1
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Xu X, Qi C, Aretxabaleta XM, Ma C, Spagnoli D, Manzano H. The initial stages of cement hydration at the molecular level. Nat Commun 2024; 15:2731. [PMID: 38553480 PMCID: PMC10980771 DOI: 10.1038/s41467-024-46962-w] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 03/15/2024] [Indexed: 04/02/2024] Open
Abstract
Cement hydration is crucial for the strength development of cement-based materials; however, the mechanism that underlies this complex reaction remains poorly understood at the molecular level. An in-depth understanding of cement hydration is required for the development of environmentally friendly cement and consequently the reduction of carbon emissions in the cement industry. Here, we use molecular dynamics simulations with a reactive force field to investigate the initial hydration processes of tricalcium silicate (C3S) and dicalcium silicate (C2S) up to 40 ns. Our simulations provide theoretical support for the rapid initial hydration of C3S compared to C2S at the molecular level. The dissolution pathways of calcium ions in C3S and C2S are revealed, showing that, two dissolution processes are required for the complete dissolution of calcium ions in C3S. Our findings promote the understanding of the calcium dissolution stage and serve as a valuable reference for the investigation of the initial cement hydration.
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Affiliation(s)
- Xinhang Xu
- School of Resources and Safety Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Chongchong Qi
- School of Resources and Safety Engineering, Central South University, Changsha, Hunan, 410083, China.
- School of Molecular Sciences, University of Western Australia, Perth, WA, 6009, Australia.
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China.
| | - Xabier M Aretxabaleta
- Department of Physics, Faculty of Science and Technology, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, Leioa, Bizkaia, 48940, Spain
| | - Chundi Ma
- School of Resources and Safety Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Dino Spagnoli
- School of Molecular Sciences, University of Western Australia, Perth, WA, 6009, Australia
| | - Hegoi Manzano
- Department of Physics, Faculty of Science and Technology, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, Leioa, Bizkaia, 48940, Spain
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2
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Aretxabaleta XM, López-Zorrilla J, Etxebarria I, Manzano H. Multi-step nucleation pathway of C-S-H during cement hydration from atomistic simulations. Nat Commun 2023; 14:7979. [PMID: 38042823 PMCID: PMC10693585 DOI: 10.1038/s41467-023-43500-y] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 11/10/2023] [Indexed: 12/04/2023] Open
Abstract
The Calcium Silicate Hydrate (C-S-H) nucleation is a crucial step during cement hydration and determines to a great extent the rheology, microstructure, and properties of the cement paste. Recent evidence indicates that the C-S-H nucleation involves at least two steps, yet the underlying atomic scale mechanism, the nature of the primary particles and their stability, or how they merge/aggregate to form larger structures is unknown. In this work, we use atomistic simulation methods, specifically DFT, evolutionary algorithms (EA), and Molecular Dynamics (MD), to investigate the structure and formation of C-S-H primary particles (PPs) from the ions in solution, and then discuss a possible formation pathway for the C-S-H nucleation. Our simulations indicate that even for small sizes the most stable clusters encode C-S-H structural motifs, and we identified a C4S4H2 cluster candidate to be the C-S-H basic building block. We suggest a formation path in which small clusters formed by silicate dimers merge into large elongated aggregates. Upon dehydration, the C-S-H basic building blocks can be formed within the aggregates, and eventually crystallize.
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Affiliation(s)
- Xabier M Aretxabaleta
- Fisika saila, Euskal Herriko Unibertsitatea UPV/EHU, Sarriena Auzoa z/g, 48940, Leioa, Basque Country, Spain.
| | - Jon López-Zorrilla
- Fisika saila, Euskal Herriko Unibertsitatea UPV/EHU, Sarriena Auzoa z/g, 48940, Leioa, Basque Country, Spain
| | - Iñigo Etxebarria
- Fisika saila, Euskal Herriko Unibertsitatea UPV/EHU, Sarriena Auzoa z/g, 48940, Leioa, Basque Country, Spain
- EHU Quantum Center, Euskal Herriko Unibertsitatea, UPV/EHU, Leioa, Spain
| | - Hegoi Manzano
- Fisika saila, Euskal Herriko Unibertsitatea UPV/EHU, Sarriena Auzoa z/g, 48940, Leioa, Basque Country, Spain.
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3
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Fortuin BA, Otegi J, López Del Amo JM, Peña SR, Meabe L, Manzano H, Martínez-Ibañez M, Carrasco J. Synergistic theoretical and experimental study on the ion dynamics of bis(trifluoromethanesulfonyl)imide-based alkali metal salts for solid polymer electrolytes. Phys Chem Chem Phys 2023; 25:25038-25054. [PMID: 37698851 DOI: 10.1039/d3cp02989a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
Model validation of a well-known class of solid polymer electrolyte (SPE) is utilized to predict the ionic structure and ion dynamics of alternative alkali metal ions, leading to advancements in Na-, K-, and Cs-based SPEs for solid-state alkali metal batteries. A comprehensive study based on molecular dynamics (MD) is conducted to simulate ion coordination and the ion transport properties of poly(ethylene oxide) (PEO) with lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt across various LiTFSI concentrations. Through validation of the MD simulation results with experimental techniques, we gain a deeper understanding of the ionic structure and dynamics in the PEO/LiTFSI system. This computational approach is then extended to predict ion coordination and transport properties of alternative alkali metal ions. The ionic structure in PEO/LiTFSI is significantly influenced by the LiTFSI concentration, resulting in different lithium-ion transport mechanisms for highly concentrated or diluted systems. Substituting lithium with sodium, potassium, and cesium reveals a weaker cation-PEO coordination for the larger cesium-ion. However, sodium-ion based SPEs exhibit the highest cation transport number, indicating the crucial interplay between salt dissociation and cation-PEO coordination for achieving optimal performance in alkali metal SPEs.
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Affiliation(s)
- Brigette Althea Fortuin
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.
- Department of Physics, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain.
- ALISTORE-European Research Institute, CNRS FR 3104, Hub de l'Energie, Rue Baudelocque, 80039 Amiens Cedex, France
| | - Jon Otegi
- Department of Physics, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain.
| | - Juan Miguel López Del Amo
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.
| | - Sergio Rodriguez Peña
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.
- Department of Physics, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain.
| | - Leire Meabe
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.
| | - Hegoi Manzano
- Department of Physics, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain.
| | - María Martínez-Ibañez
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.
| | - Javier Carrasco
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.
- IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
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4
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López-Zorrilla J, Aretxabaleta XM, Yeu IW, Etxebarria I, Manzano H, Artrith N. ænet-PyTorch: A GPU-supported implementation for machine learning atomic potentials training. J Chem Phys 2023; 158:2885330. [PMID: 37096855 DOI: 10.1063/5.0146803] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 04/04/2023] [Indexed: 04/26/2023] Open
Abstract
In this work, we present ænet-PyTorch, a PyTorch-based implementation for training artificial neural network-based machine learning interatomic potentials. Developed as an extension of the atomic energy network (ænet), ænet-PyTorch provides access to all the tools included in ænet for the application and usage of the potentials. The package has been designed as an alternative to the internal training capabilities of ænet, leveraging the power of graphic processing units to facilitate direct training on forces in addition to energies. This leads to a substantial reduction of the training time by one to two orders of magnitude compared to the central processing unit implementation, enabling direct training on forces for systems beyond small molecules. Here, we demonstrate the main features of ænet-PyTorch and show its performance on open databases. Our results show that training on all the force information within a dataset is not necessary, and including between 10% and 20% of the force information is sufficient to achieve optimally accurate interatomic potentials with the least computational resources.
