1
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Calovi M, Coroneo V, Rossi S. Antibacterial efficiency over time and barrier properties of wood coatings with colloidal silver. Appl Microbiol Biotechnol 2023; 107:5975-5986. [PMID: 37552252 PMCID: PMC10484803 DOI: 10.1007/s00253-023-12710-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/22/2023] [Accepted: 07/26/2023] [Indexed: 08/09/2023]
Abstract
This work aims to represent a standard application for understanding the extent of the antibacterial efficacy of coatings with different amounts of colloidal silver on wooden surfaces over time. The key variable that was intended to be evaluated in this study was the "time efficiency," with concerns about the possible efficacy in the durability of the surfaces. By highlighting the "expiry date" of the agents, as in the case with other products, the study aimed to confirm the validity of the simulation tests conducted in the laboratory with degradation tests. Furthermore, the role of the silver amount on the barrier performance of the coatings was assessed by liquid resistance, water uptake, and perspiration tests, evaluating the aesthetic durability of the coatings by means of colorimetric analyses. Ultimately, this work demonstrates that these coatings may represent alternatives in terms of prolonged antimicrobial activity when compared with the biocide agents currently in use, capable to offer good resistance to detergent solutions and to water. Nevertheless, due to silver's susceptibility to extended exposure to acidic solutions, the findings of the research discourage the utilization of colloidal silver in wood paints intended for use in public settings. KEY POINTS: • Colloidal silver does not alter the deposition process and does not introduce defects in the wood paint. • Coatings containing silver show high antimicrobial activity over time, against both E.coli and S.aureus. • The silver-based filler resists contact with detergents and aqueous solutions but suffers oxidation processes in acidic environments.
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Affiliation(s)
- Massimo Calovi
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123, Trento, Italy.
| | - Valentina Coroneo
- Department of Medical Sciences and Public Health, University of Cagliari, S.P.8 Monserrato, 09042, Cagliari, Italy
| | - Stefano Rossi
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123, Trento, Italy
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2
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Paghi A, Corsi M, Corso S, Mariani S, Barillaro G. In situ controlled and conformal coating of polydimethylsiloxane foams with silver nanoparticle networks with tunable piezo-resistive properties. NANOSCALE HORIZONS 2022; 7:425-436. [PMID: 35244124 DOI: 10.1039/d1nh00648g] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nanoparticle-polymer composites hold promise in enabling material functionalities that are difficult to achieve otherwise, yet are hampered to date by the scarce control and tunability of the nanoparticle collective properties on the polymer surface, especially for polymer foams featuring a complex three-dimensional pore network. Here we report on the controlled and conformal in situ coating of polydimethylsiloxane (PDMS) foams with silver nanoparticles (AgNPs) with surface coverage finely tunable over a large range, from 0 to 75%, via the one-step room temperature reduction of AgF directly on the PDMS surface. This enables the design of AgNP electrical networks on the PDMS foam surface with piezo-resistive properties tunable up to a factor of 1000. We leveraged the control of the piezoresistive properties of the AgNP electrical network formed on PDMS foams to fabricate flexible and wearable pressure sensors with sensitivity of 0.41 kPa-1, an operation range >120 kPa, and a detection limit of 25 Pa. As a proof-of-concept application in wearable biomedical electronics, we successfully used the sensors to monitor the real-time radial artery pulse wave on the human wrist of a young male with high resolution.
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Affiliation(s)
- Alessandro Paghi
- Dipartimento di Ingegneria dell'Informazione, Università di Pisa, via G. Caruso 16, 56122 Pisa, Italy.
| | - Martina Corsi
- Dipartimento di Ingegneria dell'Informazione, Università di Pisa, via G. Caruso 16, 56122 Pisa, Italy.
| | - Samuele Corso
- Dipartimento di Ingegneria dell'Informazione, Università di Pisa, via G. Caruso 16, 56122 Pisa, Italy.
| | - Stefano Mariani
- Dipartimento di Ingegneria dell'Informazione, Università di Pisa, via G. Caruso 16, 56122 Pisa, Italy.
| | - Giuseppe Barillaro
- Dipartimento di Ingegneria dell'Informazione, Università di Pisa, via G. Caruso 16, 56122 Pisa, Italy.
