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Burak D, Rahman MA, Seo DC, Byun JY, Han J, Lee SE, Cho SH. In Situ Metal Deposition on Perhydropolysilazane-Derived Silica for Structural Color Surfaces with Antiviral Activity. ACS APPLIED MATERIALS & INTERFACES 2023; 15:54143-54156. [PMID: 37942676 DOI: 10.1021/acsami.3c12622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Structural coloration has recently sparked considerable attention on the laboratory and industrial scale. Structural colors can create vivid, saturated, and long-lasting colors on metallic surfaces for optical filters, digital displays, and surface decoration. This study used an all-solution, low-cost method, free of a specific setup procedure, to fabricate structural colors of a multilayered metal-dielectric structure based on interference effects within a Fabry-Perot cavity. The insulating (dielectric) layer was produced from perhydropolysilazane, an inorganic silicon-containing polymer, from which hydrogen was liberated during conversion into silica and applied in situ to reduce metallic nanoparticles on the silica surface. This simple manufacturing technique contributes to the fabrication of large, high-quality surfaces, which could potentially be employed for surface decoration. The fabricated surfaces also exhibited excellent hydrophobic properties with contact angles up to 137°, endowing them with self-cleaning properties. In addition, the antiviral and antibacterial impact of the silver (Ag)/silica (SiO2)/stainless steel (SUS) film was also examined, as Ag has been reported to have antimicrobial and, recently, antiviral properties. According to three independently conducted antiviral assays, the fluorescence expression of virus-infected cells, PCR analysis, and modified tissue culture infectious dose assay, the film inhibited lentivirus by 75, 97, and 99% when exposed to the virus for 20 min, 1 h, and 20 min, respectively. Furthermore, the film had exceptional antibacterial activity with no colony growth observed for 24 and 12 h of inoculation. It is thus conceivable that these structural color-based films can be used to not only decorate metal surfaces with aesthetic colors but also limit virus and bacterium propagation successfully.
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Affiliation(s)
- Darya Burak
- Materials Architecturing Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seoul 02792, Republic of Korea
- Division of Nano & Information Technology (Nanomaterials Science and Engineering), University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Md Abdur Rahman
- Extreme Materials Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seoul 02792, Republic of Korea
| | - Dong-Chan Seo
- Research Animal Resources Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seoul 02792, Republic of Korea
| | - Ji Young Byun
- Extreme Materials Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seoul 02792, Republic of Korea
| | - Joonsoo Han
- Materials Architecturing Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seoul 02792, Republic of Korea
| | - Seung Eun Lee
- Research Animal Resources Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seoul 02792, Republic of Korea
| | - So-Hye Cho
- Materials Architecturing Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seoul 02792, Republic of Korea
- Division of Nano & Information Technology (Nanomaterials Science and Engineering), University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
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2
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Al Soubaihi RM, Saoud KM, Awadallah-F A, Elkhatat AM, Al-Muhtaseb SA, Dutta J. Investigation of palladium catalysts in mesoporous silica support for CO oxidation and CO 2 adsorption. Heliyon 2023; 9:e18354. [PMID: 37539214 PMCID: PMC10393765 DOI: 10.1016/j.heliyon.2023.e18354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 07/10/2023] [Accepted: 07/14/2023] [Indexed: 08/05/2023] Open
Abstract
The oxidation of Carbon monoxide (CO) to Carbon dioxide (CO2) is one of the most extensively investigated reactions in the field of heterogeneous catalysis, and it occurs via molecular rearrangements induced by catalytic metal atoms with oxygen intermediates. CO oxidation and CO2 capture are instrumental processes in the reduction of green-house gas emissions, both of which are used in low-temperature CO oxidation in the catalytic converters of vehicles. CO oxidation and CO2 adsorption at different temperatures are evaluated for palladium-supported silica aerogel (Pd/SiO2). The synthesized catalyst was active and stable for low-temperature CO oxidation. The catalytic activity was enhanced after the first cycle due to the reconditioning of the catalyst's pores. It was found that the presence of oxide forms of palladium in the SiO2 microstructure, influences the performance of the catalysts due to oxygen vacancies that increases the frequency of active sites. CO2 gas adsorption onto Pd/SiO2 was investigated at a wide-ranging temperature from 16 to 120 °C and pressures ∼1 MPa as determined from the isotherms that were evaluated, where CO2 showed the highest equilibrium adsorption capacity at 16 °C. The Langmuir model was employed to study the equilibrium adsorption behavior. Finally, the effect of moisture on CO oxidation and CO2 adsorption was considered to account for usage in real-world applications. Overall, mesoporous Pd/SiO2 aerogel shows potential as a material capable of removing CO from the environment and capturing CO2 at low temperatures.