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Affiliation(s)
- Jon López-Zorrilla
- Physics Department, University of the Basque Country (UPV/EHU), Leioa, Basque Country, Leioa, Spain
| | - Xabier M Aretxabaleta
- Physics Department, University of the Basque Country (UPV/EHU), Leioa, Basque Country, Leioa, Spain
| | - In Won Yeu
- Department of Chemical Engineering, Columbia University, New York, New York 10027, USA
| | - Iñigo Etxebarria
- Physics Department, University of the Basque Country (UPV/EHU), Leioa, Basque Country, Leioa, Spain
- EHU Quantum Center, University of the Basque Country (UPV/EHU), Basque Country, Leioa, Spain
| | - Hegoi Manzano
- Physics Department, University of the Basque Country (UPV/EHU), Leioa, Basque Country, Leioa, Spain
| | - Nongnuch Artrith
- Materials Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands
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5
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Fortuin B, Meabe L, Peña SR, Zhang Y, Qiao L, Etxabe J, Garcia L, Manzano H, Armand M, Martínez-Ibañez M, Carrasco J. Molecular-Level Insight into Charge Carrier Transport and Speciation in Solid Polymer Electrolytes by Chemically Tuning Both Polymer and Lithium Salt. J Phys Chem C Nanomater Interfaces 2023; 127:1955-1964. [PMID: 36761231 PMCID: PMC9900585 DOI: 10.1021/acs.jpcc.2c07032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/09/2023] [Indexed: 06/18/2023]
Abstract
The advent of Li-metal batteries has seen progress toward studies focused on the chemical modification of solid polymer electrolytes, involving tuning either polymer or Li salt properties to enhance the overall cell performance. This study encompasses chemically modifying simultaneously both polymer matrix and lithium salt by assessing ion coordination environments, ion transport mechanisms, and molecular speciation. First, commercially used lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt is taken as a reference, where F atoms become partially substituted by one or two H atoms in the -CF3 moieties of LiTFSI. These substitutions lead to the formation of lithium(difluoromethanesulfonyl)(trifluoromethanesulfonyl)imide (LiDFTFSI) and lithium bis(difluoromethanesulfonyl)imide (LiDFSI) salts. Both lithium salts promote anion immobilization and increase the lithium transference number. Second, we show that exchanging archetypal poly(ethylene oxide) (PEO) with poly(ε-caprolactone) (PCL) significantly changes charge carrier speciation. Studying the ionic structures of these polymer/Li salt combinations (LiTFSI, LiDFTFSI or LiDFSI with PEO or PCL) by combining molecular dynamics simulations and a range of experimental techniques, we provide atomistic insights to understand the solvation structure and synergistic effects that impact macroscopic properties, such as Li+ conductivity and transference number.
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Affiliation(s)
- Brigette
A. Fortuin
- Centre
for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, 01510Vitoria-Gasteiz, Spain
- Department
of Physics, University of the Basque Country
(UPV/EHU), 48940Leioa, Spain
| | - Leire Meabe
- Centre
for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, 01510Vitoria-Gasteiz, Spain
| | - Sergio Rodriguez Peña
- Centre
for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, 01510Vitoria-Gasteiz, Spain
- Department
of Physics, University of the Basque Country
(UPV/EHU), 48940Leioa, Spain
| | - Yan Zhang
- Centre
for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, 01510Vitoria-Gasteiz, Spain
| | - Lixin Qiao
- Centre
for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, 01510Vitoria-Gasteiz, Spain
| | - Julen Etxabe
- Centre
for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, 01510Vitoria-Gasteiz, Spain
| | - Lorena Garcia
- Centre
for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, 01510Vitoria-Gasteiz, Spain
| | - Hegoi Manzano
- Department
of Physics, University of the Basque Country
(UPV/EHU), 48940Leioa, Spain
| | - Michel Armand
- Centre
for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, 01510Vitoria-Gasteiz, Spain
| | - María Martínez-Ibañez
- Centre
for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, 01510Vitoria-Gasteiz, Spain
| | - Javier Carrasco
- Centre
for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, 01510Vitoria-Gasteiz, Spain
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6
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Qiao L, Rodriguez Peña S, Martínez-Ibañez M, Santiago A, Aldalur I, Lobato E, Sanchez-Diez E, Zhang Y, Manzano H, Zhu H, Forsyth M, Armand M, Carrasco J, Zhang H. Anion π-π Stacking for Improved Lithium Transport in Polymer Electrolytes. J Am Chem Soc 2022; 144:9806-9816. [PMID: 35638261 DOI: 10.1021/jacs.2c02260] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Polymer electrolytes (PEs) with excellent flexibility, processability, and good contact with lithium metal (Li°) anodes have attracted substantial attention in both academic and industrial settings. However, conventional poly(ethylene oxide) (PEO)-based PEs suffer from a low lithium-ion transference number (TLi+), leading to a notorious concentration gradient and internal cell polarization. Here, we report two kinds of highly lithium-ion conductive and solvent-free PEs using the benzene-based lithium salts, lithium (benzenesulfonyl)(trifluoromethanesulfonyl)imide (LiBTFSI) and lithium (2,4,6-triisopropylbenzenesulfonyl)(trifluoromethanesulfonyl)imide (LiTPBTFSI), which show significantly improved TLi+ and selective lithium-ion conductivity. Using molecular dynamics simulations, we pinpoint the strong π-π stacking interaction between pairs of benzene-based anions as the cause of this improvement. In addition, we show that Li°∥Li° and Li°∥LiFePO4 cells with the LiBTFSI/PEO electrolytes present enhanced cycling performance. By considering π-π stacking interactions as a new molecular-level design route of salts for electrolyte, this work provides an efficient and facile novel strategy for attaining highly selective lithium-ion conductive PEs.
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Affiliation(s)
- Lixin Qiao
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Álava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.,Department of Polymer Science and Technology, University of the Basque Country (UPV/EHU), M. de Lardizábal 3, 20018 San Sebastian, Spain
| | - Sergio Rodriguez Peña
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Álava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.,Department of Physics, University of the Basque Country (UPV/EHU), Barrio Sarriena, s/n, 48940 Leioa, Spain
| | - María Martínez-Ibañez
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Álava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Alexander Santiago
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Álava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Itziar Aldalur
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Álava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Elias Lobato
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Álava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Eduardo Sanchez-Diez
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Álava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Yan Zhang
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Álava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Hegoi Manzano
- Department of Physics, University of the Basque Country (UPV/EHU), Barrio Sarriena, s/n, 48940 Leioa, Spain
| | - Haijin Zhu
- ARC Centre of Excellence for Electromaterials Science (ACES), Institute for Frontier Materials (IFM), Deakin University, Geelong, Victoria 3220, Australia
| | - Maria Forsyth
- ARC Centre of Excellence for Electromaterials Science (ACES), Institute for Frontier Materials (IFM), Deakin University, Geelong, Victoria 3220, Australia.,Ikerbasque, Basque Foundation for Science, E-48011 Bilbao, Spain
| | - Michel Armand
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Álava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Javier Carrasco
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Álava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Heng Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, 430074 Wuhan, China
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7
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Gardeh MG, Kistanov AA, Nguyen H, Manzano H, Cao W, Kinnunen P. Exploring Mechanisms of Hydration and Carbonation of MgO and Mg(OH) 2 in Reactive Magnesium Oxide-Based Cements. J Phys Chem C Nanomater Interfaces 2022; 126:6196-6206. [PMID: 35449521 PMCID: PMC9014411 DOI: 10.1021/acs.jpcc.1c10590] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/16/2022] [Indexed: 06/14/2023]
Abstract
Reactive magnesium oxide (MgO)-based cement (RMC) can play a key role in carbon capture processes. However, knowledge on the driving forces that control the degree of carbonation and hydration and rate of reactions in this system remains limited. In this work, density functional theory-based simulations are used to investigate the physical nature of the reactions taking place during the fabrication of RMCs under ambient conditions. Parametric indicators such as adsorption energies, charge transfer, electron localization function, adsorption/dissociation energy barriers, and the mechanisms of interaction of H2O and CO2 molecules with MgO and brucite (Mg(OH)2) clusters are considered. The following hydration and carbonation interactions relevant to RMCs are evaluated: (i) carbonation of MgO, (ii) hydration of MgO, carbonation of hydrated MgO, (iii) carbonation of Mg(OH)2, (iv) hydration of Mg(OH)2, and (v) hydration of carbonated Mg(OH)2. A comparison of the energy barriers and reaction pathways of these mechanisms shows that the carbonation of MgO is hindered by the presence of H2O molecules, while the carbonation of Mg(OH)2 is hindered by the formation of initial carbonate and hydrate layers as well as presence of excessed H2O molecules. To compare these finding to bulk mineral surfaces, the interactions of the CO2 and H2O molecules with the MgO(001) and Mg(OH)2 (001) surfaces are studied. Therefore, this work presents deep insights into the physical nature of the reactions and the mechanisms involved in hydrated magnesium carbonates production that can be beneficial for its development.
