1
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Weissman A, Sukharev M, Salomon A. Strong coupling between an inverse bowtie Nano-Antenna and a J-aggregate. J Colloid Interface Sci 2021; 610:438-445. [PMID: 34929514 DOI: 10.1016/j.jcis.2021.12.061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/30/2021] [Accepted: 12/09/2021] [Indexed: 12/19/2022]
Abstract
We demonstrate strong coupling between a single or few J-aggregates and an inverse bowtie plasmonic structure, when the J-aggregate is located at a specific axial distance from the metallic surface. Three hybrid modes are clearly observed, witnessing a strong interaction, with a Rabi splitting of up to 290 meV, the precise value of which significantly depends on the orientation of the J-aggregate with respect to the symmetry axis of the plasmonic structure. We repeated our experiments with a set of triangular hole arrays, showing consistent formation of three or more hybrid modes, in good agreement with numerical simulations.
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Affiliation(s)
- Adam Weissman
- Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Maxim Sukharev
- College of Integrative Sciences and Arts, Arizona State University, Mesa, AZ 85212, United States; Department of Physics, Arizona State University, Tempe, AZ 85287, United States
| | - Adi Salomon
- Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel.
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2
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Ren Y, Xie W, Li Y, Ma J, Li J, Liu Y, Zou Y, Deng Y. Noble Metal Nanoparticles Decorated Metal Oxide Semiconducting Nanowire Arrays Interwoven into 3D Mesoporous Superstructures for Low-Temperature Gas Sensing. ACS CENTRAL SCIENCE 2021; 7:1885-1897. [PMID: 34841059 PMCID: PMC8614104 DOI: 10.1021/acscentsci.1c00912] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Indexed: 05/07/2023]
Abstract
Mesoporous materials have been extensively studied for various applications due to their high specific surface areas and well-interconnected uniform nanopores. Great attention has been paid to synthesizing stable functional mesoporous metal oxides for catalysis, energy storage and conversion, chemical sensing, and so forth. Heteroatom doping and surface modification of metal oxides are typical routes to improve their performance. However, it still remains challenging to directly and conveniently synthesize mesoporous metal oxides with both a specific functionalized surface and heteroatom-doped framework. Here, we report a one-step multicomponent coassembly to synthesize Pt nanoparticle-decorated Si-doped WO3 nanowires interwoven into 3D mesoporous superstructures (Pt/Si-WO3 NWIMSs) by using amphiphilic poly(ethylene oxide)-block-polystyrene (PEO-b-PS), Keggin polyoxometalates (H4SiW12O40) and hydrophobic (1,5-cyclooctadiene)dimethylplatinum(II) as the as structure-directing agent, tungsten precursor and platinum source, respectively. The Pt/Si-WO3 NWIMSs exhibit a unique mesoporous structure consisting of 3D interwoven Si-doped WO3 nanowires with surfaces homogeneously decorated by Pt nanoparticles. Because of the highly porous structure, excellent transport of carriers in nanowires, and rich WO3/Pt active interfaces, the semiconductor gas sensors based on Pt/Si-WO3 NWIMSs show excellent sensing properties toward ethanol at low temperature (100 °C) with high sensitivity (S = 93 vs 50 ppm), low detection limit (0.5 ppm), fast response-recovery speed (17-7 s), excellent selectivity, and long-term stability.