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Affiliation(s)
- Rola Mohammad Al Soubaihi
- Functional NanoMaterials Group, Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology, Hannes Alfvéns väg 12, 11419, Stockholm, Sweden
| | - Khaled Mohammad Saoud
- Virginia Commonwealth University in Qatar, Liberal Arts and Sciences Program, P.O. Box 8095, Doha, Qatar
| | - Ahmed Awadallah-F
- Department of Chemical Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | | | | | - Joydeep Dutta
- Functional NanoMaterials Group, Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology, Hannes Alfvéns väg 12, 11419, Stockholm, Sweden
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3
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Paredi PS, Pandey M, Manohar EM, Tsunoji N, Shahabuddin S, Das S, Bandyopadhyay M. Ni 4 complex anchored porous silica for enhanced adsorption of organic pollutants in the wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27848-8. [PMID: 37269508 DOI: 10.1007/s11356-023-27848-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Accepted: 05/19/2023] [Indexed: 06/05/2023]
Abstract
In the current study, tetranuclear Ni complex [Ni4(LH)4]·CH3CN (1) (LH3=(E)-2-(hydroxymethyl)-6-(((2-hydroxyphenyl)imino)methyl)phenol) was prepared and incorporated in sulfonic acid functionalized MCM-48 material. This composite nanoporous material was investigated for the adsorption of toxic cationic water pollutant dyes like crystal violet (CV) and methylene blue (MB) from the water solution. Thorough characterization was carried out using a variety of techniques, including NMR, ICP, powder XRD, TGA, SEM, BET, and FT-IR, to verify the phase purity, existence of guest moiety, material morphology, and other crucial variables. The adsorption property was increased with the metal complex immobilization on the porous support. The effect of various parameters on the adsorption process was discussed, including adsorbent dosage, temperature, pH, NaCl concentration, and contact time. Maximum dye adsorption was found at 0.2 mg/ml adsorbent dosage, 10 ppm dye concentration, 6-7 pH, 25 °C temperature, and 15 minutes of contact time. The adsorption of MB (methylene blue) and CV (crystal violet) dyes by Ni complex integrated MCM-48 was effective, with over 99% adsorption achieved in 15 minutes. A recyclability test was also performed, and the material is reusable up to the third cycle, with no notable decline in adsorption found. From the previous literature survey, it is clear that very high adsorption efficiency was achieved using MCM-48-SO3-Ni in considerably short contact time which proves the novelty and effectiveness of the modified material. Ni4 was prepared, characterized, and immobilized in sulfonic acid functionalized MCM-48, and this robust and reusable adsorbent was highly effective for the adsorption of methylene blue and crystal violet dyes with >99% adsorption efficiency in short duration.
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Affiliation(s)
- Parikshit Samjubhai Paredi
- Institute of Infrastructure, Technology, Research and Management (IITRAM), Maninagar, Ahmedabad, Gujarat, India
| | - Madhu Pandey
- Institute of Infrastructure, Technology, Research and Management (IITRAM), Maninagar, Ahmedabad, Gujarat, India
| | - Ezhava Manu Manohar
- Institute of Infrastructure, Technology, Research and Management (IITRAM), Maninagar, Ahmedabad, Gujarat, India
| | - Nao Tsunoji
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-, Hiroshima, 739-8527, Japan
| | - Syed Shahabuddin
- Department of Chemistry, School of Energy Technology, Pandit Deendayal Energy University, Raisan, Gujarat, 382426, India
| | - Sourav Das
- Institute of Infrastructure, Technology, Research and Management (IITRAM), Maninagar, Ahmedabad, Gujarat, India
| | - Mahuya Bandyopadhyay
- Institute of Infrastructure, Technology, Research and Management (IITRAM), Maninagar, Ahmedabad, Gujarat, India.
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4
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Teitsworth TS, Hill DJ, Litvin SR, Ritchie ET, Park JS, Custer JP, Taggart AD, Bottum SR, Morley SE, Kim S, McBride JR, Atkin JM, Cahoon JF. Water splitting with silicon p-i-n superlattices suspended in solution. Nature 2023; 614:270-274. [PMID: 36755170 DOI: 10.1038/s41586-022-05549-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/10/2022] [Indexed: 02/10/2023]
Abstract
Photoelectrochemical (PEC) water splitting to produce hydrogen fuel was first reported 50 years ago1, yet artificial photosynthesis has not become a widespread technology. Although planar Si solar cells have become a ubiquitous electrical energy source economically competitive with fossil fuels, analogous PEC devices have not been realized, and standard Si p-type/n-type (p-n) junctions cannot be used for water splitting because the bandgap precludes the generation of the needed photovoltage. An alternative paradigm, the particle suspension reactor (PSR), forgoes the rigid design in favour of individual PEC particles suspended in solution, a potentially low-cost option compared with planar systems2,3. Here we report Si-based PSRs by synthesizing high-photovoltage multijunction Si nanowires (SiNWs) that are co-functionalized to catalytically split water. By encoding a p-type-intrinsic-n-type (p-i-n) superlattice within single SiNWs, tunable photovoltages exceeding 10 V were observed under 1 sun illumination. Spatioselective photoelectrodeposition of oxygen and hydrogen evolution co-catalysts enabled water splitting at infrared wavelengths up to approximately 1,050 nm, with the efficiency and spectral dependence of hydrogen generation dictated by the photonic characteristics of the sub-wavelength-diameter SiNWs. Although initial energy conversion efficiencies are low, multijunction SiNWs bring the photonic advantages of a tunable, mesoscale geometry and the material advantages of Si-including the small bandgap and economies of scale-to the PSR design, providing a new approach for water-splitting reactors.
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Affiliation(s)
- Taylor S Teitsworth
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - David J Hill
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Samantha R Litvin
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Earl T Ritchie
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Jin-Sung Park
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - James P Custer
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Aaron D Taggart
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Samuel R Bottum
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sarah E Morley
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Seokhyoung Kim
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - James R McBride
- Vanderbilt Institute of Nanoscale Science and Engineering, Vanderbilt University, Nashville, TN, USA
| | - Joanna M Atkin
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - James F Cahoon
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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5
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Synthesis of novel tetranuclear Ni complex incorporated mesoporous silica for improved photocatalytic degradation of methylene blue in presence of visible light. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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6
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Echarri-Giacchi M, Martín-Martínez JM. Efficient Physical Mixing of Small Amounts of Nanosilica Dispersion and Waterborne Polyurethane by Using Mild Stirring Conditions. Polymers (Basel) 2022; 14:polym14235136. [PMID: 36501531 PMCID: PMC9735813 DOI: 10.3390/polym14235136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/18/2022] [Accepted: 11/22/2022] [Indexed: 11/30/2022] Open
Abstract
Good dispersion of nanosilica particles in waterborne polyurethane was obtained by mild mechanical stirring when 0.1-0.5 wt.% nanosilica in aqueous dispersion was added. The addition of small amounts of nanosilica produced more negative Z-potential values, increased the surface tension and decreased the Brookfield viscosity, as well as the extent of shear thinning of the waterborne polyurethane. Depending on the amount of nanosilica, the particle-size distributions of the waterborne polyurethanes changed differently and the addition of only 0.1 wt.% nanosilica noticeably increased the percentage of the particles of 298 nm in diameter. The DSC curves showed two melting peaks at 46 °C and 52 °C, as well as an increase in the melting enthalpy. In addition, when nanosilica was added, the crystallization peak of the waterborne polyurethane was displaced to a higher temperature and showed higher enthalpy. Furthermore, the addition of 0.1-0.5 wt.% nanosilica displaced the temperature of decomposition of the soft domains to higher temperatures due to the intercalation of the particles among the soft segments; this led to a change in the degree of phase separation of the waterborne polyurethanes. As a consequence, improved thermal stability and viscoelastic and mechanical properties of the waterborne polyurethanes were obtained. However, the addition of small amounts of nanosilica was detrimental for the wettability and adhesion of the waterborne polyurethanes due to the existence of acrylic moieties on the nanosilica particles, which seemed to migrate to the interface once the polyurethane was cross-linked. In fact, the final T-peel strength values of the joints made with the waterborne polyurethanes containing nanosilica were significantly lower than the one obtained with the waterborne polyurethane without nanosilica; the higher the nanosilica content, the lower the final adhesion. The better the nanosilica dispersion in the waterborne polyurethane+nanosilica, the higher the final T-peel strength value.