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Affiliation(s)
- Mina Ghane Gardeh
- Fibre
and Particle Engineering Research Unit, University of Oulu, Pentti Kaiteran katu 1, 90014 Oulu, Finland
| | - Andrey A. Kistanov
- Nano
and Molecular Systems Research Unit, University
of Oulu, Pentti Kaiteran katu 1, 90014 Oulu, Finland
| | - Hoang Nguyen
- Fibre
and Particle Engineering Research Unit, University of Oulu, Pentti Kaiteran katu 1, 90014 Oulu, Finland
| | - Hegoi Manzano
- Departament
of Condensed Matter Physics, University
of the Basque Country (UPV/EHU), Barrio Sarriena, s/n, 48940 Leioa, Spain
| | - Wei Cao
- Nano
and Molecular Systems Research Unit, University
of Oulu, Pentti Kaiteran katu 1, 90014 Oulu, Finland
| | - Paivo Kinnunen
- Fibre
and Particle Engineering Research Unit, University of Oulu, Pentti Kaiteran katu 1, 90014 Oulu, Finland
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8
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Sheikholeslam SA, López-Zorrilla J, Manzano H, Pourtavakoli S, Ivanov A. Relationship between Atomic Structure, Composition, and Dielectric Constant in Zr-SiO 2 Glasses. ACS Omega 2021; 6:28561-28568. [PMID: 34746551 PMCID: PMC8567257 DOI: 10.1021/acsomega.1c02533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 10/12/2021] [Indexed: 06/13/2023]
Abstract
Computational methods, or computer-aided material design (CAMD), used for the analysis and design of materials have a relatively long history. However, the applicability of CAMD has been limited by the scales of computational resources generally available in the past. The surge in computational power seen in recent years is enabling the applicability of CAMD to unprecedented levels. Here, we focus on the CAMD for materials critical for the continued advancement of the complementary metal oxide semiconductor (CMOS) semiconductor technology. In particular, we apply CAMD to the engineering of high-permittivity dielectric materials. We developed a Reax forcefield that includes Si, O, Zr, and H. We used this forcefield in a series of simulations to compute the static dielectric constant of silica glasses for low Zr concentration using a classical molecular dynamics approach. Our results are compared against experimental values. Not only does our work reveal numerical estimations on ZrO2-doped silica dielectrics, it also provides a foundation and demonstration of how CAMD can enable the engineering of materials of critical importance for advanced CMOS technology nodes.
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Affiliation(s)
| | - Jon López-Zorrilla
- Department
of Physics, University of the Basque Country
UPV/EHU, Barrio Sarriena s/n, 48330 Leioa, Bizkaia, Spain
| | - Hegoi Manzano
- Department
of Physics, University of the Basque Country
UPV/EHU, Barrio Sarriena s/n, 48330 Leioa, Bizkaia, Spain
| | | | - André Ivanov
- Department
of Electrical and Computer Engineering, UBC, V6T1Z4 Vancouver, Canada
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9
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Seguí E, Alonso-Orduna V, Sesma A, Martin-Richard M, Salud A, Fernández-Montes A, Fernández-Martos C, Ruiz-Casado A, Gallego J, Aparicio J, Gálvez E, Manzano H, Alcaide-Garcia J, Gallego R, Falco E, Esposito F, Oliveres H, Torres F, Feliu J, Maurel J. 471P Identification and validation of a new prognostic score in metastatic colorectal cancer (mCRC): GEMCAD score. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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10
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Valecillos J, Manzano H, Aguayo AT, Bilbao J, Castaño P. Front Cover: Kinetic and Deactivation Differences Among Methanol, Dimethyl Ether and Chloromethane as Stock for Hydrocarbons (ChemCatChem 22/2019). ChemCatChem 2019. [DOI: 10.1002/cctc.201901971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- José Valecillos
- Department of Chemical EngineeringUniversity of the Basque Country (UPV/EHU) P.O. Box 644 Bilbao 48080 Spain
| | - Hegoi Manzano
- Department of Condensed Matter PhysicsUniversity of the Basque Country (UPV/EHU) P.O. Box 644 Bilbao 48080 Spain
| | - Andrés T. Aguayo
- Department of Chemical EngineeringUniversity of the Basque Country (UPV/EHU) P.O. Box 644 Bilbao 48080 Spain
| | - Javier Bilbao
- Department of Chemical EngineeringUniversity of the Basque Country (UPV/EHU) P.O. Box 644 Bilbao 48080 Spain
| | - Pedro Castaño
- Department of Chemical EngineeringUniversity of the Basque Country (UPV/EHU) P.O. Box 644 Bilbao 48080 Spain
- Multiscale Reaction Engineering KAUST Catalysis Center (KCC)King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
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11
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Valecillos J, Manzano H, Aguayo AT, Bilbao J, Castaño P. Kinetic and Deactivation Differences Among Methanol, Dimethyl Ether and Chloromethane as Stock for Hydrocarbons. ChemCatChem 2019. [DOI: 10.1002/cctc.201901204] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- José Valecillos
- Department of Chemical EngineeringUniversity of the Basque Country (UPV/EHU) P.O. Box 644 Bilbao 48080 Spain
| | - Hegoi Manzano
- Department of Condensed Matter PhysicsUniversity of the Basque Country (UPV/EHU) P.O. Box 644 Bilbao 48080 Spain
| | - Andrés T. Aguayo
- Department of Chemical EngineeringUniversity of the Basque Country (UPV/EHU) P.O. Box 644 Bilbao 48080 Spain
| | - Javier Bilbao
- Department of Chemical EngineeringUniversity of the Basque Country (UPV/EHU) P.O. Box 644 Bilbao 48080 Spain
| | - Pedro Castaño
- Department of Chemical EngineeringUniversity of the Basque Country (UPV/EHU) P.O. Box 644 Bilbao 48080 Spain
- Multiscale Reaction Engineering KAUST Catalysis Center (KCC)King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
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12
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Valecillos J, Manzano H, Aguayo AT, Bilbao J, Castaño P. Kinetic and Deactivation Differences Among Methanol, Dimethyl Ether and Chloromethane as Stock for Hydrocarbons. ChemCatChem 2019. [DOI: 10.1002/cctc.201902050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- José Valecillos
- Department of Chemical EngineeringUniversity of the Basque Country (UPV/EHU), P.O. Box 644 Bilbao 48080 Spain
| | - Hegoi Manzano
- Department of Condensed Matter PhysicsUniversity of the Basque Country (UPV/EHU), P.O. Box 644 Bilbao 48080 Spain
| | - Andrés T. Aguayo
- Department of Chemical EngineeringUniversity of the Basque Country (UPV/EHU), P.O. Box 644 Bilbao 48080 Spain
| | - Javier Bilbao
- Department of Chemical EngineeringUniversity of the Basque Country (UPV/EHU), P.O. Box 644 Bilbao 48080 Spain
| | - Pedro Castaño
- Department of Chemical EngineeringUniversity of the Basque Country (UPV/EHU), P.O. Box 644 Bilbao 48080 Spain
- Multiscale Reaction Engineering, KAUST Catalysis Center (KCC)King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
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13
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Affiliation(s)
- Pablo Martin
- Building Technologies Division TecnaliaParque Tecnológico de BizkaiaAstondo Bidea, Edificio 700 CP 48160 Derio Bizkaia Spain
| | - Hegoi Manzano
- Department of Condensed Matter PhysicsUniversity of the Basque Country UPV/EHUBarrio Sarriena s/n 48940 Leioa Bizkaia Spain
| | - Jorge S. Dolado
- Materials Physics Center ‐ Centro de Física de Materiales CSIC‐UPV/EHUPaseo Manuel de Lardizabal, 5 20018 San Sebastian Spain
- Donostia International Physics CenterPaseo Manuel Lardizabal 3 20018 San Sebastián Spain