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3
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Abstract
AbstractThe corrosion of silver nanoparticles (AgNPs) on exposure to ambient air was studied using imaging and analysis in the scanning transmission electron microscope (STEM). Secondary particles are formed on exposure to ambient air, and these are more numerous and more widely distributed as the relative humidity increases. Energy-dispersive X-ray analysis (EDS) confirms that the particles contain Ag and S. Electron energy loss spectra (EELS) in the valence part of the spectrum (< ~ 50 eV) identify the corrosion product as Ag2S on comparison with spectra from reference compounds. The EELS measurements also allow for a direct visualisation of the shift in the energy of the surface plasmon peak that occurs when the corrosion product is in contact with the particle. The experiments confirm that advanced electron microscopy methods have an important role in investigating corrosion of nanoparticulate systems.
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4
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Abstract
Exploitation of common elements as photocatalysts for conversion of photons to electricity stimulates the development of a green energy strategy. In this paper, methods for the preparation of active coatings based on ZnO/Ag/CdS, which are used in the photocatalytic oxidation reaction, are examined. The physical and chemical properties of the resulting arrays were studied using optical spectrometers, an electron microscope, an X-ray diffractometer, and potentiostatic measurements and electrochemical impedance spectroscopy. The effectiveness of photocatalysts was calculated by the ability to liberate gas from aqueous solutions when exposed to light. The rate of degradation was indirectly measured with a conductometer.
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5
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Xue S, Chen SL, Ling Q, Yuan Q, Gan W. Photocatalytic redox on the surface of colloidal silver nanoparticles revealed by second harmonic generation and two-photon luminescence. Phys Chem Chem Phys 2021; 23:19752-19759. [PMID: 34524302 DOI: 10.1039/d1cp02722k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The redox of silver on the surface of Ag nanoparticles (AgNPs) has received extensive attention because of its significant impact on the biological, physical and chemical properties of AgNPs and their applications. Here we demonstrate that the surface redox reaction of AgNPs in colloids may be investigated by the second harmonic generation (SHG) and two-photon luminescence (TPL) emission from the AgNPs. It was revealed that the oxidation of silver on the surface of AgNPs was accelerated upon femtosecond laser excitation, accompanied by a decrease in the SHG and TPL emissions from the AgNPs. The photon-induced reduction of oxidized silver on AgNPs and the formation of surface defects were also revealed by the changes in the SHG and TPL emissions. Size and morphology changes have not been detected by dynamic light scattering and TEM measurements. The changes in the UV-vis extinction spectra were also very weak compared with previous reports. However, the occurrence of redox reactions on the Ag surface upon femtosecond laser irradiation has been confirmed by multiple control experiments. This work demonstrates that SHG and TPL can sensitively probe the subtle structural change on the surface of AgNPs.
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Affiliation(s)
- Shan Xue
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, also School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China.,School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China.
| | - Shun-Li Chen
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Province, Shantou University, Shantou 515063, Guangdong, China
| | - Qing Ling
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, also School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China.,School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China.
| | - Qunhui Yuan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, also School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China
| | - Wei Gan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, also School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China.,School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China.
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6
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Harroun SG, Zhang Y, Chen TH, Chang HT, Vallée-Bélisle A. Silver oxide model surface improves computational simulation of surface-enhanced Raman spectroscopy on silver nanoparticles. Phys Chem Chem Phys 2021; 23:15480-15484. [PMID: 34263277 DOI: 10.1039/d1cp01498f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Surface-enhanced Raman spectroscopy (SERS) coupled with density functional theory (DFT) computations can characterise the adsorption orientation of a molecule on a nanoparticle surface. When using DFT to simulate SERS on a silver surface, one typically employs an atom (Ag), ion (Ag+), or cluster (Agx or Agx+) as the model surface. Here, by examining the nucleobase 2,6-diaminopurine (2,6-DAP) and then generalising our strategy to three other molecules, we show that employing silver oxide (Ag2O) as the model surface can quantitatively improve the accuracy of simulated SERS.
