251
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Li M, Zhu L, Liu X, Yu Y, Zhang H, Yu B, Zheng J, Zhang N, Yu C, Chen BH. Synthesis of Antimony Trioxide Crystals with Various Morphologies and Their UV-Vis-NIR Reflectance Performance. ChemistrySelect 2018. [DOI: 10.1002/slct.201800077] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Min Li
- School of Metallurgy and Chemical Engineering; Jiangxi University of Science and Technology; Ganzhou 341000 China
| | - Lihua Zhu
- School of Metallurgy and Chemical Engineering; Jiangxi University of Science and Technology; Ganzhou 341000 China
- Department of Chemical and Biochemical Engineering; National Engineering Laboratory for Green; Productions of Alcohols-Ethers-Esters; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Xiaohong Liu
- Library; Jiangxi University of Traditional Chinese Medicine; Nanchang 330004 China
| | - Youya Yu
- School of Metallurgy and Chemical Engineering; Jiangxi University of Science and Technology; Ganzhou 341000 China
| | - Huan Zhang
- School of Metallurgy and Chemical Engineering; Jiangxi University of Science and Technology; Ganzhou 341000 China
| | - Biqing Yu
- Department of Chemical and Biochemical Engineering; National Engineering Laboratory for Green; Productions of Alcohols-Ethers-Esters; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Jinbao Zheng
- Department of Chemical and Biochemical Engineering; National Engineering Laboratory for Green; Productions of Alcohols-Ethers-Esters; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Nuowei Zhang
- Department of Chemical and Biochemical Engineering; National Engineering Laboratory for Green; Productions of Alcohols-Ethers-Esters; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Changlin Yu
- School of Metallurgy and Chemical Engineering; Jiangxi University of Science and Technology; Ganzhou 341000 China
| | - Bing Hui Chen
- Department of Chemical and Biochemical Engineering; National Engineering Laboratory for Green; Productions of Alcohols-Ethers-Esters; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
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252
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Zhang J, Fang Q, Duan J, Xu H, Xu H, Xuan S. Magnetically Separable Nanocatalyst with the Fe 3O 4 Core and Polydopamine-Sandwiched Au Nanocrystal Shell. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:4298-4306. [PMID: 29546989 DOI: 10.1021/acs.langmuir.8b00302] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This work reports a novel Fe3O4@polydopamine/Au/polydopamine core/shell nanocomposite toward a magnetically separable nanocatalyst. Because the polydopamine (PDA) layer-sandwiched Au nanocrystals were prepared by a layer-by-layer method, the content of Au could be controlled by varying the Au shell number (such as burger-like Fe3O4@PDA/Au/PDA/Au/PDA). Fe3O4@PDA/Au/PDA exhibited excellent catalytic activity in reducing p-nitrophenol because the substrate could penetrate the PDA shell. Owing to the protection of the PDA shell, Fe3O4@PDA/Au/PDA presented higher cyclability than Fe3O4@PDA/Au. The activity of Fe3O4@PDA/Au/PDA maintained 95% after 7 cycles, while that of Fe3O4@PDA/Au was only 61%. The detailed cycling catalytic mechanism was investigated, and it was found that the catalytic rate of Fe3O4@PDA/Au/PDA/Au/PDA was faster than that of Fe3O4@PDA/Au/PDA because of the higher Au content. Interestingly, this method could be extended for other magnetic nanocomposites with two different kinds of noble metal nanocrystals integrated within one particle, such as Fe3O4@PDA/Au/PDA/Ag/PDA and Fe3O4@PDA/Au/PDA/Pd/PDA.
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Affiliation(s)
- Jianfeng Zhang
- School of Biological and Medical Engineering , Hefei University of Technology , Hefei 230009 , P. R. China
| | - Qunling Fang
- School of Biological and Medical Engineering , Hefei University of Technology , Hefei 230009 , P. R. China
| | - Jinyu Duan
- School of Biological and Medical Engineering , Hefei University of Technology , Hefei 230009 , P. R. China
| | - Hongmei Xu
- School of Biological and Medical Engineering , Hefei University of Technology , Hefei 230009 , P. R. China
| | - Huajian Xu
- School of Biological and Medical Engineering , Hefei University of Technology , Hefei 230009 , P. R. China
| | - Shouhu Xuan
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics , University of Science and Technology of China , Hefei 230027 , P. R. China
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253
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Mizrahi MD, Krylova G, Giovanetti LJ, Ramallo-López JM, Liu Y, Shevchenko EV, Requejo FG. Unexpected compositional and structural modification of CoPt 3 nanoparticles by extensive surface purification. NANOSCALE 2018; 10:6382-6392. [PMID: 29561055 DOI: 10.1039/c8nr00060c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We combined synchrotron small angle X-ray scattering, X-ray fluorescence and extended X-ray absorption fine structure spectroscopy to probe the structure of chemically synthesized CoPt3 nanoparticles (NPs) after ligand removal via the commonly accepted solvent/nonsolvent approach. We showed that the improved catalytic activity of extensively purified NPs could not be explained only in terms of a "cleaner" surface. We found that extensive surface purification results in the substantial leaching of the Co atoms from the chemically synthesized CoPt3 NPs transforming them into CoPt3/Pt core/shell structures with an unexpectedly thick (∼0.5 nm) Pt shell. We indicated that the improved catalytic activity of extensively purified NPs in octyne hydrogenation reaction can be explained by the formation of CoPt3/Pt core/shell structures. Also, we demonstrated that drastic compositional and structural transformation of water transferred CoPt3 NPs was rather a result of extensive removal of native ligands via a solvent/nonsolvent approach than leaching of cobalt atoms in aqueous media. We expect that these findings can be relevant to other transition metal based multicomponent NPs.
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Affiliation(s)
- Martín D Mizrahi
- INIFTA, CONICET and Dpto. Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, P.O. Box 16, Suc. 4, 1900 La Plata, Buenos Aires, Argentina.
| | - Galyna Krylova
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA.
| | - Lisandro J Giovanetti
- INIFTA, CONICET and Dpto. Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, P.O. Box 16, Suc. 4, 1900 La Plata, Buenos Aires, Argentina.
| | - José M Ramallo-López
- INIFTA, CONICET and Dpto. Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, P.O. Box 16, Suc. 4, 1900 La Plata, Buenos Aires, Argentina.
| | - Yuzi Liu
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA.
| | - Elena V Shevchenko
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA.
| | - Félix G Requejo
- INIFTA, CONICET and Dpto. Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, P.O. Box 16, Suc. 4, 1900 La Plata, Buenos Aires, Argentina.
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254
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Magnetic nanoparticles based cancer therapy: current status and applications. SCIENCE CHINA-LIFE SCIENCES 2018; 61:400-414. [DOI: 10.1007/s11427-017-9271-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Accepted: 01/15/2018] [Indexed: 12/11/2022]
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255
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Feng J, Chen D, Sediq AS, Romeijn S, Tichelaar FD, Jiskoot W, Yang J, Koper MTM. Cathodic Corrosion of a Bulk Wire to Nonaggregated Functional Nanocrystals and Nanoalloys. ACS APPLIED MATERIALS & INTERFACES 2018; 10:9532-9540. [PMID: 29446912 PMCID: PMC5865079 DOI: 10.1021/acsami.7b18105] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 02/15/2018] [Indexed: 06/08/2023]
Abstract
A key enabling step in leveraging the properties of nanoparticles (NPs) is to explore new, simple, controllable, and scalable nanotechnologies for their syntheses. Among "wet" methods, cathodic corrosion has been used to synthesize catalytic aggregates with some control over their size and preferential faceting. Here, we report on a modification of the cathodic corrosion method for producing a range of nonaggregated nanocrystals (Pt, Pd, Au, Ag, Cu, Rh, Ir, and Ni) and nanoalloys (Pt50Au50, Pd50Au50, and Ag xAu100- x) with potential for scaling up the production rate. The method employs poly(vinylpyrrolidone) (PVP) as a stabilizer in an electrolyte solution containing nonreducible cations (Na+, Ca2+), and cathodic corrosion of the corresponding wires takes place in the electrolyte under ultrasonication. The ultrasonication not only promotes particle-PVP interactions (enhancing NP dispersion and diluting locally high NP concentration) but also increases the production rate by a factor of ca. 5. Further increase in the production rate can be achieved through parallelization of electrodes to construct comb electrodes. With respect to applications, carbon-supported Pt NPs prepared by the new method exhibit catalytic activity and durability for methanol oxidation comparable or better than the commercial benchmark catalyst. A variety of Ag xAu100- x nanoalloys are characterized by ultraviolet-visible absorption spectroscopy and high-resolution transmission electron microscopy. The protocol for NP synthesis by cathodic corrosion should be a step toward its further use in academic research as well as in its practical upscaling.
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Affiliation(s)
- Jicheng Feng
- Catalysis
and Surface Chemistry, Leiden Institute of Chemistry and Division of BioTherapeutics,
Leiden Academic Center for Drug Research, Leiden University, 2300
RA Leiden, The Netherlands
| | - Dong Chen
- State
Key Laboratory of Multiphase Complex Systems, Institute of Process
Engineering, Chinese Academy of Sciences, 100190 Beijing, China
| | - Ahmad S. Sediq
- Catalysis
and Surface Chemistry, Leiden Institute of Chemistry and Division of BioTherapeutics,
Leiden Academic Center for Drug Research, Leiden University, 2300
RA Leiden, The Netherlands
| | - Stefan Romeijn
- Catalysis
and Surface Chemistry, Leiden Institute of Chemistry and Division of BioTherapeutics,
Leiden Academic Center for Drug Research, Leiden University, 2300
RA Leiden, The Netherlands
| | - Frans D. Tichelaar
- Kavli
Institute of NanoScience, Delft University
of Technology, Lorentzweg
1, 2628 CJ Delft, The Netherlands
| | - Wim Jiskoot
- Catalysis
and Surface Chemistry, Leiden Institute of Chemistry and Division of BioTherapeutics,
Leiden Academic Center for Drug Research, Leiden University, 2300
RA Leiden, The Netherlands
| | - Jun Yang
- State
Key Laboratory of Multiphase Complex Systems, Institute of Process
Engineering, Chinese Academy of Sciences, 100190 Beijing, China
| | - Marc T. M. Koper
- Catalysis
and Surface Chemistry, Leiden Institute of Chemistry and Division of BioTherapeutics,
Leiden Academic Center for Drug Research, Leiden University, 2300
RA Leiden, The Netherlands
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256
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Rodriguez-Padrón D, Puente-Santiago AR, Balu AM, Romero AA, Luque R. Solventless mechanochemical preparation of novel magnetic bioconjugates. Chem Commun (Camb) 2018. [PMID: 28642952 DOI: 10.1039/c7cc03975a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A solventless mechanochemical approach was employed to obtain a bioconjugate (BSA-DA-Fe2O3) based on bovine serum albumin (BSA) and dopamine (DA) coated iron oxide magnetic nanoparticles. UV-vis measurements of the obtained material showed a distinctive peak at 280 nm which, together with the presence of N on the surface of the nanomaterial (a band at 400 eV in the XPS spectrum) and zeta potential measurements, confirmed the successful immobilization of the protein. Additionally, the presence of two bands at 1652 and 1545 cm-1 in the FT-IR spectra of both BSA and BSA-DA-Fe2O3 and steady-state fluorescence analysis validated that the protein preserved its native-like structure after the mechanochemical milling process. Also the functionalized MNPs preserved their magnetic properties as have been demonstrated by their magnetic susceptibility value.