- Faculty of Civil Engineering and GeosciencesDelft University of TechnologyStevinweg 1 2628 CN Delft The Netherlands
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14
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Barroso R, Carbajal H, Ortiz H, Malaniuk M, Quenol H, Murgo M, Coria C, Videla R, Prieto S, Manzano H, Quini C, Aruani C. Vinos de Altura del Noroeste Argentino – Características físico- químicas y Sensoriales. BIO Web Conf 2019. [DOI: 10.1051/bioconf/20191501002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Se evaluaron 168 vinos experimentales, variedades Malbec, Cabernet Sauvignon, Syrah, y Tannat, de las cosechas 2014, 2015, y 2016, correspondientes a 24 viñedos de altura de las provincias de Salta y Jujuy, ubicados a altitudes desde 1575 hasta 2756 m.s.n.m. Los vinos fueron supeditados a análisis físico-químicos y sensoriales. Los datos físico químicos fueron analizados a través de ANOVA y Regresión Lineal Simple. Las similitudes y diferencias estadísticas de los datos sensoriales fueron evaluados mediante análisis de varianza (ANOVA), comparación múltiple de medias a través del test de Fisher (LSD), y análisis de componentes principales (PCA). Cada viñedo contó con un sensor de temperatura a través de los cuales se recopilaron datos a lo largo de todo el ciclo de la vid (años 2013 a 2015). Las temperaturas se utilizaron para la determinación de índices bioclimáticos de Winkler, Huglin e Índice de Noches Frescas. Los resultados indicarían una marcada influencia de las temperaturas y altitud en las variables del vino, principalmente las relacionadas al color y demás características sensoriales (P < 0.001,0.01 y 0.05), mostrando diferencias significativas entre los vinos de una misma variedad, provenientes de viñedos ubicados en distintas zonas vitícolas de características topográficas y de altitud diferentes.
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15
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Lolli F, Manzano H, Provis JL, Bignozzi MC, Masoero E. Atomistic Simulations of Geopolymer Models: The Impact of Disorder on Structure and Mechanics. ACS Appl Mater Interfaces 2018; 10:22809-22820. [PMID: 29896958 DOI: 10.1021/acsami.8b03873] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Geopolymers are hydrated aluminosilicates with excellent binding properties. Geopolymers appeal to the construction sector as a more sustainable alternative to traditional cements, but their exploitation is limited by a poor understanding of the linkage between chemical composition and macroscopic properties. Molecular simulations can help clarify this linkage, but existing models based on amorphous or crystalline aluminosilicate structures provide only a partial explanation of experimental data on the nanoscale. This paper presents a new model for the molecular structure of geopolymers, in particular for nanoscale interfacial zones between crystalline and amorphous nanodomains, which are crucial for the overall mechanical properties of the material. For a range of Si-Al molar ratios and water contents, the proposed structures are analyzed in terms of skeletal density, ring structure, pore structure, bond-angle distribution, bond length distribution, X-ray diffraction, X-ray pair distribution function, elastic moduli, and large-strain mechanics. Results are compared with experimental data and with other simulation results for amorphous and crystalline molecular models, showing that the newly proposed structures better capture important structural features with an impact on mechanical properties. This offers a new starting point for the multiscale modeling of geopolymers.
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Affiliation(s)
- Francesca Lolli
- School of Engineering , Newcastle University , Newcastle Upon Tyne NE1 7RU , U.K
| | - Hegoi Manzano
- Condensed Matter Physics Department , University of the Basque Country (UPV/EHU) , Bilbao 48940 , Spain
| | - John L Provis
- Department of Materials Science and Engineering , University of Sheffield , Sheffield S10 2TN , U.K
| | - Maria Chiara Bignozzi
- Dipartimento di Ingegneria Civile, Chimica, Ambientale e dei Materiali , University of Bologna , Bologna 40131 , Italy
| | - Enrico Masoero
- School of Engineering , Newcastle University , Newcastle Upon Tyne NE1 7RU , U.K
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16
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Manzano H, Zhang W, Raju M, Dolado JS, López-Arbeloa I, van Duin ACT. Benchmark of ReaxFF force field for subcritical and supercritical water. J Chem Phys 2018; 148:234503. [DOI: 10.1063/1.5031489] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Hegoi Manzano
- Department of Condensed Matter Physics, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Weiwei Zhang
- Department of Mechanical and Nuclear Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Muralikrishna Raju
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, USA
| | - Jorge S. Dolado
- CiTG, TU, Delft, The Netherlands; Tecnalia Research and Innovation, Materials, Sustainable Construction Division, Donostia, Spain; and Donostia International Physics Center, Donostia, Spain
| | - Iñigo López-Arbeloa
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Adri C. T. van Duin
- Department of Mechanical and Nuclear Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
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17
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Abstract
Cementation is a widespread technique to immobilize nuclear waste due to the low leachability of cementitious materials. The capacity of calcium silicate hydrate (C-S-H), the main component of cement, to retain radionuclide Cs has been empirically studied at the macroscale, yet the specific molecular scale mechanisms that govern the retention have not been determined. In this work, we employed molecular dynamics simulations to investigate the adsorption and diffusivity of Cs into a C-S-H gel nanopore. From the simulations, it was possible to distinguish three types of Cs adsorption configurations on the C-S-H: an inner-sphere surface site where Cs is strongly bound, an outer-sphere surface site where Cs is loosely bound, and Cs free in the nanopore. For each configuration, we determined the sorption energy, and the diffusion coefficients, up to two orders of magnitude lower than in bulk water due to the effect of nanoconfinement in the worst case scenario. It has also proved that Cs cannot displace the intrinsic Ca from the C-S-H surface, and we calculated the binding strength and the residence time of the cations in the surface adsorption sites. Finally, we quantified the average number of adsorption sites per nm2 of the C-S-H surface. All these results are the first insights into Cs retention in cement at the molecular scale and will be useful to build macroscopic diffusion models and devise cement formulations to improve radionuclide Cs retention from spent nuclear fuel.
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Affiliation(s)
- Eduardo Duque-Redondo
- Molecular Spectroscopy Laboratory, Department of Physical Chemistry, University of the Basque Country UPV/EHU, Aptdo. 664, 48080, Bilbao, Spain.
| | - Yamada Kazuo
- Fukushima Branch, National Institute for Environmental Studies, Miharu, Tamura, Fukushima, 963-7700, Japan
| | - Iñigo López-Arbeloa
- Molecular Spectroscopy Laboratory, Department of Physical Chemistry, University of the Basque Country UPV/EHU, Aptdo. 664, 48080, Bilbao, Spain.
| | - Hegoi Manzano
- Department of Condensed Matter Physics, University of the Basque Country UPV/EHU, Aptdo. 664, Bilbao, Spain.
