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Vasudeva N, Jayasing A, Sindogi K, Yadav I, Row TNG, Jain SK, Pandey A. Embedding plasmonic nanoparticles in soft crystals: an approach exploiting CTAB-I structures. NANOSCALE ADVANCES 2024; 6:2602-2610. [PMID: 38752143 PMCID: PMC11093265 DOI: 10.1039/d4na00008k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 02/28/2024] [Indexed: 05/18/2024]
Abstract
Embedding nanoparticles with different functionalities into soft substrates is a convenient tool to realize technologically significant multifunctional materials. This study focuses on incorporating bimetallic plasmonic nanoparticles into soft crystals made of cetyltrimethylammonium bromide-iodide. We observed the emergence of a novel symmetry-lowered cetrimonium crystal polymorph that enables the realization of strong interparticle plasmonic coupling in these composite materials. The observed crystal polymorph exhibits a triclinic structure with significantly reduced unit cell volume compared to standard CTAB. Solid-state nuclear magnetic resonance studies revealed an enhanced cetrimonium chain rigidity and a commensurate decrease in the mobility of the methyl groups. This is attributed to iodide incorporation. To study the influence of these interactions on solution phase dynamical properties, we employed light scattering measurements using gold nanospheres as markers, where we observed aggregation of these particles. We then develop a two step synthetic scheme that successfully enables high levels (533 particles per μm2) of incorporation of bimetallic plasmonic particles into the emergent crystal polymorph.
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Affiliation(s)
- Navyashree Vasudeva
- Solid State and Structural Chemistry Unit, Indian Institute of Science, CV Raman Road Bengaluru 560012 India
| | - Annie Jayasing
- Solid State and Structural Chemistry Unit, Indian Institute of Science, CV Raman Road Bengaluru 560012 India
| | - Kishorkumar Sindogi
- Solid State and Structural Chemistry Unit, Indian Institute of Science, CV Raman Road Bengaluru 560012 India
| | - Isha Yadav
- Solid State and Structural Chemistry Unit, Indian Institute of Science, CV Raman Road Bengaluru 560012 India
| | - T N Guru Row
- Solid State and Structural Chemistry Unit, Indian Institute of Science, CV Raman Road Bengaluru 560012 India
| | - Sheetal K Jain
- Solid State and Structural Chemistry Unit, Indian Institute of Science, CV Raman Road Bengaluru 560012 India
| | - Anshu Pandey
- Solid State and Structural Chemistry Unit, Indian Institute of Science, CV Raman Road Bengaluru 560012 India
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2
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Ramírez O, Bonardd S, Saldías C, Leiva A, Díaz Díaz D. Highly efficient and reusable CuAu nanoparticles supported on crosslinked chitosan hydrogels as a plasmonic catalyst for nitroarene reduction. ENVIRONMENTAL RESEARCH 2024; 247:118204. [PMID: 38224938 DOI: 10.1016/j.envres.2024.118204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/09/2024] [Accepted: 01/12/2024] [Indexed: 01/17/2024]
Abstract
The synthesis of CuAu-based monometallic (MNPs) and bimetallic nanoparticles (BNPs) supported on chitosan-based hydrogels for their application as catalysts is presented. The hydrogels consisted of chitosan chains cross-linked with tripolyphosphate (TPP) in the form of beads with an approximate average diameter of 1.81 mm. The MNPs and BNPs were obtained by the adsorption of metallic ions and their subsequent reduction with hydrazine, achieving a metallic loading of 0.297 mmol per gram of dry sample, with average nanoparticle sizes that were found between 2.6 and 4.4 nm. Both processes, metal adsorption and the stabilization of the nanoparticles, are mainly attributed to the participation of chitosan hydroxyl, amine and amide functional groups. The materials revealed important absorption bands in the visible region of the light spectra, specifically between 520 and 590 nm, mainly attributed to LSPR given the nature of the MNPs and BNPs inside the hydrogels. Subsequently, the hydrogels were evaluated as catalysts against the reduction of 4-nitrophenol (4NP) into 4-aminophenol (4AP), followed by UV-visible spectroscopy. The kinetic advance of the reaction revealed important improvements in the catalytic activity of the materials by synergistic effect of BNPs and plasmonic enhancement under visible light irradiation, given the combination of metals and the light harvesting properties of the nanocomposites. Finally, the catalytic performance of hydrogels containing BNPs CuAu 3:1 showed an important selectivity, recyclability and reusability performance, due to the relevant interaction of the BNPs with the chitosan matrix, highlighting the potential of this nanocomposite as an effective catalyst, with a potential environmental application.
