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Structural differences and adsorption behaviour of alkaline metals doped zinc oxide nanoparticles. Sci Rep 2022; 12:2292. [PMID: 35145149 PMCID: PMC8831499 DOI: 10.1038/s41598-022-06092-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 11/01/2021] [Indexed: 11/09/2022] Open
Abstract
Nanotechnology plays a vital role in all the scientific fields including environmental research due to their surface: volume ratio compared to bulk materials. Recent studies prove their effectiveness as pollutant removal and remediation practices. Zinc oxide (ZnO) nanoparticles a multifunctional material with distinct properties and their doped counterparts were widely being studied in different fields of science. However, its application in environmental waste treatment is starting to gain attention due to its low cost and high productivity. Heavy metal pollution is one of the major pollutants affecting aquatic and terrestrial life forms. Pollution in water bodies has also raised alarming concerns in the past decades. Most of the heavy metals are essential elements in trace amounts and omnipresent in the environment, causing toxicity for living organisms, for instance, nickel. In our work, we analysed the prospect of selective removal of nickel ions by different alkaline metals (K+, Rb+, and Cs+) doped zinc oxide nanoparticles fabricated by different treatment methods (as-prepared and heat-treated). We found morphological variations from flower like to rod like owing to the alkaline cations of the dopants. In addition, the crystal structure and its different fractions presented amorphous content of the fabricated samples increased from 2 to 10 wt% with respect to the atomic radius of dopant in as-prepared samples and not present in heat-treated samples. We report, how the structure and the sample composition directly affected their adsorption behaviour towards Nickel ions in aqueous solutions based on the micro and nano zincite ratio of the ZnO particles.
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Kuranaga Y, Matsui H, Ikehata A, Shimoda Y, Noiri M, Ho YL, Delaunay JJ, Teramura Y, Tabata H. Enhancing Detection Sensitivity of ZnO-Based Infrared Plasmonic Sensors Using Capped Dielectric Ga 2O 3 Layers for Real-Time Monitoring of Biological Interactions. ACS APPLIED BIO MATERIALS 2020; 3:6331-6342. [PMID: 35021763 DOI: 10.1021/acsabm.0c00792] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Surface plasmon resonances on Ga-doped ZnO (ZnO/Ga) layer surfaces (ZnO-SPRs) have attracted substantial attention as alternative plasmonic materials in the infrared range. We present further enhancement of the detection limits of ZnO-SPRs to monitor biological interactions by introducing thin dielectric layers into ZnO-SPRs, which remarkably modify the electric fields and the corresponding decay lengths on the sensing surfaces. The presence of a high-permittivity dielectric layer of Ga2O3 provides high wavelength sensitivities of the ZnO-SPRs due to the strongly confined electric fields. The superior sensing capabilities of the proposed samples were verified by real-time monitoring of the biological interactions between biotin and streptavidin molecules. Introduction of the high-permittivity dielectric layer into ZnO-SPRs effectively enhances the detection sensitivity and therefore allowed for the observation of biological interactions. This paper provides useful information for the development of optical detection techniques for use in biological fields based on ZnO from the viewpoints of plasmonic applications.
