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Nagai T, Mauliana A, Kobayashi K, Yamaguchi A, Miyazaki K, Yang Y, Takeshita J, Fujita T, Sunada K, Ishiguro H, Kondo T, Miyauchi M. Broad-spectrum antimicrobial effects of hydrogen boride nanosheets. J Mater Chem B 2025. [PMID: 40266560 DOI: 10.1039/d4tb02854f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/24/2025]
Abstract
Hydrogen boride (HB) nanosheets are novel 2D materials that have found application in various fields such as electronics, energy storage, and catalysis. The present study describes the novel antimicrobial effects of HB nanosheets. Transparent thin films of HB coated on a glass substrate inactivate pathogens, such as the omicron variant of SARS-CoV-2, influenza virus, feline calicivirus, and bacteriophages. The infectious titer of these microbes decreases to the detection limit within 10 min in the dark at room temperature. The antiviral function of the HB nanosheets is retained in the absence of moisture, mimicking the environment of dry surfaces. The HB nanosheets also inactivate bacteria and fungi such as Escherichia coli, Staphylococcus aureus, Aspergillus niger, and Penicillium pinophilum. We discussed the mechanism of the broad-spectrum antimicrobial function of HB nanosheets based on the physicochemical properties of HB nanosheets. Denaturation of microbial agents is derived from strong physicochemical interactions between the protein molecules in the pathogens and the surface of the HB films. The present study reports important new properties of HB nanosheets and demonstrates their utility in protecting against the spread of disease on a pandemic scale.
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Affiliation(s)
- Takeshi Nagai
- Kanagawa Institute of Industrial Science and Technology, Kawasaki, Kanagawa, 210-0821, Japan.
| | - Andi Mauliana
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, Meguro, Tokyo, 152-8552, Japan.
| | - Keiichi Kobayashi
- Kanagawa Institute of Industrial Science and Technology, Kawasaki, Kanagawa, 210-0821, Japan.
| | - Akira Yamaguchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, Meguro, Tokyo, 152-8552, Japan.
| | - Keisuke Miyazaki
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, Meguro, Tokyo, 152-8552, Japan.
| | - Yue Yang
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, Meguro, Tokyo, 152-8552, Japan.
| | - Jumpei Takeshita
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, Meguro, Tokyo, 152-8552, Japan.
| | - Takeshi Fujita
- School of Engineering Science, Kochi University of Technology, Kochi 782-8502, Japan
| | - Kayano Sunada
- Kanagawa Institute of Industrial Science and Technology, Kawasaki, Kanagawa, 210-0821, Japan.
| | - Hitoshi Ishiguro
- Kanagawa Institute of Industrial Science and Technology, Kawasaki, Kanagawa, 210-0821, Japan.
| | - Takahiro Kondo
- Department of Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, Japan.
- The Advanced Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan
- Hydrogen Boride Research Center and Tsukuba Research Center for Energy Materials Science, Institute of Pure and Applied Sciences and R&D Center for Zero CO2 Emission with Functional Materials, University of Tsukuba, Tsukuba 305-8573, Japan
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, Meguro, Tokyo, 152-8552, Japan.
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Zhao K, Janulaitis N, Rumptz JR, Campbell CT. Size-Dependent Energy and Adhesion of Pd Nanoparticles on Graphene on Ni(111) by Pd Vapor Adsorption Calorimetry. ACS Catal 2023. [DOI: 10.1021/acscatal.2c06343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- Kun Zhao
- Department of Chemistry, University of Washington, Seattle, Washington98105-1700, United States
- Advanced Institute for Materials Research, Tohoku University, Sendai, Miyagi980-8577, Japan
| | - Nida Janulaitis
- Department of Chemical Engineering, University of Washington, Seattle, Washington98105-1700, United States
| | - John R. Rumptz
- Department of Chemical Engineering, University of Washington, Seattle, Washington98105-1700, United States
| | - Charles T. Campbell
- Department of Chemistry, University of Washington, Seattle, Washington98105-1700, United States
- Department of Chemical Engineering, University of Washington, Seattle, Washington98105-1700, United States
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Rumptz JR, Zhao K, Mayo J, Campbell CT. Size-Dependent Energy of Ni Nanoparticles on Graphene Films on Ni(111) and Adhesion Energetics by Adsorption Calorimetry. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- John R. Rumptz
- Department of Chemical Engineering, and University of Washington, Seattle, Washington 98105-1700, United States
| | - Kun Zhao
- Department of Chemistry, and University of Washington, Seattle, Washington 98105-1700, United States
| | - Jackson Mayo
- Department of Chemistry, and University of Washington, Seattle, Washington 98105-1700, United States
| | - Charles T. Campbell
- Department of Chemical Engineering, and University of Washington, Seattle, Washington 98105-1700, United States
- Department of Chemistry, and University of Washington, Seattle, Washington 98105-1700, United States
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Kawamura R, Cuong NT, Fujita T, Ishibiki R, Hirabayashi T, Yamaguchi A, Matsuda I, Okada S, Kondo T, Miyauchi M. Photoinduced hydrogen release from hydrogen boride sheets. Nat Commun 2019; 10:4880. [PMID: 31653945 PMCID: PMC6814783 DOI: 10.1038/s41467-019-12903-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 10/07/2019] [Indexed: 11/09/2022] Open
Abstract
Hydrogen boride nanosheets (HB sheets) are facilely synthesized via ion-exchange treatment on magnesium diboride (MgB2) in an acetonitrile solution. Optical absorption and fluorescence spectra of HB sheets indicate that their bandgap energy is 2.8 eV. According to first-principles calculations, optical absorption seen at 2.8 eV is assigned to the electron transition between the σ-bonding states of B and H orbitals. In addition, density functional theory (DFT) calculations suggest the other allowed transition from the σ-bonding state of B and H orbitals to the antibonding state with the gap of 3.8 eV. Significant gaseous H2 release is found to occur only under photoirradiation, which causes the electron transition from the σ-bonding state to the antibonding state even under mild ambient conditions. The amount of H2 released from the irradiated HB sheets is estimated to be 8 wt%, indicating that the sheets have a high H2-storage capacity compared with previously reported metal H2-storage materials.
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Affiliation(s)
- Reiya Kawamura
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo, 152-8552, Japan
| | - Nguyen Thanh Cuong
- Department of Physics, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8571, Japan
| | - Takeshi Fujita
- School of Environmental Science and Engineering, Kochi University of Technology, Kochi, 782-8502, Japan
| | - Ryota Ishibiki
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8573, Japan
| | - Toru Hirabayashi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo, 152-8552, Japan
| | - Akira Yamaguchi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo, 152-8552, Japan
| | - Iwao Matsuda
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - Susumu Okada
- Department of Physics, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8571, Japan
| | - Takahiro Kondo
- Department of Materials Science and Tsukuba Research Center for Energy Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8573, Japan. .,Materials Research Center for Element Strategy, Tokyo Institute of Technology, Yokohama, 226-8503, Japan.
| | - Masahiro Miyauchi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo, 152-8552, Japan.
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