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Affiliation(s)
- Oscar Ramírez
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, 7820436, Chile.
| | - Sebastián Bonardd
- Materials Physics Center, CSIC-UPV/EHU, San Sebastián, 20018, Spain; Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, University of the Basque Country UPV/EHU, Donostia-San Sebastian, 20018, Spain
| | - César Saldías
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, 7820436, Chile
| | - Angel Leiva
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, 7820436, Chile.
| | - David Díaz Díaz
- Departamento de Química Orgánica, Avda. Astrofísico Francisco Sánchez 3, La Laguna 38206, Tenerife, Spain; Instituto Universitario de Bio-Orgánica Antonio González, Astrofísico Francisco Sánchez 2, La Laguna 38206, Tenerife, Spain.
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3
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He L, Shen B, Ren Y, Mao H, Yin J, Dai W, Zhao S, Yang H. Hydroxyethylcellulose-Directed Synthesis of Gold Microplates with Hydrogen Peroxide in an Aqueous Phase. ACS OMEGA 2024; 9:8789-8796. [PMID: 38434829 PMCID: PMC10905594 DOI: 10.1021/acsomega.3c06039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 11/22/2023] [Accepted: 12/21/2023] [Indexed: 03/05/2024]
Abstract
In this study, we successfully synthesized well-defined polygonal gold microplates for the first time in an aqueous phase using hydroxyethylcellulose (HEC) in the presence of hydrogen peroxide (H2O2). HEC played a pivotal role during the synthesis, acting not only as a biotemplate but also as an in situ reduction site for the nucleation and growth of gold (Au) microplates. H2O2 played a crucial role in accelerating the growth of Au microplates from the Au nucleus. This methodology is ecofriendly and easy to operate and has potential applications in various fields, such as electronics, photonics, and biotechnology.
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Affiliation(s)
- Linlin He
- State
Key Laboratory of Advanced Technologies for Comprehensive Utilization
of Platinum Metals, Kunming Institute of
Precious Metals, Kunming 650106, People’s
Republic of China
| | - Bo Shen
- State
Key Laboratory of Advanced Technologies for Comprehensive Utilization
of Platinum Metals, Kunming Institute of
Precious Metals, Kunming 650106, People’s
Republic of China
| | - Yu Ren
- State
Key Laboratory of Advanced Technologies for Comprehensive Utilization
of Platinum Metals, Kunming Institute of
Precious Metals, Kunming 650106, People’s
Republic of China
- Yunnan
Precious Metal Laboratory Co. Ltd.,Kunming 650106,People’s Republic of China
| | - Huaming Mao
- State
Key Laboratory of Advanced Technologies for Comprehensive Utilization
of Platinum Metals, Kunming Institute of
Precious Metals, Kunming 650106, People’s
Republic of China
- Yunnan
Precious Metal Laboratory Co. Ltd.,Kunming 650106,People’s Republic of China
| | - Jungang Yin
- State
Key Laboratory of Advanced Technologies for Comprehensive Utilization
of Platinum Metals, Kunming Institute of
Precious Metals, Kunming 650106, People’s
Republic of China
- Yunnan
Precious Metal Laboratory Co. Ltd.,Kunming 650106,People’s Republic of China
| | - Wei Dai
- State
Key Laboratory of Advanced Technologies for Comprehensive Utilization
of Platinum Metals, Kunming Institute of
Precious Metals, Kunming 650106, People’s
Republic of China
- Yunnan
Precious Metal Laboratory Co. Ltd.,Kunming 650106,People’s Republic of China
| | - Shuanglong Zhao
- State
Key Laboratory of Advanced Technologies for Comprehensive Utilization
of Platinum Metals, Kunming Institute of
Precious Metals, Kunming 650106, People’s
Republic of China
- Yunnan
Precious Metal Laboratory Co. Ltd.,Kunming 650106,People’s Republic of China
| | - Hongwei Yang
- State
Key Laboratory of Advanced Technologies for Comprehensive Utilization
of Platinum Metals, Kunming Institute of
Precious Metals, Kunming 650106, People’s
Republic of China
- Yunnan
Precious Metal Laboratory Co. Ltd.,Kunming 650106,People’s Republic of China
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4
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Traoré NE, Spruck C, Uihlein A, Pflug L, Peukert W. Targeted color design of silver-gold alloy nanoparticles. NANOSCALE ADVANCES 2024; 6:1392-1408. [PMID: 38419873 PMCID: PMC10898422 DOI: 10.1039/d3na00856h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 12/05/2023] [Indexed: 03/02/2024]
Abstract
This research article focuses on the targeted color design of silver-gold alloy nanoparticles (NPs), employing a multivariate optimization approach. NP synthesis involves interconnected process parameters, making independent variation challenging. Data-based property-process relationships are established to optimize optical properties effectively. We define a color target, employ a green chemical co-reduction method at room temperature and optimize process parameters accordingly. The CIEL*a*b* color space (Commission Internationale de l'Éclairage - International Commission on Illumination) and Euclidean distances facilitate accurate color matching to establish the property-process relationship. Concurrently, theoretical Mie calculations explore the structure-property relationship across particle sizes, concentrations, and molar gold contents. The theoretically optimal structure agrees very well with experimental particle structures at the property-process relationship's optimum. The data-driven property-process relationship provides valuable insights into the formation mechanism of a complex particle system, sheds light on the role of relevant process parameters and allows to evaluate the practically available property space. Model validation beyond the original grid demonstrates its robustness, yielding colors close to the target. Additionally, Design of Experiments (DoE) methods reduce experimental work by threefold with slight accuracy trade-offs. Our novel methodology for targeted color design demonstrates how data-based methods can be utilized alongside structure-property relationships to unravel property-process relationships in the design of complex nanoparticle systems and paves the way for future developments in targeted property design.