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Affiliation(s)
- Daily Rodriguez-Padrón
- Departamento de Química Orgánica, Grupo FQM-383, Universidad de Cordoba, Campus de Rabanales, Edificio Marie Curie (C-3), Ctra Nnal IV-A, Km 396, E14014, Cordoba, Spain.
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257
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Yun G, Pan S, Wang T, Guo J, Richardson JJ, Caruso F. Synthesis of Metal Nanoparticles in Metal-Phenolic Networks: Catalytic and Antimicrobial Applications of Coated Textiles. Adv Healthc Mater 2018; 7. [PMID: 29024556 DOI: 10.1002/adhm.201700934] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 09/11/2017] [Indexed: 12/16/2022]
Abstract
The synthesis of metal nanoparticle (NP)-coated textiles (nanotextiles) is achieved by a dipping process in water without toxic chemicals or complicated synthetic procedures. By taking advantage of the unique nature of tannic acid, metal-phenolic network-coated textiles serve as reducing and stabilizing sites for the generation of metal nanoparticles of controllable size. The textiles can be decorated with various metal nanoparticles, including palladium, silver, or gold, and exhibit properties derived from the presence of the metal nanoparticles, for example, catalytic activity in water (>96% over five cycles using palladium nanoparticles) and antibacterial activity against Gram-negative bacteria (inhibition of Escherichia coli using silver nanoparticles) that outperforms a commercial bandage. The reported strategy offers opportunities for the development of hybrid nanomaterials that may have application in fields outside of catalysis and antimicrobials, such as sensing and smart clothing.
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Affiliation(s)
- Gyeongwon Yun
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and the Department of Chemical Engineering The University of Melbourne Parkville Victoria 3010 Australia
| | - Shuaijun Pan
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and the Department of Chemical Engineering The University of Melbourne Parkville Victoria 3010 Australia
| | - Ting‐Yi Wang
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and the Department of Chemical Engineering The University of Melbourne Parkville Victoria 3010 Australia
| | - Junling Guo
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and the Department of Chemical Engineering The University of Melbourne Parkville Victoria 3010 Australia
| | - Joseph J. Richardson
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and the Department of Chemical Engineering The University of Melbourne Parkville Victoria 3010 Australia
| | - Frank Caruso
- ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and the Department of Chemical Engineering The University of Melbourne Parkville Victoria 3010 Australia
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258
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Alotaibi S, Samba J, Pokharel S, Lan Y, Uradu K, Afolabi A, Unlu I, Basnet G, Aslan K, Flanders BN, Lisfi A, Ozturk B. Individually grown cobalt nanowires as magnetic force microscopy probes. APPLIED PHYSICS LETTERS 2018; 112:092401. [PMID: 29531389 PMCID: PMC5826737 DOI: 10.1063/1.4997310] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 02/08/2018] [Indexed: 06/12/2023]
Abstract
AC electric fields were utilized in the growth of individual high-aspect ratio cobalt nanowires from simple salt solutions using the Directed Electrochemical Nanowire Assembly method. Nanowire diameters were tuned from the submicron scale to 40 nm by adjusting the AC voltage frequency and the growth solution concentration. The structural properties of the nanowires, including shape and crystallinity, were identified using electron microscopy. Hysteresis loops obtained along different directions of an individual nanowire using vibrating sample magnetometry showed that the magnetocrystalline anisotropy energy has the same order of magnitude as the shape anisotropy energy. Additionally, the saturation magnetization of an individual cobalt nanowire was estimated to be close to the bulk single crystal value. A small cobalt nanowire segment was grown from a conductive atomic force microscope cantilever tip that was utilized in magnetic force microscopy (MFM) imaging. The fabricated MFM tip provided moderate quality magnetic images of an iron-cobalt thin-film sample.
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Affiliation(s)
- Shuaa Alotaibi
- Department of Physics, Morgan State University, 1700 East Cold Spring Lane, Baltimore, Maryland 21215, USA
| | - Joshua Samba
- Department of Physics, Morgan State University, 1700 East Cold Spring Lane, Baltimore, Maryland 21215, USA
| | - Sabin Pokharel
- Department of Physics, Morgan State University, 1700 East Cold Spring Lane, Baltimore, Maryland 21215, USA
| | - Yucheng Lan
- Department of Physics, Morgan State University, 1700 East Cold Spring Lane, Baltimore, Maryland 21215, USA
| | - Kelechi Uradu
- Department of Physics, Morgan State University, 1700 East Cold Spring Lane, Baltimore, Maryland 21215, USA
| | - Ayodeji Afolabi
- Department of Physics, Morgan State University, 1700 East Cold Spring Lane, Baltimore, Maryland 21215, USA
| | - Ilyas Unlu
- Department of Chemistry, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, USA
| | - Gobind Basnet
- Department of Physics, Kansas State University, 1228 N. 17th St., Manhattan, Kansas 66506, USA
| | - Kadir Aslan
- Department of Chemistry, Morgan State University, 1700 East Cold Spring Lane, Baltimore, Maryland 2121, USA
| | - Bret N. Flanders
- Department of Physics, Kansas State University, 1228 N. 17th St., Manhattan, Kansas 66506, USA
| | - Abdellah Lisfi
- Department of Physics, Morgan State University, 1700 East Cold Spring Lane, Baltimore, Maryland 21215, USA
| | - Birol Ozturk
- Department of Physics, Morgan State University, 1700 East Cold Spring Lane, Baltimore, Maryland 21215, USA
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259
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Oberdick SD, Abdelgawad A, Moya C, Mesbahi-Vasey S, Kepaptsoglou D, Lazarov VK, Evans RFL, Meilak D, Skoropata E, van Lierop J, Hunt-Isaak I, Pan H, Ijiri Y, Krycka KL, Borchers JA, Majetich SA. Spin canting across core/shell Fe 3O 4/Mn xFe 3-xO 4 nanoparticles. Sci Rep 2018; 8:3425. [PMID: 29467424 PMCID: PMC5821856 DOI: 10.1038/s41598-018-21626-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 02/07/2018] [Indexed: 11/21/2022] Open
Abstract
Magnetic nanoparticles (MNPs) have become increasingly important in biomedical applications like magnetic imaging and hyperthermia based cancer treatment. Understanding their magnetic spin configurations is important for optimizing these applications. The measured magnetization of MNPs can be significantly lower than bulk counterparts, often due to canted spins. This has previously been presumed to be a surface effect, where reduced exchange allows spins closest to the nanoparticle surface to deviate locally from collinear structures. We demonstrate that intraparticle effects can induce spin canting throughout a MNP via the Dzyaloshinskii-Moriya interaction (DMI). We study ~7.4 nm diameter, core/shell Fe3O4/MnxFe3−xO4 MNPs with a 0.5 nm Mn-ferrite shell. Mössbauer spectroscopy, x-ray absorption spectroscopy and x-ray magnetic circular dichroism are used to determine chemical structure of core and shell. Polarized small angle neutron scattering shows parallel and perpendicular magnetic correlations, suggesting multiparticle coherent spin canting in an applied field. Atomistic simulations reveal the underlying mechanism of the observed spin canting. These show that strong DMI can lead to magnetic frustration within the shell and cause canting of the net particle moment. These results illuminate how core/shell nanoparticle systems can be engineered for spin canting across the whole of the particle, rather than solely at the surface.
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Affiliation(s)
- Samuel D Oberdick
- Physics Department, Carnegie Mellon University, Pittsburgh, PA, 15213, USA.,Applied Physics Division, Physical Measurement Laboratory, NIST, Boulder, CO, 80305, USA
| | - Ahmed Abdelgawad
- Physics Department, Carnegie Mellon University, Pittsburgh, PA, 15213, USA.,Materials Science and Engineering Department, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Carlos Moya
- Physics Department, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | | | - Demie Kepaptsoglou
- SuperSTEM, Sci-Tech Daresbury Campus, Daresbury, WA4 4AD, UK.,Department of Physics, University of York, Heslington, York, YO10 5DD, UK.,The York-JEOL Nanocentre, York Science Park, Heslington, York, YO10 5BR, UK
| | - Vlado K Lazarov
- Department of Physics, University of York, Heslington, York, YO10 5DD, UK
| | - Richard F L Evans
- Department of Physics, University of York, Heslington, York, YO10 5DD, UK
| | - Daniel Meilak
- Department of Physics, University of York, Heslington, York, YO10 5DD, UK
| | - Elizabeth Skoropata
- Physics and Astronomy Department, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Johan van Lierop
- Physics and Astronomy Department, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Ian Hunt-Isaak
- Physics and Astronomy Department, Oberlin College, Oberlin, OH, 44074, USA
| | - Hillary Pan
- Physics and Astronomy Department, Oberlin College, Oberlin, OH, 44074, USA
| | - Yumi Ijiri
- Physics and Astronomy Department, Oberlin College, Oberlin, OH, 44074, USA
| | - Kathryn L Krycka
- NIST Center for Neutron Research, NIST, Gaithersburg, Maryland, 20899, USA
| | - Julie A Borchers
- NIST Center for Neutron Research, NIST, Gaithersburg, Maryland, 20899, USA
| | - Sara A Majetich
- Physics Department, Carnegie Mellon University, Pittsburgh, PA, 15213, USA.
