1
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Demir S, Demir Gİ, Çankaya M, Tekin A. Stable and metastable crystal structures and ammonia dynamics in strontium chloride ammines. Phys Chem Chem Phys 2023; 25:28282-28295. [PMID: 37830376 DOI: 10.1039/d3cp04114j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Metal halide ammines are promising ammonia storage materials due to their high ammonia densities and suitable decomposition properties. Here, we studied the polymorphism of ammines with a general formula of Sr(NH3)nCl2 (n = 1, 2, 4, 6, and 8) by combining the Fast and Flexible CrystAl Structure Predictor (FFCASP) with density functional theory (DFT) calculations. Furthermore, the lattice stability and the minimum energy paths for bulk and surface diffusion of NH3 were investigated by performing phonon and nudged elastic band (NEB) calculations. In addition to the successful reproduction of the reported experimental crystal structures of octammine (Pnma (IT number 62)), diammine (Aem2 (IT number 39)) and monoammine (Cmcm (IT number 63)), several isoenergetic polymorphs for each phase were also found. Not only the experimentally determined octammine and monoammine structures, but also the proposed structures for the hexammine and tetrammine phases were found to be metastable. While phonon calculations show instability for the experimental diammine structure, some of the proposed structures for the diammine phase showed thermodynamical stability. Moreover, NEB paths examining the bulk and surface diffusion of NH3 are in accordance with the experimental desorption enthalpies.
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Affiliation(s)
- Samet Demir
- Informatics Institute, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey.
- TÜBİTAK Research Institute for Fundamental Sciences, 41470 Gebze, Kocaeli, Turkey
| | - Gözde İniş Demir
- Informatics Institute, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey.
| | - Mehmet Çankaya
- Informatics Institute, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey.
| | - Adem Tekin
- Informatics Institute, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey.
- TÜBİTAK Research Institute for Fundamental Sciences, 41470 Gebze, Kocaeli, Turkey
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2
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Wegner W, Fijalkowski KJ. Synthesis Method of Unsolvated Organic Derivatives of Metal Borohydrides. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8653. [PMID: 36500148 PMCID: PMC9741427 DOI: 10.3390/ma15238653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/24/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
A new, scalable, wet-chemistry single-pot method of synthesising pure unsolvated organic derivatives of metal borohydrides is presented. The metathetic reaction in a weakly coordinating solvent is exemplified by the synthesis of [(n-C4H9)4N][Y(BH4)4] and [Ph4P][Y(BH4)4] systems. For the latter compound, the crystal structure was solved and described. Organic borohydride salts obtained by the new method can find various applications, e.g., can be used as precursors in synthesis of hydrogen-rich mixed-metal borohydrides-promising materials for solid-state chemical storage of hydrogen.
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3
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Zhou S, Wei D, Wan H, Yang X, Dai Y, Chen Y, Pan F. Efficient catalytic effect of the page-like MnCo 2O 4.5 catalyst on the hydrogen storage performance of MgH 2. Inorg Chem Front 2022. [DOI: 10.1039/d2qi01715f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
MnCo2O4.5 is decomposed into a variety of catalytically active substances during the de/hydrogenation process, which greatly promotes the hydrogen storage performance of MgH2.
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Affiliation(s)
- Shiming Zhou
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Dan Wei
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Haiyi Wan
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Xiu Yang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Yujuan Dai
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Yu'an Chen
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
- National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China
| | - Fusheng Pan
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
- National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China
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4
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Tong X. Computational Study of the Effect of Doping with Ti on NaAlH4 Nanocluster Dehydrogenation. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s0036024421080276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Ahmed A, Siegel DJ. Predicting hydrogen storage in MOFs via machine learning. PATTERNS (NEW YORK, N.Y.) 2021; 2:100291. [PMID: 34286305 PMCID: PMC8276024 DOI: 10.1016/j.patter.2021.100291] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/10/2021] [Accepted: 05/26/2021] [Indexed: 11/14/2022]
Abstract
The H2 capacities of a diverse set of 918,734 metal-organic frameworks (MOFs) sourced from 19 databases is predicted via machine learning (ML). Using only 7 structural features as input, ML identifies 8,282 MOFs with the potential to exceed the capacities of state-of-the-art materials. The identified MOFs are predominantly hypothetical compounds having low densities (<0.31 g cm-3) in combination with high surface areas (>5,300 m2 g-1), void fractions (∼0.90), and pore volumes (>3.3 cm3 g-1). The relative importance of the input features are characterized, and dependencies on the ML algorithm and training set size are quantified. The most important features for predicting H2 uptake are pore volume (for gravimetric capacity) and void fraction (for volumetric capacity). The ML models are available on the web, allowing for rapid and accurate predictions of the hydrogen capacities of MOFs from limited structural data; the simplest models require only a single crystallographic feature.