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Affiliation(s)
- Yasuhiro Kuranaga
- Department of Bioengineering, The University of Tokyo, 1-3-7 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hiroaki Matsui
- Department of Bioengineering, The University of Tokyo, 1-3-7 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.,Department of Electrical Engineering and Information Systems, The University of Tokyo, 1-3-7 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Akifumi Ikehata
- Food Research Institute, National Agriculture and Food Research Organization, 1-1-3 Kannondai, Tsukuba, Ibaraki 305-8517, Japan
| | - Yuta Shimoda
- Department of Bioengineering, The University of Tokyo, 1-3-7 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Makoto Noiri
- Department of Bioengineering, The University of Tokyo, 1-3-7 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.,Department of Materials Engineering, The University of Tokyo, 1-3-7 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Ya-Lun Ho
- Department of Mechanical Engineering, The University of Tokyo, 1-3-7 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Jean-Jacques Delaunay
- Department of Mechanical Engineering, The University of Tokyo, 1-3-7 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yuji Teramura
- Department of Bioengineering, The University of Tokyo, 1-3-7 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.,Department of Materials Engineering, The University of Tokyo, 1-3-7 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.,Department of Immunology, Genetics and Pathology (IGP), Uppsala University, Dag Hammarskjölds väg 20, Uppsala SE-751 85, Sweden
| | - Hitoshi Tabata
- Department of Bioengineering, The University of Tokyo, 1-3-7 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.,Department of Electrical Engineering and Information Systems, The University of Tokyo, 1-3-7 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Lau BTG, Berkelbach TC. Quantum plasmons and intraband excitons in doped nanoparticles: Insights from quantum chemistry. J Chem Phys 2020; 152:224704. [PMID: 32534544 DOI: 10.1063/5.0006429] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We use excited-state quantum chemistry techniques to investigate the intraband absorption of doped semiconductor nanoparticles as a function of doping density, nanoparticle radius, and material properties. Modeling the excess electrons as interacting electrons confined to a sphere, we find that the excitation evolves from single-particle to plasmonic with increasing number of electrons at fixed density, and the threshold number of electrons to produce a plasmon increases with density due to quantum confinement and electron-hole attraction. In addition, the excitation passes through an intermediate regime where it is best characterized as an intraband exciton. We compare equation-of-motion coupled-cluster theory with those of more affordable single-excitation theories and identify the inclusion of electron-hole interactions as essential to describing the evolution of the excitation. Despite the simplicity of our model, the results are in reasonable agreement with the experimental spectra of doped ZnO nanoparticles at a doping density of 1.4 × 1020 cm-3. Based on our quantum chemistry calculations, we develop a schematic model that captures the dependence of the excitation energy on nanoparticle radius and electron density.
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Affiliation(s)
- Bryan T G Lau
- Department of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, USA
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Goubet N, Jagtap A, Livache C, Martinez B, Portalès H, Xu XZ, Lobo RPSM, Dubertret B, Lhuillier E. Terahertz HgTe Nanocrystals: Beyond Confinement. J Am Chem Soc 2018; 140:5033-5036. [DOI: 10.1021/jacs.8b02039] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nicolas Goubet
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France
- LPEM, ESPCI Paris, PSL University, CNRS, F-75005 Paris, France
- Sorbonne Université, CNRS, LPEM, F-75005 Paris, France
| | - Amardeep Jagtap
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France
| | - Clément Livache
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France
- LPEM, ESPCI Paris, PSL University, CNRS, F-75005 Paris, France
- Sorbonne Université, CNRS, LPEM, F-75005 Paris, France
| | - Bertille Martinez
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France
- LPEM, ESPCI Paris, PSL University, CNRS, F-75005 Paris, France
- Sorbonne Université, CNRS, LPEM, F-75005 Paris, France
| | - Hervé Portalès
- Sorbonne Université, CNRS, De la Molécule aux Nano-objets: Réactivité, Interactions et Spectroscopies, MONARIS, F-75005 Paris, France
| | - Xiang Zhen Xu
- LPEM, ESPCI Paris, PSL University, CNRS, F-75005 Paris, France
- Sorbonne Université, CNRS, LPEM, F-75005 Paris, France
| | - Ricardo P. S. M. Lobo
- LPEM, ESPCI Paris, PSL University, CNRS, F-75005 Paris, France
- Sorbonne Université, CNRS, LPEM, F-75005 Paris, France
| | - Benoit Dubertret
- LPEM, ESPCI Paris, PSL University, CNRS, F-75005 Paris, France
- Sorbonne Université, CNRS, LPEM, F-75005 Paris, France
| | - Emmanuel Lhuillier
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France
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