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260
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Zhu K, Ju Y, Xu J, Yang Z, Gao S, Hou Y. Magnetic Nanomaterials: Chemical Design, Synthesis, and Potential Applications. Acc Chem Res 2018; 51:404-413. [PMID: 29412634 DOI: 10.1021/acs.accounts.7b00407] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Magnetic nanomaterials (MNMs) have attracted significant interest in the past few decades because of their unique properties such as superparamagnetism, which results from the influence of thermal energy on a ferromagnetic nanoparticle. In the superparamagnetic size regime, the moments of nanoparticles fluctuate as a result of thermal energy. To understand the fundamental behavior of superparamagnetism and develop relevant potential applications, various preparation routes have been explored to produce MNMs with desired properties and structures. However, some challenges remain for the preparation of well-defined magnetic nanostructures, including exchange-coupled nanomagnets, which are considered as the next generation of advanced magnets. In such a case, effective synthetic methods are required to achieve control over the chemical composition, size, and structure of MNMs. For instance, liquid-phase chemical syntheses, a set of emerging approaches to prepare various magnetic nanostructures, facilitate precise control over the nucleation and specific growth processes of nanomaterials with diverse structures. Among them, the high-temperature organic-phase method is an indispensable one in which the microstructures and physical/chemical properties of MNMs can be tuned by controlling the reaction conditions such as precursor, surfactant, or solvent amounts, reaction temperature or time, reaction atmosphere, etc. In this Account, we present an overview of our progress on the chemical synthesis of various MNMs, including monocomponent nanostructures (e.g., metals, metal alloys, metal oxides/carbides) and multicomponent nanostructures (heterostructures and exchange-coupled nanomagnets). We emphasize the high-temperature organic-phase synthetic method, on which we have been focused over the past decade. Notably, multicomponent nanostructures, obtained by growing or incorporating different functional components together, not only retain the functionalities of each single component but also possess synergic properties that emerge from interfacial coupling, with improved magnetic, optical, or catalytic features. Herein, potential applications of MNMs are covered in three representative areas: biomedicine, catalysis, and environmental purification. Regarding biomedicine, MNMs can detect or target biological entities after being modified with specific biomolecules, and they can be applied to magnetic resonance imaging, imaging-guided drug delivery, and photothermal therapy. Apart from their magnetic features, the catalytic performance of some MNMs resulting from their highly specific chemical components and surface structure will be briefly introduced, highlighting its impact in the methanol oxidation reaction, the oxygen reduction reaction, the oxygen and hydrogen evolution reactions, and the Fischer-Tropsch synthesis. Finally, environmental purification, primarily for water remediation, will be highlighted with two main aspects: the effective capture of bacteria and the removal of adverse ions in wastewater. We hope that this Account will clarify the progress on the controllable preparation of MNMs with specific compositions, sizes, and structures and generate broad interest in the realms of biomedicine and catalysis as well as in environmental issues and other potential applications.
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Affiliation(s)
- Kai Zhu
- Beijing
Key Laboratory for Magnetoelectric Materials and Devices (BKLMMD),
BIC-EAST, Department of Materials Science and Engineering, College
of Engineering, Peking University, Beijing 100871, China
- Academy
for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Yanmin Ju
- Beijing
Key Laboratory for Magnetoelectric Materials and Devices (BKLMMD),
BIC-EAST, Department of Materials Science and Engineering, College
of Engineering, Peking University, Beijing 100871, China
- College
of Life Science, Peking University, Beijing 100871, China
| | - Junjie Xu
- Beijing
Key Laboratory for Magnetoelectric Materials and Devices (BKLMMD),
BIC-EAST, Department of Materials Science and Engineering, College
of Engineering, Peking University, Beijing 100871, China
| | - Ziyu Yang
- Beijing
Key Laboratory for Magnetoelectric Materials and Devices (BKLMMD),
BIC-EAST, Department of Materials Science and Engineering, College
of Engineering, Peking University, Beijing 100871, China
| | - Song Gao
- College
of Chemical and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yanglong Hou
- Beijing
Key Laboratory for Magnetoelectric Materials and Devices (BKLMMD),
BIC-EAST, Department of Materials Science and Engineering, College
of Engineering, Peking University, Beijing 100871, China
- Academy
for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
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261
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Hu Y, Hu H, Yan J, Zhang C, Li Y, Wang M, Tan W, Liu J, Pan Y. Multifunctional Porous Iron Oxide Nanoagents for MRI and Photothermal/Chemo Synergistic Therapy. Bioconjug Chem 2018; 29:1283-1290. [PMID: 29402074 DOI: 10.1021/acs.bioconjchem.8b00052] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Nanoagents of integrating multiple imaging and therapeutic modalities have attracted tremendous attention for biomedical applications. Herein, we synthesize porous hollow Fe3O4 as a theranostic agent for MRI and combined photothermal/chemo cancer therapy. The as-prepared porous iron oxide nanoagents allow for T2-weighted MR imaging. Interestingly, we demonstrate that the porous structure endows the nanoagents an outstanding photothermal property for cancer cell killing, in comparison with other types of iron oxide nanomaterials. Under the exposure of an NIR laser, the heat produced by porous Fe3O4 can accelerate the release of the loaded drug (e.g., DOX) to enhance chemotherapeutic efficacy, promoting the ablation of cancer cells with synergistic photothermal/chemotherapy.
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Affiliation(s)
- Yayun Hu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu Province 215123 , China
| | - Hai Hu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Oncology , Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University , Guangzhou , 510120 , China
| | - Jun Yan
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu Province 215123 , China
| | - Chao Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu Province 215123 , China
| | - Yonggang Li
- Department of Radiology, The First Affiliated Hospital of Soochow University , Soochow University , Suzhou , Jiangsu Province 215006 , China
| | - Mengyun Wang
- Department of Radiology, The First Affiliated Hospital of Soochow University , Soochow University , Suzhou , Jiangsu Province 215006 , China
| | - Weiyi Tan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu Province 215123 , China
| | - Jian Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu Province 215123 , China
| | - Yue Pan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu Province 215123 , China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Oncology , Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University , Guangzhou , 510120 , China
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262
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Chen GJ, Li XB, Zhao CC, Ma HC, Kan JL, Xin YB, Chen CX, Dong YB. Ru Nanoparticles-Loaded Covalent Organic Framework for Solvent-Free One-Pot Tandem Reactions in Air. Inorg Chem 2018; 57:2678-2685. [DOI: 10.1021/acs.inorgchem.7b03077] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gong-Jun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China
| | - Xiao-Bo Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China
| | - Chen-Chen Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China
| | - Hui-Chao Ma
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China
| | - Jing-Lan Kan
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China
| | - Yu-Bin Xin
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China
| | - Cheng-Xia Chen
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Yu-Bin Dong
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China
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263
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Hartmann MJ, Millstone JE, Häkkinen H. Ligand mediated evolution of size dependent magnetism in cobalt nanoclusters. Phys Chem Chem Phys 2018; 20:4563-4570. [PMID: 29376525 DOI: 10.1039/c7cp06831j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We use density functional theory to model the impact of a ligand shell on the magnetic properties of CoN (15 ≤ N ≤ 55) nanoclusters. We study three different ligand shells on each nanocluster core size, each known to have different electronic interactions with the surface: pure Cl ligand shells (X-type), pure PH3 ligand shells (L-type), and two component ligand shells with mixtures of Cl and PH3 ligands. The simulations show that the identity, arrangement, and total coverage of the ligand shell controls the distribution of local magnetic moments across the CoN core. On the surface of an unpassivated CoN nanocluster, the Co-Co coordination number (CN) is known to determine the local magnetic moments. Upon the introduction of a ligand, the Co-Co CN remains important, however the nature of the metal-ligand bond changes the extent to which increasing Co-Co CN quenches magnetism. Further, we identify an additional and significant long-range impact on local magnetic moments (LMM) from the PH3 ligand shells. Thus, we establish important design principles of magnetic nanoclusters, where ligand shell chemistry mediates the distribution of LMMs across a CoNLM nanocluster, allowing a route to rational design of specific magnetic properties.
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Affiliation(s)
- Michael J Hartmann
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
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264
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Vamvakidis K, Mourdikoudis S, Makridis A, Paulidou E, Angelakeris M, Dendrinou-Samara C. Magnetic hyperthermia efficiency and MRI contrast sensitivity of colloidal soft/hard ferrite nanoclusters. J Colloid Interface Sci 2018; 511:101-109. [DOI: 10.1016/j.jcis.2017.10.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 09/27/2017] [Accepted: 10/01/2017] [Indexed: 11/15/2022]
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265
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Verma S, Baig RBN, Nadagouda MN, Varma RS. Oxidative C-H activation of amines using protuberant lychee-like goethite. Sci Rep 2018; 8:2024. [PMID: 29386553 PMCID: PMC5792549 DOI: 10.1038/s41598-018-20246-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 01/15/2018] [Indexed: 01/02/2023] Open
Abstract
Goethite with protuberant lychee morphology has been synthesized that accomplishes C-H activation of N-methylanilines to generate α-aminonitriles; the catalyst takes oxygen from air and uses it as a co-oxidant in the process.
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Affiliation(s)
- Sanny Verma
- Oak Ridge Institute for Science and Education, P. O. Box 117, Oak Ridge, TN, 37831, USA
| | - R B Nasir Baig
- Oak Ridge Institute for Science and Education, P. O. Box 117, Oak Ridge, TN, 37831, USA
| | - Mallikarjuna N Nadagouda
- Water Systems Division, Water Resources Recovery Branch, National Risk Management Research Laboratory, U. S. Environmental Protection Agency, 26 West Martin Luther King Drive, MS 443, Cincinnati, Ohio, 45268, USA
| | - Rajender S Varma
- Water Systems Division, Water Resources Recovery Branch, National Risk Management Research Laboratory, U. S. Environmental Protection Agency, 26 West Martin Luther King Drive, MS 443, Cincinnati, Ohio, 45268, USA.
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266
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Sokolov SV, Eloul S, Kätelhön E, Batchelor-McAuley C, Compton RG. Electrode-particle impacts: a users guide. Phys Chem Chem Phys 2018; 19:28-43. [PMID: 27918031 DOI: 10.1039/c6cp07788a] [Citation(s) in RCA: 169] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We present a comprehensive guide to nano-impact experiments, in which we introduce newcomers to this rapidly-developing field of research. Central questions are answered regarding required experimental set-ups, categories of materials that can be detected, and the theoretical frameworks enabling the analysis of experimental data. Commonly-encountered issues are considered and presented alongside methods for their solutions.
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Affiliation(s)
- Stanislav V Sokolov
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, UK.
| | - Shaltiel Eloul
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, UK.
| | - Enno Kätelhön
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, UK.
| | - Christopher Batchelor-McAuley
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, UK.
| | - Richard G Compton
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, UK.
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267
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Song G, Chen M, Zhang Y, Cui L, Qu H, Zheng X, Wintermark M, Liu Z, Rao J. Janus Iron Oxides @ Semiconducting Polymer Nanoparticle Tracer for Cell Tracking by Magnetic Particle Imaging. NANO LETTERS 2018; 18:182-189. [PMID: 29232142 PMCID: PMC5995329 DOI: 10.1021/acs.nanolett.7b03829] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Iron oxides nanoparticles tailored for magnetic particle imaging (MPI) have been synthesized, and their MPI signal intensity is three-times that of commercial MPI contrast (Ferucarbotran, also called Vivotrax) and seven-times that of MRI contrast (Feraheme) at the same Fe concentration. MPI tailored iron oxide nanoparticles were encapsulated with semiconducting polymers to produce Janus nanoparticles that possessed optical and magnetic properties for MPI and fluorescence imaging. Janus particles were applied to cancer cell labeling and in vivo tracking, and as few as 250 cells were imaged by MPI after implantation, corresponding to an amount of 7.8 ng of Fe. Comparison with MRI and fluorescence imaging further demonstrated the advantages of our Janus particles for MPI-super sensitivity, unlimited tissue penetration, and linear quantitativity.
