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Bárcena‐González G, Hernández‐Robles A, Mayoral Á, Martinez L, Huttel Y, Galindo PL, Ponce A. Unsupervised Learning for the Segmentation of Small Crystalline Particles at the Atomic Level. CRYSTAL RESEARCH AND TECHNOLOGY 2023. [DOI: 10.1002/crat.202200211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
| | - Andrei Hernández‐Robles
- Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX 78249 USA
| | - Álvaro Mayoral
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC‐Universidad de Zaragoza Zaragoza 50009 Spain
- Advanced Microscopy Laboratory (LMA) University of Zaragoza Zaragoza 50018 Spain
| | - Lidia Martinez
- Instituto de Ciencia de Materiales de Madrid (ICMM‐CSIC) Madrid 28049 Spain
| | - Yves Huttel
- Instituto de Ciencia de Materiales de Madrid (ICMM‐CSIC) Madrid 28049 Spain
| | - Pedro L. Galindo
- Department of Computer Engineering, ESI University of Cádiz Puerto Real 11510 Spain
| | - Arturo Ponce
- Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX 78249 USA
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2
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Facile Surfactant-Free synthesis of Pd-Sn1.1Nb2O5.5F0.9@SnO2 Core–Shell Nano-Octahedrons for efficient photocatalytic ethylene oxidation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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3
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Wu K, Liu J, Chugh VK, Liang S, Saha R, Krishna VD, Cheeran MCJ, Wang JP. Magnetic nanoparticles and magnetic particle spectroscopy-based bioassays: a 15 year recap. NANO FUTURES 2022; 6:022001. [PMID: 36199556 PMCID: PMC9531898 DOI: 10.1088/2399-1984/ac5cd1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Magnetic nanoparticles (MNPs) have unique physical and chemical properties, such as high surface area to volume ratio and size-related magnetism, which are completely different from their bulk materials. Benefiting from the facile synthesis and chemical modification strategies, MNPs have been widely studied for applications in nanomedicine. Herein, we firstly summarized the designs of MNPs from the perspectives of materials and physicochemical properties tailored for biomedical applications. Magnetic particle spectroscopy (MPS), first reported in 2006, has flourished as an independent platform for many biological and biomedical applications. It has been extensively reported as a versatile platform for a variety of bioassays along with the artificially designed MNPs, where the MNPs serve as magnetic nanoprobes to specifically probe target analytes from fluid samples. In this review, the mechanisms and theories of different MPS platforms realizing volumetric- and surface-based bioassays are discussed. Some representative works of MPS platforms for applications such as disease diagnosis, food safety and plant pathology monitoring, drug screening, thrombus maturity assessments are reviewed. At the end of this review, we commented on the rapid growth and booming of MPS-based bioassays in its first 15 years. We also prospected opportunities and challenges that portable MPS devices face in the rapidly growing demand for fast, inexpensive, and easy-to-use biometric techniques.
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Affiliation(s)
- Kai Wu
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, United States of America
| | - Jinming Liu
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, United States of America
| | - Vinit Kumar Chugh
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, United States of America
| | - Shuang Liang
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, United States of America
| | - Renata Saha
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, United States of America
| | - Venkatramana D Krishna
- Department of Veterinary Population Medicine, University of Minnesota, St Paul, MN 55108, United States of America
| | - Maxim C-J Cheeran
- Department of Veterinary Population Medicine, University of Minnesota, St Paul, MN 55108, United States of America
| | - Jian-Ping Wang
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, United States of America
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, United States of America
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4
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Adhesion, mobility and aggregation of nanoclusters at surfaces: Ni and Ag on Si, HOPG and graphene. SN APPLIED SCIENCES 2022. [DOI: 10.1007/s42452-022-04944-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Abstract
An experimental investigation of Ag and Ni nanoparticles (NPs) deposited on Silicon with its native oxide, on highly oriented pyrolytic graphite and on graphene flakes is reported. The NPs were physically synthesized with a magnetron based gas aggregation source and the produced beam was mass-filtered and deposited in vacuum on the substrates. The study was concentrated on the morphology for the different cases, shedding some light on the interaction of pre-formed NPs with surfaces, a crucial aspect both of technological and scientific relevance. The nature of adhesion can be strongly influenced by the intrinsic properties of the surface (like for instance the energetics of interaction between the NP surface atoms and the first layers of the substrate) and/or the extrinsic properties, like the presence of defects, step edges, impurities and other irregularities. After adhesion, the NPs mobility and their mutual interaction are very relevant. In this work, the study was concentrated on NP/surface morphology, by using atomic force microscopy, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy.