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7
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Kulpa-Koterwa A, Ryl J, Górnicka K, Niedziałkowski P. New nanoadsorbent based on magnetic iron oxide containing 1,4,7,10-tetraazacyclododecane in outer chain (Fe3O4@SiO2-cyclen) for adsorption and removal of selected heavy metal ions Cd2+, Pb2+, Cu2+. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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8
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Wang Y, Shi L, Li H, Wang Y, Wang Z, An X, Tang M, Yang G, He J, Hu J, Sun Y. Clean Process to Utilize the Potassium-Containing Phosphorous Rock with Simultaneous HCl and KCl Production via the Steam-Mediated Reactions. ACS OMEGA 2022; 7:24561-24573. [PMID: 35874256 PMCID: PMC9301650 DOI: 10.1021/acsomega.2c02362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this paper, a clean process based on the steam-mediated reactions for simultaneous HCl and KCl production using the potassium (K)-containing phosphorous rock as a precursor is proposed. Through hydrochloric acid (HCl) leaching, not only the generation of H3PO4 and CaCl2 (via further precipitation) were realized but also the acid-insoluble residue [phosphorous-rock slag (PS)] rich in elements, that is, K, Al, Si, and so on, in the form of microcline (KAlSi3O8) and quartz (SiO2) was obtained and became readily available for further HCl and KCl generation. Over 95% of the elements, that is, K, Al, and Si, come into the final products, and the overall acid consumption (based on HCl) is significantly reduced (90%) due to recovery of acids. The impacts of the key operational parameters such as temperature, duration, and reagent impregnate ratio were rigorously analyzed via a supervised machine learning approach, and the optimal conditions were determined [reaction temperature, X1, 850 °C; reaction duration, X2, 40 min; and impregnate ratio (PS over CaCl2), X3, 2.5] with approximately ±10% uncertainties. Thermodynamic analysis indicates that the introduction of steam to PS + CaCl2 not only enhances the chemical potential for the formation of HCl and KCl but also provides the transport advantage in continuously removing the generated products, that is, HCl and KCl, out of the system. Molecular simulation indicates that the presence of both steam and SiO2 in the PS matrix plays critical roles in decomposing PS + CaCl2 at high temperature. The shrinking core model shows that both the intrinsic kinetics and transport are influential with the activation energy being around 14.63 kJ/mol. The potential reaction pathway is postulated.
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Affiliation(s)
- Yunshan Wang
- National
Engineering Research Center of Green Recycling for Strategic Metal
Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Lufang Shi
- Each
Energy Technology (Suzhou) Co., Ltd., Suzhou 215021, China
| | - Houli Li
- School
of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Yixiao Wang
- Key
Laboratory of Carbonaceous Wastes Processing and Process Intensification
of Zhejiang Province, University of Nottingham
Ningbo China, Ningbo 315100, China
| | - Zhiying Wang
- School
of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Xuebin An
- National
Engineering Research Center of Green Recycling for Strategic Metal
Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Mingzhu Tang
- School
of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Gang Yang
- National
Engineering Research Center of Green Recycling for Strategic Metal
Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Jun He
- Nottingham
Ningbo China Beacons of Excellence Research and Innovation Institute, Ningbo 315021, China
- Department
of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo 315100, China
| | - Jing Hu
- Key
Laboratory of Carbonaceous Wastes Processing and Process Intensification
of Zhejiang Province, University of Nottingham
Ningbo China, Ningbo 315100, China
| | - Yong Sun
- School of
Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, Western Australia 6027, Australia
- Department
of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo 315100, China
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9
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Golvari P, Alkameh K, Kuebler SM. Si-H Surface Groups Inhibit Methacrylic Polymerization: Thermal Hydrosilylation of Allyl Methacrylate with Silicon Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8366-8373. [PMID: 35686698 DOI: 10.1021/acs.langmuir.2c00891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Hydrogen-terminated silicon nanoparticles (H-SiNPs) inhibit anerobic thermal autopolymerization of methacrylates. When heated to 100 °C under an inert atmosphere, allyl methacrylate (AMA) was stable for at least 95 h in the presence of 1.2 wt % H-SiNPs, exhibiting less than 0.15% conversion, whereas the neat monomer solidified within 24 h (over 10% conversion after 34 h). A mechanism is proposed that is based on H-transfer from SiNPs to the thermally activated methacrylic dimer biradical, quenching autopolymerization. An analysis of SiNPs isolated after heating in AMA reveals the grafting of ester groups. Thermal hydrosilylation offers a facile way to attach an allyl group to the surface of SiNPs.