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Affiliation(s)
- N E Traoré
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 4 91058 Erlangen Germany
- Interdisciplinary Center for Functional Particle Systems, Friedrich-Alexander-Universität Erlangen-Nürnberg Haberstraße 9a 91058 Erlangen Germany
| | - C Spruck
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 4 91058 Erlangen Germany
| | - A Uihlein
- Department of Mathematics, Chair of Applied Mathematics (Continuous Optimization), Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 11 91058 Erlangen Germany
| | - L Pflug
- FAU Competence Unit for Scientific Computing (FAU CSC), Friedrich-Alexander-Universit, ä, t Erlangen-N, ü, rnberg Martensstraße 5a 91058 Erlangen Germany
| | - W Peukert
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 4 91058 Erlangen Germany
- Interdisciplinary Center for Functional Particle Systems, Friedrich-Alexander-Universität Erlangen-Nürnberg Haberstraße 9a 91058 Erlangen Germany
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5
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Singh R, Samuel MS, Ravikumar M, Ethiraj S, Kumar M. Graphene materials in pollution trace detection and environmental improvement. ENVIRONMENTAL RESEARCH 2024; 243:117830. [PMID: 38056611 DOI: 10.1016/j.envres.2023.117830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/26/2023] [Accepted: 11/29/2023] [Indexed: 12/08/2023]
Abstract
Water scarcity is a pressing issue experienced in numerous countries and is expected to become increasingly critical in the future. Anthropogenic activities such as mining, agriculture, industries, and domestic waste discharge toxic contaminants into natural water bodies, causing pollution. Addressing these environmental crises requires tackling the challenge of removing pollutants from water. Graphene oxide (GO), a form of graphene functionalized with oxygen-containing chemical groups, has recently garnered renewed interest due to its exceptional properties. These properties include a large surface area, mechanical stability, and adjustable electrical and optical characteristics. Additionally, surface functional groups like hydroxyl, epoxy, and carboxyl groups make GO an outstanding candidate for interacting with other materials or molecules. Because of its expanded structural diversity and enhanced overall properties, GO and its composites hold significant promise for a wide range of applications in energy storage, conversion, and environmental protection. These applications encompass hydrogen storage materials, photocatalysts for water splitting, the removal of air pollutants, and water purification. Serving as electrode materials for various lithium batteries and supercapacitors. Graphene-based materials, including graphene, graphene oxide, reduced graphene oxide, graphene polymer nanocomposites, and graphene nanoparticle metal hybrids, have emerged as valuable tools in energy and environmental remediation technologies. This review article provides an overview of the significant impact of graphene-based materials in various areas. Regarding energy-related topics, this article explores the applications of graphene-based materials in supercapacitors, lithium-ion batteries, and catalysts for fuel cells. Additionally, the article investigates recent advancements in detecting and treating persistent organic pollutants (POPs) and heavy metals using nanomaterials. The article also discusses recent developments in creating innovative nanomaterials, nanostructures, and treatment methods for addressing POPs and heavy metals in water. It aims to present the field's current state and will be a valuable resource for individuals interested in nanomaterials and related materials.