Article highlights
Morphology of physically synthesized metal Nano-Particles (NPs) on Si, HOPG and Graphene was investigated. The NPs were pure Ag and Ni.
Coalescence, diffusion and self-aggregation and preferential adhesion were observed, with possible applications in sensor technology.
Possible explanations are: NP softness, NP/surface bonding interaction and presence of contaminant species molecules between NP.
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5
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Luna M, Barawi M, Gómez-Moñivas S, Colchero J, Rodríguez-Peña M, Yang S, Zhao X, Lu YH, Chintala R, Reñones P, Altoe V, Martínez L, Huttel Y, Kawasaki S, Weber-Bargioni A, de la Peña ÓShea VA, Yang P, Ashby PD, Salmeron M. Photoinduced Charge Transfer and Trapping on Single Gold Metal Nanoparticles on TiO 2. ACS APPLIED MATERIALS & INTERFACES 2021; 13:50531-50538. [PMID: 34641675 PMCID: PMC8554764 DOI: 10.1021/acsami.1c13662] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 10/01/2021] [Indexed: 06/13/2023]
Abstract
We present a study of the effect of gold nanoparticles (Au NPs) on TiO2 on charge generation and trapping during illumination with photons of energy larger than the substrate band gap. We used a novel characterization technique, photoassisted Kelvin probe force microscopy, to study the process at the single Au NP level. We found that the photoinduced electron transfer from TiO2 to the Au NP increases logarithmically with light intensity due to the combined contribution of electron-hole pair generation in the space charge region in the TiO2-air interface and in the metal-semiconductor junction. Our measurements on single particles provide direct evidence for electron trapping that hinders electron-hole recombination, a key factor in the enhancement of photo(electro)catalytic activity.
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Affiliation(s)
- Monica Luna
- IMN-Instituto
de Micro y Nanotecnología (CNM-CSIC), 28760 Tres Cantos, Spain
| | - Mariam Barawi
- Photoactivated
Processes Unit, IMDEA-ENERGIA, 28935 Móstoles, Spain
| | - Sacha Gómez-Moñivas
- Departamento
de Ingeniería Informática, Escuela Politécnica
Superior, Universidad Autónoma de
Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - Jaime Colchero
- Departamento
de Física, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
| | | | - Shanshan Yang
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720 United States
| | - Xiao Zhao
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720 United States
| | - Yi-Hsien Lu
- Molecular
Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720 United States
| | - Ravi Chintala
- Molecular
Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
| | - Patricia Reñones
- Photoactivated
Processes Unit, IMDEA-ENERGIA, 28935 Móstoles, Spain
| | - Virginia Altoe
- Molecular
Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
| | - Lidia Martínez
- Instituto
de Ciencia de Materiales de Madrid (ICMM-CSIC), 28049 Madrid, Spain
| | - Yves Huttel
- Instituto
de Ciencia de Materiales de Madrid (ICMM-CSIC), 28049 Madrid, Spain
| | - Seiji Kawasaki
- Molecular
Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720 United States
| | - Alexander Weber-Bargioni
- Molecular
Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
| | | | - Peidong Yang
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720 United States
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Paul D. Ashby
- Molecular
Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
| | - Miquel Salmeron
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720 United States
- Materials
Science and Engineering Department, University
of California Berkeley, Berkeley, California 94720, United States
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6
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Hybrid approaches coupling sol–gel and plasma for the deposition of oxide-based nanocomposite thin films: a review. SN APPLIED SCIENCES 2021. [DOI: 10.1007/s42452-021-04642-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
AbstractIn view of developing new materials with enhanced properties, such as nanocomposite (NC) thin films, special interest has been given in optimizing the deposition processes themselves. The latter, if well selected, could give the freedom to control the NCs synthesis and final properties. Attempting to overcome severe challenges observed when creating NC or oxide-based NC film, hybrid approaches combining injection of colloidal solutions and plasma processes have been proposed. This review focuses on oxide-based NCs, using as an example the TiO2 NPs and SiO2 matrix as NCs, while investigating their optical and dielectric properties. Additionally, this review presents the state-of-the-art in processes for the preparation of the NCs. The major categories of hybrid approaches coupling sol–gel and plasma processes are given. Finally, a comparative study among the published works is provided, aiming in highlighting the impact that each approach has on the physical and chemical characteristics of the produced NCs.