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Affiliation(s)
- Scott G Harroun
- Laboratory of Biosensors & Nanomachines, Département de Chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada.
| | - Yaoting Zhang
- Department of Chemistry, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Tzu-Heng Chen
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan. and Laboratory of Nanoscale Biology, Institute of Bioengineering, School of Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Huan-Tsung Chang
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan.
| | - Alexis Vallée-Bélisle
- Laboratory of Biosensors & Nanomachines, Département de Chimie, Université de Montréal, Montréal, QC H3C 3J7, Canada. and Département de Biochimie et Médicine Moléculaire, Université de Montréal, Montréal, QC, H3C 3J7, Canada
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7
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Nanostructured Color Filters: A Review of Recent Developments. NANOMATERIALS 2020; 10:nano10081554. [PMID: 32784749 PMCID: PMC7466596 DOI: 10.3390/nano10081554] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 07/22/2020] [Accepted: 07/23/2020] [Indexed: 01/22/2023]
Abstract
Color plays an important role in human life: without it life would be dull and monochromatic. Printing color with distinct characteristics, like hue, brightness and saturation, and high resolution, are the main characteristic of image sensing devices. A flexible design of color filter is also desired for angle insensitivity and independence of direction of polarization of incident light. Furthermore, it is important that the designed filter be compatible with the image sensing devices in terms of technology and size. Therefore, color filter requires special care in its design, operation and integration. In this paper, we present a comprehensive review of nanostructured color filter designs described to date and evaluate them in terms of their performance.
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8
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Affiliation(s)
- Jai Prakash
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur, India
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9
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Dulski M, Peszke J, Włodarczyk J, Sułowicz S, Piotrowska-Seget Z, Dudek K, Podwórny J, Malarz K, Mrozek-Wilczkiewicz A, Zubko M, Nowak A. Physicochemical and structural features of heat treated silver-silica nanocomposite and their impact on biological properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109790. [PMID: 31349451 DOI: 10.1016/j.msec.2019.109790] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 05/23/2019] [Accepted: 05/23/2019] [Indexed: 12/28/2022]
Abstract
In the last few decades, many nanostructures with varying properties and possible applications have been developed. These materials have been intended to work in various environmental temperature conditions. In this context, the main challenge has been to comprehend the impact of synergic interaction between individual elements included in non-annealed materials in relation to systems subjected to temperature impact. Another problem has corresponded to the impact of thermal modification on organisms such as bacteria and human cells. Such problems can be solved by the fabrication of a nanocomposite with mono-dispersed 8 nm silver (Ag0 or Ag+) embedded into a silica carrier, followed by the analysis of the impact of heat treatment under various temperature conditions on its physicochemical features. Therefore, methodical studies reported in this text have shown an increase of silver particle size up to 170 nm, a decrease of its concentration, as well as the formation of sub-nanometer Ag+ and/or Ag2+ clusters as the temperature rises to 1173 K. In turn, the structurally disordered silica carrier had been entirely transformed to cristobalite and tridymite only at 1473 K as well as partial reduction of Ag2+ to Ag+. Simultaneously, inhibition of growth of Gram-positive and Gram-negative bacteria, as well as an increase in cytotoxicity towards human cells was observed as the temperature rose. As a final point, for the first time, a "pseudo" phase diagram of the structural alterations in the Ag/SiO2 nanocomposite has been created, as well as a model of silver-silica transformation to biological systems has been developed.
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Affiliation(s)
- M Dulski
- Institute of Material Science, University of Silesia, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland; Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland.
| | - J Peszke
- Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland; A. Chełkowski Institute of Physics, University of Silesia, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
| | - J Włodarczyk
- Institute of Material Science, University of Silesia, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland
| | - S Sułowicz
- Department of Microbiology, University of Silesia, Jagiellońska 28, 40-032 Katowice, Poland
| | - Z Piotrowska-Seget
- Department of Microbiology, University of Silesia, Jagiellońska 28, 40-032 Katowice, Poland
| | - K Dudek
- Łukasiewicz R&D Network, Institute of Ceramics and Building Materials, Refractory Materials Division in Gliwice, Toszecka 99, 44-100 Gliwice, Poland
| | - J Podwórny
- Łukasiewicz R&D Network, Institute of Ceramics and Building Materials, Refractory Materials Division in Gliwice, Toszecka 99, 44-100 Gliwice, Poland
| | - K Malarz
- Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland; A. Chełkowski Institute of Physics, University of Silesia, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
| | - A Mrozek-Wilczkiewicz
- Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland; A. Chełkowski Institute of Physics, University of Silesia, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
| | - M Zubko