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Affiliation(s)
- Guosheng Song
- Molecular Imaging Program at Stanford, Department of Radiology, Stanford University School of Medicine, 1201 Welch Road, Stanford, California, 94305-5484, USA
| | - Min Chen
- Molecular Imaging Program at Stanford, Department of Radiology, Stanford University School of Medicine, 1201 Welch Road, Stanford, California, 94305-5484, USA
| | - Yanrong Zhang
- Department of Radiology, Neuroimaging and Neurointervention Division Stanford University Hospital 300 Pasteur Drive, Stanford, CA 94305, USA
| | - Liyang Cui
- Molecular Imaging Program at Stanford, Department of Radiology, Stanford University School of Medicine, 1201 Welch Road, Stanford, California, 94305-5484, USA
| | - Haibo Qu
- Department of Radiology, Neuroimaging and Neurointervention Division Stanford University Hospital 300 Pasteur Drive, Stanford, CA 94305, USA
| | - Xianchuang Zheng
- Molecular Imaging Program at Stanford, Department of Radiology, Stanford University School of Medicine, 1201 Welch Road, Stanford, California, 94305-5484, USA
| | - Max Wintermark
- Department of Radiology, Neuroimaging and Neurointervention Division Stanford University Hospital 300 Pasteur Drive, Stanford, CA 94305, USA
| | - Zhuang Liu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu 215123, China
| | - Jianghong Rao
- Molecular Imaging Program at Stanford, Department of Radiology, Stanford University School of Medicine, 1201 Welch Road, Stanford, California, 94305-5484, USA
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268
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Fu L, Zeng X, Huang C, Cai P, Cheng G, Luo W. Ultrasmall Ir nanoparticles for efficient acidic electrochemical water splitting. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00082d] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1.8 nm monodisperse Ir nanoparticles have been prepared through a colloidal synthetic method, and further used as electrocatalysts for superior activity and long-term stability toward overall water splitting in acidic media.
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Affiliation(s)
- Luhong Fu
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Xiang Zeng
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Chaozhang Huang
- Technical Center of Fujian Tobacco Industrial Co
- Ltd
- Xiamen 361022
- P. R. China
| | - Ping Cai
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Gongzhen Cheng
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Wei Luo
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
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269
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Zhu L, Zheng T, Zheng J, Yu C, Zhang N, Zhou Q, Zhang W, Chen BH. Shape control of nickel crystals and catalytic hydrogenation performance of ruthenium-on-Ni crystals. CrystEngComm 2018. [DOI: 10.1039/c7ce01847a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Nickel crystals with various shapes were obtained via hydrothermal synthesis. The effect of temperature and surfactant on nickel morphology was studied.
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Affiliation(s)
- Lihua Zhu
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- China
- Department of Chemical and Biochemical Engineering
| | - Tuo Zheng
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Jinbao Zheng
- Department of Chemical and Biochemical Engineering
- National Engineering Laboratory for Green Productions of Alcohols-Ethers-Esters
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
| | - Changlin Yu
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Nuowei Zhang
- Department of Chemical and Biochemical Engineering
- National Engineering Laboratory for Green Productions of Alcohols-Ethers-Esters
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
| | - Qiongyu Zhou
- School of Material Science and Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Wen Zhang
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Bing Hui Chen
- Department of Chemical and Biochemical Engineering
- National Engineering Laboratory for Green Productions of Alcohols-Ethers-Esters
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
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270
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Najafishirtari S, Lak A, Guglieri C, Marras S, Brescia R, Fiorito S, Sadrollahi E, Litterst FJ, Pellegrino T, Manna L, Colombo M. Manipulating the morphology of the nano oxide domain in AuCu–iron oxide dumbbell-like nanocomposites as a tool to modify magnetic properties. RSC Adv 2018; 8:22411-22421. [PMID: 35539741 PMCID: PMC9081108 DOI: 10.1039/c8ra03399d] [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: 04/20/2018] [Accepted: 06/06/2018] [Indexed: 12/17/2022] Open
Abstract
We highlighted the effects of oleic acid on the structural and magnetic properties of colloidal nanodumbbells.
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Affiliation(s)
| | - Aidin Lak
- Nanomaterials for Biomedical Applications
- Istituto Italiano di Tecnologia
- 16163 Genoa
- Italy
| | | | - Sergio Marras
- Materials Characterization Facility
- Istituto Italiano di Tecnologia
- 16163 Genoa
- Italy
| | - Rosaria Brescia
- Electron Microscopy Facility
- Istituto Italiano di Tecnologia
- 16163 Genoa
- Italy
| | - Sergio Fiorito
- Nanomaterials for Biomedical Applications
- Istituto Italiano di Tecnologia
- 16163 Genoa
- Italy
- Università degli Studi di Genova
| | - Elaheh Sadrollahi
- Institut für Physik der Kondensierten Materie
- Technische Universität Braunschweig
- 38106 Braunschweig
- Germany
| | - Fred Jochen Litterst
- Institut für Physik der Kondensierten Materie
- Technische Universität Braunschweig
- 38106 Braunschweig
- Germany
| | - Teresa Pellegrino
- Nanomaterials for Biomedical Applications
- Istituto Italiano di Tecnologia
- 16163 Genoa
- Italy
| | - Liberato Manna
- Nanochemistry Department
- Istituto Italiano di Tecnologia
- 16163 Genoa
- Italy
| | - Massimo Colombo
- Nanochemistry Department
- Istituto Italiano di Tecnologia
- 16163 Genoa
- Italy
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271
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Wang T, Luan ZZ, Ge JY, Liu L, Wu D, Lv ZP, Zuo JL, Sun S. Enhancing low-field magnetoresistance in magnetite nanoparticles via zinc substitution. Phys Chem Chem Phys 2018; 20:17245-17252. [DOI: 10.1039/c8cp00843d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Zn-doping facilitates the alignment of magnetization direction of sub-10 nm Fe3O4 nanoparticles and enhances room temperature low-field magnetoresistance (LFMR).
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Affiliation(s)
- Tao Wang
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210093
| | - Zhong-Zhi Luan
- National Laboratory of Solid State Microstructures, Department of Physics
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Jing-Yuan Ge
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210093
| | - Ling Liu
- Institute of Theoretical and Computational Chemistry
- Key Laboratory of Mesoscopic Chemistry of the Ministry of Education (MOE)
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, 210023
| | - Di Wu
- National Laboratory of Solid State Microstructures, Department of Physics
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Zhong-Peng Lv
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210093
| | - Jing-Lin Zuo
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210093
| | - Shouheng Sun
- Department of Chemistry
- Brown University
- Providence
- USA
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272
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Deng X, Li W, Ding G, Chen X. Enantioselective separation of RS-mandelic acid using β-cyclodextrin modified Fe3O4@SiO2/Au microspheres. Analyst 2018; 143:2665-2673. [DOI: 10.1039/c8an00427g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
β-Cyclodextrin functionalized magnetic microspheres were prepared via a self-assembly method and applied for the enantioselective absorption of enantiomers.
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Affiliation(s)
- Xiaojuan Deng
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- China
- Analysis Center
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273
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Li H, Wang Y, Chen X, Liu S, Zhou Y, Zhu Q, Chen Y, Lu H. Preparation of metallic monolithic Pt/FeCrAl fiber catalyst by suspension spraying for VOCs combustion. RSC Adv 2018; 8:14806-14811. [PMID: 35541327 PMCID: PMC9079943 DOI: 10.1039/c8ra01720d] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 04/05/2018] [Indexed: 12/03/2022] Open
Abstract
We report a facile and general strategy for the preparation of metallic monolithic catalysts. Our strategy involved subjecting the surfaces of FeCrAl fibers to thermal treatment and the spraying of Pt nanoparticles suspension liquid. The catalyst exhibited high catalytic activity and good stability in the combustion of volatile organic compounds to CO2 and H2O at mild temperature. The exceptional activity of the catalyst can be attributed to the well-adhered alumina coating that formed on the surfaces of the FeCrAl fibers after thermal treatment and the highly dispersed Pt nanoparticles on the surface of the alumina coating. The catalyst was prepared by surface thermal treatment and spraying, and exhibited activity for the combustion of VOCs to CO2 and H2O.![]()
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Affiliation(s)
- Hao Li
- Innovation Team of Air Pollution Control
- Institute of Catalytic Reaction Engineering
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
| | - Yue Wang
- Innovation Team of Air Pollution Control
- Institute of Catalytic Reaction Engineering
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
| | - Xiao Chen
- College of Environment
- Zhejiang University of Technology
- China
| | - Shuo Liu
- Innovation Team of Air Pollution Control
- Institute of Catalytic Reaction Engineering
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
| | - Ying Zhou
- Innovation Team of Air Pollution Control
- Institute of Catalytic Reaction Engineering
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
| | - Qiulian Zhu
- Innovation Team of Air Pollution Control
- Institute of Catalytic Reaction Engineering
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
| | - Yinfei Chen
- Innovation Team of Air Pollution Control
- Institute of Catalytic Reaction Engineering
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
| | - Hanfeng Lu
- Innovation Team of Air Pollution Control
- Institute of Catalytic Reaction Engineering
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
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274
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M. da Silva KI, Bernardi F, Abarca G, Baptista DL, Leite Santos MJ, Fernández Barquín L, Dupont J, de Pedro I. Tuning the structure and magnetic behavior of Ni–Ir-based nanoparticles in ionic liquids. Phys Chem Chem Phys 2018; 20:10247-10257. [DOI: 10.1039/c8cp00164b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on a simple preparation of extremely small diameter (ca. 2 nm) Ni–Ir-based NPs with either core–shell like or alloy-like microstructures.