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Affiliation(s)
- Alauddin Ahmed
- Mechanical Engineering Department, University of Michigan, Ann Arbor, MI 48109, USA
| | - Donald J. Siegel
- Mechanical Engineering Department, University of Michigan, Ann Arbor, MI 48109, USA
- Materials Science & Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- Applied Physics Program, University of Michigan, Ann Arbor, MI 48109, USA
- University of Michigan Energy Institute, University of Michigan, Ann Arbor, MI 48109, USA
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6
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Wegner W, Zakrzewski JJ, Zychowicz M, Chorazy S. Incorporation of expanded organic cations in dysprosium(III) borohydrides for achieving luminescent molecular nanomagnets. Sci Rep 2021; 11:11354. [PMID: 34059691 PMCID: PMC8166919 DOI: 10.1038/s41598-021-88446-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 04/05/2021] [Indexed: 11/09/2022] Open
Abstract
Luminescent single-molecule magnets (SMMs) constitute a class of molecular materials offering optical insight into magnetic anisotropy, magnetic switching of emission, and magnetic luminescent thermometry. They are accessible using lanthanide(III) complexes with advanced organic ligands or metalloligands. We present a simple route to luminescent SMMs realized by the insertion of well-known organic cations, tetrabutylammonium and tetraphenylphosphonium, into dysprosium(III) borohydrides, the representatives of metal borohydrides investigated due to their hydrogen storage properties. We report two novel compounds, [n-Bu4N][DyIII(BH4)4] (1) and [Ph4P][DyIII(BH4)4] (2), involving DyIII centers surrounded by four pseudo-tetrahedrally arranged BH4- ions. While 2 has higher symmetry and adopts a tetragonal unit cell (I41/a), 1 crystallizes in a less symmetric monoclinic unit cell (P21/c). They exhibit yellow room-temperature photoluminescence related to the f-f electronic transitions. Moreover, they reveal DyIII-centered magnetic anisotropy generated by the distorted arrangement of four borohydride anions. It leads to field-induced slow magnetic relaxation, well-observed for the magnetically diluted samples, [n-Bu4N][YIII0.9DyIII0.1(BH4)4] (1@Y) and [Ph4P][YIII0.9DyIII0.1(BH4)4] (2@Y). 1@Y exhibits an Orbach-type relaxation with an energy barrier of 26.4(5) K while only the onset of SMM features was found in 2@Y. The more pronounced single-ion anisotropy of DyIII complexes of 1 was confirmed by the results of the ab initio calculations performed for both 1-2 and the highly symmetrical inorganic DyIII borohydrides, α/β-Dy(BH4)3, 3 and 4. The magneto-luminescent character was achieved by the implementation of large organic cations that lower the symmetry of DyIII centers inducing single-ion anisotropy and separate them in the crystal lattice enabling the emission property. These findings are supported by the comparison with 3 and 4, crystalizing in cubic unit cells, which are not emissive and do not exhibit SMM behavior.
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Affiliation(s)
- Wojciech Wegner
- College of Inter-Faculty Individual Studies in Mathematics and Natural Sciences, University of Warsaw, Banacha 2c, 02-097, Warsaw, Poland.
- Center of New Technologies, University of Warsaw, Banacha 2c, 02-097, Warsaw, Poland.
| | - Jakub J Zakrzewski
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland
| | - Mikolaj Zychowicz
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland
| | - Szymon Chorazy
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland.
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Demir S, Tekin A. FFCASP: A Massively Parallel Crystal Structure Prediction Algorithm. J Chem Theory Comput 2021; 17:2586-2598. [PMID: 33798330 DOI: 10.1021/acs.jctc.0c01197] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A new algorithm called Fast and Flexible CrystAl Structure Predictor (FFCASP) was developed to predict the structure of covalent and molecular crystals. FFCASP is massively parallel and able to handle more than 200 atoms in the unit cell (in other terms, it allows global optimization around 100 individual parameters). It uses a global optimizer specialized for Crystal Structure Prediction (CSP) which combines particle swarm and simulated annealing optimizers. Three different molecular crystals, including diverse intermolecular interactions, namely, cytosine, coumarin, and pyrazinamide, have been selected to evaluate the performance of FFCASP. While cytosine polymorphs have been searched by employing two different force fields (a DFT-SAPT based intermolecular potential and generalized amber force field (GAFF)) up to Z = 16, only GAFF has been used both in coumarin and pyrazinamide polymorph searches up to Z = 4. For these three molecular crystals, FFCASP generated more than 20 000 crystal structures, and the unique ones have been further treated by DFT-D3. A combination of data mining and a machine learning approach was introduced to determine the unique structures and their distribution into different clusters, which ultimately gives an opportunity to retrieve the common features and relations between the resulting structures. There are two known experimental crystal structures of cytosine, and both were successfully located with FFCASP. Two of the reported crystal structures of coumarin have been reproduced. Similarly, in pyrazinamide, three known experimental structures have been rediscovered. In addition to finding the experimentally known structures, FFCASP also located other low-energy structures for each considered molecular crystals. These successes of FFCASP offer the possibility to discover the polymorphic nature of other important molecular crystals (e.g., drugs) as well.