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18
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Montero R, Martínez-Martínez V, Longarte A, Epelde-Elezcano N, Palao E, Lamas I, Manzano H, Agarrabeitia AR, López Arbeloa I, Ortiz MJ, Garcia-Moreno I. Singlet Fission Mediated Photophysics of BODIPY Dimers. J Phys Chem Lett 2018; 9:641-646. [PMID: 29337574 DOI: 10.1021/acs.jpclett.7b03074] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The photodynamics of an orthogonal BODIPY dimer, particularly the formation of triplet states, has been explored by femtosecond and nanosecond transient absorption measurements. The short time scale data show the appearance of transient features of triplet character that, according to quantitative analysis of their intensities, account for more than 100% of the initially excited molecules, which reveals the occurrence of a singlet fission process in the isolated dimers. The formation rate of the triplet correlated state 1(TT) is found to depend on the solvent polarity, pointing to the mediation of a charge transfer character state. The dissociation of the 1(TT) state into pairs of individual triplets determines the triplet yield measured in the long time scales. The kinetic model derived from the results provides a comprehensive view of the photodynamics of BODIPY dimers and permits rationalization of the photophysical parameters of these systems.
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Affiliation(s)
- Raúl Montero
- SGIKER Laser, Universidad del País Vasco, UPV/EHU , Apartado 644, 48080 Bilbao, Spain
| | | | | | | | - Eduardo Palao
- Departamento de Química Orgánica I, Facultad de CC. Químicas, Universidad Complutense de Madrid , Ciudad Universitaria s/n, 28040 Madrid, Spain
| | | | - Hegoi Manzano
- Departamento de Física de la Materia Condensada, Universidad del País Vasco, UPV/EHU , Apartado 644, 48080 Bilbao, Spain
| | - Antonia R Agarrabeitia
- Departamento de Química Orgánica I, Facultad de CC. Químicas, Universidad Complutense de Madrid , Ciudad Universitaria s/n, 28040 Madrid, Spain
| | | | - Maria J Ortiz
- Departamento de Química Orgánica I, Facultad de CC. Químicas, Universidad Complutense de Madrid , Ciudad Universitaria s/n, 28040 Madrid, Spain
| | - Inmaculada Garcia-Moreno
- Departamento de Sistemas de Baja Dimensionalidad Superficies y Materia Condensada, Instituto Química Física "Rocasolano" C.S.I.C. , Serrano 119, 28006 Madrid, Spain
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19
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Zhou Y, Hou D, Manzano H, Orozco CA, Geng G, Monteiro PJM, Liu J. Interfacial Connection Mechanisms in Calcium-Silicate-Hydrates/Polymer Nanocomposites: A Molecular Dynamics Study. ACS Appl Mater Interfaces 2017; 9:41014-41025. [PMID: 29076343 DOI: 10.1021/acsami.7b12795] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Properties of organic/inorganic composites can be highly dependent on the interfacial connections. In this work, molecular dynamics, using pair-potential-based force fields, was employed to investigate the structure, dynamics, and stability of interfacial connections between calcium-silicate-hydrates (C-S-H) and organic functional groups of three different polymer species. The calculation results suggest that the affinity between C-S-H and polymers is influenced by the polarity of the functional groups and the diffusivity and aggregation tendency of the polymers. In the interfaces, the calcium counterions from C-S-H act as the coordination atoms in bridging the double-bonded oxygen atoms in the carboxyl groups (-COOH), and the Ca-O connection plays a dominant role in binding poly(acrylic acid) (PAA) due to the high bond strength defined by time-correlated function. The defective calcium-silicate chains provide significant numbers of nonbridging oxygen sites to accept H-bonds from -COOH groups. As compared with PAA, the interfacial interactions are much weaker between C-S-H and poly(vinyl alcohol) (PVA) or poly(ethylene glycol) (PEG). Predominate percentage of the -OH groups in the PVA form H-bonds with inter- and intramolecule, which results in the polymer intertwining and reduces the probability of H-bond connections between PVA and C-S-H. On the other hand, the inert functional groups (C-O-C) in poly(ethylene glycol) (PEG) make this polymer exhibit unfolded configurations and move freely with little restrictions. The interaction mechanisms interpreted in this organic-inorganic interface can give fundamental insights into the polymer modification of C-S-H and further implications to improving cement-based materials from the genetic level.
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Affiliation(s)
- Yang Zhou
- School of Materials Science and Engineering, Southeast University , Nanjing 211189, China
- Department of Civil and Environmental Engineering, University of California , Berkeley, California 94720, United States
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Research Institute of Building Science Co. , Nanjing 211103, China
| | - Dongshuai Hou
- School of Civil Engineering, Qingdao Technological University , Qingdao 266033, China
| | - Hegoi Manzano
- Department of Condensed Matter Physics, University of the Basque Country UPV/EHU , Barrio Sarriena s/n, 48960 Leioa, Spain
| | - Carlos A Orozco
- Department of Civil and Environmental Engineering, University of California , Berkeley, California 94720, United States
| | - Guoqing Geng
- Department of Civil and Environmental Engineering, University of California , Berkeley, California 94720, United States
| | - Paulo J M Monteiro
- Department of Civil and Environmental Engineering, University of California , Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Jiaping Liu
- School of Materials Science and Engineering, Southeast University , Nanjing 211189, China
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20
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Palao E, Sola-Llano R, Tabero A, Manzano H, Agarrabeitia AR, Villanueva A, López-Arbeloa I, Martínez-Martínez V, Ortiz MJ. AcetylacetonateBODIPY-Biscyclometalated Iridium(III) Complexes: Effective Strategy towards Smarter Fluorescent Photosensitizer Agents. Chemistry 2017; 23:10139-10147. [PMID: 28543812 DOI: 10.1002/chem.201701347] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Indexed: 11/10/2022]
Abstract
Biscyclometalated IrIII complexes involving boron-dipyrromethene (BODIPY)-based ancillary ligands, where the BODIPY unit is grafted to different chelating cores (acetylacetonate for Ir-1 and Ir-2, and bipyridine for Ir-3) by the BODIPY meso position, have been synthesized and characterized. Complexes with the BODIPY moiety directly grafted to acetylacetonate (Ir-1 and Ir-2) exhibit higher absorption coefficients (ϵ≈4.46×104 m-1 cm-1 and 3.38×104 m-1 cm-1 at 517 nm and 594 nm, respectively), higher moderate fluorescence emission (φfl ≈0.08 and 0.22 at 528 nm and 652 nm, respectively) and, in particular, more efficient singlet oxygen generation upon visible-light irradiation (φΔ ≈0.86 and 0.59, respectively) than that exhibited by Ir-3 (φΔ ≈0.51, but only under UV light). Phosphorescence emission, nanosecond time-resolved transient absorption, and DFT calculations suggest that BODIPY-localized long-lived 3 IL states are populated for Ir-1 and Ir-2. In vitro photodynamic therapy (PDT) activity studied for Ir-1 and Ir-2 in HeLa cells shows that such complexes are efficiently internalized into the cells, exhibiting low dark- and high photocytoxicity, even at significantly low complex concentration, making them potentially suitable as theranostic agents.