- Institute of Material Science, University of Silesia, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland; Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland; Department of Physics, University of Hradec Králové, 500-03 Rokitanského 62, Hradec Králové, Czech Republic
| | - A Nowak
- Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland; A. Chełkowski Institute of Physics, University of Silesia, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
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10
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Huang TX, Li CW, Yang LK, Zhu JF, Yao X, Liu C, Lin KQ, Zeng ZC, Wu SS, Wang X, Yang FZ, Ren B. Rational fabrication of silver-coated AFM TERS tips with a high enhancement and long lifetime. NANOSCALE 2018; 10:4398-4405. [PMID: 29451566 DOI: 10.1039/c7nr08186c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Tip-enhanced Raman spectroscopy (TERS), known as nanospectroscopy, has received increasing interest as it can provide nanometer spatial resolution and chemical fingerprint information of samples simultaneously. Since Ag tips are well accepted to show a higher TERS enhancement than that of gold tips, there is an urgent quest for Ag TERS tips with a high enhancement, long lifetime, and high reproducibility, especially for atomic force microscopy (AFM)-based TERS. Herein, we developed an electrodeposition method to fabricate Ag-coated AFM TERS tips in a highly controllable and reproducible way. We investigated the influence of the electrodeposition potential and time on the morphology and radius of the tip. The radii of Ag-coated AFM tips can be rationally controlled at a few to hundreds nanometers, which allows us to systematically study the dependence of the TERS enhancement on the tip radius. The Ag-coated AFM tips show the highest TERS enhancement under 632.8 nm laser excitation and a broad localized surface plasmon resonance (LSPR) response when coupled to a Au substrate. The tips exhibit a lifetime of 13 days, which is particularly important for applications that need a long measuring time.
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Affiliation(s)
- Teng-Xiang Huang
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
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11
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Gangishetty MK, Scott RWJ, Kelly TL. Thermal degradation mechanism of triangular Ag@SiO2 nanoparticles. Dalton Trans 2018; 45:9827-34. [PMID: 26875498 DOI: 10.1039/c6dt00169f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Triangular silver nanoparticles are promising materials for light harvesting applications because of their strong plasmon bands; these absorption bands are highly tunable, and can be varied over the entire visible range based on the particle size. A general concern with these materials is that they are unstable at elevated temperatures. When thermally annealed, they suffer from changes to the particle morphology, which in turn affects their optical properties. Because of this stability issue, these materials cannot be used in applications requiring elevated temperatures. In order to address this problem, it is important to first understand the degradation mechanism. Here, we measure the changes in particle morphology, oxidation state, and coordination environment of Ag@SiO2 nanotriangles caused by thermal annealing. UV-vis spectroscopy and TEM reveal that upon annealing the Ag@SiO2 nanotriangles in air, the triangular cores are truncated and smaller nanoparticles are formed. Ag K-edge X-ray absorption spectroscopy (XANES and EXAFS) shows that the small particles consist of Ag(0), and that there is a decrease in the Ag-Ag coordination number with an increase in the annealing temperature. We hypothesize that upon annealing Ag in air, it is first oxidized to AgxO, after which it subsequently decomposes back to well-dispersed Ag(0) nanoparticles. In contrast, when the Ag@SiO2 nanotriangles are annealed in N2, since there is no possibility of oxidation, no small particles are formed. Instead, the triangular core rearranges to form a disc-like shape.
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Affiliation(s)
- Mahesh K Gangishetty
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada.
| | - Robert W J Scott
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada.
| | - Timothy L Kelly
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada.
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12
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Wang X, Santschi C, Martin OJF. Strong Improvement of Long-Term Chemical and Thermal Stability of Plasmonic Silver Nanoantennas and Films. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1700044. [PMID: 28544304 DOI: 10.1002/smll.201700044] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 04/21/2017] [Indexed: 06/07/2023]
Abstract
Silver (Ag) nanostructures and thin films are advantageous plasmonic materials as they have significantly lower losses than gold (Au). Unfortunately, Ag nanostructures suffer from poor chemical and thermal stability, which limit their applications. Here, the mechanisms leading to the deterioration of Ag nanostructures are clarified. It is first shown that oxygen alone cannot oxidize Ag nanostructures. Then, experiments using X-ray photoelectron spectroscopy reveal that the amount of sulfur in ambient air is too low for efficient tarnishing of the Ag surface. Finally, water is found to be the most critical factor for the degradation of Ag nanostructures and thin films. At high relative humidity, adsorbed water forms a thin film enabling the migration of Ag ions at the Ag/air interface, which deteriorates the Ag nanostructures. A dehydration treatment is developed which alters the morphology of the deposited silver, leading to an improved chemical and thermal stability of the Ag nanostructures and films, which then remain stable for more than 14 weeks under ambient laboratory conditions. In addition, dehydration also improves significantly the root-mean-square roughness for Ag thin films deposited on a glass substrate.