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Affiliation(s)
- Samet Demir
- Informatics Institute, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey.,TÜBİTAK Research Institute for Fundamental Sciences, 41470 Gebze, Kocaeli, Turkey
| | - Adem Tekin
- Informatics Institute, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey.,TÜBİTAK Research Institute for Fundamental Sciences, 41470 Gebze, Kocaeli, Turkey
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8
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Synthesis, Polymorphism and Thermal Decomposition Process of (n-C 4H 9) 4N RE(BH 4) 4 for RE = Ho, Tm and Yb. MATERIALS 2021; 14:ma14061329. [PMID: 33801892 PMCID: PMC7999646 DOI: 10.3390/ma14061329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/26/2021] [Accepted: 03/04/2021] [Indexed: 11/16/2022]
Abstract
In total, three novel organic derivatives of lanthanide borohydrides, n-But4NRE(BH4)4 (TBAREB), RE = Ho, Tm, Yb, have been prepared utilizing mechanochemical synthesis and purified via solvent extraction. Studies by single crystal and powder X-ray diffraction (SC-XRD and PXRD) revealed that they crystalize in two polymorphic forms, α- and β-TBAREB, adopting monoclinic (P21/c) and orthorhombic (Pnna) unit cells, previously found in TBAYB and TBAScB, respectively. Thermal decomposition of these compounds has been investigated using thermogravimetric analysis and differential scanning calorimetry (TGA/DSC) measurements, along with the analysis of the gaseous products with mass spectrometry (MS) and with analysis of the solid decomposition products with PXRD. TBAHoB and TBAYbB melt around 75 °C, which renders them new ionic liquids with relatively low melting points among borohydrides.
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Wittmann TI, Musina EI, Litvinov IA, Karasik AA, Sinyashin OG. Synthesis of a 16-Membered P4N2 Macrocycle with Pyridyl-Substituted Phosphorus Atoms. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218110336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Schneemann A, White JL, Kang S, Jeong S, Wan LF, Cho ES, Heo TW, Prendergast D, Urban JJ, Wood BC, Allendorf MD, Stavila V. Nanostructured Metal Hydrides for Hydrogen Storage. Chem Rev 2018; 118:10775-10839. [PMID: 30277071 DOI: 10.1021/acs.chemrev.8b00313] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Knowledge and foundational understanding of phenomena associated with the behavior of materials at the nanoscale is one of the key scientific challenges toward a sustainable energy future. Size reduction from bulk to the nanoscale leads to a variety of exciting and anomalous phenomena due to enhanced surface-to-volume ratio, reduced transport length, and tunable nanointerfaces. Nanostructured metal hydrides are an important class of materials with significant potential for energy storage applications. Hydrogen storage in nanoscale metal hydrides has been recognized as a potentially transformative technology, and the field is now growing steadily due to the ability to tune the material properties more independently and drastically compared to those of their bulk counterparts. The numerous advantages of nanostructured metal hydrides compared to bulk include improved reversibility, altered heats of hydrogen absorption/desorption, nanointerfacial reaction pathways with faster rates, and new surface states capable of activating chemical bonds. This review aims to summarize the progress to date in the area of nanostructured metal hydrides and intends to understand and explain the underpinnings of the innovative concepts and strategies developed over the past decade to tune the thermodynamics and kinetics of hydrogen storage reactions. These recent achievements have the potential to propel further the prospects of tuning the hydride properties at nanoscale, with several promising directions and strategies that could lead to the next generation of solid-state materials for hydrogen storage applications.
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Affiliation(s)
- Andreas Schneemann
- Sandia National Laboratories , Livermore , California 94551 , United States
| | - James L White
- Sandia National Laboratories , Livermore , California 94551 , United States
| | - ShinYoung Kang
- Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
| | - Sohee Jeong
- Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Liwen F Wan
- Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
| | - Eun Seon Cho
- Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States.,Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Tae Wook Heo
- Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
| | - David Prendergast
- Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Jeffrey J Urban
- Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Brandon C Wood
- Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
| | - Mark D Allendorf
- Sandia National Laboratories , Livermore , California 94551 , United States
| | - Vitalie Stavila
- Sandia National Laboratories , Livermore , California 94551 , United States
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11
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Starobrat A, Jaroń T, Grochala W. New hydrogen-rich ammonium metal borohydrides, NH 4[M(BH 4) 4], M = Y, Sc, Al, as potential H 2 sources. Dalton Trans 2018; 47:4442-4448. [PMID: 29505047 DOI: 10.1039/c7dt03926c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Three metal-ammonium borohydrides, NH4[M(BH4)4] M = Y, Sc, Al, denoted 1, 2, 3, respectively, were prepared via a low temperature mechanochemical synthesis and characterized using PXRD, FTIR and TGA/DSC/MS. The compounds 1 and 2 adopt the P21/c space group while the compound 3 crystallizes in an orthorhombic unit cell (Fddd). The first decomposition step of all three derivatives of ammonium borohydride has the maximum rate at 48 °C, 53 °C and 35 °C for 1, 2 and 3, respectively, which are comparable to that for NH4BH4 (53 °C). The thermal decomposition of these metal-ammonium borohydrides is a multistep process, with predominantly exothermic low-temperature stages. The compound 1 decomposes via known Y(BH4)3, however, some of the solid decomposition products of the other two compounds have not been fully identified. In the system containing compound 2, a new, more dense polymorph of the previously reported LiSc(BH4)4 has been detected as the intermediate of slow decomposition at room temperature.