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7
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Zhao J, Mayoral A, Martínez L, Johansson MP, Djurabekova F, Huttel Y. Core-Satellite Gold Nanoparticle Complexes Grown by Inert Gas-Phase Condensation. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2020; 124:24441-24450. [PMID: 33193943 PMCID: PMC7662783 DOI: 10.1021/acs.jpcc.0c07346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/07/2020] [Indexed: 05/09/2023]
Abstract
Spontaneous growth of complexes consisted of a number of individual nanoparticles in a controlled manner, particularly in demanding environments of gas-phase synthesis, is a fascinating opportunity for numerous potential applications. Here, we report the formation of such core-satellite gold nanoparticle structures grown by magnetron sputtering inert gas condensation. Combining high-resolution scanning transmission electron microscopy and computational simulations, we reveal the adhesive and screening role of H2O molecules in formation of stable complexes consisted of one nanoparticle surrounded by smaller satellites. A single layer of H2O molecules, condensed between large and small gold nanoparticles, stabilizes positioning of nanoparticles with respect to one another during milliseconds of the synthesis time. The lack of isolated small gold nanoparticles on the substrate is explained by Brownian motion that is significantly broader for small-size particles. It is inferred that H2O as an admixture in the inert gas condensation opens up possibilities of controlling the final configuration of the different noble metal nanoparticles.
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Affiliation(s)
- Junlei Zhao
- Department
of Physics and Helsinki Institute of Physics, University of Helsinki, P.O. Box 43, FIN-00014 Helsinki, Finland
- Department
of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Alvaro Mayoral
- Institute
of Nanoscience and Materials of Aragon (INMA), Spanish National Research
Council (CSIC), University of Zaragoza, 12 Calle de Pedro Cerbuna, 50009 Zaragoza, Spain
- Laboratorio
de Microscopias Avanzadas (LMA), University
of Zaragoza, 12 Calle de Pedro Cerbuna, 50009 Zaragoza, Spain
- Center
for High-Resolution Electron Microscopy (CℏEM) School of Physical
Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai 201210, China
| | - Lidia Martínez
- Materials
Science Factory, Instituto de Ciencia de
Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz 3, 28049 Cantoblanco, Madrid, Spain
| | - Mikael P. Johansson
- Department
of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland
- CSC−IT
Center for Science, P.O. Box 405, FI-02101 Espoo, Finland
| | - Flyura Djurabekova
- Department
of Physics and Helsinki Institute of Physics, University of Helsinki, P.O. Box 43, FIN-00014 Helsinki, Finland
| | - Yves Huttel
- Materials
Science Factory, Instituto de Ciencia de
Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz 3, 28049 Cantoblanco, Madrid, Spain
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8
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Spadaro M, Humphrey JJL, Cai R, Martínez L, Haigh SJ, Huttel Y, Spencer SJ, Wain AJ, Palmer R. Electrocatalytic Behavior of PtCu Clusters Produced by Nanoparticle Beam Deposition. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2020; 124:23683-23689. [PMID: 33154785 PMCID: PMC7604936 DOI: 10.1021/acs.jpcc.0c06744] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/03/2020] [Indexed: 06/01/2023]
Abstract