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Affiliation(s)
- Xiaolong Wang
- Nanophotonics and Metrology Laboratory, Swiss Federal Institute of Technology (EPFL), CH-1015, Lausanne, Switzerland
| | - Christian Santschi
- Nanophotonics and Metrology Laboratory, Swiss Federal Institute of Technology (EPFL), CH-1015, Lausanne, Switzerland
| | - Olivier J F Martin
- Nanophotonics and Metrology Laboratory, Swiss Federal Institute of Technology (EPFL), CH-1015, Lausanne, Switzerland
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13
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Novikov SM, Popok VN, Evlyukhin AB, Hanif M, Morgen P, Fiutowski J, Beermann J, Rubahn HG, Bozhevolnyi SI. Highly Stable Monocrystalline Silver Clusters for Plasmonic Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:6062-6070. [PMID: 28541708 DOI: 10.1021/acs.langmuir.7b00772] [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
Plasmonic sensor configurations utilizing localized plasmon resonances in silver nanostructures typically suffer from the rapid degradation of silver under ambient atmospheric conditions. In this work, we report on the fabrication and detailed characterization of ensembles of monocrystalline silver nanoparticles (NPs), which exhibit a long-term stability of optical properties under ambient conditions without any protective treatments. Ensembles with different densities (surface coverages) of size-selected NPs (mean diameters of 12.5 and 24 nm) on quartz substrates are fabricated using the cluster-beam technique and characterized by linear spectroscopy, two-photon-excited photoluminescence, surface-enhanced Raman scattering microscopy, and transmission electron, helium ion, and atomic force microscopies. It is found that the fabricated ensembles of monocrystalline silver NPs preserve their plasmonic properties (monitored with optical spectroscopy) and strong field enhancements (revealed by surface-enhanced Raman spectroscopy) at least 5 times longer as compared to chemically synthesized silver NPs with similar sizes. The obtained results are of high practical relevance for the further development of sensors, resonators, and metamaterials utilizing the plasmonic properties of silver NPs.
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Affiliation(s)
- Sergey M Novikov
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
| | - Vladimir N Popok
- Department of Physics and Nanotechnology, Aalborg University , Skjernvej 4A, DK-9220 Aalborg, Denmark
| | - Andrey B Evlyukhin
- Laser Zentrum Hannover e.V., Hollerithallee 8, D-30419 Hannover, Germany
- Laboratory "Nanooptomechanics", ITMO University , 49 Kronversky Avenue, 197101 St. Petersburg, Russia
| | - Muhammad Hanif
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University , Gustav Wieds Vej 14, 8000 Aarhus, Denmark
| | - Per Morgen
- Department of Chemical Engineering, Biotechnology and Environmental Technology, University of Southern Denmark , Campusvej 55, DK-5230 Odense, Denmark
| | - Jacek Fiutowski
- Mads Clausen Institute, University of Southern Denmark, NanoSYD , Alsion 2, DK-6400 Sønderborg, Denmark
| | - Jonas Beermann
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
| | - Horst-Günter Rubahn
- Mads Clausen Institute, University of Southern Denmark, NanoSYD , Alsion 2, DK-6400 Sønderborg, Denmark
| | - Sergey I Bozhevolnyi
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
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14
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Zhang Z, Chi M, Veith GM, Zhang P, Lutterman DA, Rosenthal J, Overbury SH, Dai S, Zhu H. Rational Design of Bi Nanoparticles for Efficient Electrochemical CO2 Reduction: The Elucidation of Size and Surface Condition Effects. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01297] [Citation(s) in RCA: 167] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhiyong Zhang
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Miaofang Chi
- Center
for Nanophase Materials Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Gabriel M. Veith
- Materials
Sciences and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Pengfei Zhang
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Daniel A. Lutterman
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Joel Rosenthal
- Department
of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Steven H. Overbury
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Sheng Dai
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Department
of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Huiyuan Zhu
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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15
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Clauson SL, Sylvia JM, Arcury TA, Summers P, Spencer KM. Detection of Pesticides and Metabolites Using Surface-Enhanced Raman Spectroscopy (SERS): Acephate. APPLIED SPECTROSCOPY 2015; 69:785-793. [PMID: 26036870 DOI: 10.1366/14-07594] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A protocol created for acephate detection on particulates and vapors surrounding farmworkers as well as in urine samples is reported. Acephate is detected to the low parts-per-billion (ppb) range using surface-enhanced Raman spectroscopy (SERS). Optimal SERS sensor metal choice and post-production treatments to improve sensor stability in aqueous solutions containing acephate are presented. Acephate is detected in the vapor phase and can be differentiated from urine components and structurally similar pesticides, including the acephate metabolite-degradation product methamidophos. Protocol evaluation and preliminary field tests from North Carolina farms are discussed.