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Affiliation(s)
- A Starobrat
- College of Inter-Faculty Individual Studies in Mathematics and Natural Sciences (MISMaP), University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland
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12
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Shinagawa T, Takanabe K. Towards Versatile and Sustainable Hydrogen Production through Electrocatalytic Water Splitting: Electrolyte Engineering. CHEMSUSCHEM 2017; 10:1318-1336. [PMID: 27984671 PMCID: PMC5413865 DOI: 10.1002/cssc.201601583] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/15/2016] [Indexed: 05/22/2023]
Abstract
Recent advances in power generation from renewable resources necessitate conversion of electricity to chemicals and fuels in an efficient manner. Electrocatalytic water splitting is one of the most powerful and widespread technologies. The development of highly efficient, inexpensive, flexible, and versatile water electrolysis devices is desired. This review discusses the significance and impact of the electrolyte on electrocatalytic performance. Depending on the circumstances under which the water splitting reaction is conducted, the required solution conditions, such as the identity and molarity of ions, may significantly differ. Quantitative understanding of such electrolyte properties on electrolysis performance is effective to facilitate the development of efficient electrocatalytic systems. The electrolyte can directly participate in reaction schemes (kinetics), affect electrode stability, and/or indirectly impact the performance by influencing the concentration overpotential (mass transport). This review aims to guide fine-tuning of the electrolyte properties, or electrolyte engineering, for (photo)electrochemical water splitting reactions.
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Affiliation(s)
- Tatsuya Shinagawa
- KAUST Catalysis Center and Physical Sciences and Engineering DivisionKing Abdullah University of Science and Technology (KAUST)4700 KAUSTThuwal23955-6900Saudi Arabia
| | - Kazuhiro Takanabe
- KAUST Catalysis Center and Physical Sciences and Engineering DivisionKing Abdullah University of Science and Technology (KAUST)4700 KAUSTThuwal23955-6900Saudi Arabia
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13
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Bai H, Bai B, Zhang L, Huang W, Mu YW, Zhai HJ, Li SD. Lithium-Decorated Borospherene B 40: A Promising Hydrogen Storage Medium. Sci Rep 2016; 6:35518. [PMID: 27752102 PMCID: PMC5067665 DOI: 10.1038/srep35518] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 09/26/2016] [Indexed: 12/21/2022] Open
Abstract
The recent discovery of borospherene B40 marks the onset of a new kind of boron-based nanostructures akin to the C60 buckyball, offering opportunities to explore materials applications of nanoboron. Here we report on the feasibility of Li-decorated B40 for hydrogen storage using the DFT calculations. The B40 cluster has an overall shape of cube-like cage with six hexagonal and heptagonal holes and eight close-packing B6 triangles. Our computational data show that Lim&B40(1-3) complexes bound up to three H2 molecules per Li site with an adsorption energy (AE) of 0.11-0.25 eV/H2, ideal for reversible hydrogen storage and release. The bonding features charge transfer from Li to B40. The first 18 H2 in Li6&B40(3) possess an AE of 0.11-0.18 eV, corresponding to a gravimetric density of 7.1 wt%. The eight triangular B6 corners are shown as well to be good sites for Li-decoration and H2 adsorption. In a desirable case of Li14&B40-42 H2(8), a total of 42 H2 molecules are adsorbed with an AE of 0.32 eV/H2 for the first 14 H2 and 0.12 eV/H2 for the third 14 H2. A maximum gravimetric density of 13.8 wt% is achieved in 8. The Li-B40-nH2 system differs markedly from the previous Li-C60-nH2 and Ti-B40-nH2 complexes.
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Affiliation(s)
- Hui Bai
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - Bing Bai
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - Lin Zhang
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - Wei Huang
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - Yue-Wen Mu
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, Shanxi, China
| | - Hua-Jin Zhai
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, Shanxi, China.,State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, Shanxi, China
| | - Si-Dian Li
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, Shanxi, China
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14
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Wegner W, Jaroń T, Dobrowolski MA, Dobrzycki Ł, Cyrański MK, Grochala W. Organic derivatives of Mg(BH4)2 as precursors towards MgB2 and novel inorganic mixed-cation borohydrides. Dalton Trans 2016; 45:14370-7. [PMID: 27545862 DOI: 10.1039/c6dt02239a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of organic derivatives of magnesium borohydride, including Mg(BH4)2·1.5DME (DME = 1,2-dimethoxyethane) and Mg(BH4)2·3THF (THF = tetrahydrofuran) solvates and three mixed-cation borohydrides, [Cat]2[Mg(BH4)4], [Cat] = [Me4N], [nBu4N], [Ph4P], have been characterized. The phosphonium derivative has been tested as a precursor for synthesis of inorganic mixed-metal borohydrides of magnesium, Mx[Mg(BH4)2+x], M = Li-Cs, via a metathetic method. The synthetic procedure has yielded two new derivatives of heavier alkali metals M3Mg(BH4)5 (M = Rb, Cs) mixed with amorphous Mg(BH4)2. Thermal decomposition has been studied for both the organic and inorganic magnesium borohydride derivatives. Amorphous MgB2 has been detected among the products of the thermal decomposition of the solvates studied, together with organic and inorganic impurities.