State-of-the-art electrocatalysts for electrolyzer and fuel cell applications currently rely on platinum group metals, which are costly and subject to supply risks. In recent years, a vast collection of research has explored the possibility of reducing the Pt content in such catalysts by alloying with earth-abundant and cheap metals, enabling co-optimization of cost and activity. Here, using nanoparticle beam deposition, we explore the electrocatalytic performance of PtCu alloy clusters in the hydrogen evolution reaction (HER). Elemental compositions of the produced bimetallic clusters were shown by X-ray photoelectron spectroscopy (XPS) to range from 2 at. % to 38 at. % Pt, while high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) combined with energy dispersive X-ray (EDX) spectroscopy indicated that the predominant cluster morphologies could be characterized as either a fully mixed alloy or as a mixed core with a Cu-rich shell. In contrast with previous studies, a monotonic decrease in HER activity with increasing Cu content was observed over the composition range studied, with the current density measured at -0.3 V (vs reversible hydrogen electrode) scaling approximately linearly with Pt at. %. This trend opens up the possibility that PtCu could be used as a reference system for comparing the composition-dependent activity of other bimetallic catalysts.
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Affiliation(s)
- Maria
Chiara Spadaro
- College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea SA1 8EN, U.K.
| | - Jo J. L. Humphrey
- National
Physical Laboratory, Hampton Road, Teddington, TW11 0LW, U.K.
| | - Rongsheng Cai
- College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea SA1 8EN, U.K.
| | - Lidia Martínez
- Instituto
de Ciencia de Materiales de Madrid (ICMM-CSIC), C/Sor Juana Inés de la Cruz,
3, Madrid, 28049, Spain
| | - Sarah J. Haigh
- Department
of Materials, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Yves Huttel
- Instituto
de Ciencia de Materiales de Madrid (ICMM-CSIC), C/Sor Juana Inés de la Cruz,
3, Madrid, 28049, Spain
| | - Steve J. Spencer
- National
Physical Laboratory, Hampton Road, Teddington, TW11 0LW, U.K.
| | - Andrew J. Wain
- National
Physical Laboratory, Hampton Road, Teddington, TW11 0LW, U.K.
| | - Richard Palmer
- College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea SA1 8EN, U.K.
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9
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Pan X, Chen WJ, Cai H, Li H, Sun XJ, Weng B, Yi Z. A redox-active support for the synthesis of Au@SnO 2 core-shell nanostructure and SnO 2 quantum dots with efficient photoactivities. RSC Adv 2020; 10:33955-33961. [PMID: 35519050 PMCID: PMC9056741 DOI: 10.1039/d0ra06175a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 08/28/2020] [Indexed: 11/23/2022] Open
Abstract
A defect pyrochlore-type Sn1.06Nb2O5.59F0.97 (SnNbOF) nano-octahedron is used as a redox-active support for fabricating Au@SnO2 core-shell and SnO2 quantum dots at room temperature without the use of organic species or foreign reducing reagents. Gold (Au) and SnO2 components were obtained through an in situ redox reaction between the HAuCl4 and reductive Sn2+ ions incorporated in SnNbOF. The composition and morphology of the resulting nanocomposites (denoted as Au-SnNbOF) could be controlled by adjusting the Au/SnNbOF ratio. The Au-SnNbOF nanocomposites exhibited efficient photoactivities for methyl orange (MO) degradation under the visible light irradiation (λ > 420 nm), during which the MO was almost completely degraded within 8 min. Among all the samples, the 5wt% Au-SnNbOF nanocomposite had the highest rate constant (0.43 min-1), which was 40 times higher than that of the blank SnNbOF.