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Affiliation(s)
- Eduardo Palao
- Departamento de Química Orgánica I, Facultad de Ciencias Químicas, Ciudad Universitaria s/n, 28040, Madrid, Spain
| | - Rebeca Sola-Llano
- Departamento de Química Física, Universidad del País Vasco-EHU, Apartado 644, 48080, Bilbao, Spain
| | - Andrea Tabero
- Departamento de Biología, Universidad Autónoma de Madrid, Darwin 2, 28049, Madrid, Spain
| | - Hegoi Manzano
- Departamento de Física de la Materia Condensada, Universidad del País Vasco, UPV/EHU, Apartado 644, 48080, Bilbao, Spain
| | - Antonia R Agarrabeitia
- Departamento de Química Orgánica I, Facultad de Ciencias Químicas, Ciudad Universitaria s/n, 28040, Madrid, Spain
| | - Angeles Villanueva
- Departamento de Biología, Universidad Autónoma de Madrid, Darwin 2, 28049, Madrid, Spain.,Instituto Madrileño de Estudios Avanzados (IMDEA) Nanociencia, Ciudad Universitaria de Cantoblanco, 28049, Madrid, Spain
| | - Iñigo López-Arbeloa
- Departamento de Química Física, Universidad del País Vasco-EHU, Apartado 644, 48080, Bilbao, Spain
| | | | - Maria J Ortiz
- Departamento de Química Orgánica I, Facultad de Ciencias Químicas, Ciudad Universitaria s/n, 28040, Madrid, Spain
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21
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Epelde-Elezcano N, Palao E, Manzano H, Prieto-Castañeda A, Agarrabeitia AR, Tabero A, Villanueva A, de la Moya S, López-Arbeloa Í, Martínez-Martínez V, Ortiz MJ. Rational Design of Advanced Photosensitizers Based on Orthogonal BODIPY Dimers to Finely Modulate Singlet Oxygen Generation. Chemistry 2017; 23:4837-4848. [PMID: 28165162 DOI: 10.1002/chem.201605822] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Indexed: 11/06/2022]
Abstract
The synthesis, photophysical characterization, and modeling of a new library of halogen-free photosensitizers (PS) based on orthogonal boron dipyrromethene (BODIPY) dimers are reported. Herein we establish key structural factors in order to enhance singlet oxygen generation by judiciously choosing the substitution patterns according to key electronic effects and synthetic accessibility factors. The photosensitization mechanism of orthogonal BODIPY dimers is demonstrated to be strongly related to their intrinsic intramolecular charge transfer (ICT) character through the spin-orbit charge-transfer intersystem crossing (SOCT-ISC) mechanism. Thus, singlet oxygen generation can be effectively modulated through the solvent polarity and the presence of electron-donating or withdrawing groups in one of the BODIPY units. The photodynamic therapy (PDT) activity is demonstrated by in vitro experiments, showing that selected photosensitizers are efficiently internalized into HeLa cells, exhibiting low dark toxicity and high phototoxicity, even at low PS concentration (0.05-5×10-6 m).
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Affiliation(s)
- Nerea Epelde-Elezcano
- Departamento de Química Física, Universidad del País Vasco-EHU, Apartado 644, 48080, Bilbao, Spain
| | - Eduardo Palao
- Departamento de Química Orgánica I, Facultad de CC. Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain
| | - Hegoi Manzano
- Departamento de Física de la Materia Condensada, Universidad del País Vasco-EHU, Apartado 644, 48080, Bilbao, Spain)
| | - Alejandro Prieto-Castañeda
- Departamento de Química Orgánica I, Facultad de CC. Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain
| | - Antonia R Agarrabeitia
- Departamento de Química Física, Universidad del País Vasco-EHU, Apartado 644, 48080, Bilbao, Spain
| | - Andrea Tabero
- Departamento de Biología, Universidad Autónoma de Madrid, Darwin 2, 28049, Madrid, Spain
| | - Angeles Villanueva
- Departamento de Biología, Universidad Autónoma de Madrid, Darwin 2, 28049, Madrid, Spain.,Instituto Madrileño de Estudios Avanzados (IMDEA) Nanociencia, Ciudad Universitaria de Cantoblanco, 28049, Madrid, Spain
| | - Santiago de la Moya
- Departamento de Química Orgánica I, Facultad de CC. Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain
| | - Íñigo López-Arbeloa
- Departamento de Química Física, Universidad del País Vasco-EHU, Apartado 644, 48080, Bilbao, Spain
| | | | - María J Ortiz
- Departamento de Química Orgánica I, Facultad de CC. Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain
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22
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Alonso V, Emperador PE, Urena MM, Gallego J, Rodriguez J, Fernández J, Salud A, Falcó E, Manzano H, Zanui M, Gil M, Sarmiento UB, Martos CF, Calderero V, Ferrer A, Cuatrecasas M, Rojo F, Feliu J, Maurel J, García-Albéniz X. Prospective evaluation of BRAF, PI3K and PTEN as predictive and prognostic biomarkers in first-line advanced KRAS wild-type colorectal cancer treated with FOLFOX or FOLFIRI plus bi-weekly cetuximab. GEMCAD 10-02. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw370.88] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Maurel J, Martos CF, Richard MM, Alonso V, Méndez CM, Salud A, Pericay C, Aparicio J, Gallego J, Carmona A, Casado E, Manzano H, Horndler C, Rubini M, Cuatrecasas M, García-Albéniz X, Feliu J. PULSE, a phase 2 study of mFOLFOX6-panitumumab (P) with biomarker stratification as first-line chemotherapy (CT), in patients (pts) with KRAS (exon 2) metastatic colorectal cancer (mCRC). A GEMCAD 09-03 study. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw370.47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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24
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Epelde-Elezcano N, Martínez-Martínez V, Duque-Redondo E, Temiño I, Manzano H, López-Arbeloa I. Strategies for modulating the luminescence properties of pyronin Y dye–clay films: an experimental and theoretical study. Phys Chem Chem Phys 2016; 18:8730-8. [DOI: 10.1039/c6cp00382f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aggregation process of pyronin Y (PY) dye into thin films of different smectite clays, LAPONITE® and saponite, is deeply studied by means of electronic absorption and fluorescence spectroscopy and by molecular dynamics simulations.
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Affiliation(s)
| | | | | | - Inés Temiño
- Departamento de Química Física
- Universidad del País Vasco
- UPV/EHU
- 48080 Bilbao
- Spain
| | - Hegoi Manzano
- Departamento de Química Física
- Universidad del País Vasco
- UPV/EHU
- 48080 Bilbao
- Spain
| | - Iñigo López-Arbeloa
- Departamento de Química Física
- Universidad del País Vasco
- UPV/EHU
- 48080 Bilbao
- Spain
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25
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Manzano H, Durgun E, López-Arbeloa I, Grossman JC. Insight on Tricalcium Silicate Hydration and Dissolution Mechanism from Molecular Simulations. ACS Appl Mater Interfaces 2015; 7:14726-14733. [PMID: 26107551 DOI: 10.1021/acsami.5b02505] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hydration of mineral surfaces, a critical process for many technological applications, encompasses multiple coupled chemical reactions and topological changes, challenging both experimental characterization and computational modeling. In this work, we used reactive force field simulations to understand the surface properties, hydration, and dissolution of a model mineral, tricalcium silicate. We show that the computed static quantities, i.e., surface energies and water adsorption energies, do not provide useful insight into predict mineral hydration because they do not account for major structural changes at the interface when dynamic effects are included. Upon hydration, hydrogen atoms from dissociated water molecules penetrate into the crystal, forming a disordered calcium silicate hydrate layer that is similar for most of the surfaces despite wide-ranging static properties. Furthermore, the dynamic picture of hydration reveals the hidden role of surface topology, which can lead to unexpected water tessellation that stabilizes the surface against dissolution.
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Affiliation(s)
- Hegoi Manzano
- †Molecular Spectroscopy Laboratory, Physical Chemistry Department, University of the Basque Country, Barrio Sarriena s/n, Leioa, 48940 Bizkaia, Spain
| | - Engin Durgun
- ‡UNAM-National Nanotechnology Research Center and Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
| | - Iñigo López-Arbeloa
- †Molecular Spectroscopy Laboratory, Physical Chemistry Department, University of the Basque Country, Barrio Sarriena s/n, Leioa, 48940 Bizkaia, Spain
| | - Jeffrey C Grossman
- §Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Monasterio M, Gaitero JJ, Manzano H, Dolado JS, Cerveny S. Effect of chemical environment on the dynamics of water confined in calcium silicate minerals: natural and synthetic tobermorite. Langmuir 2015; 31:4964-4972. [PMID: 25867059 DOI: 10.1021/acs.langmuir.5b00614] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Confined water in the slit mesopores of the mineral tobermorite provides an excellent model system for analyzing the dynamic properties of water confined in cement-like materials. In this work, we use broadband dielectric spectroscopy (BDS) to analyze the dynamic of water entrapped in this crystalline material. Two samples, one natural and one synthetic, were analyzed, and despite their similar structure, the motion of confined water in their zeolitic cavity displays considerably different behavior. The water dynamics splits into two different behaviors depending on the chemical nature of the otherwise identical structural environment: water molecules located in areas where the primary building units are SiO4 relax slowly compared to water molecules located in cavities built with both AlO4 and SiO4. Compared to water confined in regular porous systems, water restricted in tobermorite is slower, indicating that the mesopore structure induces high disorder in the water structure. A comparison with water confined in the C-S-H gel is also discussed in this work. The strong dynamical changes in water due to the presence of aluminum might have important implications in the chemical transport of ions within hydrated calcium silicates, a process that governs the leaching and chemical degradation of cement.