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Affiliation(s)
- W Wegner
- Centre of New Technologies, University of Warsaw, Żwirki i Wigury 93, 02089 Warsaw, Poland.
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15
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Starobrat A, Tyszkiewicz MJ, Wegner W, Pancerz D, Orłowski PA, Leszczyński PJ, Fijalkowski KJ, Jaroń T, Grochala W. Salts of highly fluorinated weakly coordinating anions as versatile precursors towards hydrogen storage materials. Dalton Trans 2016; 44:19469-77. [PMID: 26242623 DOI: 10.1039/c5dt02005k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We report the most recent results related to application of a metathetic pathway towards mixed-metal borohydrides. The synthetic protocol utilizes highly-fluorinated weakly coordinating anion salts as precursors. We discuss the technicalities related to the use of fluorine-rich anions as well as the improvements which are still needed to deliver high-purity materials with potential applications for hydrogen storage. The applicability of the method is expanded beyond the previously described complex borohydrides of alkali metal Zn or Y, towards the systems containing Mg(II), Sc(III), Mn(II), or Eu(III). We have prepared for the first time [Ph4P]2[Mn(BH4)4] and [Me4N]2[Mg(BH4)4], solved their crystal structures from powder x-ray diffraction, and used selected organic metal borohydride derivatives as precursors towards mixed-metal borohydrides (K2Mn(BH4)4, Rb3Mg(BH4)5, etc.). We have also prepared [Ph4P][Eu(BH4)4], which is the first derivative of Eu(III) in the homoleptic environment of borohydride anions.
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Affiliation(s)
- A Starobrat
- Faculty of Physics, University of Warsaw, Pasteura 5, 02093 Warsaw, Poland
| | - M J Tyszkiewicz
- Inter-faculty Studies in Mathematics and Natural Sciences, Żwirki i Wigury 93, 02089 Warsaw, Poland
| | - W Wegner
- Faculty of Physics, University of Warsaw, Pasteura 5, 02093 Warsaw, Poland
| | - D Pancerz
- Faculty of Physics, University of Warsaw, Pasteura 5, 02093 Warsaw, Poland
| | - P A Orłowski
- Faculty of Physics, University of Warsaw, Pasteura 5, 02093 Warsaw, Poland
| | - P J Leszczyński
- Centre of New Technologies, University of Warsaw, Żwirki i Wigury 93, 02089 Warsaw, Poland.
| | - K J Fijalkowski
- Centre of New Technologies, University of Warsaw, Żwirki i Wigury 93, 02089 Warsaw, Poland.
| | - T Jaroń
- Centre of New Technologies, University of Warsaw, Żwirki i Wigury 93, 02089 Warsaw, Poland.
| | - W Grochala
- Centre of New Technologies, University of Warsaw, Żwirki i Wigury 93, 02089 Warsaw, Poland.
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16
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Sahle CJ, Kujawski S, Remhof A, Yan Y, Stadie NP, Al-Zein A, Tolan M, Huotari S, Krisch M, Sternemann C. In situ characterization of the decomposition behavior of Mg(BH4)2 by X-ray Raman scattering spectroscopy. Phys Chem Chem Phys 2016; 18:5397-403. [PMID: 26818950 DOI: 10.1039/c5cp06571b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We present an in situ study of the thermal decomposition of Mg(BH4)2 in a hydrogen atmosphere of up to 4 bar and up to 500 °C using X-ray Raman scattering spectroscopy at the boron K-edge and the magnesium L2,3-edges. The combination of the fingerprinting analysis of both edges yields detailed quantitative information on the reaction products during decomposition, an issue of crucial importance in determining whether Mg(BH4)2 can be used as a next-generation hydrogen storage material. This work reveals the formation of reaction intermediate(s) at 300 °C, accompanied by a significant hydrogen release without the occurrence of stable boron compounds such as amorphous boron or MgB12H12. At temperatures between 300 °C and 400 °C, further hydrogen release proceeds via the formation of higher boranes and crystalline MgH2. Above 400 °C, decomposition into the constituting elements takes place. Therefore, at moderate temperatures, Mg(BH4)2 is shown to be a promising high-density hydrogen storage material with great potential for reversible energy storage applications.
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17
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Muthu RN, Rajashabala S, Kannan R. Facile synthesis and characterization of a reduced graphene oxide/halloysite nanotubes/hexagonal boron nitride (RGO/HNT/h-BN) hybrid nanocomposite and its potential application in hydrogen storage. RSC Adv 2016. [DOI: 10.1039/c6ra13865a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The hydrogen storage performance of hybrid nanocomposites composed of reduced graphene oxide, acid treated halloysite nanotubes and hexagonal boron nitride nanoparticles (RGO/A-HNT/h-BN) was studied.