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Affiliation(s)
- Xiaoyang Pan
- College of Chemistry and Materials, Quanzhou Normal University Quanzhou 362000 China
| | - Wen-Jie Chen
- College of Chemistry and Materials, Quanzhou Normal University Quanzhou 362000 China
| | - Huizhen Cai
- College of Chemistry and Materials, Quanzhou Normal University Quanzhou 362000 China
| | - Hui Li
- College of Chemistry and Materials, Quanzhou Normal University Quanzhou 362000 China
| | - Xue Jiao Sun
- College of Chemistry and Materials, Quanzhou Normal University Quanzhou 362000 China
| | - Bo Weng
- cMACS, Department of Microbial and Molecular Systems, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Zhiguo Yi
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences Shanghai 200050 China
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10
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Wu K, Su D, Liu J, Saha R, Wang JP. Magnetic nanoparticles in nanomedicine: a review of recent advances. NANOTECHNOLOGY 2019; 30:502003. [PMID: 31491782 DOI: 10.1088/1361-6528/ab4241] [Citation(s) in RCA: 209] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Nanomaterials, in addition to their small size, possess unique physicochemical properties that differ from bulk materials, making them ideal for a host of novel applications. Magnetic nanoparticles (MNPs) are one important class of nanomaterials that have been widely studied for their potential applications in nanomedicine. Due to the fact that MNPs can be detected and manipulated by remote magnetic fields, it opens a wide opportunity for them to be used in vivo. Nowadays, MNPs have been used for diverse applications including magnetic biosensing (diagnostics), magnetic imaging, magnetic separation, drug and gene delivery, and hyperthermia therapy, etc. Specifically, we reviewed some emerging techniques in magnetic diagnostics such as magnetoresistive (MR) and micro-Hall (μHall) biosensors, as well as the magnetic particle spectroscopy, magnetic relaxation switching and surface enhanced Raman spectroscopy (SERS)-based bioassays. Recent advances in applying MNPs as contrast agents in magnetic resonance imaging and as tracer materials in magnetic particle imaging are reviewed. In addition, the development of high magnetic moment MNPs with proper surface functionalization has progressed exponentially over the past decade. To this end, different MNP synthesis approaches and surface coating strategies are reviewed and the biocompatibility and toxicity of surface functionalized MNP nanocomposites are also discussed. Herein, we are aiming to provide a comprehensive assessment of the state-of-the-art biological and biomedical applications of MNPs. This review is not only to provide in-depth insights into the different synthesis, biofunctionalization, biosensing, imaging, and therapy methods but also to give an overview of limitations and possibilities of each technology.
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Affiliation(s)
- Kai Wu
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, United States of America
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11
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Mayoral A, Martínez L, García-Martín JM, Fernández-Martínez I, García-Hernández M, Galiana B, Ballesteros C, Huttel Y. Tuning the size, composition and structure of Au and Co 50Au 50 nanoparticles by high-power impulse magnetron sputtering in gas-phase synthesis. NANOTECHNOLOGY 2019; 30:065606. [PMID: 30523845 PMCID: PMC6908450 DOI: 10.1088/1361-6528/aaf1fa] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Gas-phase synthesis of nanoparticles with different structural and chemical distribution is reported using a circular magnetron sputtering in an ion cluster source by applying high-power impulses. The influence of the pulse characteristics on the final deposit was evaluated on Au nanoparticles. The results have been compared with the more common direct current approach. In addition, it is shown for the first time that high-power impulses in magnetron based gas aggregation sources allows the growth of binary nanoparticles, CoAu in this case, with a variety of crystalline and chemical arrangements which are analyzed at the atomic level.