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Affiliation(s)
| | | | - Gabriel Abarca
- Centro de Nanotecnología Aplicada
- Facultad de Ciencias
- Universidad Mayor
- Chile
| | | | | | | | - Jairton Dupont
- Instituto de Química
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | - Imanol de Pedro
- CITIMAC
- Facultad de Ciencias
- Universidad de Cantabria
- 39005 Santander
- Spain
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275
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Wen CY, Bi JH, Wu LL, Zeng JB. Aptamer-functionalized magnetic and fluorescent nanospheres for one-step sensitive detection of thrombin. Mikrochim Acta 2017; 185:77. [PMID: 29594414 DOI: 10.1007/s00604-017-2621-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 12/15/2017] [Indexed: 01/09/2023]
Abstract
A one-step sandwich method is described for detecting proteins with magnetic nanospheres (MNs) and fluorescent nanospheres (FNs). Thrombin is selected as a model analyte to validate the method. Two DNA aptamers (Apt 29 and Apt 15 targeting two different exosites of thrombin) are chosen as recognition elements to modify MNs and FNs. The superparamagnetic MN-Apt 29 conjugate is used to separate and concentrate thrombin. The FN-Apt 15 conjugate encapsulates hundreds of fluorescent quantum dots and is used as reporter to provide a stable signal. Magnetic capture and fluorescence identification are performed simultaneously to form a sandwich complex (MN-Apt 29-thrombin-FN-Apt 15) for fluorescence determination (at excitation/emission wavelengths of 380/622 nm). The method is convenient, time saving, and gives a strong signal (compared to the two-step method where capture and identification are performed in two steps). The one-step method presented here is completed within 30 min and has a 3.5 ng·mL-1 (97 pM) detection limit. The method is reproducible, has an intra-assay variability of 1.5%, and an inter-assay variability of 4.9%. Other serum proteins (HSA, CEA, PSA, and AFP) do not interfere. The method was also applied to analyze serum samples. Almost the same fluorescence intensity was measured when analyzing 1% serum samples (compared to buffer samples). Graphical abstract Magnetic nanospheres with excellent superparamagnetic property and fluorescent QD-based nanospheres were prepared and used in a one-step sensitive method for detecting thrombin. The method exhibits good reproducibility, high specificity, and good selectivity.
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Affiliation(s)
- Cong-Ying Wen
- College of Science, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China. .,Hubei Key Laboratory of Medical Information Analysis & Tumor Diagnosis and Treatment, South-Central Minzu University, Wuhan, 430074, People's Republic of China.
| | - Jia-Hui Bi
- College of Science, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China
| | - Ling-Ling Wu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People's Republic of China
| | - Jing-Bin Zeng
- College of Science, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China.
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276
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Tao Y, Gu X, Li W, Cai B. Fabrication and evaluation of magnetic phosphodiesterase-5 linked nanoparticles as adsorbent for magnetic dispersive solid-phase extraction of inhibitors from Chinese herbal medicine prior to ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry analysis. J Chromatogr A 2017; 1532:58-67. [PMID: 29198447 DOI: 10.1016/j.chroma.2017.11.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 11/09/2017] [Accepted: 11/26/2017] [Indexed: 12/27/2022]
Abstract
In the present study, the preparation of the magnetic phosphodiesterase-5 linked Fe3O4@ SiO2 nanoparticles was successfully achieved by amide reaction and the magnetic phosphodiesterase-5 linked Fe3O4@SiO2 nanoparticles were evaluated as a new adsorbent for magnetic dispersive solid-phase extraction of ligands from medicinal plant samples before the analysis by UHPLC-Q-TOF/MS. The prepared phosphodiesterase-5 linked Fe3O4@SiO2 nanoparticles were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, vibration sample magnetometer and potential laser particle size analyzer. The effects of EDC concentration, incubation time and bead-protein ratio on the amount of immobilized protein were studied. The main experimental parameters affect extraction efficiency of ligands, such as wash times, wash solvents, incubation pH, ion strength and incubation temperature, were investigated and optimized by using echinacoside as a model compound. The absolute recovery of echinacoside was ranged from 98.36%-102.16% in Cistanche tubulosa sample under the optimal extraction conditions. Good linearity was observed in the investigated concentration range of 0.006 mgmL-1-0.97 mgmL-1(R2 = 0.9999). The limit of detection was 0.002 mgmL-1. The RSDs of within-day and between-day precision were less than 2.3%. Due to the excellent magnetic behavior of Fe3O4@SiO2 nanoparticles, the proposed method was shown to be simple and rapid. Remarkably, the magnetic phosphodiesterase-5 linked Fe3O4@SiO2 nanoparticles could be recycled for ten times with loss of 10% activity.
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Affiliation(s)
- Yi Tao
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; Jiangsu Key Laboratory of Chinese Medicine Processing, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China.
| | - Xianghui Gu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; Jiangsu Key Laboratory of Chinese Medicine Processing, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Weidong Li
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; Jiangsu Key Laboratory of Chinese Medicine Processing, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Baochang Cai
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; Jiangsu Key Laboratory of Chinese Medicine Processing, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
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277
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Raju Y, Krishnamurthi P, Paulose PL, Manoharan PT. Substrate-free copper nanoclusters exhibit super diamagnetism and surface based soft ferromagnetism. NANOSCALE 2017; 9:17963-17974. [PMID: 29125169 DOI: 10.1039/c7nr07136a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Pure metallic copper nanoparticles free of any substrate were synthesized by the thermo-chemical reduction of copper acetate using triethanolamine as a reducing-cum-protection agent. The structure and physical and magnetic properties of the Cu NPs were analysed physicochemically. Microscopic analysis reveals the formation of particles of size of 3-5 nm as seen by TEM but present as a large agglomeration as identified by SEM. A structure of Cu9 is predicted for the Cu NPs on the basis of investigations using XPS, MALDI, EPR, and magnetic measurements and supported by the prediction of DFT calculation from an earlier work. The most important findings come from magnetization studies which prove the existence of giant diamagnetism from the nanomer clusters of copper as well as the formation of two different ferromagnetic transitions at ∼40 K and ∼100 K, the latter two arising from the surface properties possibly due to thin films of CuO and/or the presence of TEOA giving rise to temperature dependent coercivity revealing them to be soft room temperature ferromagnets. The clusters of Cu NPs with the identified structure show temperature and field dependent giant diamagnetism which is about 29-39 times larger than the diamagnetism calculated from known and established atomic values. Though such enhanced diamagnetism has been predicted for noble metal clusters, experimental observation so far has been restricted to Au and Pt and this is probably the first report on substrate-free metallic copper clusters.
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Affiliation(s)
- Yuvaraja Raju
- Department of Chemistry, IIT Madras, Chennai - 600036, India.
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278
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Elsaidi SK, Sinnwell MA, Banerjee D, Devaraj A, Kukkadapu RK, Droubay TC, Nie Z, Kovarik L, Vijayakumar M, Manandhar S, Nandasiri M, McGrail BP, Thallapally PK. Reduced Magnetism in Core-Shell Magnetite@MOF Composites. NANO LETTERS 2017; 17:6968-6973. [PMID: 29048916 DOI: 10.1021/acs.nanolett.7b03451] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The magnetic susceptibility of synthesized magnetite (Fe3O4) microspheres was found to decline after the growth of a metal-organic framework (MOF) shell on the magnetite core. Detailed structural analysis of the core-shell particles using scanning electron microscopy, transmission electron microscopy, atom probe tomography, and57Fe-Mössbauer spectroscopy suggests that the distribution of MOF precursors inside the magnetic core resulted in the oxidation of the iron oxide core.
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Affiliation(s)
- Sameh K Elsaidi
- Chemistry Department, Faculty of Science, Alexandria University , P.O. Box 426, Ibrahimia, Alexandria 21321, Egypt
| | | | | | | | | | | | - Zimin Nie
- Energy and Environment Directorate, Pacific Northwest National Laboratory , Richland, Washington 99352, United States
| | | | | | - Sandeep Manandhar
- Department of Mechanical Engineering, University of Texas at El Paso , El Paso, Texas 79968, United States
| | | | - B Peter McGrail
- Energy and Environment Directorate, Pacific Northwest National Laboratory , Richland, Washington 99352, United States
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279
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Wu L, Zhong Q, Yang D, Chen M, Hu H, Pan Q, Liu H, Cao M, Xu Y, Sun B, Zhang Q. Improving the Stability and Size Tunability of Cesium Lead Halide Perovskite Nanocrystals Using Trioctylphosphine Oxide as the Capping Ligand. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12689-12696. [PMID: 29032682 DOI: 10.1021/acs.langmuir.7b02963] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Recently, all-inorganic cesium lead halide (CsPbX3, X = Cl, Br, and I) nanocrystals (NCs) have drawn wide attention because of their excellent optoelectronic properties and potential applications. However, one of the most significant challenges of such NCs is their low stability against protonic solvents. In this work, we demonstrate that by incorporating a highly branched capping ligand, trioctylphosphine oxide (TOPO), into the traditional oleic acid/oleylamine system, monodisperse CsPbX3 NCs with excellent optoelectronic properties can be achieved at elevated temperatures (up to 260 °C). The size of such NCs can be varied in a relatively wide range. The capping of TOPO on NCs has been verified through Fourier transform infrared spectroscopy measurement. More importantly, the presence of TOPO can dramatically improve the stability of CsPbX3 NCs against ethanol treatment. After ethanol treatment for 100 min, the emission intensity of the TOPO-capped sample dropped only 5%, whereas that of non-TOPO-capped NCs dropped up to 86%. This work may shed some light on the preparation and application of CsPbX3 NCs with higher stability.
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Affiliation(s)
- Linzhong Wu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Qixuan Zhong
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Di Yang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Min Chen
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Huicheng Hu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Qi Pan
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Haiyu Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Muhan Cao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Yong Xu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Baoquan Sun
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Qiao Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
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280
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Nguyen MT, Zhang H, Deng L, Tokunaga T, Yonezawa T. Au/Cu Bimetallic Nanoparticles via Double-Target Sputtering onto a Liquid Polymer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12389-12397. [PMID: 28972375 DOI: 10.1021/acs.langmuir.7b03194] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Alloy nanoparticles (NPs) of a bimetal system, Au/Cu, that form intermetallic compounds in a bulk state have been successfully produced using a double-target sputtering technique onto a low-cost and biocompatible liquid polymer (polyethylene glycol, PEG). The formation of an Au/Cu solid solution alloy in individual NPs was revealed by scanning transmission electron microscopy-energy-dispersive X-ray elemental mapping analysis. Altering the sputter currents for Au and Cu targets resulted in a tailored NP composition, but the particle sizes did not significantly vary. We found similar structures, sizes, and optical properties of Au/Cu NPs obtained by double-head sputtering on carbon-coated transmission electron microscopy grids or PEG and by Au/Cu alloy target sputtering. Random alloy formation occurred in matrix sputtering using double-target heads. This method is advantageous for manipulating the alloy composition through highly independent control of sputter parameters for each metal target.