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Type-II heterojunction-based magnetic ZnFe2O4@CuFe2O4@SiO2 photocatalyst for photodegradation of toxic dyes from wastewater. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02500-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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11
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Chemical exfoliation of silica filters used on methylene blue degradation by photocatalysis. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02253-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Li Z, Mahajan A, Andaraarachchi HP, Lee Y, Kortshagen UR. Water-Soluble Luminescent Silicon Nanocrystals by Plasma-Induced Acrylic Acid Grafting and PEGylation. ACS APPLIED BIO MATERIALS 2022; 5:105-112. [PMID: 35014827 PMCID: PMC9721497 DOI: 10.1021/acsabm.1c00885] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Luminescent silicon nanocrystals are promising nanomaterials for biomedical applications due to their unique optical properties and biocompatibility. Here, we demonstrate a two-step surface modification approach coupling gas-phase and liquid-phase methods to synthesize PEGylated acrylic acid grafted silicon nanocrystals with near-infrared emission in water and biological media. First, acrylic acid grafted silicon nanocrystals are synthesized by an all-gas-phase approach on a millisecond time scale, omitting high temperature and postpurification processes. Subsequently, room-temperature PEGylation is carried out with these acrylic acid grafted silicon nanocrystals, yielding stable colloidal dispersions in both water and high ionic strength Tyrode's buffer with 20-30 nm hydrodynamic diameters. The PEGylated silicon nanocrystals exhibit photoluminescence in the 650-900 nm near-IR window with quantum yields of ∼30% and ∼13% in deionized water and Tyrode's buffer, respectively, after a 7-day oxidation in water. The surface-functionalized Si NCs exhibit relatively small toxicity to MDA-MB-231 cells at concentrations relevant to bioimaging applications.
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Affiliation(s)
- Zhaohan Li
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Advitiya Mahajan
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Himashi P. Andaraarachchi
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Yeonjoo Lee
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Uwe R. Kortshagen
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
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13
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Irregular Resistive Switching Behaviors of Al2O3-Based Resistor with Cu Electrode. METALS 2021. [DOI: 10.3390/met11040653] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
In this work, we examined the irregular resistive switching behaviors of a complementary metal–oxide–semiconductor (CMOS)-compatible Cu/Al2O3/Si resistor device. X-ray photoelectron spectroscopy (XPS) analysis confirmed the chemical and material compositions of a Al2O3 thin film layer and Si substrate. Bipolar resistive switching occurred in a more stable manner than the unipolar resistive switching in the device did. Five cells were verified over 50 endurance cycles in terms of bipolar resistive switching, and a good retention was confirmed for 10,000 s in the high-resistance state (HRS) and the low-resistance state (LRS). Both high reset current (~10 mA) and low reset current (<100 μA) coexisted in the bipolar resistive switching. We investigated nonideal resistive switching behaviors such as negative-set and current overshoot, which could lead to resistive switching failure.
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14
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Park JH, Eom JH, Lee SL, Hwang SW, Kim SH, Kang SW, Yun JJ, Cho JS, Lee YH, Seo DC. Exploration of the potential capacity of fly ash and bottom ash derived from wood pellet-based thermal power plant for heavy metal removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 740:140205. [PMID: 32569919 DOI: 10.1016/j.scitotenv.2020.140205] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/11/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
This study was conducted to explore the potential capacity for the removal of heavy metals from the fly ash (FA) and bottom ash (BA) emitted by wood pellet thermal power plants. Fly ash consists of inorganic compounds such as CaSiO3, P2O5, and K2O, whereas BA shows properties very similar to the biochar derived from organic biomass. The adsorption properties of both FA and BA for Cd were described well by the Langmuir and pseudo-second-order models, and the maximum adsorption capacity of FA for Cd was 4.2 times higher than that of BA. The results indicate that FA can be applied to the treatment of wastewater that contains heavy metals over pH range from 2-6; however, BA is considered to be most effective for application with wastewater that contains heavy metals at a pH of 5-6. Study of the mechanism concluded that the adsorption of Cd by FA is dominated by the formation of Cd2SiO4 complexes by chemical reactions between CaSiO3 and Cd ions as well as via the precipitation of Cd(OH)2 in the neutral and alkaline solutions that is caused by the dissolution of K. It was found that the adsorption of Cd by BA was influenced by the binding of functional groups (CC and COH), coupled CaCO3 dissolution-CdCO3 precipitation reaction and ion exchange between some minerals with Si and Cd ions in weakly acidic conditions. Results indicate that the FA and BA emitted from wood pellet thermal power plants have high potential for heavy metal removal, and their practical use in the purification and restoration of heavy metals could be an effective way to reduce the waste produced by power plants and clean the environment.
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Affiliation(s)
- Jong-Hwan Park
- Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, South Korea
| | - Ju-Hyun Eom
- Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, South Korea
| | - Su-Lim Lee
- Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, South Korea
| | - Se-Wook Hwang
- Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, South Korea
| | - Seong-Heon Kim
- Soil and Fertilizer Division, National Institute of Agricultural Sciences, Wanju 55365, South Korea
| | - Se-Won Kang
- Department of Bio-Environmental Sciences, Sunchon National University, Suncheon 57922, South Korea
| | - Jin-Ju Yun
- Department of Bio-Environmental Sciences, Sunchon National University, Suncheon 57922, South Korea
| | - Ju-Sik Cho
- Department of Bio-Environmental Sciences, Sunchon National University, Suncheon 57922, South Korea
| | - Young-Han Lee
- Division of Plant Environmental Research, Gyeongsangnam-do Agricultural Research and Extension Service, Jinju 660-360, Republic of Korea
| | - Dong-Cheol Seo
- Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, South Korea.
