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Chakrabarty S, Jasuja K. Insights into the Unanticipated Chemical Reactivity of Functionalized Nanosheets Derived from TiB 2. Inorg Chem 2024; 63:1524-1536. [PMID: 38064651 DOI: 10.1021/acs.inorgchem.3c03010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Titanium diboride (TiB2) is a member of the AlB2-type layered metal boride family; the materials of this family are receiving renewed research interest owing to their amenability to nanoscaling. Earlier, we showed that TiB2 can be nanoscaled to yield quasi 2D nanostructures following a dissolution-recrystallization approach. This approach yielded nanosheets that were chemically functionalized with oxy-functional groups. Also, these nanosheets could inherently form a gel-like substance. In this work, we show that these functionalized nanosheets can interact with ascorbic acid in a way that first imparts a characteristic orange hue to the original yellowish nanosheet dispersion. Second, this interaction results in the loss of gel-like behavior of the nanosheet dispersion. We utilize several spectroscopic techniques such as UV-visible, FT-IR, NMR, EPR, XPS, and XANES to unravel this unexplored chemical interaction. The findings show that both titania as well as oxy-boron species react with ascorbic acid, leading to a profound modification of the nanosheets. This modification results in an augmented electrochemical response, implying that the modified nanosheets can be used in novel applications. This study is therefore a step toward gaining an even deeper understanding of the chemical opportunities that these nanoscaled borides can provide.
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Affiliation(s)
- Satadru Chakrabarty
- Department of Chemical Engineering, Indian Institute of Technology Gandhinagar, Gandhinagar, 382055 Gujarat, India
| | - Kabeer Jasuja
- Department of Chemical Engineering, Indian Institute of Technology Gandhinagar, Gandhinagar, 382055 Gujarat, India
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2
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Kumawat A, Jasuja K, Ghoroi C. TiB 2-Derived Nanosheets Enhance the Tensile Strength and Controlled Drug Release of Biopolymeric Films Used in Wound Healing. ACS APPLIED BIO MATERIALS 2023; 6:4111-4126. [PMID: 37796555 DOI: 10.1021/acsabm.3c00101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
Wound healing using an alginate-based biopolymeric film is one of the most preferred treatments. However, these films lack mechanical strength (elasticity and tensile strength), show higher initial burst release, and exhibit high vapor permeability. The present study reports the development of nanosheets derived from titanium diboride (10 nm) (NTB)-incorporated biopolymeric films (0.025, 0.05, and 0.1% w/v) using sodium alginate (SA) and carboxymethyl cellulose (CMC) to overcome the shortfalls. The surface properties of the film, nanosheet distribution within the film, and possible interactions with the film are explored by using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Fourier transform infrared (FTIR), and X-ray diffraction (XRD). These analyses confirm that nanosheets are uniformly distributed in the film and introduce unevenness on the film's surface. The tensile strength of the nanosheet-incorporated film (0.1% NTB film) using UTM is found to be 24.30 MPa (six times higher compared to the blank film), equivalent to human skin. The water vapor transmission rate of the film is also found to be in the desired range (i.e., 2000-2500 g/m2 day). The biocompatibility of the NTB film is confirmed by the MTT assay test using NIH/3T3 cells and HEK 293 cells. Furthermore, the scratch assay shows that the developed films promote cell migration and proliferation. The antibacterial activity of the film is also demonstrated using a model drug, tetracycline hydrochloride (TCl). Besides, the film exhibits the sustained release of TCl and follows the Korsmeyer-Peppas model for drug release. Overall, the 0.1% w/v NTB film is easy to fabricate, biocompatible and shows superior mechanical properties.