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Affiliation(s)
- R. Naresh Muthu
- School of Physics
- Madurai Kamaraj University
- Madurai-625021
- India
| | - S. Rajashabala
- School of Physics
- Madurai Kamaraj University
- Madurai-625021
- India
| | - R. Kannan
- Department of Physics
- University College of Engineering
- Anna University
- Dindigul-624622
- India
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18
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Owarzany R, Fijalkowski KJ, Jaroń T, Leszczyński PJ, Dobrzycki Ł, Cyrański MK, Grochala W. Complete Series of Alkali-Metal M(BH3NH2BH2NH2BH3) Hydrogen-Storage Salts Accessed via Metathesis in Organic Solvents. Inorg Chem 2015; 55:37-45. [DOI: 10.1021/acs.inorgchem.5b01688] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rafał Owarzany
- Faculty of Chemistry, University of Warsaw, ul. Pasteura
1, 02-093 Warsaw, Poland
| | - Karol J. Fijalkowski
- Centre
of New Technologies, University of Warsaw, ul. Zwirki i Wigury 93, 02-089 Warsaw, Poland
| | - Tomasz Jaroń
- Centre
of New Technologies, University of Warsaw, ul. Zwirki i Wigury 93, 02-089 Warsaw, Poland
| | - Piotr J. Leszczyński
- Centre
of New Technologies, University of Warsaw, ul. Zwirki i Wigury 93, 02-089 Warsaw, Poland
| | - Łukasz Dobrzycki
- Faculty of Chemistry, University of Warsaw, ul. Pasteura
1, 02-093 Warsaw, Poland
| | - Michał K. Cyrański
- Faculty of Chemistry, University of Warsaw, ul. Pasteura
1, 02-093 Warsaw, Poland
| | - Wojciech Grochala
- Centre
of New Technologies, University of Warsaw, ul. Zwirki i Wigury 93, 02-089 Warsaw, Poland
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19
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Posligua V, Urbina A, Rincón L, Soetens JC, Méndez M, Zambrano C, Torres F. Theoretical evaluation of metal-functionalized rccc R-pyrogallol[4]arenes as media for molecular hydrogen storage. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2015.08.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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20
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Synthesis and characterization of a series of mixed-cation borohydrides of scandium: [ Cat ][Sc(BH 4 ) 4 ], [ Cat ] = [Me 4 N], [ n -Bu 4 N], and [Ph 4 P]. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.08.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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Lai Q, Paskevicius M, Sheppard DA, Buckley CE, Thornton AW, Hill MR, Gu Q, Mao J, Huang Z, Liu HK, Guo Z, Banerjee A, Chakraborty S, Ahuja R, Aguey-Zinsou KF. Hydrogen Storage Materials for Mobile and Stationary Applications: Current State of the Art. CHEMSUSCHEM 2015; 8:2789-2825. [PMID: 26033917 DOI: 10.1002/cssc.201500231] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 03/10/2015] [Indexed: 06/04/2023]
Abstract
One of the limitations to the widespread use of hydrogen as an energy carrier is its storage in a safe and compact form. Herein, recent developments in effective high-capacity hydrogen storage materials are reviewed, with a special emphasis on light compounds, including those based on organic porous structures, boron, nitrogen, and aluminum. These elements and their related compounds hold the promise of high, reversible, and practical hydrogen storage capacity for mobile applications, including vehicles and portable power equipment, but also for the large scale and distributed storage of energy for stationary applications. Current understanding of the fundamental principles that govern the interaction of hydrogen with these light compounds is summarized, as well as basic strategies to meet practical targets of hydrogen uptake and release. The limitation of these strategies and current understanding is also discussed and new directions proposed.
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Affiliation(s)
- Qiwen Lai
- MERLin Group, School of Chemical Engineering, The University of New South Wales, Sydney NSW 2052 (Australia), Fax: (+61) 02-938-55966
| | - Mark Paskevicius
- Department of Chemistry and iNANO, Aarhus University, Aarhus 8000 (Denmark)
- Department of Physics, Astronomy and Medical Radiation Sciences, Curtin University, Bentley WA 6102 (Australia)
| | - Drew A Sheppard
- Department of Physics, Astronomy and Medical Radiation Sciences, Curtin University, Bentley WA 6102 (Australia)
| | - Craig E Buckley
- Department of Physics, Astronomy and Medical Radiation Sciences, Curtin University, Bentley WA 6102 (Australia)
| | | | - Matthew R Hill
- CSIRO, Private Bag 10, Clayton South MDC, VIC 3169 (Australia)
| | - Qinfen Gu
- Australian Synchrotron, Clayton, VIC 3168 (Australia)
| | - Jianfeng Mao
- Institute for Superconducting and Electronic Materials, Innovation Campus, University of Wollongong, Squires Way, NSW 2500 (Australia)
| | - Zhenguo Huang
- Institute for Superconducting and Electronic Materials, Innovation Campus, University of Wollongong, Squires Way, NSW 2500 (Australia)
| | - Hua Kun Liu
- Institute for Superconducting and Electronic Materials, Innovation Campus, University of Wollongong, Squires Way, NSW 2500 (Australia)
| | - Zaiping Guo
- Institute for Superconducting and Electronic Materials, Innovation Campus, University of Wollongong, Squires Way, NSW 2500 (Australia)
| | - Amitava Banerjee
- Condensed Matter Theory Group, Department of Physics & Astronomy, Uppsala University, Box 516, 75120 Uppsala (Sweden)
| | - Sudip Chakraborty
- Condensed Matter Theory Group, Department of Physics & Astronomy, Uppsala University, Box 516, 75120 Uppsala (Sweden)
| | - Rajeev Ahuja
- Condensed Matter Theory Group, Department of Physics & Astronomy, Uppsala University, Box 516, 75120 Uppsala (Sweden)
| | - Kondo-Francois Aguey-Zinsou
- MERLin Group, School of Chemical Engineering, The University of New South Wales, Sydney NSW 2052 (Australia), Fax: (+61) 02-938-55966.