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15
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Utrera-Barrios S, Araujo-Morera J, Pulido de Los Reyes L, Verdugo Manzanares R, Verdejo R, López-Manchado MÁ, Hernández Santana M. An effective and sustainable approach for achieving self-healing in nitrile rubber. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.110032] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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Jang EH, Pack SP, Kim I, Chung S. A systematic study of hexavalent chromium adsorption and removal from aqueous environments using chemically functionalized amorphous and mesoporous silica nanoparticles. Sci Rep 2020; 10:5558. [PMID: 32221311 PMCID: PMC7101345 DOI: 10.1038/s41598-020-61505-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 02/27/2020] [Indexed: 11/08/2022] Open
Abstract
We report on the synthesis and characterization of highly monodisperse amorphous silica nanoparticles (ASNs) and mesoporous silica nanoparticles (MSNs) with particle sizes of 15-60 nm. We demonstrate adsorption of Cr(VI) ions on amino-functionalized ASNs (NH2-ASNs) and MSNs (NH2-MSNs) and their removal from aqueous environments and show the specific surface area (SSA) of NH2-MSNs is four times as larger as that of NH2-ASNs and that more than 70% of the total SSA of NH2-MSNs is due to the presence of nanopores. Analyses of Cr(VI) adsorption kinetics on NH2-ASNs and NH2-MSNs exhibited relatively rapid adsorption behavior following pseudo-second order kinetics as determined by nonlinear fitting. NH2-ASNs and NH2-MSNs exhibited significantly higher Cr(VI) adsorption capacities of 34.0 and 42.2 mg·g-1 and removal efficiencies of 61.9 and 76.8% than those of unfunctionalized ASNs and MSNs, respectively. The Langmuir model resulted in best fits to the adsorption isotherms of NH2-ASNs and NH2-MSNs. The adsorption of Cr(VI) on NH2-ASNs and NH2-MSNs was an endothermic and spontaneous process according to the thermodynamic analyses of temperature-dependent adsorption isotherms. The removal efficiencies of NH2-ASNs and NH2-MSNs exhibited a moderate reduction of less than 25% of the maximum values after five regeneration cycles. Furthermore, NH2-MSNs were also found to reduce adsorbed Cr(VI) into less harmful Cr(III).
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Affiliation(s)
- Eun-Hye Jang
- School of Chemical and Biomolecular Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, South Korea
- Department of Polymer Science and Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, South Korea
| | - Seung Pil Pack
- Department of Biotechnology and Bioinformatics, Korea University, 2511 Sejong-Ro, Sejong, 30019, South Korea
| | - Il Kim
- Department of Polymer Science and Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, South Korea
| | - Sungwook Chung
- School of Chemical and Biomolecular Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, South Korea.
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17
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Hwang C, Min Y, Seong YJ, Kim DE, Kim HE, Jeong SH. Enhanced biolubrication on biomedical devices using hyaluronic acid-silica nanohybrid hydrogels. Colloids Surf B Biointerfaces 2019; 184:110503. [PMID: 31605949 DOI: 10.1016/j.colsurfb.2019.110503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 09/10/2019] [Accepted: 09/11/2019] [Indexed: 02/02/2023]
Abstract
In this work, highly lubricous hyaluronic acid-silica (HA-SiO2) nanohybrid coatings were fabricated through a sequential process consisting of a sol-gel followed by electrophoretic deposition (EPD). SiO2 nanoparticles were uniformly distributed in the coating layers, and the coating thickness was identified as approximately 1-2 μm regardless of the amount of SiO2. Incorporation of SiO2 into the HA polymer matrix enhanced the mechanical stability of the nanohybrid coatings, indicating greater interfacial bonding strength compared to HA coating layers alone. In addition, due to improved stability, the nanohybrid coatings showed excellent biolubrication properties, which were evaluated with a tribological experiment. These results indicate that the nanohybrid coatings have great potential to be used in biomedical applications that require superior biolubrication properties.
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Affiliation(s)
- Changha Hwang
- Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea
| | - YouJin Min
- Department of Mechanical Engineering, Yonsei University, Seoul, South Korea
| | - Yun-Jeong Seong
- Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea
| | - Dae-Eun Kim
- Department of Mechanical Engineering, Yonsei University, Seoul, South Korea
| | - Hyoun-Ee Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea; Biomedical Implant Convergence Research Center, Advanced Institutes of Convergence Technology, Suwon, South Korea
| | - Seol-Ha Jeong
- Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea.