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Affiliation(s)
- Susan L Clauson
- EIC Laboratories, Inc., 111 Downey Street, Norwood, MA 02062 USA
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16
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Tao Q, Li S, Ma C, Liu K, Zhang QY. A highly sensitive and recyclable SERS substrate based on Ag-nanoparticle-decorated ZnO nanoflowers in ordered arrays. Dalton Trans 2015; 44:3447-53. [DOI: 10.1039/c4dt03596h] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A periodic Ag-nanoparticle-decorated ZnO nanoflower array was fabricated as a 3D SERS substrate with ultrasensitivity, good reproducibility, recyclability, and a long service lifetime.
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Affiliation(s)
- Qiang Tao
- Key Laboratory of Materials Modification by Laser
- Ion and Electron Beams
- Ministry of Education
- and School of Physics and Opto-electronic Technology
- Dalian University of Technology
| | - Shuai Li
- Key Laboratory of Materials Modification by Laser
- Ion and Electron Beams
- Ministry of Education
- and School of Physics and Opto-electronic Technology
- Dalian University of Technology
| | - Chunyu Ma
- Key Laboratory of Materials Modification by Laser
- Ion and Electron Beams
- Ministry of Education
- and School of Physics and Opto-electronic Technology
- Dalian University of Technology
| | - Kun Liu
- Key Laboratory of Materials Modification by Laser
- Ion and Electron Beams
- Ministry of Education
- and School of Physics and Opto-electronic Technology
- Dalian University of Technology
| | - Qing-Yu Zhang
- Key Laboratory of Materials Modification by Laser
- Ion and Electron Beams
- Ministry of Education
- and School of Physics and Opto-electronic Technology
- Dalian University of Technology
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17
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Srivastava SK, Shalabney A, Khalaila I, Grüner C, Rauschenbach B, Abdulhalim I. SERS biosensor using metallic nano-sculptured thin films for the detection of endocrine disrupting compound biomarker vitellogenin. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:3579-3587. [PMID: 25340189 DOI: 10.1002/smll.201303218] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A biosensor chip is developed for the detection of a protein biomarker of endocrine disrupting compounds, vitellogenin (Vg) in aquatic environment. The sensor chip is fabricated by immobilizing anti-Vg antibody on 4-Aminothiophenol (4-ATP) coated nanosculptured thin films (nSTFs) of silver on Si substrates. The biosensor is based on the SERS of 4-ATP, enhanced by the Ag nSTFs. Before the fabrication of the sensor, the performance of the enhancement is optimized with respect to the porosity of nSTFs. Further, the biosensor is developed on the nSTF with optimized enhancement. The SERS signals are recorded from the sensor chip for varying concentrations of Vg. A control experiment is performed on another similar protein Fetuin to confirm the specificity of the sensor. The repeatability and reusability of the sensor, along with its shelf life are also checked. The limit of detection of the sensor is found to be 5 pg mL −1 of Vg in PBS within our experimental window. Apart from high sensitivity, specificity and reusability, the present sensor provides additional advantages of miniaturization, requirement of very small volumes of the analyte solution (15 μL) and fast response as compared to conventional techniques e.g., ELISA, as its response time is less than 3 minutes.