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Affiliation(s)
- A Mayoral
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai, 201210, People’s Republic of China
- Laboratorio de Microscopias Avanzadas (LMA), Instituto de Nanociencia de Aragon (INA), Universidad de Zaragoza, c/Mariano Esquillor, Edificio I + D, E-50018 Zaragoza, Spain
| | - L Martínez
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC), c/Sor Juana Inés de la Cruz, 3, E-28049 Madrid, Spain
| | - J M García-Martín
- IMN-Instituto de Micro y Nanotecnología (CNM-CSIC), c/Isaac Newton, 8, E-28760 Tres Cantos, Spain
| | - I Fernández-Martínez
- Nano4Energy SLNE, Escuela Técnica Superior de Ingenieros Industriales (ETSII-UPM), Instituto de Fusión Nuclear, c/José Gutiérrez Abascal 2, E-28006 Madrid, Spain
| | - M García-Hernández
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC), c/Sor Juana Inés de la Cruz, 3, E-28049 Madrid, Spain
| | - B Galiana
- Universidad Carlos III de Madrid, Departamento de Física, Av. Universidad 30, E-28911 Leganés, Madrid, Spain
| | - C Ballesteros
- Universidad Carlos III de Madrid, Departamento de Física, Av. Universidad 30, E-28911 Leganés, Madrid, Spain
| | - Y Huttel
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC), c/Sor Juana Inés de la Cruz, 3, E-28049 Madrid, Spain
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12
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Huttel Y, Martínez L, Mayoral A, Fernández I. Gas-Phase Synthesis of Nanoparticles: present status and perspectives. MRS COMMUNICATIONS 2018; 8:947-954. [PMID: 30298115 PMCID: PMC6173303 DOI: 10.1557/mrc.2018.169] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 08/06/2018] [Indexed: 05/24/2023]
Abstract
There is an increasing interest in the generation of well-defined nanoparticles (NPs) not only because of their size-related particular properties, but also because they are promising building blocks for more complex materials in nanotechnology. Here, we will shortly introduce the gas phase synthesis technology that has evolved rapidly in the last years and allows the fabrication of complex NPs with controllable and tuneable chemical composition and structure while keeping very good control over the size distribution. We will also address some limitations of the technology (stability over time, production yield…) and discuss possible solutions.
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Affiliation(s)
- Y Huttel
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC), c/ Sor Juana Inés de la Cruz, 3 28049 Madrid, Spain
| | - L Martínez
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC), c/ Sor Juana Inés de la Cruz, 3 28049 Madrid, Spain
| | - A Mayoral
- School of Physical Science and Technology, ShanghaiTech University, Pudong, Shanghai, 201210, China
| | - I Fernández
- Nano4Energy SLNE, Escuela Técnica Superior de Ingenieros Industriales (ETSII-UPM), Instituto de Fusión Nuclear, c/ José Gutiérrez Abascal 2, 28006 Madrid, Spain
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13
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One-step synthesis of mulberry-shaped TiO2-Au nanocomposite and its H2 evolution property under visible light. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.05.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Cresi JSP, Chiara Spadaro M, D'Addato S, Valeri S, Amidani L, Boscherini F, Bertoni G, Deiana D, Luches P. Contraction, cation oxidation state and size effects in cerium oxide nanoparticles. NANOTECHNOLOGY 2017; 28:495702. [PMID: 29016361 DOI: 10.1088/1361-6528/aa926f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
An accurate description of the structural and chemical modifications of cerium oxide nanoparticles (NPs) is mandatory for understanding their functionality in applications. In this work we investigate the relation between local atomic structure, oxidation state, defectivity and size in cerium oxide NPs with variable diameter below 10 nm, using x-ray absorption fine structure analysis in the near and extended energy range. The NPs are prepared by physical methods under controlled conditions and analyzed in morphology and crystalline quality by high resolution transmission electron microscopy. We resolve here an important question on the local structure of cerium oxide NPs: we demonstrate a progressive contraction in the Ce-O interatomic distance with decreasing NP diameter and we relate the observed effect to the reduced dimensionality. The contraction is not significantly modified by inducing a 4%-6% higher Ce3+ concentration through thermal annealing in high vacuum. The consequences of the observed average cation-anion distance contraction on the properties of the NPs are discussed.
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Affiliation(s)
- Jacopo Stefano Pelli Cresi
- Dipartimento di Scienze Fisiche Informatiche e Matematiche, Università degli Studi di Modena e Reggio Emilia, Via G. Campi 213/a, I-41125, Modena, Italy. Istituto Nanoscienze, Consiglio Nazionale delle Ricerche, Via G. Campi 213/a, I-41125, Modena, Italy
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