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22
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Musina EI, Fesenko TI, Strelnik ID, Polyancev FM, Latypov SK, Lönnecke P, Hey-Hawkins E, Karasik AA, Sinyashin OG. Synthesis and unique reversible splitting of 14-membered cyclic aminomethylphosphines on to 7-membered heterocycles. Dalton Trans 2015; 44:13565-72. [PMID: 26135988 DOI: 10.1039/c5dt01910a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A novel type of 14-membered cyclic polyphosphine, namely 1,8-diaza-3,6,10,13-tetraphosphacyclotetradecanes 2a–4ahas been synthesized by the condensation of 1,2-bis(phenylphosphino)ethane, formaldehyde and alkylamines (isopropylamine, ethylamine and cyclohexylamine) as a RRRR/SSSS-stereoisomer. The structure of macrocycle 2a was investigated by NMR-spectroscopy and X-ray crystal structure analysis. The unique reversible processes of macrocycles 2a–4a splitting onto the corresponding rac- (2b–4b) and meso- (2c–4c) stereoisomers of 1-aza-3,6-diphosphacycloheptanes were discovered.
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Affiliation(s)
- Elvira I Musina
- A.E. Arbuzov Institute of Organic and Physical Chemistry of KSC RAS, Arbuzov str. 8, Kazan, 420088, Russian Federation.
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23
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Lian Z, Xu P, Wang W, Zhang D, Xiao S, Li X, Li G. C60-decorated CdS/TiO2 mesoporous architectures with enhanced photostability and photocatalytic activity for H2 evolution. ACS APPLIED MATERIALS & INTERFACES 2015; 7:4533-40. [PMID: 25658952 DOI: 10.1021/am5088665] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Fullerene (C60) enhanced mesoporous CdS/TiO2 architectures were fabricated by an evaporation induced self-assembly route together with an ion-exchanged method. C60 clusters were incorporated into the pore wall of mesoporous CdS/TiO2 with the formation of C60 enhanced CdS/TiO2 hybrid architectures, for achieving the enhanced photostability and photocatalytic activity in H2 evolution under visible-light irradiation. Such greatly enhanced photocatalytic performance and photostability could be due to the strong combination and heterojunctions between C60 and CdS/TiO2. The as-formed C60 cluster protection layers in the CdS/TiO2 framework not only improve the light absorption capability, but also greatly accelerated the photogenerated electron transfer to C60 clusters for H2 evolution.
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Affiliation(s)
- Zichao Lian
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Life and Environmental Science, Shanghai Normal University , Shanghai, 200234, People's Republic of China
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24
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25
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Jaroń T, Wegner W, Fijałkowski KJ, Leszczyński PJ, Grochala W. Facile formation of thermodynamically unstable novel borohydride materials by a wet chemistry route. Chemistry 2015; 21:5689-92. [PMID: 25676615 DOI: 10.1002/chem.201404968] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Indexed: 11/11/2022]
Abstract
A novel wet synthetic method utilizing weakly coordinating anions that yields LiCl-free Zn-based materials for hydrogen storage has recently been reported. Here we show that this method may also be applied for the synthesis of the pure yttrium derivatives, M[Y(BH4)4] (M = K, Rb, Cs). Moreover, it can be extended to the preparation of previously unknown thermodynamically unstable derivatives, Li[Y(BH4)4] and Na[Y(BH4)4]. Importantly, these two H-rich phases cannot be accessed by standard dry (mechanochemical) or solid/gas synthetic methods due to the thermodynamic obstacles. Here we describe their crystal structures and selected important physicochemical properties.
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Affiliation(s)
- Tomasz Jaroń
- Center of New Technologies, University of Warsaw, Żwirki i Wigury 93, 02-089 Warsaw (Poland).
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26
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27
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28
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Fijalkowski KJ, Jaroń T, Leszczyński PJ, Magos-Palasyuk E, Palasyuk T, Cyrański MK, Grochala W. M(BH3NH2BH2NH2BH3) – the missing link in the mechanism of the thermal decomposition of light alkali metal amidoboranes. Phys Chem Chem Phys 2014; 16:23340-6. [DOI: 10.1039/c4cp03296a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a novel family of hydrogen-rich materials – alkali metal di(amidoborane)borohydrides, M(BH3NH2BH2NH2BH3).