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Affiliation(s)
- Mai Thanh Nguyen
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University , Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Hong Zhang
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University , Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Lianlian Deng
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University , Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Tomoharu Tokunaga
- Department of Quantum Engineering, Graduate School of Engineering, Nagoya University , Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Tetsu Yonezawa
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University , Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
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281
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Chen X, Xu Q, Zhou Y, Zhu Q, Huang H, Pan Z, Zhang P, Dai S, Lu H. Facile and Flexible Preparation of Highly Active CuCe Monolithic Catalysts for VOCs Combustion. ChemistrySelect 2017. [DOI: 10.1002/slct.201701850] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xiao Chen
- College of environment; Zhejiang University of Technology; Hangzhou 310014 China
| | - Qinqi Xu
- College of environment; Zhejiang University of Technology; Hangzhou 310014 China
| | - Ying Zhou
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310014 China
| | - Qiulian Zhu
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310014 China
| | - Haifeng Huang
- College of environment; Zhejiang University of Technology; Hangzhou 310014 China
| | - Zhiyan Pan
- College of environment; Zhejiang University of Technology; Hangzhou 310014 China
| | - Pengfei Zhang
- Chemical Sciences Division; Oak Ridge National Laboratory; Oak Ridge Tennessee 37831 USA
| | - Sheng Dai
- Chemical Sciences Division; Oak Ridge National Laboratory; Oak Ridge Tennessee 37831 USA
| | - Hanfeng Lu
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310014 China
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282
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Liang YJ, Fan F, Ma M, Sun J, Chen J, Zhang Y, Gu N. Size-dependent electromagnetic properties and the related simulations of Fe3O4 nanoparticles made by microwave-assisted thermal decomposition. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.06.059] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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283
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Zacharaki E, Beato P, Tiruvalam RR, Andersson KJ, Fjellvåg H, Sjåstad AO. From Colloidal Monodisperse Nickel Nanoparticles to Well-Defined Ni/Al 2O 3 Model Catalysts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:9836-9843. [PMID: 28832150 DOI: 10.1021/acs.langmuir.7b02197] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In the past few decades, advances in colloidal nanoparticle synthesis have created new possibilities for the preparation of supported model catalysts. However, effective removal of surfactants is a prerequisite to evaluate the catalytic properties of these catalysts in any reaction of interest. Here we report on the colloidal preparation of surfactant-free Ni/Al2O3 model catalysts. Monodisperse Ni nanoparticles (NPs) with mean particle size ranging from 4 to 9 nm were synthesized via thermal decomposition of a zerovalent precursor in the presence of oleic acid. Five weight percent Ni/Al2O3 catalysts were produced by direct deposition of the presynthesized NPs on an alumina support, followed by thermal activation (oxidation-reduction cycle) for complete surfactant removal and surface cleaning. Structural and morphological characteristics of the nanoscale catalysts are described in detail following the propagation of the bulk and surface Ni species at the different treatment stages. Powder X-ray diffraction, electron microscopy, and temperature-programmed reduction experiments as well as infrared spectroscopy of CO adsorption and magnetic measurements were conducted. The applied thermal treatments are proven to be fully adequate for complete surfactant removal while preserving the metal particle size and the size distribution at the level attained by the colloidal synthesis. Compared with standard impregnated Ni/Al2O3 catalysts, the current model materials display narrowed Ni particle size distributions and increased reducibility with a higher fraction of the metallic nickel atoms exposed at the catalyst surface.
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Affiliation(s)
- Eirini Zacharaki
- Department of Chemistry, Center for Materials Science and Nanotechnology, University of Oslo , P.O. Box 1033 Blindern, N-0315 Oslo, Norway
| | - Pablo Beato
- Haldor Topsoe A/S , Haldor Topsøes Allé 1, DK-2800 Kongens Lyngby, Denmark
| | | | - Klas J Andersson
- Haldor Topsoe A/S , Haldor Topsøes Allé 1, DK-2800 Kongens Lyngby, Denmark
| | - Helmer Fjellvåg
- Department of Chemistry, Center for Materials Science and Nanotechnology, University of Oslo , P.O. Box 1033 Blindern, N-0315 Oslo, Norway
| | - Anja O Sjåstad
- Department of Chemistry, Center for Materials Science and Nanotechnology, University of Oslo , P.O. Box 1033 Blindern, N-0315 Oslo, Norway
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284
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Shen B, Mendoza-Garcia A, Baker SE, McCall SK, Yu C, Wu L, Sun S. Stabilizing Fe Nanoparticles in the SmCo 5 Matrix. NANO LETTERS 2017; 17:5695-5698. [PMID: 28771363 DOI: 10.1021/acs.nanolett.7b02593] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report a new strategy for stabilizing Fe nanoparticles (NPs) in the preparation of SmCo5-Fe nanocomposites. We coat the presynthesized Fe NPs with SiO2 and assemble the Fe/SiO2 NPs with Sm-Co-OH to form a mixture. After reductive annealing at 850 °C in the presence of Ca, we obtain SmCo5-Fe/SiO2 composites. Following aqueous NaOH washing and compaction, we produced exchange-coupled SmCo5-Fe nanocomposites with Fe NPs controlled at 12 nm. Our work demonstrates a successful strategy of stabilizing high moment magnetic NPs in a hard magnetic matrix to produce a nanocomposite with tunable magnetic properties.
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Affiliation(s)
- Bo Shen
- Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States
| | - Adriana Mendoza-Garcia
- Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States
| | - Sarah E Baker
- Materials Science Division, Lawrence Livermore National Laboratory , Livermore, California 94550, United States
| | - Scott K McCall
- Materials Science Division, Lawrence Livermore National Laboratory , Livermore, California 94550, United States
| | - Chao Yu
- Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States
| | - Liheng Wu
- Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States
| | - Shouheng Sun
- Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States
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285
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Kim D, Choi JK, Kim SM, Hwang I, Koo J, Choi S, Cho SH, Kim K, Lee IS. Confined Nucleation and Growth of PdO Nanocrystals in a Seed-Free Solution inside Hollow Nanoreactor. ACS APPLIED MATERIALS & INTERFACES 2017; 9:29992-30001. [PMID: 28841005 DOI: 10.1021/acsami.7b08856] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This paper reports a novel and adaptable hollow nanoreactor system containing a solution of cucurbituril (CB) inside a silica nanoparticle (CB@h-SiO2) which enables the nucleation and formation of nanocrystals (NCs) to be confined at the seed-free interior solution inside the cavity. The above nanospace confinement strategy restricted the volume of medium available for NC formation to the solution inside the cavity to a few tens of nanometers in size and allowed homogeneous NC nucleation to be examined. Harboring of CB@h-SiO2 in a Pd2+ complex solution confined the nucleation and formation of PdO NCs to the well-isolated nanosized cavity protected by the silica nanoshell, allowing the convoluted formation of clustered PdO NCs to be thoroughly examined. The corresponding temporal investigation indicated that PdO NC clusters evolved via a distinct pathway combining dendritic growth on early nucleated seed NCs and attachment of small intermediate clusters. In addition, the explored strategy was used to fabricate a recyclable nanocatalyst system for selective catalytic oxidation of cinammyl alcohols, featuring a cavity-included Fe3O4/PdO nanocomposite.
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Affiliation(s)
- Daun Kim
- National Creative Research Initiative Center for Nanospace-Confined Chemical Reactions, Pohang University of Science and Technology (POSTECH) , Pohang, Gyeongbuk 37673, Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH) , Gyeongbuk 37673, Korea
| | - Jung Kyu Choi
- National Creative Research Initiative Center for Nanospace-Confined Chemical Reactions, Pohang University of Science and Technology (POSTECH) , Pohang, Gyeongbuk 37673, Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH) , Gyeongbuk 37673, Korea
| | - Soo Min Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH) , Gyeongbuk 37673, Korea
| | - Ilha Hwang
- Center for Self-Assembly and Complexity, Institute for Basic Science , Pohang 37673, Korea
| | - Jaehyoung Koo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH) , Gyeongbuk 37673, Korea
- Center for Self-Assembly and Complexity, Institute for Basic Science , Pohang 37673, Korea
| | - Seoyoung Choi
- Department of Chemistry, Pohang University of Science and Technology (POSTECH) , Gyeongbuk 37673, Korea
| | - Seung Hwan Cho
- Department of Chemistry, Pohang University of Science and Technology (POSTECH) , Gyeongbuk 37673, Korea
| | - Kimoon Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH) , Gyeongbuk 37673, Korea
- Center for Self-Assembly and Complexity, Institute for Basic Science , Pohang 37673, Korea
| | - In Su Lee
- National Creative Research Initiative Center for Nanospace-Confined Chemical Reactions, Pohang University of Science and Technology (POSTECH) , Pohang, Gyeongbuk 37673, Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH) , Gyeongbuk 37673, Korea
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286
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Wang F, Li M, Yu L, Sun F, Wang Z, Zhang L, Zeng H, Xu X. Corn-like, recoverable γ-Fe 2O 3@SiO 2@TiO 2 photocatalyst induced by magnetic dipole interactions. Sci Rep 2017; 7:6960. [PMID: 28761085 PMCID: PMC5537353 DOI: 10.1038/s41598-017-07417-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 06/22/2017] [Indexed: 02/04/2023] Open
Abstract
Corn-like, γ-Fe2O3@SiO2@TiO2 core/shell heterostructures were synthesized by a modified solvothermal reduction combined with a sol-gel method. SiO2 shells were first deposited on monodisperse Fe3O4 microspheres by a sol-gel method. Fe3O4@SiO2@TiO2 corn-like heterostructures were then obtained by sequential TiO2 coating, during which the magnetic dipolar interactions induced the anisotropic self-assembly process. After annealing at 350 °C, the crystalized TiO2 enhanced photocatalytic activity, while Fe3O4 was converted to γ-Fe2O3. The corn-like γ-Fe2O3@SiO2@TiO2 photocatalyst can be recycled and reused by magnet extraction. Despite the photocatalytic activity decreased with each cycle, it can be completely recovered by moderate heating at 200 °C.
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Affiliation(s)
- Fang Wang
- School of Chemistry and Materials Science of Shanxi Normal University & Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education, Linfen, 041004, China
- Research Institute of Materials Science of Shanxi Normal University & Collaborative Innovation Center for Shanxi Advanced Permanent Magnetic Materials and Technology, Linfen, 041004, China
| | - Manhong Li
- School of Chemistry and Materials Science of Shanxi Normal University & Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education, Linfen, 041004, China
- Research Institute of Materials Science of Shanxi Normal University & Collaborative Innovation Center for Shanxi Advanced Permanent Magnetic Materials and Technology, Linfen, 041004, China
| | - Lifang Yu
- School of Chemistry and Materials Science of Shanxi Normal University & Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education, Linfen, 041004, China
- Research Institute of Materials Science of Shanxi Normal University & Collaborative Innovation Center for Shanxi Advanced Permanent Magnetic Materials and Technology, Linfen, 041004, China
| | - Fan Sun
- Department of Physics, University at Buffalo, SUNY, Buffalo, NY, 14260, USA
| | - Zhuliang Wang
- School of Chemistry and Materials Science of Shanxi Normal University & Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education, Linfen, 041004, China
- Research Institute of Materials Science of Shanxi Normal University & Collaborative Innovation Center for Shanxi Advanced Permanent Magnetic Materials and Technology, Linfen, 041004, China
| | - Lifang Zhang
- School of Chemistry and Materials Science of Shanxi Normal University & Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education, Linfen, 041004, China
| | - Hao Zeng
- Department of Physics, University at Buffalo, SUNY, Buffalo, NY, 14260, USA.
| | - Xiaohong Xu
- School of Chemistry and Materials Science of Shanxi Normal University & Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education, Linfen, 041004, China.
