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Richter J, Pietsch T, Ruck M. Cobalt Deposition from Ionothermally Dissolved Cobalt Oxides. ChemSusChem 2023; 16:e202300090. [PMID: 36872889 DOI: 10.1002/cssc.202300090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/02/2023] [Accepted: 03/03/2023] [Indexed: 05/06/2023]
Abstract
Owing to the environmental problems of numerous metal production processes, there is a growing need for more energy-efficient approaches. Cobalt is considered a strategic element that is extracted not only from ores but also from spent Li-ion batteries. One promising new approach is ionometallurgy, which is the extraction of metal oxides by ionic liquids (ILs). This study concerns new investigations into ionometallurgical processing of CoO, Co3 O4 , and LiCoO2 in the IL betainium bis(trifluoromethylsulfonyl)imide, [Hbet][NTf2 ]. Three crystal structures of cobalt-betaine complex compounds and combined spectroscopic and diffraction studies provide insights into the dissolution process. In addition, an optimized dissolution procedure for metal oxides is presented, avoiding the previously reported decomposition of the IL. Subsequent cobalt electrodeposition is only possible from cationic complex species, highlighting the importance of a thorough understanding of the complex equilibria. The presented method is also compared to other recently reported approaches.
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Affiliation(s)
- Janine Richter
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Tobias Pietsch
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
- Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany
| | - Michael Ruck
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
- Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany
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Chizhik S, Sidelnikov A, Zakharov B, Naumov P, Boldyreva E. Quantification of photoinduced bending of dynamic molecular crystals: from macroscopic strain to kinetic constants and activation energies. Chem Sci 2018; 9:2319-2335. [PMID: 29719705 PMCID: PMC5903420 DOI: 10.1039/c7sc04863g] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Accepted: 01/19/2018] [Indexed: 01/10/2023] Open
Abstract
Photomechanically reconfigurable elastic single crystals are the key elements for contactless, timely controllable and spatially resolved transduction of light into work from the nanoscale to the macroscale. The deformation in such single-crystal actuators is observed and usually attributed to anisotropy in their structure induced by the external stimulus. Yet, the actual intrinsic and external factors that affect the mechanical response remain poorly understood, and the lack of rigorous models stands as the main impediment towards benchmarking of these materials against each other and with much better developed soft actuators based on polymers, liquid crystals and elastomers. Here, experimental approaches for precise measurement of macroscopic strain in a single crystal bent by means of a solid-state transformation induced by light are developed and used to extract the related temperature-dependent kinetic parameters. The experimental results are compared against an overarching mathematical model based on the combined consideration of light transport, chemical transformation and elastic deformation that does not require fitting of any empirical information. It is demonstrated that for a thermally reversible photoreactive bending crystal, the kinetic constants of the forward (photochemical) reaction and the reverse (thermal) reaction, as well as their temperature dependence, can be extracted with high accuracy. The improved kinematic model of crystal bending takes into account the feedback effect, which is often neglected but becomes increasingly important at the late stages of the photochemical reaction in a single crystal. The results provide the most rigorous and exact mathematical description of photoinduced bending of a single crystal to date.
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Affiliation(s)
- Stanislav Chizhik
- Institute of Solid State Chemistry and Mechanochemistry , Siberian Branch of Russian Academy of Sciences , ul. Kutateladze, 18 , Novosibirsk 620128 , Russian Federation .
- Novosibirsk State University , ul. Pirogova, 2 , Novosibirsk 630090 , Russian Federation
| | - Anatoly Sidelnikov
- Institute of Solid State Chemistry and Mechanochemistry , Siberian Branch of Russian Academy of Sciences , ul. Kutateladze, 18 , Novosibirsk 620128 , Russian Federation .
- Novosibirsk State University , ul. Pirogova, 2 , Novosibirsk 630090 , Russian Federation
| | - Boris Zakharov
- Institute of Solid State Chemistry and Mechanochemistry , Siberian Branch of Russian Academy of Sciences , ul. Kutateladze, 18 , Novosibirsk 620128 , Russian Federation .