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Affiliation(s)
| | - T. Jaroń
- Center of New Technologies
- University of Warsaw
- 02-089 Warsaw, Poland
| | | | - E. Magos-Palasyuk
- Institute of Physical Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw, Poland
| | - T. Palasyuk
- Institute of Physical Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw, Poland
| | - M. K. Cyrański
- Faculty of Chemistry
- University of Warsaw
- 02-093 Warsaw, Poland
| | - W. Grochala
- Center of New Technologies
- University of Warsaw
- 02-089 Warsaw, Poland
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29
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Demirci UB, Miele P. Cobalt-based catalysts for the hydrolysis of NaBH4 and NH3BH3. Phys Chem Chem Phys 2014; 16:6872-85. [DOI: 10.1039/c4cp00250d] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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30
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Moc J. Dissociation of multiple hydrogen molecules on the three-dimensional aluminium cluster: theoretical study. Theor Chem Acc 2013. [DOI: 10.1007/s00214-013-1378-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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31
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Caputo R, Kupczak A, Sikora W, Tekin A. Ab initio crystal structure prediction by combining symmetry analysis representations and total energy calculations. An insight into the structure of Mg(BH4)2. Phys Chem Chem Phys 2013; 15:1471-80. [DOI: 10.1039/c2cp43090h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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32
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Caputo R, Tekin A. Lithium Dihydroborate: First-Principles Structure Prediction of LiBH2. Inorg Chem 2012; 51:9757-65. [DOI: 10.1021/ic301127q] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Riccarda Caputo
- ETH Zürich, Swiss Federal Institute of Technology, Department of Chemistry
and Applied Biosciences, Lab Inorganic Chemistry, Wolfgang-Pauli Strasse
10, CH-8093 Zürich, Switzerland
| | - Adem Tekin
- Istanbul Technical University, Informatics Institute, 34469 Maslak, Istanbul, Turkey
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33
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Jaroń T, Wegner W, Cyrański M, Dobrzycki Ł, Grochala W. Tetrabutylammonium cation in a homoleptic environment of borohydride ligands: [(n-Bu)4N][BH4] and [(n-Bu)4N][Y(BH4)4]. J SOLID STATE CHEM 2012. [DOI: 10.1016/j.jssc.2012.03.040] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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34
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Bio-inspired chemical hydrogen storage and discharge as a source of electrical energy. J APPL ELECTROCHEM 2012. [DOI: 10.1007/s10800-012-0415-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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35
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Ljubić I, Clary DC. Quasiclassical trajectory calculations of hydrogen absorption in the (NaAlH4)2Ti system on a model analytical potential energy surface. Phys Chem Chem Phys 2012; 14:3915-21. [DOI: 10.1039/c2cp23689c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Hanlon JM, Reardon H, Tapia-Ruiz N, Gregory DH. The Challenge of Storage in the Hydrogen Energy Cycle: Nanostructured Hydrides as a Potential Solution. Aust J Chem 2012. [DOI: 10.1071/ch11437] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Hydrogen has the capacity to provide society with the means to carry ‘green’ energy between the point of generation and the point of use. A sustainable energy society in which a hydrogen economy predominates will require renewable generation provided, for example, by artificial photosynthesis and clean, efficient energy conversion effected, for example, by hydrogen fuel cells. Vital in the hydrogen cycle is the ability to store hydrogen safely and effectively. Solid-state storage in hydrides enables this but no material yet satisfies all the demands associated with storage density and hydrogen release and uptake; particularly for mobile power. Nanochemical design methods present potential routes to overcome the thermodynamic and kinetic hurdles associated with solid state storage in hydrides. In this review we discuss strategies of nanosizing, nanoconfinement, morphological/dimensional control, and application of nanoadditives on the hydrogen storage performance of metal hydrides. We present recent examples of how such approaches can begin to address the challenges and an evaluation of prospects for further development.
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37
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Valdés Á, Brillet J, Grätzel M, Gudmundsdóttir H, Hansen HA, Jónsson H, Klüpfel P, Kroes GJ, Le Formal F, Man IC, Martins RS, Nørskov JK, Rossmeisl J, Sivula K, Vojvodic A, Zäch M. Solar hydrogen production with semiconductor metal oxides: new directions in experiment and theory. Phys Chem Chem Phys 2012; 14:49-70. [DOI: 10.1039/c1cp23212f] [Citation(s) in RCA: 177] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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38
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Pichierri F. Binding of molecular hydrogen to halide anions: A computational exploration of eco-friendly materials for hydrogen storage. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2011.11.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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39
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Schröder D. Energy partitioning in single-electron transfer events between gaseous dications and their neutral counterparts. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2012; 18:139-148. [PMID: 22641725 DOI: 10.1255/ejms.1161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Electron-transfer reactions between hydrocarbon dications and neutral hydrocarbons lead to an unequal deposition of the excess energy from the reaction in the pair of monocations formed. The initial observation of this phenomenon was explained by the different states accessible upon single-electron capture by a dication compared to single-electron ejection from a neutral compound. Alternatively, however, isomeric structures of the dicationic species, pronounced Franck-Condon effects, as well as excess energy in the dicationic precursors could cause the asymmetric energy partitioning in such dication/neutral collisions. Here, the investigation of this phenomenon in an interdisciplinary cooperation is described, shedding light not only upon a possible solution of the problem at hand, but also providing an example for the synergistic benefits of international research networks applying complementary approaches.
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Affiliation(s)
- Detlef Schröder
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague, Czech Republic.
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