- Research Institute of Materials Science of Shanxi Normal University & Collaborative Innovation Center for Shanxi Advanced Permanent Magnetic Materials and Technology, Linfen, 041004, China.
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287
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Reguera J, Jiménez de Aberasturi D, Henriksen-Lacey M, Langer J, Espinosa A, Szczupak B, Wilhelm C, Liz-Marzán LM. Janus plasmonic-magnetic gold-iron oxide nanoparticles as contrast agents for multimodal imaging. NANOSCALE 2017; 9:9467-9480. [PMID: 28660946 DOI: 10.1039/c7nr01406f] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The design of compact nanoprobes for multimodal bioimaging is a current challenge and may have a major impact on diagnostics and therapeutics. Multicomponent gold-iron oxide nanoparticles have shown high potential as contrast agents in numerous imaging techniques due to the complementary features of iron oxide and gold nanomaterials. In this paper we describe novel gold-iron oxide Janus magnetic-plasmonic nanoparticles as versatile nanoprobes for multimodal imaging. The nanoparticles are characterized as contrast agents for different imaging techniques, including X-ray computed tomography (CT), T2-weighted nuclear magnetic resonance imaging (MRI), photoacoustic imaging (PA), dark-field and bright-field optical microscopy, transmission electron microscopy (TEM), and surface enhanced Raman spectroscopy (SERS). We discuss the effect of particle size and morphology on their performance as contrast agents and show the advantage of a Janus configuration. Additionally, the uptake of nanoparticles by cells can be simultaneously visualized in dark- and bright-field optical microscopy, SERS mapping, and electron microscopy. These complementary techniques allow a complete view of cell uptake in an artifact-free manner, with multiplexing capabilities, and with extra information regarding the nanoparticles' fate inside the cells. Altogether, the results obtained with these non-invasive techniques show the high versatility of these nanoparticles, the advantages of a Janus configuration, and their high potential in multipurpose biomedical applications.
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Affiliation(s)
- Javier Reguera
- CIC biomaGUNE, Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain.
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288
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Tajfirooz F, Davoodnia A, Pordel M, Ebrahimi M, Khojastehnezhad A. Novel CuFe2
O4
@SiO2
-OP2
O5
H magnetic nanoparticles: Preparation, characterization and first catalytic application to the synthesis of 1,8-dioxo-octahydroxanthenes. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3930] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Farzaneh Tajfirooz
- Department of Chemistry, Mashhad Branch; Islamic Azad University; Mashhad Iran
| | | | - Mehdi Pordel
- Department of Chemistry, Mashhad Branch; Islamic Azad University; Mashhad Iran
| | - Mahmoud Ebrahimi
- Department of Chemistry, Mashhad Branch; Islamic Azad University; Mashhad Iran
| | - Amir Khojastehnezhad
- Young Researchers Club and Elites, Mashhad Branch; Islamic Azad University; Mashhad Iran
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289
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Fodjo EK, Gabriel KM, Serge BY, Li D, Kong C, Trokourey A. Selective synthesis of Fe 3O 4Au x Ag y nanomaterials and their potential applications in catalysis and nanomedicine. Chem Cent J 2017; 11:58. [PMID: 29086848 PMCID: PMC5482793 DOI: 10.1186/s13065-017-0288-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 06/17/2017] [Indexed: 12/13/2022] Open
Abstract
In these recent years, magnetite (Fe3O4) has witnessed a growing interest in the scientific community as a potential material in various fields of application namely in catalysis, biosensing, hyperthermia treatments, magnetic resonance imaging (MRI) contrast agents and drug delivery. Their unique properties such as metal-insulator phase transitions, superconductivity, low Curie temperature, and magnetoresistance make magnetite special and need further investigation. On the other hand, nanoparticles especially gold nanoparticles (Au NPs) exhibit striking features that are not observed in the bulk counterparts. For instance, the mentioned ferromagnetism in Au NPs coated with protective agents such as dodecane thiol, in addition to their aptitude to be used in near-infrared (NIR) light sensitivity and their high adsorptive ability in tumor cell, make them useful in nanomedicine application. Besides, silver nanoparticles (Ag NPs) are known as an antimicrobial agent. Put together, the [Formula: see text] nanocomposites with tunable size can therefore display important demanding properties for diverse applications. In this review, we try to examine the new trend of magnetite-based nanomaterial synthesis and their application in catalysis and nanomedicine.
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Affiliation(s)
- Essy Kouadio Fodjo
- Laboratory of Physical Chemistry, Université Felix Houphouet-Boigny, 22 BP 582, Abidjan 22, Côte d’Ivoire
| | - Koffi Mouroufié Gabriel
- Institut National Polytechnique Felix Houphouet-Boigny, BP 1093, Yamoussoukro, Côte d’Ivoire
| | - Brou Yapi Serge
- Laboratory of Physical Chemistry, Université Felix Houphouet-Boigny, 22 BP 582, Abidjan 22, Côte d’Ivoire
| | - Dan Li
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418 People’s Republic of China
| | - Cong Kong
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 300, Jungong Road, Yangpu, Shanghai, 200090 People’s Republic of China
| | - Albert Trokourey
- Laboratory of Physical Chemistry, Université Felix Houphouet-Boigny, 22 BP 582, Abidjan 22, Côte d’Ivoire
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290
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Du JS, Chen P, Meckes B, Xie Z, Zhu J, Liu Y, Dravid VP, Mirkin CA. The Structural Fate of Individual Multicomponent Metal‐Oxide Nanoparticles in Polymer Nanoreactors. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703296] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jingshan S. Du
- Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA
- International Institute for Nanotechnology Northwestern University Evanston IL 60208 USA
| | - Peng‐Cheng Chen
- Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA
- International Institute for Nanotechnology Northwestern University Evanston IL 60208 USA
| | - Brian Meckes
- Department of Chemistry Northwestern University Evanston IL 60208 USA
- International Institute for Nanotechnology Northwestern University Evanston IL 60208 USA
| | - Zhuang Xie
- Department of Chemistry Northwestern University Evanston IL 60208 USA
- International Institute for Nanotechnology Northwestern University Evanston IL 60208 USA
| | - Jinghan Zhu
- Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA
- International Institute for Nanotechnology Northwestern University Evanston IL 60208 USA
| | - Yuan Liu
- Department of Chemistry Northwestern University Evanston IL 60208 USA
- International Institute for Nanotechnology Northwestern University Evanston IL 60208 USA
| | - Vinayak P. Dravid
- Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA
- International Institute for Nanotechnology Northwestern University Evanston IL 60208 USA
| | - Chad A. Mirkin
- Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA
- Department of Chemistry Northwestern University Evanston IL 60208 USA
- International Institute for Nanotechnology Northwestern University Evanston IL 60208 USA
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291
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Affiliation(s)
- Lennart Brütsch
- Institut für Anorganische Chemie; Karlsruhe Institute of Technology (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - Claus Feldmann
- Institut für Anorganische Chemie; Karlsruhe Institute of Technology (KIT); Engesserstraße 15 76131 Karlsruhe Germany
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292
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Du JS, Chen PC, Meckes B, Xie Z, Zhu J, Liu Y, Dravid VP, Mirkin CA. The Structural Fate of Individual Multicomponent Metal-Oxide Nanoparticles in Polymer Nanoreactors. Angew Chem Int Ed Engl 2017; 56:7625-7629. [PMID: 28508525 DOI: 10.1002/anie.201703296] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Indexed: 11/11/2022]
Abstract
Multicomponent nanoparticles can be synthesized with either homogeneous or phase-segregated architectures depending on the synthesis conditions and elements incorporated. To understand the parameters that determine their structural fate, multicomponent metal-oxide nanoparticles consisting of combinations of Co, Ni, and Cu were synthesized by using scanning probe block copolymer lithography and characterized using correlated electron microscopy. These studies revealed that the miscibility, ratio of the metallic components, and the synthesis temperature determine the crystal structure and architecture of the nanoparticles. A Co-Ni-O system forms a rock salt structure largely owing to the miscibility of CoO and NiO, while Cu-Ni-O, which has large miscibility gaps, forms either homogeneous oxides, heterojunctions, or alloys depending on the annealing temperature and composition. Moreover, a higher-ordered structure, Co-Ni-Cu-O, was found to follow the behavior of lower ordered systems.
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Affiliation(s)
- Jingshan S Du
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.,International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Peng-Cheng Chen
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.,International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Brian Meckes
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA.,International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Zhuang Xie
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA.,International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Jinghan Zhu
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.,International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Yuan Liu
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA.,International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Vinayak P Dravid
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.,International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Chad A Mirkin
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA.,International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
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293
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Tian X, Zhang L, Yang M, Bai L, Dai Y, Yu Z, Pan Y. Functional magnetic hybrid nanomaterials for biomedical diagnosis and treatment. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2017; 10. [PMID: 28471067 DOI: 10.1002/wnan.1476] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 03/19/2017] [Accepted: 03/22/2017] [Indexed: 01/02/2023]
Abstract
Magnetic nanomaterials integrating supplemental functional materials are called magnetic hybrid nanomaterials (MHNs). Such MHNs have drawn increasing attention due to their biocompatibility and the potential applications either as alternative contrast enhancing agents or effective heat nanomediators in hyperthermia therapy. The joint function comes from the hybrid nanostructures. Hybrid nanostructures of different modification can be easily achieved owing to the large surface-area-to-volume ratio and sophisticated surface characteristic. In this focus article, we mainly discussed the design and synthesis of MHNs and their applications as multimodal imaging probes and therapy agents in biomedicine. These MHNs consisting magnetic nanomaterials with functional nanocomponents such as noble metal or isotopes could perform not only superparamagnetism but also features that can be adapted in, for example, enhancing computed tomography contrast modalities, positron emission tomography, and single-photon emission computed tomography. The combination of several techniques provides more comprehensive information by both synergizing the advantages, such as quantitative evaluation, higher sensitivity and spatial resolution, and mitigating the disadvantages. Such hybrid nanostructures could also provide a unique nanoplatform for enhanced medical tracing, magnetic field, and light-triggered hyperthermia. Moreover, potential advantages and opportunities will be achieved via a combination of diagnostic and therapeutic agents within a single platform, which is so-called 'theranostics.' We expect the combination of unique structural characteristics and integrated functions of multicomponent magnetic hybrid nanomaterials will attract increasing research interest and could lead to new opportunities in nanomedicine and nanobiotechnology. WIREs Nanomed Nanobiotechnol 2018, 10:e1476. doi: 10.1002/wnan.1476 This article is categorized under: Diagnostic Tools > Diagnostic Nanodevices.