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Affiliation(s)
- Manuel Monasterio
- †Centro de Fisica de Materiales (CSIC, UPV/EHU)-Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
| | | | - Hegoi Manzano
- §Molecular Spectroscopy Laboratory, University of Basque Country UPV EHU, Bilbao 48080, Spain
| | | | - Silvina Cerveny
- †Centro de Fisica de Materiales (CSIC, UPV/EHU)-Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- ∥Donostia International Physics Center, 20018 San Sebastián, Spain
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Epelde-Elezcano N, Duque-Redondo E, Martínez-Martínez V, Manzano H, López-Arbeloa I. Preparation, photophysical characterization, and modeling of LDS722/Laponite 2D-ordered hybrid films. Langmuir 2014; 30:10112-10117. [PMID: 25087605 DOI: 10.1021/la502081c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A novel hybrid material with promising optical properties for nonlinear optical applications is presented, as formed by LDS 722 organic dye confined in Laponite clay. Thin films of the hybrid material with different dye loadings have been prepared. The film thickness, the dye and water content, and the clay swelling due to guest molecule incorporation have been characterized. Then, the photophysical properties of the thin films have been studied in detail using experimental methods and molecular simulation. As the dye load increases, the hybrid films present a hypsochromic shift in absorption and a bathochromic shift in emission. The former is attributed to the increasing strength of solvation of the dye donor group, while the latter is ascribed to a switch from an intramolecular to an intermolecular charge-transfer process as the dye load increases. The LDS 722 molecules are preferentially oriented in the host clay almost in parallel to the platelet surfaces, inducing macroscopic order that makes the material responsive to polarized light.
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Affiliation(s)
- Nerea Epelde-Elezcano
- Molecular Spectroscopy Laboratory, University of the Basque Country UPV/EHU , Apartado 644, 48080 Bilbao, Spain
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Manzano H, Enyashin AN, Dolado JS, Ayuela A, Frenzel J, Seifert G. Do cement nanotubes exist? Adv Mater 2012; 24:3239-3245. [PMID: 22589176 DOI: 10.1002/adma.201103704] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 02/27/2012] [Indexed: 05/31/2023]
Abstract
Using atomistic simulations, this work indicates that cement nanotubes can exist. The chemically compatible nanotubes are constructed from the two main minerals in ordinary Portland cement pastes, namely calcium hydroxide and a calcium silicate hydrate called tobermorite. These results show that such nanotubes are stable and have outstanding mechanical properties, unique characteristics that make them ideally suitable for nanoscale reinforcements of cements.
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Affiliation(s)
- H Manzano
- Molecular Spectroscopy Laboratory, Department of Physical Chemistry, University of the Basque Country UPV/EHU, BILBAO, Spain
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Manzano H, Pellenq RJM, Ulm FJ, Buehler MJ, van Duin ACT. Hydration of calcium oxide surface predicted by reactive force field molecular dynamics. Langmuir 2012; 28:4187-4197. [PMID: 22316164 DOI: 10.1021/la204338m] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this work, we present the parametrization of Ca-O/H interactions within the reactive force field ReaxFF, and its application to study the hydration of calcium oxide surface. The force field has been fitted using density functional theory calculations on gas phase calcium-water clusters, calcium oxide bulk and surface properties, calcium hydroxide, bcc and fcc Ca, and proton transfer reactions in the presence of calcium. Then, the reactive force field has been used to study the hydration of the calcium oxide {001} surface with different water contents. Calcium oxide is used as a catalyzer in many applications such as CO(2) sequestration and biodiesel production, and the degree of surface hydroxylation is a key factor in its catalytic performance. The results show that the water dissociates very fast on CaO {001} bare surfaces without any defect or vacancy. The surface structure is maintained up to a certain amount of water, after which the surface undergoes a structural rearrangement, becoming a disordered calcium hydroxyl layer. This transformation is the most probable reason for the CaO catalytic activity decrease.
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Affiliation(s)
- Hegoi Manzano
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States.
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Manzano H, Moeini S, Marinelli F, van Duin ACT, Ulm FJ, Pellenq RJM. Confined water dissociation in microporous defective silicates: mechanism, dipole distribution, and impact on substrate properties. J Am Chem Soc 2012; 134:2208-15. [PMID: 22239553 DOI: 10.1021/ja209152n] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Interest in microporous materials has risen in recent years, as they offer a confined environment that is optimal to enhance chemical reactions. Calcium silicate hydrate (C-S-H) gel, the main component of cement, presents a layered structure with sub-nanometer-size disordered pores filled with water and cations. The size of the pores and the hydrophilicity of the environment make C-S-H gel an excellent system to study the possibility of confined water reactions. To investigate it, we have performed molecular dynamics simulations using the ReaxFF force field. The results show that water does dissociate to form hydroxyl groups. We have analyzed the water dissociation mechanism, as well as the changes in the structure and water affinity of the C-S-H matrix and water polarization, comparing the results with the behavior of water in a defective zeolite. Finally, we establish a relationship between water dissociation in C-S-H gel and the increase of hardness due to a transformation from a two- to a three-dimensional structure.
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Affiliation(s)
- Hegoi Manzano
- Concrete Sustainability Hub, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
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Bernardi M, Kirsten T, Spinosa H, Manzano H. Ivermectin impairs sexual behavior in sexually naïve, but not sexually experienced male rats. Res Vet Sci 2011; 91:77-81. [DOI: 10.1016/j.rvsc.2010.07.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2009] [Revised: 07/08/2010] [Accepted: 07/26/2010] [Indexed: 11/26/2022]
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González-Teresa R, Morales-Florez V, Manzano H, Dolado JS. Modelos estructurales del empaquetamiento aleatorio de partículas esféricas de Tobermorita: una aproximación computacional sencilla. ACTA ACUST UNITED AC 2010. [DOI: 10.3989/mc.2010.57010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Affiliation(s)
- H. Manzano
- LABEIN-Tecnalia, Parque Tecnológico de Bizkaia, Edificio 700, 49160 Derio, Spain, Nanostructured and Eco-efficient Materials for Construction Unit, Associated Unit LABEIN-Tecnalia/CSIC, Spain, and Departamento de Física de Materiales, Facultad de Químicas, Centro de Física de Materiales CSIC-UPV/EHU and Donostia Internacional Physics Center, 20018 San Sebastián/ Donostia, Spain
| | - J. S. Dolado
- LABEIN-Tecnalia, Parque Tecnológico de Bizkaia, Edificio 700, 49160 Derio, Spain, Nanostructured and Eco-efficient Materials for Construction Unit, Associated Unit LABEIN-Tecnalia/CSIC, Spain, and Departamento de Física de Materiales, Facultad de Químicas, Centro de Física de Materiales CSIC-UPV/EHU and Donostia Internacional Physics Center, 20018 San Sebastián/ Donostia, Spain
| | - A. Ayuela
- LABEIN-Tecnalia, Parque Tecnológico de Bizkaia, Edificio 700, 49160 Derio, Spain, Nanostructured and Eco-efficient Materials for Construction Unit, Associated Unit LABEIN-Tecnalia/CSIC, Spain, and Departamento de Física de Materiales, Facultad de Químicas, Centro de Física de Materiales CSIC-UPV/EHU and Donostia Internacional Physics Center, 20018 San Sebastián/ Donostia, Spain
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Abstract
Animal performance and health status are adversely affected by long-term cyanide ingestion; however, the effects of cyanide ingestion by pigs have not been fully determined. The aim of the present study was to determine the effects of prolonged exposure to different doses of potassium cyanide (KCN) in growing-finishing swine. Twenty-four pigs, 45 days of age, were divided into four equal groups and treated with different doses of KCN: 0, 2.0, 4.0 or 6.0 mg per kg body weight per day for 70 consecutive days. The results showed a significant alteration in thiocyanate, creatinine and urea levels and in alanine aminotransferase activity of swine dosed with 4.0 and 6.0 mg/kg/KCN. Thyroid weight was significantly increased in those pigs from 4.0 mg/kg KCN group, but no change in cholesterol, triiodothyronine or thyroline levels were observed. Body and carcase weights, body weight gain, and bacon thickness were not affected by KCN treatment. The histopathological study revealed increased numbers of vacuoles in the colloid of thyroid follicles, degeneration of cerebellar white matter and Purkinje cells, degeneration of renal tubular epithelial cells, caryolysis and pyknosis in hepatocytes, and disturbance of the normal lobular architecture of the liver in all treated pigs. Thus, long-term administration of KCN to swine affects several tissues and could adversely affect animal production.