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Affiliation(s)
- Akshant Kumawat
- DryProTech Lab. and BoRN Research Lab, Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382055, Gujarat, India
| | - Kabeer Jasuja
- DryProTech Lab. and BoRN Research Lab, Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382055, Gujarat, India
| | - Chinmay Ghoroi
- DryProTech Lab. and BoRN Research Lab, Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382055, Gujarat, India
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3
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Rasyotra A, Thakur A, Mandalia R, Ranganathan R, Jasuja K. Nitrogen adsorption via charge transfer on vacancies created during surfactant assisted exfoliation of TiB 2. NANOSCALE 2023; 15:8204-8216. [PMID: 36967617 DOI: 10.1039/d2nr06676a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Titanium diboride (TiB2), a layered ceramic material, comprised of titanium atoms sandwiched in between honeycomb planes of boron atoms, exhibits a promising structure to utilize the rich chemistry offered by the synergy of titanium and boron. TiB2 has been primarily investigated and applied in its bulk form. This perspective is, however, fast evolving with a number of efforts aimed at exfoliating TiB2. Here, we show that it is possible to delaminate TiB2 into ultrathin, minimally functionalized nanosheets with the aid of surfactants. These nanosheets exhibit crystalline nature and their chemical analysis reveals vacant sites within the nanosheets. These vacancies facilitate the chemisorption of N2 onto the TiB2 nanosheets under ambient conditions without the aid of any energy, this finding was unexpected. This remarkable activity of TiB2 nanosheets is attributed to vacancies and the Ti-B synergy, which enhance the adsorption and activation of N2. We obtained supplemental insights into the N2 adsorption by Density Functional Theory (DFT) studies, which reveal how charge transfer among Ti, B, and N2 results in N2 adsorption. The DFT studies also show that nanosheets having more vacancies result in increased adsorption when compared with nanosheets having less vacancies and bulk TiB2.
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Affiliation(s)
- Anshul Rasyotra
- Discipline of Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India.
| | - Anupma Thakur
- Discipline of Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India.
| | - Raviraj Mandalia
- Discipline of Materials Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India
| | - Raghavan Ranganathan
- Discipline of Materials Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India
| | - Kabeer Jasuja
- Discipline of Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India.
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Gunda H, Ray KG, Klebanoff LE, Dun C, Marple MAT, Li S, Sharma P, Friddle RW, Sugar JD, Snider JL, Horton RD, Davis BC, Chames JM, Liu YS, Guo J, Mason HE, Urban JJ, Wood BC, Allendorf MD, Jasuja K, Stavila V. Hydrogen Storage in Partially Exfoliated Magnesium Diboride Multilayers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205487. [PMID: 36470595 DOI: 10.1002/smll.202205487] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/26/2022] [Indexed: 06/17/2023]
Abstract
Metal boride nanostructures have shown significant promise for hydrogen storage applications. However, the synthesis of nanoscale metal boride particles is challenging because of their high surface energy, strong inter- and intraplanar bonding, and difficult-to-control surface termination. Here, it is demonstrated that mechanochemical exfoliation of magnesium diboride in zirconia produces 3-4 nm ultrathin MgB2 nanosheets (multilayers) in high yield. High-pressure hydrogenation of these multilayers at 70 MPa and 330 °C followed by dehydrogenation at 390 °C reveals a hydrogen capacity of 5.1 wt%, which is ≈50 times larger than the capacity of bulk MgB2 under the same conditions. This enhancement is attributed to the creation of defective sites by ball-milling and incomplete Mg surface coverage in MgB2 multilayers, which disrupts the stable boron-boron ring structure. The density functional theory calculations indicate that the balance of Mg on the MgB2 nanosheet surface changes as the material hydrogenates, as it is energetically favorable to trade a small number of Mg vacancies in Mg(BH4 )2 for greater Mg coverage on the MgB2 surface. The exfoliation and creation of ultrathin layers is a promising new direction for 2D metal boride/borohydride research with the potential to achieve high-capacity reversible hydrogen storage at more moderate pressures and temperatures.
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Affiliation(s)
- Harini Gunda
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
- Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat, 382355, India
| | - Keith G Ray
- Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, CA, 94550, USA
| | | | - Chaochao Dun
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Maxwell A T Marple
- Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, CA, 94550, USA
| | - Sichi Li
- Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, CA, 94550, USA
| | - Peter Sharma
- Sandia National Laboratories, 1515 Eubank SE, Albuquerque, NM, 87185, USA
| | - Raymond W Friddle
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Joshua D Sugar
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Jonathan L Snider
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Robert D Horton
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Brendan C Davis
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Jeffery M Chames
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Yi-Sheng Liu
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jinghua Guo
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Harris E Mason
- Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, CA, 94550, USA
| | - Jeffrey J Urban
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Brandon C Wood
- Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, CA, 94550, USA
| | - Mark D Allendorf
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Kabeer Jasuja
- Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat, 382355, India
| | - Vitalie Stavila
- Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
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Li S, Gunda H, Ray KG, Wong CS, Xiao P, Friddle RW, Liu YS, Kang S, Dun C, Sugar JD, Kolasinski RD, Wan LF, Baker AA, Lee JRI, Urban JJ, Jasuja K, Allendorf MD, Stavila V, Wood BC. Spontaneous dynamical disordering of borophenes in MgB 2 and related metal borides. Nat Commun 2021; 12:6268. [PMID: 34725350 PMCID: PMC8560812 DOI: 10.1038/s41467-021-26512-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 09/29/2021] [Indexed: 11/30/2022] Open
Abstract
Layered boron compounds have attracted significant interest in applications from energy storage to electronic materials to device applications, owing in part to a diversity of surface properties tied to specific arrangements of boron atoms. Here we report the energy landscape for surface atomic configurations of MgB2 by combining first-principles calculations, global optimization, material synthesis and characterization. We demonstrate that contrary to previous assumptions, multiple disordered reconstructions are thermodynamically preferred and kinetically accessible within exposed B surfaces in MgB2 and other layered metal diborides at low boron chemical potentials. Such a dynamic environment and intrinsic disordering of the B surface atoms present new opportunities to realize a diverse set of 2D boron structures. We validated the predicted surface disorder by characterizing exfoliated boron-terminated MgB2 nanosheets. We further discuss application-relevant implications, with a particular view towards understanding the impact of boron surface heterogeneity on hydrogen storage performance. Layered boron compounds attract enormous interest in applications. This work reports first-principles calculations coupled with global optimization to show that the outer boron surface in MgB2 nanosheets undergo disordering and clustering, which is experimentally confirmed in synthesized MgB2 nanosheets.