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Affiliation(s)
- Yuan Ren
- Department
of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan
Hospital, State Key Laboratory of Molecular Engineering of Polymers,
Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Wenhe Xie
- Department
of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan
Hospital, State Key Laboratory of Molecular Engineering of Polymers,
Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Yanyan Li
- Department
of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan
Hospital, State Key Laboratory of Molecular Engineering of Polymers,
Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Junhao Ma
- Department
of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan
Hospital, State Key Laboratory of Molecular Engineering of Polymers,
Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Jichun Li
- Department
of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan
Hospital, State Key Laboratory of Molecular Engineering of Polymers,
Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Yan Liu
- Department
of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan
Hospital, State Key Laboratory of Molecular Engineering of Polymers,
Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Yidong Zou
- Department
of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan
Hospital, State Key Laboratory of Molecular Engineering of Polymers,
Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Yonghui Deng
- Department
of Chemistry, Department of Gastroenterology and Hepatology, Zhongshan
Hospital, State Key Laboratory of Molecular Engineering of Polymers,
Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
- State
Key Laboratory of Transducer Technology Shanghai Institute of Microsystem
and Information Technology, Chinese Academy
of Sciences, Shanghai 200050, China
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3
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Koya A, Zhu X, Ohannesian N, Yanik AA, Alabastri A, Proietti Zaccaria R, Krahne R, Shih WC, Garoli D. Nanoporous Metals: From Plasmonic Properties to Applications in Enhanced Spectroscopy and Photocatalysis. ACS NANO 2021; 15:6038-6060. [PMID: 33797880 PMCID: PMC8155319 DOI: 10.1021/acsnano.0c10945] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 03/29/2021] [Indexed: 05/04/2023]
Abstract
The field of plasmonics is capable of enabling interesting applications in different wavelength ranges, spanning from the ultraviolet up to the infrared. The choice of plasmonic material and how the material is nanostructured has significant implications for ultimate performance of any plasmonic device. Artificially designed nanoporous metals (NPMs) have interesting material properties including large specific surface area, distinctive optical properties, high electrical conductivity, and reduced stiffness, implying their potentials for many applications. This paper reviews the wide range of available nanoporous metals (such as Au, Ag, Cu, Al, Mg, and Pt), mainly focusing on their properties as plasmonic materials. While extensive reports on the use and characterization of NPMs exist, a detailed discussion on their connection with surface plasmons and enhanced spectroscopies as well as photocatalysis is missing. Here, we report on different metals investigated, from the most used nanoporous gold to mixed metal compounds, and discuss each of these plasmonic materials' suitability for a range of structural design and applications. Finally, we discuss the potentials and limitations of the traditional and alternative plasmonic materials for applications in enhanced spectroscopy and photocatalysis.
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Affiliation(s)
| | - Xiangchao Zhu
- Department
of Electrical and Computer Engineering, University of California, Santa
Cruz, California 95064, United States
| | - Nareg Ohannesian
- Department
of Electrical and Computer Engineering, University of Houston, Houston Texas 77204, United States
| | - A. Ali Yanik
- Department
of Electrical and Computer Engineering, University of California, Santa
Cruz, California 95064, United States
| | - Alessandro Alabastri
- Department
of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
| | - Remo Proietti Zaccaria
- Istituto
Italiano di Tecnologia, via Morego 30, I-16163 Genova, Italy
- Cixi
Institute of Biomedical Engineering, Ningbo Institute of Materials
Technology and Engineering, Chinese Academy
of Sciences, Zhejiang 315201, China
| | - Roman Krahne
- Istituto
Italiano di Tecnologia, via Morego 30, I-16163 Genova, Italy
| | - Wei-Chuan Shih
- Department
of Electrical and Computer Engineering, University of California, Santa
Cruz, California 95064, United States
| | - Denis Garoli
- Istituto
Italiano di Tecnologia, via Morego 30, I-16163 Genova, Italy
- Faculty of
Science and Technology, Free University
of Bozen, Piazza Università
5, 39100 Bolzano, Italy
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4
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Juhász L, Moldován K, Gurikov P, Liebner F, Fábián I, Kalmár J, Cserháti C. False Morphology of Aerogels Caused by Gold Coating for SEM Imaging. Polymers (Basel) 2021; 13:polym13040588. [PMID: 33669181 PMCID: PMC7919642 DOI: 10.3390/polym13040588] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/03/2021] [Accepted: 02/11/2021] [Indexed: 12/02/2022] Open
Abstract
The imaging of non-conducting materials by scanning electron microscopy (SEM) is most often performed after depositing few nanometers thick conductive layers on the samples. It is shown in this work, that even a 5 nm thick sputtered gold layer can dramatically alter the morphology and the surface structure of many different types of aerogels. Silica, polyimide, polyamide, calcium-alginate and cellulose aerogels were imaged in their pristine forms and after gold sputtering utilizing low voltage scanning electron microscopy (LVSEM) in order to reduce charging effects. The morphological features seen in the SEM images of the pristine samples are in excellent agreement with the structural parameters of the aerogels measured by nitrogen adsorption-desorption porosimetry. In contrast, the morphologies of the sputter coated samples are significantly distorted and feature nanostructured gold. These findings point out that extra care should be taken in order to ensure that gold sputtering does not cause morphological artifacts. Otherwise, the application of low voltage scanning electron microscopy even yields high resolution images of pristine non-conducting aerogels.