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Affiliation(s)
- H Manzano
- Research Center for Veterinary Toxicology (CEPTOX), Department of Pathology, School of Veterinary Medicine, São Paulo, Brazil
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Losa F, Manzano H, Vicente P, Rifa J, Ocaña J, Balcells M, Mediavilla D, Heras L. Irinotecan (CPT-11) in combination with raltitrexed (TX) in patients with previously untreated, advanced colorectal cancer (ACC) patients. Preliminary results of a phase I/II trial. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.3675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- F. Losa
- Hospital Creu Roja, L'Hospitalet de Llobregat, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital General de Granollers, Granollers, Spain; Almirall Prodesfarma, S.A., Barcelona, Spain; Recerca Clinica, S.L., Barcelona, Spain
| | - H. Manzano
- Hospital Creu Roja, L'Hospitalet de Llobregat, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital General de Granollers, Granollers, Spain; Almirall Prodesfarma, S.A., Barcelona, Spain; Recerca Clinica, S.L., Barcelona, Spain
| | - P. Vicente
- Hospital Creu Roja, L'Hospitalet de Llobregat, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital General de Granollers, Granollers, Spain; Almirall Prodesfarma, S.A., Barcelona, Spain; Recerca Clinica, S.L., Barcelona, Spain
| | - J. Rifa
- Hospital Creu Roja, L'Hospitalet de Llobregat, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital General de Granollers, Granollers, Spain; Almirall Prodesfarma, S.A., Barcelona, Spain; Recerca Clinica, S.L., Barcelona, Spain
| | - J. Ocaña
- Hospital Creu Roja, L'Hospitalet de Llobregat, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital General de Granollers, Granollers, Spain; Almirall Prodesfarma, S.A., Barcelona, Spain; Recerca Clinica, S.L., Barcelona, Spain
| | - M. Balcells
- Hospital Creu Roja, L'Hospitalet de Llobregat, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital General de Granollers, Granollers, Spain; Almirall Prodesfarma, S.A., Barcelona, Spain; Recerca Clinica, S.L., Barcelona, Spain
| | - D. Mediavilla
- Hospital Creu Roja, L'Hospitalet de Llobregat, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital General de Granollers, Granollers, Spain; Almirall Prodesfarma, S.A., Barcelona, Spain; Recerca Clinica, S.L., Barcelona, Spain
| | - L. Heras
- Hospital Creu Roja, L'Hospitalet de Llobregat, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital General de Granollers, Granollers, Spain; Almirall Prodesfarma, S.A., Barcelona, Spain; Recerca Clinica, S.L., Barcelona, Spain
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Gallego R, Cervantes A, Pera M, Manzano H, Salazar R, Conill C, Maurel J, Marfà X, Gascón P. A phase I study of radiation therapy (RT) with concurrent oxaliplatin (OXL), cisplatin (P) and protacted infusion 5-fluorouracil (FU) for locally advanced esophageal (ES) or gastroesophageal (GEJ) carcinoma. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.4243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- R. Gallego
- Hospital Clínic, Barcelona, Spain; Hospital Clínic, Valencia, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital Vall d'Hebron, Barcelona, Spain; Sanofi-Synthélabo S.A., Barcelona, Spain
| | - A. Cervantes
- Hospital Clínic, Barcelona, Spain; Hospital Clínic, Valencia, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital Vall d'Hebron, Barcelona, Spain; Sanofi-Synthélabo S.A., Barcelona, Spain
| | - M. Pera
- Hospital Clínic, Barcelona, Spain; Hospital Clínic, Valencia, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital Vall d'Hebron, Barcelona, Spain; Sanofi-Synthélabo S.A., Barcelona, Spain
| | - H. Manzano
- Hospital Clínic, Barcelona, Spain; Hospital Clínic, Valencia, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital Vall d'Hebron, Barcelona, Spain; Sanofi-Synthélabo S.A., Barcelona, Spain
| | - R. Salazar
- Hospital Clínic, Barcelona, Spain; Hospital Clínic, Valencia, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital Vall d'Hebron, Barcelona, Spain; Sanofi-Synthélabo S.A., Barcelona, Spain
| | - C. Conill
- Hospital Clínic, Barcelona, Spain; Hospital Clínic, Valencia, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital Vall d'Hebron, Barcelona, Spain; Sanofi-Synthélabo S.A., Barcelona, Spain
| | - J. Maurel
- Hospital Clínic, Barcelona, Spain; Hospital Clínic, Valencia, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital Vall d'Hebron, Barcelona, Spain; Sanofi-Synthélabo S.A., Barcelona, Spain
| | - X. Marfà
- Hospital Clínic, Barcelona, Spain; Hospital Clínic, Valencia, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital Vall d'Hebron, Barcelona, Spain; Sanofi-Synthélabo S.A., Barcelona, Spain
| | - P. Gascón
- Hospital Clínic, Barcelona, Spain; Hospital Clínic, Valencia, Spain; Hospital Son Dureta, Palma de Mallorca, Spain; Hospital Vall d'Hebron, Barcelona, Spain; Sanofi-Synthélabo S.A., Barcelona, Spain
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Soto-Blanco B, Sousa AB, Manzano H, Guerra JL, Górniak SL. Does prolonged cyanide exposure have a diabetogenic effect? Vet Hum Toxicol 2001; 43:106-8. [PMID: 11308117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Cyanide exposure through cassava consumption has been associated with the development of malnutrition-related diabetes mellitus (MRDM). However, there are few experimental reproductions of this disease. In the present study 42 rats received 0, 9.0 or 12.0 mg KCN/kg bw/d for 15 d, 26 pigs were dosed with 0, 2.0, 4.0 or 6.0 mg KCN/kg for 74 d, and 34 goats received 0, 0.3, 0.6, 1.2 or 3.0 mg KCN/kg for 5 mo. At the end of each experimental period, plasma samples were obtained for glucose and thiocyanate measurement, and the pancreas was collected for histopathologic study. No significant differences in plasma glucose concentrations occurred between groups. The pancreas had no pathology. Chronic cyanide exposure did not promote diabetogenic effects in rats, swine or goats, suggesting that cyanide is not responsible for MRDM in humans.
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Affiliation(s)
- B Soto-Blanco
- Research Center for Veterinary Toxicology, Department of Pathology, School of Veterinary Medicine, University of São Paulo, SP, Brazil
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Molins C, Manzano H, Maestu I, Montalar J. [Amyotrophic neuralgia and bronchopulmonary microcytic carcinoma]. Med Clin (Barc) 1993; 100:319. [PMID: 8385250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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40
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Rifà J, Manzano H. [Extramedullary plasmocytoma of the velum palatinum]. Med Clin (Barc) 1991; 96:478. [PMID: 2056796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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