Gupta R, Gamare J, Sahu M, Pandey K, Gupta SK. Electrochemical and thermodynamic insights on actinide type (IV) deep eutectic solvent. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115550] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Beitollahi H, Nekooei S, Torkzadeh-Mahani M. Amperometric immunosensor for prolactin hormone measurement using antibodies loaded on a nano-Au monolayer modified ionic liquid carbon paste electrode. Talanta 2018; 188:701-707. [DOI: 10.1016/j.talanta.2018.06.044] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 06/09/2018] [Accepted: 06/12/2018] [Indexed: 01/16/2023]
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Gupta SK, Reghukumar C, Pathak N, Sudarshan K, Tyagi D, Mohapatra M, Pujari P, Kadam R. Speciation of uranium and doping induced defects in Gd1.98U0.02Zr2O7: Photoluminescence, X-ray photoelectron and positron annihilation lifetime spectroscopy. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2016.11.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sanyal K, Pathak N, Yadav AK, Kanrar B, Kadam RM, Jha SN, Bhattacharya D, Misra NL. Investigations on local structures in new Bi2-2xLa2xUO6 (x = 0-0.05) solid solutions: a combined XRD, EXAFS, PL and EPR study. Dalton Trans 2016; 45:7650-64. [PMID: 27052597 DOI: 10.1039/c6dt00400h] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
La doped Bi2UO6 solid solutions of the general formula Bi2-2xLa2xUO6 (x = 0-0.05) were prepared by the solid state reaction of Bi2O3, La(OH)3 and U3O8 in a stoichiometric ratio. These solid solutions were characterized by X-ray diffraction, Extended X-ray Absorption Fine Structure (EXAFS) and X-ray Absorption Near Edge Spectroscopy (XANES) studies. It was found that La goes to the Bi sites of the Bi2UO6 lattice during the formation of these solid solutions. For further confirmation, a photoluminescence (PL) study on an iso-structural Bi1.96Eu0.04UO6 was performed, and this supports the above observation. The solid solutions were also probed by EPR studies. The PL and EPR studies suggest that there are doping induced oxygen vacancies in these solid solutions.
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Affiliation(s)
- Kaushik Sanyal
- Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. and Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
| | - Nimai Pathak
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India and Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
| | - Ashok Kumar Yadav
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India and Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
| | - Buddhadev Kanrar
- Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. and Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
| | - Ramakant Mahadeo Kadam
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India and Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
| | - Shambhu Nath Jha
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
| | - Dibyendu Bhattacharya
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India and Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
| | - N L Misra
- Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. and Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
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Gupta SK, Dhobale A, Kumar M, Godbole S, Natarajan V. Oxidation state determination of uranium in various uranium oxides: Photoacoustic spectroscopy complimented by photoluminescence studies. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.12.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Gupta SK, Pathak N, Gupta R, Thulasidas S, Natarajan V. Probing the oxidation state and coordination geometry of uranium ion in SrZrO3 perovskite. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.04.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Gupta SK, Ghosh PS, Pathak N, Arya A, Natarajan V. Understanding the local environment of Sm3+ in doped SrZrO3 and energy transfer mechanism using time-resolved luminescence: a combined theoretical and experimental approach. RSC Adv 2014. [DOI: 10.1039/c4ra04262j] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A combined experimental and theoretical study on the photoluminescence (PL) properties of strontium zirconate (SZ) and Sm3+ doped SZ nanostructures is presented in this work.
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Affiliation(s)
- Santosh K. Gupta
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085, India
| | - P. S. Ghosh
- Materials Science Division
- Bhabha Atomic Research Centre
- Mumbai-400085, India
| | - Nimai Pathak
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085, India
| | - A. Arya
- Materials Science Division
- Bhabha Atomic Research Centre
- Mumbai-400085, India
| | - V. Natarajan
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085, India
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