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Affiliation(s)
- Laura Juhász
- Department of Solid State Physics, University of Debrecen, Egyetem sqr. 1, H-4032 Debrecen, Hungary;
- Doctoral School of Physics, University of Debrecen, Egyetem sqr. 1, H-4032 Debrecen, Hungary
| | - Krisztián Moldován
- MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms Research Group, Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem sqr. 1, H-4032 Debrecen, Hungary; (K.M.); (I.F.)
- Doctoral School of Chemistry, University of Debrecen, Egyetem sqr. 1, H-4032 Debrecen, Hungary
| | - Pavel Gurikov
- Laboratory for Development and Modelling of Novel Nanoporous Materials, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany;
| | - Falk Liebner
- Institute for Chemistry of Renewable Resources, University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Straße 24, A-3430 Tulln, Austria;
| | - István Fábián
- MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms Research Group, Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem sqr. 1, H-4032 Debrecen, Hungary; (K.M.); (I.F.)
| | - József Kalmár
- MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms Research Group, Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem sqr. 1, H-4032 Debrecen, Hungary; (K.M.); (I.F.)
- Correspondence: (J.K.); (C.C.); Tel.: +36-52-512-900 (J.K.); +36-52-316-073 (C.C.)
| | - Csaba Cserháti
- Department of Solid State Physics, University of Debrecen, Egyetem sqr. 1, H-4032 Debrecen, Hungary;
- Correspondence: (J.K.); (C.C.); Tel.: +36-52-512-900 (J.K.); +36-52-316-073 (C.C.)
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5
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Tappan BC, Steiner Iii SA, Dervishi E, Mueller AH, Scott BL, Sheehan C, Luther EP, Lichthardt JP, Dirmyer MR. Monolithic Nanoporous Gold Foams with Catalytic Activity for Chemical Vapor Deposition Growth of Carbon Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2021; 13:1204-1213. [PMID: 33356086 DOI: 10.1021/acsami.0c17624] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
While bulk gold is generally considered to be a catalytically inactive material, nanostructured forms of gold can in fact be highly catalytically active. However, few methods exist for preparing high-purity macroscopic forms of catalytically active gold. In this work, we describe the synthesis of catalytically active macroscopic nanoporous gold foams via combustion synthesis of gold bis(tetrazolato)amine complexes. The resulting metallically pure porous gold nanoarchitectures exhibit bulk densities of <0.1 g/cm3 and Brunauer-Emmett-Teller (BET) surface areas as high as 10.9 m2/g, making them among the lowest-density and highest-surface-area monolithic forms of gold produced to date. Thanks to the presence of a highly nanostructured gold surface, such gold nanofoams have also been found to be highly catalytically active toward thermal chemical vapor deposition (CVD) growth of carbon nanotubes, providing a novel method for direct synthesis of carbon nanostructures on macroscopic gold substrates. In contrast, analogous copper nanofoams were found to be catalytically inactive toward the growth of graphitic nanostructures under the same synthesis conditions, highlighting the unusually high catalytic propensity of this form factor of gold. The combustion synthesis process described herein represents a never-wet approach for directly synthesizing macroscopic catalytically active gold. Unlike sol-gel and dealloying approaches, combustion synthesis eliminates the time-consuming diffusion-mediated steps associated with previous methods and offers multiple degrees of freedom for tuning morphology, electrical conductivity, and mechanical properties.