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Affiliation(s)
- Sichi Li
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA.
| | - Harini Gunda
- Sandia National Laboratories, Livermore, CA, 94551, USA.,Department of Chemical Engineering, Indian Institute of Technology, Gandhinagar, Gujarat, 382355, India
| | - Keith G Ray
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | | | - Penghao Xiao
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | | | - Yi-Sheng Liu
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - ShinYoung Kang
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Chaochao Dun
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | | | | | - Liwen F Wan
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Alexander A Baker
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Jonathan R I Lee
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Jeffrey J Urban
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Kabeer Jasuja
- Department of Chemical Engineering, Indian Institute of Technology, Gandhinagar, Gujarat, 382355, India
| | | | | | - Brandon C Wood
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA.
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Gilliam MS, Yousaf A, Guo Y, Li DO, Momenah A, Wang QH, Green AA. Evaluating the Exfoliation Efficiency of Quasi-2D Metal Diboride Nanosheets Using Hansen Solubility Parameters. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1194-1205. [PMID: 33423497 DOI: 10.1021/acs.langmuir.0c03138] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Non-van der Waals (non-vdW) solids are emerging sources of two-dimensional (2D) nanosheets that can be produced via liquid-phase exfoliation (LPE), and are beginning to expand our understanding of 2D and quasi-2D materials. Recently, nanosheets formed by LPE processing of bulk metal diborides, a diverse family of layered non-vdW ceramic materials, have been reported. However, detailed knowledge of the exfoliation efficiency of these nanomaterials is lacking, and is important for their effective solution-phase processing and for understanding their fundamental surface chemistry, since they have significant differences from more conventional nanosheets produced from layered vdW compounds. Here in this paper we use Hansen solubility theory to investigate nanosheets of the metal borides CrB2 and MgB2 derived from LPE. By preparing dispersions in 33 different solvents, we determine Hansen solubility parameters (δD, δP, δH) for both these metal diborides. We find that they exhibit notably higher δP and δH values compared to conventional vdW materials such as graphene and MoS2, likely as a result of the types of bonds broken in such materials from exfoliation which allows for more favorable interactions with more polar and hydrogen-bonding solvents. We apply the solubility parameters to identify cosolvent blends suitable for CrB2 and MgB2 that produce dispersions with concentrations that match or exceed those of the top-performing individual solvents for each material and that have markedly higher stability compared to the constituent solvents of the blends alone. This work provides insight into the exfoliation effectiveness of different solvents for preparation of nanosheets from metal diborides and non-vdW materials in general. Such knowledge will be crucial for developing liquid-phase exfoliation strategies for incorporating these materials in applications such as nanocomposites, inks, and coatings.
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Affiliation(s)
- Matthew S Gilliam
- Biodesign Center for Molecular Design and Biomimetics, The Biodesign Institute and the School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Ahmed Yousaf
- Biodesign Center for Molecular Design and Biomimetics, The Biodesign Institute and the School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Yuqi Guo
- Materials Science and Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Duo O Li
- Materials Science and Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - AbdulAziz Momenah
- Materials Science and Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Qing Hua Wang
- Materials Science and Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Alexander A Green
- Biodesign Center for Molecular Design and Biomimetics, The Biodesign Institute and the School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
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