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Affiliation(s)
- Rashmi Singh
- Department of Physics, Institute of Applied Sciences and Humanities, GLA University, Mathura, Uttar Pradesh, 281406, India
| | - Melvin S Samuel
- Department of Bioengineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical, Chennai, 602105, India.
| | | | - Selvarajan Ethiraj
- Department of Genetic Engineering, College of Engineering and Technology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India.
| | - Mohanraj Kumar
- Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung, 413310, Taiwan
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6
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He X, Hao T, Geng H, Li S, Ran C, Huo M, Shen Y. Sensitization Strategies of Lateral Flow Immunochromatography for Gold Modified Nanomaterials in Biosensor Development. Int J Nanomedicine 2023; 18:7847-7863. [PMID: 38146466 PMCID: PMC10749510 DOI: 10.2147/ijn.s436379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 11/28/2023] [Indexed: 12/27/2023] Open
Abstract
Gold nanomaterials have become very attractive nanomaterials for biomedical research due to their unique physical and chemical properties, including size dependent optical, magnetic and catalytic properties, surface plasmon resonance (SPR), biological affinity and structural suitability. The performance of biosensing and biodiagnosis can be significantly improved in sensitivity, specificity, speed, contrast, resolution and so on by utilizing multiple optical properties of different gold nanostructures. Lateral flow immunochromatographic assay (LFIA) based on gold nanoparticles (GNPs) has the advantages of simple, fast operation, stable technology, and low cost, making it one of the most widely used in vitro diagnostics (IVDs). However, the traditional colloidal gold (CG)-based LFIA can only achieve qualitative or semi-quantitative detection, and its low detection sensitivity cannot meet the current detection needs. Due to the strong dependence of the optical properties of gold nanomaterials on their shape and surface properties, gold-based nanomaterial modification has brought new possibilities to the IVDs: people have attempted to change the morphology and size of gold nanomaterials themselves or hybrid with other elements for application in LFIA. In this paper, many well-designed plasmonic gold nanostructures for further improving the sensitivity and signal output stability of LFIA have been summarized. In addition, some opportunities and challenges that gold-based LFIA may encounter at present or in the future are also mentioned in this paper. In summary, this paper will demonstrate some feasible strategies for the manufacture of potential gold-based nanobiosensors of post of care testing (POCT) for faster detection and more accurate disease diagnosis.
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Affiliation(s)
- Xingyue He
- State Key Laboratory of Nature Medicines, China Pharmaceutical University, Nanjing, 210009, People’s Republic of China
| | - Tianjiao Hao
- State Key Laboratory of Nature Medicines, China Pharmaceutical University, Nanjing, 210009, People’s Republic of China
| | - Hongxu Geng
- School of Pharmacy, Yantai University, Yantai, 264005, People’s Republic of China
| | - Shengzhou Li
- State Key Laboratory of Nature Medicines, China Pharmaceutical University, Nanjing, 210009, People’s Republic of China
| | - Chuanjiang Ran
- State Key Laboratory of Nature Medicines, China Pharmaceutical University, Nanjing, 210009, People’s Republic of China
| | - Meirong Huo
- State Key Laboratory of Nature Medicines, China Pharmaceutical University, Nanjing, 210009, People’s Republic of China
| | - Yan Shen
- State Key Laboratory of Nature Medicines, China Pharmaceutical University, Nanjing, 210009, People’s Republic of China
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7
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Li Y, Ren Y, Yi Z, Han S, Liu S, Long F, Zhu A. Detection of SARS-CoV-2 S protein based on FRET between carbon quantum dots and gold nanoparticles. Heliyon 2023; 9:e22674. [PMID: 38034625 PMCID: PMC10687278 DOI: 10.1016/j.heliyon.2023.e22674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 11/16/2023] [Accepted: 11/16/2023] [Indexed: 12/02/2023] Open
Abstract
The COVID-19 pandemic caused by SARS-CoV-2 virus brings nasty crisis for public health in the world. Until now, the virus has caused multiple infections in many people. Detecting antigen to SARS-CoV-2 is a powerful method for the diagnosis of COVID-19 and is helpful for controlling and stopping the pandemic. Herein, a rapid and quantitative detection method of SARS-CoV-2 spike(S) protein was built based on the fluorescence resonance energy transfer (FRET) phenomenon without complicated steps. In the process of detecting, the carbon quantum dots (CQDs) and gold nanoparticles (AuNPs) act as donor and acceptor. By modifying the SARS-CoV-2 antibodies on the surface of CQDs and AuNPs, we achieved S protein specific detection using the distance-based FRET phenomenon. Through the electric charge regulation, the limit of detection (LOD) is 0.05 ng/mL, the linear range is 0.1-100 ng/mL, and the detection process only takes 12 min. The proposed method exhibits several advantages such as be available for variants (B.1.1.529 and B.1.617.2) and be suitable for human serum, which is of significance for detecting viral in time and prevention the viral transmission.