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18
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Karamikamkar S, Abidli A, Behzadfar E, Rezaei S, Naguib HE, Park CB. The effect of graphene-nanoplatelets on gelation and structural integrity of a polyvinyltrimethoxysilane-based aerogel. RSC Adv 2019; 9:11503-11520. [PMID: 35520268 PMCID: PMC9063430 DOI: 10.1039/c9ra00994a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 03/20/2019] [Indexed: 11/21/2022] Open
Abstract
Aerogels suffer greatly from poor mechanical properties resulting from their particulate structure. They also experience noticeable pore shrinkage during drying due to their low structural integrity. These shortfalls limit their broad application. To enhance the mechanical properties and improve the structural integrity of silica-based aerogels, graphene nanoplatelets (GnPs), as a nanofiller, were embedded into the solution of polymerized vinyltrimethoxysilane (VTMS) to prepare P-VTMS-based silica/GnP (PE-b-Si/GnP) hybrid aerogel monoliths based on sol–gel synthesis and supercritical drying. The inclusion of GnPs in our polymer-based silica aerogel processes reinforced the nanostructure and suppressed PE-b-Si nanopore shrinkage during supercritical drying, thus acting as an effective anti-shrinkage nanofiller. Accordingly, the GnPs significantly contributed to the PE-b-Si solution's uniform gelation and to the change of the hydrophilic nature to a hydrophobic one even with 1 wt% addition. In this study, the influence of the GnP content on the sol–gel process, structure, and physical properties of PE-based silica aerogels is studied. Aerogels suffer greatly from poor mechanical properties resulting from their particulate structure.![]()
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Affiliation(s)
- Solmaz Karamikamkar
- Microcellular Plastics Manufacturing Laboratory
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
| | - Abdelnasser Abidli
- Microcellular Plastics Manufacturing Laboratory
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
| | - Ehsan Behzadfar
- Department of Chemical Engineering
- Lakehead University
- Thunder Bay
- Canada P7B 5E1
| | - Sasan Rezaei
- Microcellular Plastics Manufacturing Laboratory
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
| | - Hani E. Naguib
- Smart Polymers & Composites Lab
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
| | - Chul B. Park
- Microcellular Plastics Manufacturing Laboratory
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
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19
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Mesoporous Silicon Particles Favor the Induction of Long-Lived Humoral Responses in Mice to a Peptide-Based Vaccine. MATERIALS 2018; 11:ma11071083. [PMID: 29949862 PMCID: PMC6073586 DOI: 10.3390/ma11071083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 06/12/2018] [Accepted: 06/13/2018] [Indexed: 01/28/2023]
Abstract
Vaccinology faces the challenge of developing improved immunization approaches that are able to induce long-term immunity with the desired Th profile according to the pathology. In this context, new vehicles for efficient antigen delivery that exert adjuvant effects play a critical role in addressing this goal. Herein, mesoporous silicon particles (PSiP) were assessed as carriers for a peptide-based vaccine targeting the receptor for advanced glycation end products (RAGE), which is a relevant receptor in Alzheimer´s disease and other diseases. A RAGE peptide was adsorbed onto PSiP (PSiP vaccine) and administered to BALB/c mice, leading to immune responses that were similar in magnitude to those induced by the soluble peptide. However, the response induced by PSiP lasted for a significantly longer period when compared with the behavior of the group immunized with the peptide alone. Therefore, PSiP are proposed as carriers to enhance immune memory, which is critical in vaccination. This study opens interesting perspectives related to the application of PSiP in vaccinology.
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20
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Vinoth M, Arunmetha S, Sridharpanday M, Karthik S, Rajendran V. Light trapping and power conversion efficiency of P3HT : nano Si hybrid solar cells. RSC Adv 2018; 8:35162-35169. [PMID: 35547071 PMCID: PMC9087328 DOI: 10.1039/c8ra05440a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 10/04/2018] [Indexed: 11/22/2022] Open
Abstract
In this study, the hybrid solar cells (HSCs) were fabricated with high-purity nano Si from nano SiO2 precursor extracted from natural minerals, that is, quartz sand. The prepared nano Si was used as an electron transport material to prepare an active layer material mixture with poly(3-hexylthiophene) (P3HT) by mixing it in two composition ratios, namely 1 : 1 and 1 : 0.8. The blended active layer solutions (ALSs) were prepared by using solvents such as 1,2-dichlorobenzene (DCB), chlorobenzene (CB), and chloroform (CF). The HSCs were fabricated using six blended ALSs, namely ALS1, ALS2, ALS3, ALS4, ALS5, and ALS6. The current density–voltage characteristics of the fabricated HSCs were studied using a simulated AM 1.5G illumination having light density power of 100 mW cm−2. The characterization properties such as short circuit current density (Jsc) and power conversion efficiency (PCE) were studied and compared with those of all six HSCs fabricated with six blended ALSs. At the outset, the P3HT : nano-Si (1 : 0.8) blended ALS in CB solvent shows 2.37% PCE, and 46% of external quantum efficiency (EQE) absorption which is higher than the other fabricated solar cells. This study discusses the possibilities of preparation of nano Si from natural mineral sand, as an effective electron transport material to fabricate HSCs with enhanced PCE. In this study, the hybrid solar cells (HSCs) were fabricated with high-purity nano Si from nano SiO2 precursor extracted from natural minerals, that is, quartz sand.![]()
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Affiliation(s)
- Murugan Vinoth
- Centre for Nano Science and Technology
- K. S. Rangasamy College of Technology
- Tiruchengode-637215
- India
| | - Sundaramoorthy Arunmetha
- Centre for Nano Science and Technology
- K. S. Rangasamy College of Technology
- Tiruchengode-637215
- India
| | - Mathu Sridharpanday
- Centre for Nano Science and Technology
- K. S. Rangasamy College of Technology
- Tiruchengode-637215
- India
| | - Subramani Karthik
- Centre for Nano Science and Technology
- K. S. Rangasamy College of Technology
- Tiruchengode-637215
- India
| | - Venkatachalam Rajendran
- Centre for Nano Science and Technology
- K. S. Rangasamy College of Technology
- Tiruchengode-637215
- India
- Centre for Nano Science and Technology
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21
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Schmerling M, Fenske D, Peters F, Schwenzel J, Busse M. Lithiation Behavior of Silicon Nanowire Anodes for Lithium-Ion Batteries: Impact of Functionalization and Porosity. Chemphyschem 2017; 19:123-129. [DOI: 10.1002/cphc.201700892] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 09/21/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Marcus Schmerling
- Electrical Energy Storage, Fraunhofer IFAM; Wiener Straße 12 28359 Bremen Germany
| | - Daniela Fenske
- Electrical Energy Storage, Fraunhofer IFAM; Wiener Straße 12 28359 Bremen Germany
| | - Fabian Peters
- Electrical Energy Storage, Fraunhofer IFAM; Wiener Straße 12 28359 Bremen Germany
| | - Julian Schwenzel
- Electrical Energy Storage, Fraunhofer IFAM; Wiener Straße 12 28359 Bremen Germany
| | - Matthias Busse
- Electrical Energy Storage, Fraunhofer IFAM; Wiener Straße 12 28359 Bremen Germany
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22
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Cádiz Bedini AP, Klingebiel B, Luysberg M, Carius R. Sonochemical synthesis of hydrogenated amorphous silicon nanoparticles from liquid trisilane at ambient temperature and pressure. ULTRASONICS SONOCHEMISTRY 2017; 39:883-888. [PMID: 28733019 DOI: 10.1016/j.ultsonch.2017.06.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 05/24/2017] [Accepted: 06/12/2017] [Indexed: 05/27/2023]
Abstract
Silicon nanoparticles (Si-NPs) are increasing in relevance in diverse fields of scientific and nanotechnological inquiry, where currently some of the most important areas of research involve energy storage and biomedical applications. The present article is concerned with a curious and scalable method for the preparation of discrete, unoxidized, hydrogenated, and amorphous Si-NPs of tunable size in the range of 1.5-50nm. Using ultrasound generated with a conventional ultrasonic horn, the "fusion" of Si-NPs is demonstrated at ambient temperature and pressure by sonicating solutions containing readily available, semiconductor-grade purity trisilane (Si3H8). The only requirement for the synthesis is that it be carried out in an inert atmosphere such as that of a N2-filled glove box. Various spectroscopic techniques and electron microscopy images are used to show that the size of the Si-NPs can be controlled by varying the amplitude of the ultrasonic waves or the concentration of trisilane in the solution. Moreover, sustained ultrasonic irradiation is found to yield highly porous Si-NP agglomerates that may find use in applications requiring non-crystalline nanoscopic high specific surface area morphologies.