- Novosibirsk State University , ul. Pirogova, 2 , Novosibirsk 630090 , Russian Federation
| | - Panče Naumov
- New York University Abu Dhabi , P.O. Box 129188 , Abu Dhabi , United Arab Emirates
| | - Elena Boldyreva
- Institute of Solid State Chemistry and Mechanochemistry , Siberian Branch of Russian Academy of Sciences , ul. Kutateladze, 18 , Novosibirsk 620128 , Russian Federation .
- Novosibirsk State University , ul. Pirogova, 2 , Novosibirsk 630090 , Russian Federation
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Jyotsna T, Kumar CV, Jockusch S, Turro NJ. Steady-state and time-resolved studies of the photocleavage of lysozyme by Co(III) complexes. Langmuir 2010; 26:1966-1972. [PMID: 19810686 DOI: 10.1021/la902611j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Steady-state and time-resolved studies of site-selective photocleavage of lysozyme by cobalt(III) complexes [Co(NH(3))(5)Br](2+) and ([Co(NH(3))(4)CO(3)](+) are reported. Photocleavage resulted in two fragments of molecular masses approximately 10.5 kDa and approximately 3.5 kDa, and the yield increased (8-33%) with irradiation time (0.16-0.8 h) as well as with the metal complex concentration (0.1-5 mM). The reaction proceeded to a significant extent even when nearly stoichiometric amounts of the reagents were used. Photocleavage was effective at wavelengths ranging from 310 to 390 nm, and cleavage was inhibited by the addition of selected metal ions such as Gd(III) at moderate concentrations (2 mM). Gd(III) is known to bind at Asp52/Glu35 residues on lysozyme, and these residues are located at the enzyme active site. Current and previous studies suggest that Co(III) metal complexes bind at this site on lysozyme. Consistent with this hypothesis, [Co(NH(3))(4)CO(3)](+) (8 mM) inhibited lysozyme activity by 67%. Laser flash photolysis studies show that excitation of the metal complexes [Co(NH(3))(5)Br](2+) and ([Co(NH(3))(4)CO(3)](+) (308 nm, 20 ns pulse width) resulted in the corresponding ligand-derived radical intermediates. For example, photoexcitation of an aqueous solution of [Co(NH(3))(5)Br](2+) at 308 nm resulted in the formation of Br(2)(-*). When the excitation was carried out in the presence of lysozyme, Br(2)(-*) was quenched with a bimolecular rate constant of 1.4 x 10(9) M(-1) s(-1). Quenching resulted in protein-derived radicals (Trp(+*) and Tyr(+*)), as identified by their characteristic known transient absorption bands. Steady-state studies correlated with the time-resolved data, and taken together, these illustrated the reactivities of Co(III) metal complexes to direct protein photocleavage with high selectivity.
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Affiliation(s)
- Thota Jyotsna
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, USA
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Jyotsna T, Bandara K, Kumar CV. Inorganic photochemical protein scissors: photocleavage of lysozyme by Co(III) complexes. Photochem Photobiol Sci 2008; 7:1531-9. [DOI: 10.1039/b810422k] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Rowan NS, Storm CB, Hunt JB. Synthesis and further characterization of potassium (ethylenediamine)dicarbonatocobaltate(III) and the tetraaquo(ethylenediamine)cobalt(III) ion. Inorg Chem 2002. [DOI: 10.1021/ic50188a034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chen Y, Christensen D, Sørensen G, Nielsen OF, Pedersen E. The skeletal vibrational spectra and metal—ligand force constants of cobalt(III) ammine complexes. J Mol Struct 1993. [DOI: 10.1016/0022-2860(93)80283-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kuo KW, Miller WV, Madan SK. Synthesis and characterization of some octahedral cobalt(III) complexes with β, β′, β″-(triaminotriethylamine). ACTA ACUST UNITED AC 1973. [DOI: 10.1016/0022-1902(73)80466-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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