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Affiliation(s)
- Xin Tian
- School of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) & Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China
| | - Lechuan Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
| | - Mo Yang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
| | - Lei Bai
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, USA
| | - Yiheng Dai
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
| | - Zhiqiang Yu
- School of Pharmaceutical Science, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou, China
| | - Yue Pan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
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294
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Leistner K, Yang M, Damm C, Oswald S, Petr A, Kataev V, Nielsch K, Kavanagh KL. Aligned cuboid iron nanoparticles by epitaxial electrodeposition. NANOSCALE 2017; 9:5315-5322. [PMID: 28398446 DOI: 10.1039/c7nr00908a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Aligned, individual iron square cuboid nanoparticles have been achieved by taking advantage of epitaxial, three-dimensional-island growth on GaAs(001) during electrodeposition at low deposition rates. The nanoparticles exhibit lateral dimensions between 10 and 80 nm and heights below 40 nm. Surface {100} facets predominate with a thin crystalline oxide shell that protects the nanoparticles during prolonged storage in air. The single crystallinity of the iron in combination with structural alignment leads to an in-plane magnetic anisotropy. These immobilized, oriented, and stable nanoparticles are promising for applications in nanoelectronic, sensor, and data storage technologies, as well as for the detailed analysis of the effect of shape and size on magnetism at the nanoscale.
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Affiliation(s)
- Karin Leistner
- IFW Dresden, P.O. Box: 270116, D-01171 Dresden, Germany.
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295
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Yan Y, Du JS, Gilroy KD, Yang D, Xia Y, Zhang H. Intermetallic Nanocrystals: Syntheses and Catalytic Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605997. [PMID: 28234403 DOI: 10.1002/adma.201605997] [Citation(s) in RCA: 232] [Impact Index Per Article: 33.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 01/11/2017] [Indexed: 05/21/2023]
Abstract
At the forefront of nanochemistry, there exists a research endeavor centered around intermetallic nanocrystals, which are unique in terms of long-range atomic ordering, well-defined stoichiometry, and controlled crystal structure. In contrast to alloy nanocrystals with no elemental ordering, it is challenging to synthesize intermetallic nanocrystals with a tight control over their size and shape. Here, recent progress in the synthesis of intermetallic nanocrystals with controllable sizes and well-defined shapes is highlighted. A simple analysis and some insights key to the selection of experimental conditions for generating intermetallic nanocrystals are presented, followed by examples to highlight the viable use of intermetallic nanocrystals as electrocatalysts or catalysts for various reactions, with a focus on the enhanced performance relative to their alloy counterparts that lack elemental ordering. Within the conclusion, perspectives on future developments in the context of synthetic control, structure-property relationships, and applications are discussed.
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Affiliation(s)
- Yucong Yan
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Jingshan S Du
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Kyle D Gilroy
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA
| | - Deren Yang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA
- School of Chemistry and Biochemistry, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Hui Zhang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
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296
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Saha A, Viswanatha R. Magnetism at the Interface of Magnetic Oxide and Nonmagnetic Semiconductor Quantum Dots. ACS NANO 2017; 11:3347-3354. [PMID: 28260377 DOI: 10.1021/acsnano.7b00711] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Engineering interfaces specifically in quantum dot (QD) heterostructures provide several prospects for developing multifunctional building block materials. Precise control over internal structure by chemical synthesis offers a combination of different properties in QDs and allows us to study their fundamental properties, depending on their structure. Herein, we studied the interface of magnetic/nonmagnetic Fe3O4/CdS QD heterostructures. In this work, we demonstrate the decrease in the size of the magnetic core due to annealing at high temperature by the decrease in saturation magnetization and blocking temperature. Furthermore, surprisingly, in a prominently optically active and magnetically inactive material such as CdS, we observe the presence of substantial exchange bias in spite of the nonmagnetic nature of CdS QDs. The presence of exchange bias was proven by the increase in magnetic anisotropy as well as the presence of exchange bias field (HE) during the field-cooled magnetic measurements. This exchange coupling was eventually traced to the in situ formation of a thin antiferromagnetic FeS layer at the interface. This is verified by the study of Fe local structure using X-ray absorption fine structure spectroscopy, demonstrating the importance of interface engineering in QDs.
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Affiliation(s)
- Avijit Saha
- New Chemistry Unit and ‡International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bangalore 560064, India
| | - Ranjani Viswanatha
- New Chemistry Unit and ‡International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bangalore 560064, India
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297
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Cai J, Miao YQ, Yu BZ, Ma P, Li L, Fan HM. Large-Scale, Facile Transfer of Oleic Acid-Stabilized Iron Oxide Nanoparticles to the Aqueous Phase for Biological Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:1662-1669. [PMID: 28146360 DOI: 10.1021/acs.langmuir.6b03360] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Fe3O4 nanoparticles synthesized via thermal decomposition in the organic phase have attracted tremendous research interest because of their unique morphology, size dispersion, and crystallinity. However, their poor water dispersibility strongly limited their development in biomedical applications. Therefore, a phase-transfer strategy through which hydrophobic nanoparticles with good performance in the aqueous phase can be obtained is an extremely critical issue. Herein, we present a large-scale, facile, highly efficient strategy for the phase transfer of oleic acid-coated Fe3O4 nanoparticles via a reverse-micelle-based oxidative reaction. The reverse micelle system improves the efficiency of the interface oxidative reaction and prevents the aggregation of nanoparticles during the reaction, facilitating the transfer of Fe3O4 nanoparticles from the organic phase to the aqueous phase. The transferred Fe3O4 nanoparticles are used as a T2 contrast agent to perform magnetic resonance imaging of CNE2 cells (nasopharyngeal carcinoma cell line). In addition, the free carboxyl groups on the surface of transferred nanoparticles can also be programmed to permit the conjugation of other molecules, in turn allowing nanoparticles to be extended in biological targeting or biological recognition applications. Therefore, this strategy offers a promising platform for the large-scale, highly efficient phase transfer of oleic acid-capped nanoparticles and may become a new paradigm to promote the development of diverse nanoparticles for widespread biomedical applications.
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Affiliation(s)
- Jing Cai
- State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center , Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | | | | | | | - Li Li
- State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center , Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
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298
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Chao CG, Kumar MP, Riaz N, Khanoyan RT, Madrahimov ST, Bergbreiter DE. Polyisobutylene Oligomers as Tools for Iron Oxide Nanoparticle Solubilization. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02407] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Chih-Gang Chao
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
| | - Manyam Praveen Kumar
- Department of Chemistry, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar
| | - Nadia Riaz
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
| | - Raquel T. Khanoyan
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
| | | | - David E. Bergbreiter
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
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299
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Miao P, Tang Y, Wang L. DNA Modified Fe 3O 4@Au Magnetic Nanoparticles as Selective Probes for Simultaneous Detection of Heavy Metal Ions. ACS APPLIED MATERIALS & INTERFACES 2017; 9:3940-3947. [PMID: 28079364 DOI: 10.1021/acsami.6b14247] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Driven by the urgent need to detect trace heavy metal ions in various real water samples, this article demonstrates for the first time an electrochemical biosensor based on DNA modified Fe3O4@Au magnetic nanoparticles (NPs). Three DNA probes are designed to contain certain mismatched base pairs. One is thiolated and modified on the surface of Fe3O4@Au NPs (DNA 1). The other two probes (DNA 2 and 3) are labeled with two independent electrochemical species. Stable structures of cytosine-Ag+-cytosine and thymine-Hg2+-thymine formed in the presence of Ag+ and Hg2+ can assist the hybridization of DNA 1/DNA 2 and DNA 1/DNA 3, which locate corresponding electrochemical species onto the surface of the magnetic NPs. The achieved nanocomposites are then used as selective electrochemical probes for the detection of heavy metal ions by recording the square wave voltammetry signals. Simultaneous detection of Ag+ and Hg2+ is demonstrated without significant interference, and their individual high sensitivities are fundamentally preserved, which meet the requirements of U.S. Environmental Protection Agency (USEPA). Furthermore, the proposed method has been challenged by various real water samples. The results confirm the DNA modified magnetic NPs based sensing method may have potential applications for the monitoring of heavy metal ions in real sample analysis.
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Affiliation(s)
- Peng Miao
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences , Suzhou 215163, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yuguo Tang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences , Suzhou 215163, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Lei Wang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences , Suzhou 215163, People's Republic of China
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300
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Chikh Alard I, Soubhye J, Berger G, Gelbcke M, Spassov S, Amighi K, Goole J, Meyer F. Triple-stimuli responsive polymers with fine tuneable magnetic responses. Polym Chem 2017. [DOI: 10.1039/c7py00218a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The formation of multi-stimuli responsive polymers exhibiting magnetic, pH and light sensitivity is reported.
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Affiliation(s)
- I. Chikh Alard
- Laboratory of Pharmaceutics and Biopharmaceutics
- Faculty of Pharmacy
- Université Libre de Bruxelles
- 1050 Brussels
- Belgium
| | - J. Soubhye
- Laboratory of Therapeutic Chemistry
- Faculty of Pharmacy
- Université Libre de Bruxelles
- 1050 Brussels
- Belgium
| | - G. Berger
- Laboratory of Therapeutic Chemistry
- Faculty of Pharmacy
- Université Libre de Bruxelles
- 1050 Brussels
- Belgium
| | - M. Gelbcke
- Laboratory of Therapeutic Chemistry
- Faculty of Pharmacy
- Université Libre de Bruxelles
- 1050 Brussels
- Belgium
| | - S. Spassov
- Institut Royal Météorologique
- Centre de Physique du Globe
- 5670 Dourbes (Viroinval)
- Belgium
| | - K. Amighi
- Laboratory of Pharmaceutics and Biopharmaceutics
- Faculty of Pharmacy
- Université Libre de Bruxelles
- 1050 Brussels
- Belgium
| | - J. Goole
- Laboratory of Pharmaceutics and Biopharmaceutics
- Faculty of Pharmacy
- Université Libre de Bruxelles
- 1050 Brussels
- Belgium
| | - F. Meyer
- Laboratory of Biopolymers and Supramolecular Nanomaterials
- Faculty of Pharmacy
- Université Libre de Bruxelles
- 1050 Brussels
- Belgium
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