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Affiliation(s)
- Andrew P Cádiz Bedini
- IEK-5: Photovoltaics, Jülich Research Centre, Wilhelm-Johnen-Str., 52425 Jülich, Germany.
| | - Benjamin Klingebiel
- IEK-5: Photovoltaics, Jülich Research Centre, Wilhelm-Johnen-Str., 52425 Jülich, Germany
| | - Martina Luysberg
- PGI-5: Microstructure Research and Ernst Ruska-Center for Microscopy and Spectroscopy with Electrons, Jülich Research Centre, Wilhelm-Johnen-Str., 52425 Jülich, Germany
| | - Reinhard Carius
- IEK-5: Photovoltaics, Jülich Research Centre, Wilhelm-Johnen-Str., 52425 Jülich, Germany
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23
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Liu Z, Chang X, Wang T, Li W, Ju H, Zheng X, Wu X, Wang C, Zheng J, Li X. Silica-Derived Hydrophobic Colloidal Nano-Si for Lithium-Ion Batteries. ACS NANO 2017; 11:6065-6073. [PMID: 28570805 DOI: 10.1021/acsnano.7b02021] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Silica can be converted to silicon by magnesium reduction. Here, this classical reaction is renovated for more efficient preparation of silicon nanoparticles (nano-Si). By reducing the particle size of the starting materials, the reaction can be completed within 10 min by mechanical milling at ambient temperature. The obtained nano-Si with high surface reactivity are directly reacted with 1-pentanol to form an alkoxyl-functionalized hydrophobic colloid, which significantly simplifies the separation process and minimizes the loss of small Si particles. Nano-Si in 5 g scale can be obtained in one single batch with laboratory scale setups with very high yield of 89%. Utilizing the excellent dispersion in ethanol of the alkoxyl-functionalized nano-Si, surface carbon coating can be readily achieved by using ethanol soluble oligomeric phenolic resin as the precursor. The nano-Si after carbon coating exhibit excellent lithium storage performance comparable to the state of the art Si-based anode materials, featured for the high reversible capacity of 1756 mAh·g-1 after 500 cycles at a current density of 2.1 A·g-1. The preparation approach will effectively promote the development of nano-Si-based anode materials for lithium-ion batteries.
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Affiliation(s)
| | | | | | - Wei Li
- BTR New Energy Materials, Inc. , High Tech Industrial Park, Xitian, Gongming Town, Guangming New District, Shenzhen 518106, China
| | - Haidong Ju
- Department of Chemistry, Kunming University , Kunming 650214, China
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24
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Liu Z, Chang X, Sun B, Yang S, Zheng J, Li X. Room temperature solvent-free reduction of SiCl4 to nano-Si for high-performance Li-ion batteries. Chem Commun (Camb) 2017; 53:6223-6226. [DOI: 10.1039/c7cc02857a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient method to prepare Si nanoparticles for high-performance lithium ion batteries: direct reduction of SiCl4 using Na metal by mechanical milling at room temperature without using any organic solvents.
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Affiliation(s)
- Zhiliang Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- The State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing
| | - Xinghua Chang
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- The State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing
| | - Bingxue Sun
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- The State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing
| | - Sungjin Yang
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- The State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing
| | - Jie Zheng
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- The State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing
| | - Xingguo Li
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- The State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing
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25
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Narayana BL, Mukri BD, P G, Ch. S. Mn Ion substituted CeO2Nano spheres for Low Temperature CO Oxidation: The Promoting Effect of Mn Ions. ChemistrySelect 2016. [DOI: 10.1002/slct.201600152] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Bhaskar Devu Mukri
- Department of Chemistry; Indian Institute of Technology (IIT); Hyderabad 502205 India
| | - Ghosal P
- Defence Metallurgical Research Laboratory; DRDO; Hyderabad 500 058 India
| | - Subrahmanyam Ch.
- Department of Chemistry; Indian Institute of Technology (IIT); Hyderabad 502205 India
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26
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Conducting semi-interpenetrating polymeric composites via the preparation of poly(aniline), poly(thiophene), and poly(pyrrole) polymers within superporous poly(acrylic acid) cryogels. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2016.05.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Li L, Chakrabarty S, Jiang J, Zhang B, Ober C, Giannelis EP. Solubility studies of inorganic-organic hybrid nanoparticle photoresists with different surface functional groups. NANOSCALE 2016; 8:1338-1343. [PMID: 26695121 DOI: 10.1039/c5nr07334k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The solubility behavior of Hf and Zr based hybrid nanoparticles with different surface ligands in different concentrations of photoacid generator as potential EUV photoresists was investigated in detail. The nanoparticles regardless of core or ligand chemistry have a hydrodynamic diameter of 2-3 nm and a very narrow size distribution in organic solvents. The Hansen solubility parameters for nanoparticles functionalized with IBA and 2MBA have the highest contribution from the dispersion interaction than those with tDMA and MAA, which show more polar character. The nanoparticles functionalized with unsaturated surface ligands showed more apparent solubility changes after exposure to DUV than those with saturated ones. The solubility differences after exposure are more pronounced for films containing a higher amount of photoacid generator. The work reported here provides material selection criteria and processing strategies for the design of high performance EUV photoresists.
