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Shear viscosities and thermal conductivity of NaF-AlF3 molten salts: A non-equilibrium molecular dynamics study. J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2020.109675] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Pedone A, Chen X, Hill RG, Karpukhina N. Molecular Dynamics Investigation of Halide-Containing Phospho-Silicate Bioactive Glasses. J Phys Chem B 2018; 122:2940-2948. [DOI: 10.1021/acs.jpcb.8b00547] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alfonso Pedone
- Dipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy
| | - Xiaojing Chen
- Xiangya Stomatological Hospital & School of Stomatology, Central South University, Changsha, Hunan 410078, P.R. China
- Dental Physical Sciences, Institute of Dentistry, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Robert G. Hill
- Dental Physical Sciences, Institute of Dentistry, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Natalia Karpukhina
- Dental Physical Sciences, Institute of Dentistry, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
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Lv X, Xu Z, Li J, Chen J, Liu Q. Molecular dynamics investigation on structural and transport properties of Na3AlF6–Al2O3 molten salt. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.05.064] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lv X, Xu Z, Li J, Chen J, Liu Q. Theoretical investigation on local structure and transport properties of NaFAlF3 molten salts under electric field environment. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.03.076] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Pedone A, Muniz-Miranda F, Tilocca A, Menziani MC. The antioxidant properties of Ce-containing bioactive glass nanoparticles explained by Molecular Dynamics simulations. BIOMEDICAL GLASSES 2016. [DOI: 10.1515/bglass-2016-0003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractMolecular dynamics simulations of two glass nanoparticles with composition 25Na2O·25CaO 50SiO2 mol% (Ce-K NP) and 46.1SiO2·24.4Na2O·26.9CaO· 2.6P2O5 mol.% (Ce-BG NP) doped with 3.6 mol% of CeO2 have been carried out in order to explain the enhanced antioxidant properties of the former glass with respect to the latter.The present models show that the different catalase mimetic activity of the two NPs is related to the Ce3+/Ce4+ ratio exposed at their surface. In fact, this ratio is about 3.5 and 13 in the bulk and at the surface of the Ce-BG NP, and 1.0 and 2.1 in the bulk and at the surface of the Ce-K NPs, respectively. Since both oxidation states are necessary for the catalysis of the dismutation reaction of hydrogen peroxides, NPs with a very high Ce3+/Ce4+ ratio possess poorer antioxidant properties.Moreover, our simulations reveal that the already low silicate connectivity found in the bulk glasses examined here is further reduced on the nanoparticle surface, whereas the Na+/Ca2+ ratio rapidly increases. Sodium, calcium and cerium sites in proximity of the surface are found to be under-coordinated, prone to quickly react with water present in physiological environments, thus accelerating the glass biodegradation
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Nicolini V, Gambuzzi E, Malavasi G, Menabue L, Menziani MC, Lusvardi G, Pedone A, Benedetti F, Luches P, D’Addato S, Valeri S. Evidence of Catalase Mimetic Activity in Ce3+/Ce4+ Doped Bioactive Glasses. J Phys Chem B 2015; 119:4009-19. [DOI: 10.1021/jp511737b] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Valentina Nicolini
- Department
of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 183, 41125 Modena, Italy
| | - Elisa Gambuzzi
- Department
of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 183, 41125 Modena, Italy
| | - Gianluca Malavasi
- Department
of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 183, 41125 Modena, Italy
| | - Ledi Menabue
- Department
of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 183, 41125 Modena, Italy
| | - Maria Cristina Menziani
- Department
of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 183, 41125 Modena, Italy
| | - Gigliola Lusvardi
- Department
of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 183, 41125 Modena, Italy
| | - Alfonso Pedone
- Department
of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 183, 41125 Modena, Italy
| | - Francesco Benedetti
- Department
of Physical, Information and Mathematical Sciences, University of Modena and Reggio Emilia, Via Campi 213/a, 41125 Modena, Italy
- Istituto Nanoscienze−CNR, Via Campi 213/a, 41125 Modena, Italy
| | - Paola Luches
- Istituto Nanoscienze−CNR, Via Campi 213/a, 41125 Modena, Italy
| | - Sergio D’Addato
- Department
of Physical, Information and Mathematical Sciences, University of Modena and Reggio Emilia, Via Campi 213/a, 41125 Modena, Italy
- Istituto Nanoscienze−CNR, Via Campi 213/a, 41125 Modena, Italy
| | - Sergio Valeri
- Department
of Physical, Information and Mathematical Sciences, University of Modena and Reggio Emilia, Via Campi 213/a, 41125 Modena, Italy
- Istituto Nanoscienze−CNR, Via Campi 213/a, 41125 Modena, Italy
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