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Affiliation(s)
- Bryce C Tappan
- Los Alamos National Laboratory MS C920, Los Alamos, New Mexico 87545, United States
| | - Stephen A Steiner Iii
- Los Alamos National Laboratory MS C920, Los Alamos, New Mexico 87545, United States
- Aerogel Technologies, LLC, 1 Westinghouse Plaza, Boston, Massachusetts 02136, United States
| | - Enkeleda Dervishi
- Los Alamos National Laboratory MS G755, Los Alamos, New Mexico 87545, United States
| | - Alexander H Mueller
- Los Alamos National Laboratory MS C920, Los Alamos, New Mexico 87545, United States
| | - Brian L Scott
- Los Alamos National Laboratory MS J514, Los Alamos, New Mexico 87545, United States
| | - Chris Sheehan
- Los Alamos National Laboratory MS K771, Los Alamos, New Mexico 87545, United States
| | - Erik P Luther
- Los Alamos National Laboratory MS G774, Los Alamos, New Mexico 87545, United States
| | - Joseph P Lichthardt
- Los Alamos National Laboratory MS C920, Los Alamos, New Mexico 87545, United States
| | - Matthew R Dirmyer
- Los Alamos National Laboratory MS J964, Los Alamos, New Mexico 87545, United States
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6
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Ron R, Zielinski MS, Salomon A. Cathodoluminescence Nanoscopy of 3D Plasmonic Networks. NANO LETTERS 2020; 20:8205-8211. [PMID: 33054237 PMCID: PMC7662921 DOI: 10.1021/acs.nanolett.0c03317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/09/2020] [Indexed: 06/11/2023]
Abstract
Nanoporous metallic networks are endowed with the distinctive optical properties of strong field enhancement and spatial localization, raising the necessity to map the optical eigenmodes with high spatial resolution. In this work, we used cathodoluminescence (CL) to map the local electric fields of a three-dimensional (3D) silver network made of nanosized ligaments and holes over a broad spectral range. A multitude of neighboring hotspots at different frequencies and intensities are observed at subwavelength distances over the network. In contrast to well-defined plasmonic structures, the hotspots do not necessarily correlate with the network morphology, emphasizing the complexity and energy dissipation through the network. In addition, we show that the inherent connectivity of the networked structure plays a key optical role because a ligament with a single connected linker shows localized modes whereas an octopus-like ligament with multiple connections permits energy propagation through the network.
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Affiliation(s)
- Racheli Ron
- Department
of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | | | - Adi Salomon
- Department
of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
- Saints-Pères
Paris Institute for the Neurosciences, Universite
de Paris, CNRS, 75270 Paris, France
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7
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Septani CM, Wang CA, Jeng US, Su YC, Ko BT, Sun YS. Hierarchically Porous Carbon Materials from Self-Assembled Block Copolymer/Dopamine Mixtures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:11754-11764. [PMID: 32955261 DOI: 10.1021/acs.langmuir.0c01431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Hierarchically porous carbon materials with interconnected frameworks of macro- and mesopores are desirable for electrochemical applications in biosensors, electrocatalysis, and supercapacitors. In this study, we report a facile synthetic route to fabricate hierarchically porous carbon materials by controlled macro- and mesophase separation of a mixture of polystyrene-block-poly(ethylene) and dopamine. The morphology of mesopores is tailored by controlling the coassembly of PS-b-PEO and dopamine in the acidic tetrahydrofuran-water cosolvent. HCl addition plays a critical role via enhancing the charge-dipole interactions between PEO and dopamine and suppressing the clustering and chemical reactions of dopamine in solution. As a result, subsequent drying can produce interpenetrated PS-b-PEO/DA mixtures without forming dopamine microsized crystallites. Dopamine oxidative polymerization induced by solvent annealing in NH4OH vapor enables the formation of percolating macropores. Subsequent pyrolysis to selectively remove the PS-b-PEO template from the complex can produce hierarchically porous carbon materials with interconnected frameworks of macro- and mesopores when pyrolysis is implemented at a low temperature or when DA is a minor component.