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Affiliation(s)
- Li Li
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA.
| | - Souvik Chakrabarty
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA.
| | - Jing Jiang
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA.
| | - Ben Zhang
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA.
| | - Christopher Ober
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA.
| | - Emmanuel P Giannelis
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA.
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28
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Lee D, Kaushik M, Coustel R, Chenavier Y, Chanal M, Bardet M, Dubois L, Okuno H, Rochat N, Duclairoir F, Mouesca J, De Paëpe G. Solid‐State NMR and DFT Combined for the Surface Study of Functionalized Silicon Nanoparticles. Chemistry 2015; 21:16047-58. [DOI: 10.1002/chem.201502687] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Daniel Lee
- Univsité Grenoble Alpes, 38000 Grenoble (France)
- CEA, INAC, SCIB, 38000 Grenoble (France)
| | - Monu Kaushik
- Univsité Grenoble Alpes, 38000 Grenoble (France)
- CEA, INAC, SCIB, 38000 Grenoble (France)
- Present address: Institutes of Biophysical Chemistry, Physical and Theoretical Chemistry and Center for Biomolecular Magnetic Resonance BMRZ, Goethe University Frankfurt, 60438 Frankfurt/M. (Germany)
| | - Romain Coustel
- Univsité Grenoble Alpes, 38000 Grenoble (France)
- CEA, INAC, SCIB, 38000 Grenoble (France)
- Present address: Université de Lorraine, LCPME, UMR 7564, Villers‐les‐Nancy 54600 (France)
| | - Yves Chenavier
- Univsité Grenoble Alpes, 38000 Grenoble (France)
- CEA, INAC, SCIB, 38000 Grenoble (France)
| | - Myriam Chanal
- Univsité Grenoble Alpes, 38000 Grenoble (France)
- CEA, INAC, SCIB, 38000 Grenoble (France)
| | - Michel Bardet
- Univsité Grenoble Alpes, 38000 Grenoble (France)
- CEA, INAC, SCIB, 38000 Grenoble (France)
| | - Lionel Dubois
- Univsité Grenoble Alpes, 38000 Grenoble (France)
- CEA, INAC, SCIB, 38000 Grenoble (France)
| | - Hanako Okuno
- Univsité Grenoble Alpes, 38000 Grenoble (France)
- CEA, INAC, SP2M, 38000 Grenoble (France)
| | - Névine Rochat
- Univsité Grenoble Alpes, 38000 Grenoble (France)
- CEA‐LETI, MINATEC Campus, 38054 Grenoble (France)
| | - Florence Duclairoir
- Univsité Grenoble Alpes, 38000 Grenoble (France)
- CEA, INAC, SCIB, 38000 Grenoble (France)
| | - Jean‐Marie Mouesca
- Univsité Grenoble Alpes, 38000 Grenoble (France)
- CEA, INAC, SCIB, 38000 Grenoble (France)
| | - Gaël De Paëpe
- Univsité Grenoble Alpes, 38000 Grenoble (France)
- CEA, INAC, SCIB, 38000 Grenoble (France)
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29
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Yan J, Zeng X, Ren T, van der Heide E. Exploring an alternative aqueous lubrication concept for biomedical applications: Hydration lubrication based on O/W emulsions combined with graphene oxide. BIOSURFACE AND BIOTRIBOLOGY 2015. [DOI: 10.1016/j.bsbt.2015.05.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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30
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Illés E, Szekeres M, Kupcsik E, Tóth IY, Farkas K, Jedlovszky-Hajdú A, Tombácz E. PEGylation of surfacted magnetite core–shell nanoparticles for biomedical application. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.01.043] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Microwave Plasma Synthesis of Materials—From Physics and Chemistry to Nanoparticles: A Materials Scientist’s Viewpoint. INORGANICS 2014. [DOI: 10.3390/inorganics2030468] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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32
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Atkins TM, Cassidy MC, Lee M, Ganguly S, Marcus CM, Kauzlarich SM. Synthesis of long T₁ silicon nanoparticles for hyperpolarized ²⁹Si magnetic resonance imaging. ACS NANO 2013; 7:1609-17. [PMID: 23350651 PMCID: PMC3612549 DOI: 10.1021/nn305462y] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We describe the synthesis, materials characterization, and dynamic nuclear polarization (DNP) of amorphous and crystalline silicon nanoparticles for use as hyperpolarized magnetic resonance imaging (MRI) agents. The particles were synthesized by means of a metathesis reaction between sodium silicide (Na₄Si₄) and silicon tetrachloride (SiCl₄) and were surface functionalized with a variety of passivating ligands. The synthesis scheme results in particles of diameter ∼10 nm with long size-adjusted ²⁹Si spin-lattice relaxation (T₁) times (>600 s), which are retained after hyperpolarization by low-temperature DNP.
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Affiliation(s)
- Tonya M. Atkins
- Department of Chemistry, University of California, Davis, CA 95616 USA
| | - Maja C. Cassidy
- School of Engineering and Applied Science, Harvard University, Cambridge, MA 02138 USA
| | - Menyoung Lee
- Department of Physics, Harvard University, Cambridge, MA 02138 USA
| | - Shreyashi Ganguly
- Department of Chemistry, University of California, Davis, CA 95616 USA
| | - Charles M. Marcus
- Department of Physics, Harvard University, Cambridge, MA 02138 USA
- Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen O, Denmark
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