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18
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Walton BL, Verbeck GF. Soft-Landing Ion Mobility of Silver Clusters for Small-Molecule Matrix-Assisted Laser Desorption Ionization Mass Spectrometry and Imaging of Latent Fingerprints. Anal Chem 2014; 86:8114-20. [DOI: 10.1021/ac5010822] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Barbara L. Walton
- Department
of Chemistry, University of North Texas, Denton, Texas 76201, United States
| | - Guido F. Verbeck
- Department
of Chemistry, University of North Texas, Denton, Texas 76201, United States
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19
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Tan SJ, Zhang L, Zhu D, Goh XM, Wang YM, Kumar K, Qiu CW, Yang JKW. Plasmonic color palettes for photorealistic printing with aluminum nanostructures. NANO LETTERS 2014; 14:4023-9. [PMID: 24926611 DOI: 10.1021/nl501460x] [Citation(s) in RCA: 228] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We introduce the first plasmonic palette utilizing color generation strategies for photorealistic printing with aluminum nanostructures. Our work expands the visible color space through spatially mixing and adjusting the nanoscale spacing of discrete nanostructures. With aluminum as the plasmonic material, we achieved enhanced durability and dramatically reduced materials costs with our nanostructures compared to commonly used plasmonic materials such as gold and silver, as well as size regimes scalable to higher-throughput approaches such as photolithography and nanoimprint lithography. These advances could pave the way toward a new generation of low-cost, high-resolution, plasmonic color printing with direct applications in security tagging, cryptography, and information storage.
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Affiliation(s)
- Shawn J Tan
- Institute of Materials Research and Engineering, A*STAR , 3 Research Link, Singapore 117602, Singapore
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20
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Formation and optical properties of silver perfluorodecanethiolate nanoparticles. J Colloid Interface Sci 2013; 408:13-20. [DOI: 10.1016/j.jcis.2013.07.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 06/11/2013] [Accepted: 07/18/2013] [Indexed: 11/18/2022]
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21
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Altun AO, Youn SK, Yazdani N, Bond T, Park HG. Metal-dielectric-CNT nanowires for femtomolar chemical detection by surface enhanced Raman spectroscopy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:4431-4436. [PMID: 23696098 DOI: 10.1002/adma.201300571] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2013] [Revised: 03/25/2013] [Indexed: 06/02/2023]
Abstract
A highly sensitive substrate for surface enhanced Raman spectroscopy (SERS) is formed by arrays of gold-coated metallic carbon nanotubes having a nanoinsert of high-k dielectric (hafnia) as an energy coupling barrier. Repeated femtomolar detection of 1,2 bis-(4-pyridyl)-ethylene in solution demonstrates the critical contribution of this plasmonic energy coupling barrier to the enhanced chemical sensitivity.
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Affiliation(s)
- Ali Ozhan Altun
- Institute of Energy Technology, Department of Mechanical and Process Engineering, ETH Zürich, Zürich, Switzerland
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22
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Jiménez J, Sendova M, McAlpine K. Revealing oxidation kinetics of dielectric-embedded Ag nanoparticles via in situ optical microspectroscopy. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2011.12.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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23
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Han Y, Lupitskyy R, Chou TM, Stafford CM, Du H, Sukhishvili S. Effect of Oxidation on Surface-Enhanced Raman Scattering Activity of Silver Nanoparticles: A Quantitative Correlation. Anal Chem 2011; 83:5873-80. [DOI: 10.1021/ac2005839] [Citation(s) in RCA: 209] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Christopher M. Stafford
- Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
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24
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Abstract
A novel, ultra low-cost surface enhanced Raman spectroscopy (SERS) substrate has been developed by modifying the surface chemistry of cellulose paper and patterning nanoparticle arrays, all with a consumer inkjet printer. Micro/nanofabrication of SERS substrates for on-chip chemical and biomolecular analysis has been under intense investigation. However, the high cost of producing these substrates and the limited shelf life severely limit their use, especially for routine laboratory analysis and for point-of-sample analysis in the field. Paper-based microfluidic biosensing systems have shown great potential as low-cost disposable analysis tools. In this work, this concept is extended to SERS-based detection. Using an inexpensive consumer inkjet printer, cellulose paper substrates are modified to be hydrophobic in the sensing regions. Synthesized silver nanoparticles are printed onto this hydrophobic paper substrate with microscale precision to form sensing arrays. The hydrophobic surface prevents the aqueous sample from spreading throughout the paper and thus concentrates the analyte within the sensing region. A SERS fingerprint signal for Rhodamine 6G dye was observed for samples with as low as 10 femtomoles of analyte in a total sample volume of 1 μL. This extraordinarily simple technique can be used to construct SERS microarrays immediately before sample analysis, enabling ultra low-cost chemical and biomolecular detection in the lab as well as in the field at the point of sample collection.
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Affiliation(s)
- Wei W. Yu
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
| | - Ian M. White
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
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