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Affiliation(s)
- Cindy M Septani
- Department of Chemical and Materials Engineering, National Central University, 300 Zhongda Road, Zhongli District, Taoyuan City 32001, Taiwan
| | - Chen-An Wang
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - U-Ser Jeng
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Chia Su
- Department of Chemistry, National Chung Hsing University, 145 Xingda Road, South District, Taichung City 402, Taiwan
| | - Bao-Tsan Ko
- Department of Chemistry, National Chung Hsing University, 145 Xingda Road, South District, Taichung City 402, Taiwan
| | - Ya-Sen Sun
- Department of Chemical and Materials Engineering, National Central University, 300 Zhongda Road, Zhongli District, Taoyuan City 32001, Taiwan
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8
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From nano to macro: Hierarchical platinum superstructures synthesized using bicontinuous microemulsion for hydrogen evolution reaction. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136608] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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9
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Ji L, Spanu D, Denisov N, Recchia S, Schmuki P, Altomare M. A Dewetted-Dealloyed Nanoporous Pt Co-Catalyst Formed on TiO 2 Nanotube Arrays Leads to Strongly Enhanced Photocatalytic H 2 Production. Chem Asian J 2020; 15:301-309. [PMID: 31793241 PMCID: PMC7004064 DOI: 10.1002/asia.201901545] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 12/01/2019] [Indexed: 11/25/2022]
Abstract
Pt nanoparticles are typically decorated as co-catalyst on semiconductors to enhance the photocatalytic performance. Due to the low abundance and high cost of Pt, reaching a high activity with minimized co-catalyst loadings is a key challenge in the field. We explore a dewetting-dealloying strategy to fabricate on TiO2 nanotubes nanoporous Pt nanoparticles, aiming at improving the co-catalyst mass activity for H2 generation. For this, we sputter first Pt-Ni bi-layers of controllable thickness (nm range) on highly ordered TiO2 nanotube arrays, and then induce dewetting-alloying of the Pt-Ni bi-layers by a suitable annealing step in a reducing atmosphere: the thermal treatment causes the Pt and Ni films to agglomerate and at the same time mix with each other, forming on the TiO2 nanotube surface metal islands of a mixed PtNi composition. In a subsequent step we perform chemical dealloying of Ni that is selectively etched out from the bimetallic dewetted islands, leaving behind nanoporous Pt decorations. Under optimized conditions, the nanoporous Pt-decorated TiO2 structures show a>6 times higher photocatalytic H2 generation activity compared to structures modified with a comparable loading of dewetted, non-porous Pt. We ascribe this beneficial effect to the nanoporous nature of the dealloyed Pt co-catalyst, which provides an increased surface-to-volume ratio and thus a more efficient electron transfer and a higher density of active sites at the co-catalyst surface for H2 evolution.
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Affiliation(s)
- Lei Ji
- Department of Materials Science WW4-LKOUniversity of Erlangen-NurembergMartensstrasse 7Erlangen91058Germany
- College of Chemistry and Chemical EngineeringNortheast Petroleum UniversityProvincial Key Laboratory of Oil and Gas Chemical TechnologyDaqing163318China
| | - Davide Spanu
- Department of Materials Science WW4-LKOUniversity of Erlangen-NurembergMartensstrasse 7Erlangen91058Germany
- Department of Science and High TechnologyUniversity of InsubriaVia Valleggio 1122100ComoItaly
| | - Nikita Denisov
- Department of Materials Science WW4-LKOUniversity of Erlangen-NurembergMartensstrasse 7Erlangen91058Germany
| | - Sandro Recchia
- Department of Science and High TechnologyUniversity of InsubriaVia Valleggio 1122100ComoItaly
| | - Patrik Schmuki
- Department of Materials Science WW4-LKOUniversity of Erlangen-NurembergMartensstrasse 7Erlangen91058Germany
- Department of ChemistryFaculty of ScienceKing Abdulaziz UniversityP.O. Box 80203Jeddah21569Saudi Arabia
| | - Marco Altomare
- Department of Materials Science WW4-LKOUniversity of Erlangen-NurembergMartensstrasse 7Erlangen91058Germany
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10
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Yang J, Li Y, Zheng Y, Xu Y, Zheng Z, Chen X, Liu W. Versatile Aerogels for Sensors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1902826. [PMID: 31475442 DOI: 10.1002/smll.201902826] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 08/02/2019] [Indexed: 05/27/2023]
Abstract
Aerogels are unique solid-state materials composed of interconnected 3D solid networks and a large number of air-filled pores. They extend the structural characteristics as well as physicochemical properties of nanoscale building blocks to macroscale, and integrate typical characteristics of aerogels, such as high porosity, large surface area, and low density, with specific properties of the various constituents. These features endow aerogels with high sensitivity, high selectivity, and fast response and recovery for sensing materials in sensors such as gas sensors, biosensors and strain and pressure sensors, among others. Considerable research efforts in recent years have been devoted to the development of aerogel-based sensors and encouraging accomplishments have been achieved. Herein, groundbreaking advances in the preparation, classification, and physicochemical properties of aerogels and their sensing applications are presented. Moreover, the current challenges and some perspectives for the development of high-performance aerogel-based sensors are summarized.
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Affiliation(s)
- Jing Yang
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Yi Li
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Yuanyuan Zheng
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Yingming Xu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, P. R. China
| | - Zhikun Zheng
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Xudong Chen
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Wei Liu
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
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11
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Zielinski MS, Vardar E, Vythilingam G, Engelhardt EM, Hubbell JA, Frey P, Larsson HM. Quantitative intrinsic auto-cathodoluminescence can resolve spectral signatures of tissue-isolated collagen extracellular matrix. Commun Biol 2019; 2:69. [PMID: 30793047 PMCID: PMC6379429 DOI: 10.1038/s42003-019-0313-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 01/18/2019] [Indexed: 11/18/2022] Open
Abstract
By analyzing isolated collagen gel samples, we demonstrated in situ detection of spectrally deconvoluted auto-cathodoluminescence signatures of specific molecular content with precise spatial localization over a maximum field of view of 300 µm. Correlation of the secondary electron and the hyperspectral images proved ~40 nm resolution in the optical channel, obtained due to a short carrier diffusion length, suppressed by fibril dimensions and poor electrical conductivity specific to their organic composition. By correlating spectrally analyzed auto-cathodoluminescence with mass spectroscopy data, we differentiated spectral signatures of two extracellular matrices, namely human fibrin complex and rat tail collagen isolate, and uncovered differences in protein distributions of isolated extracellular matrix networks of heterogeneous populations. Furthermore, we demonstrated that cathodoluminescence can monitor the progress of a human cell-mediated remodeling process, where human collagenous matrix was deposited within a rat collagenous matrix. The revealed change of the heterogeneous biological composition was confirmed by mass spectroscopy. Zielinski et al. show that quantitative label-free cathodoluminescence-scanning electron microscopy differentiates spectral signatures of two extracellular matrices. This method can monitor the progress of a smooth muscle cell-mediated remodeling process without using antibodies to enhance the optical signal.
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Affiliation(s)
| | - Elif Vardar
- Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland.,Department of Pediatrics, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, 1011, Switzerland
| | - Ganesh Vythilingam
- Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland.,Department of Surgery, Faculty of Medicine, University Malaya, Kuala Lumpur, 53100, Malaysia
| | - Eva-Maria Engelhardt
- Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - Jeffrey A Hubbell
- Institute for Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Peter Frey
- Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - Hans M Larsson
- Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland.
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Ron R, Haleva E, Salomon A. Nanoporous Metallic Networks: Fabrication, Optical Properties, and Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1706755. [PMID: 29774611 DOI: 10.1002/adma.201706755] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 03/08/2018] [Indexed: 05/21/2023]
Abstract
Nanoporous metallic networks are a group of porous materials made of solid metals with suboptical wavelength sizes of both particles and voids. They are characterized by unique optical properties, as well as high surface area and permeability of guest materials. As such, they attract a great focus as novel materials for photonics, catalysis, sensing, and renewable energy. Their properties together with the ability for scaling-up evoke an increased interest also in the industrial field. Here, fabrication techniques of large-scale metallic networks are discussed, and their interesting optical properties as well as their applications are considered. In particular, the focus is on disordered systems, which may facilitate the fabrication technique, yet, endow the three-dimensional (3D) network with distinct optical properties. These metallic networks bridge the nanoworld into the macroscopic world, and therefore pave the way to the fabrication of innovative materials with unique optoelectronic properties.
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Affiliation(s)
- Racheli Ron
- Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Emir Haleva
- Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Adi Salomon
- Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan, 5290002, Israel
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