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Affiliation(s)
- Yang Li
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Yashuang Ren
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Zhihao Yi
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Shitong Han
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Shilei Liu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Feng Long
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China
| | - Anna Zhu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
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8
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Morita T, Ogawa S, Kayama T, Ono W, Tamura S, Umeda K, Iwamatsu T, Uehara N, Konishi T. Element-ratio dependence of the 5d-states of Au and Pt in solid-solution-type Au-Pt alloy nanoparticles studied by X-ray absorption spectroscopy and density functional theory. Phys Chem Chem Phys 2023; 25:27417-27426. [PMID: 37794828 DOI: 10.1039/d3cp02900j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
Solid-solution-type Au-Pt alloy nanoparticles (NPs) were prepared from the nanoclusters of each metal using the polymer-conjugated fusion growth method. The elemental mapping analysis showed that the mixing state of the elements in the NPs drastically changed in the narrow reaction-temperature range from 100 °C to 180 °C. For their various mixing states, the 5d-states of Au and Pt atoms in the alloy NPs were investigated on the basis of the white line intensities of X-ray absorption near edge structure (XANES). Then, the 5d-states of Au and Pt atoms in a model crystalline ordered alloy structures were investigated on the basis of the theoretically calculated XANES spectra using density functional theory (DFT) in the whole composition range. The DFT calculation showed that the changes in the absorption spectra near the Pt and Au edges are caused by the change in the occupation of the Pt 5d-states and the orbital hybridisation of the Au 5d-states with the 5d-states of neighbouring Pt atoms around an Au atom, respectively.
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Affiliation(s)
- Takeshi Morita
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Shunki Ogawa
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Tomotaka Kayama
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Wataru Ono
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Shinya Tamura
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Kazuki Umeda
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Tsubasa Iwamatsu
- Graduate School of Engineering, Utsunomiya University, Utsunomiya, Tochigi 321-8585, Japan.
| | - Nobuo Uehara
- Graduate School of Engineering, Utsunomiya University, Utsunomiya, Tochigi 321-8585, Japan.
| | - Takehisa Konishi
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
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9
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Kshirsagar PG, De Matteis V, Pal S, Sangaru SS. Silver-Gold Alloy Nanoparticles (AgAu NPs): Photochemical Synthesis of Novel Biocompatible, Bimetallic Alloy Nanoparticles and Study of Their In Vitro Peroxidase Nanozyme Activity. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2471. [PMID: 37686979 PMCID: PMC10490118 DOI: 10.3390/nano13172471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 08/15/2023] [Accepted: 08/27/2023] [Indexed: 09/10/2023]
Abstract
Facile synthesis of metal nanoparticles with controlled physicochemical properties using environment-friendly reagents can open new avenues in biomedical applications. Nanomaterials with controlled physicochemical properties have opened new prospects for a variety of applications. In the present study, we report a single-step photochemical synthesis of ~5 nm-sized silver (Ag) and gold (Au) nanoparticles (NPs), and Ag-Au alloy nanoparticles using L-tyrosine. The physicochemical and surface properties of both monometallic and bimetallic NPs were investigated by analytical, spectroscopic, and microscopic techniques. Our results also displayed an interaction between L-tyrosine and surface atoms that leads to the formation of AgAu NPs by preventing the growth and aggregation of the NPs. This method efficiently produced monodispersed NPs, with a narrow-sized distribution and good stability in an aqueous solution. The cytotoxicity assessment performed on breast cancer cell lines (MCF-7) revealed that the biofriendly L-tyrosine-capped AgNPs, AuNPs, and bimetallic AgAu NPs were biocompatible. Interestingly, AgAu NPs have also unveiled controlled cytotoxicity, cell viability, and in vitro peroxidase nanozyme activity reliant on metal composition and surface coating.
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Affiliation(s)
- Prakash G. Kshirsagar
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Valeria De Matteis
- Department of Mathematics and Physics “Ennio De Giorgi”, University of Salento, 73100 Lecce, Italy;
| | - Sudipto Pal
- Department of Innovation Engineering, University of Salento, 73100 Lecce, Italy;
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10
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Yanar F, Carugo D, Zhang X. Hybrid Nanoplatforms Comprising Organic Nanocompartments Encapsulating Inorganic Nanoparticles for Enhanced Drug Delivery and Bioimaging Applications. Molecules 2023; 28:5694. [PMID: 37570666 PMCID: PMC10420199 DOI: 10.3390/molecules28155694] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Organic and inorganic nanoparticles (NPs) have attracted significant attention due to their unique physico-chemical properties, which have paved the way for their application in numerous fields including diagnostics and therapy. Recently, hybrid nanomaterials consisting of organic nanocompartments (e.g., liposomes, micelles, poly (lactic-co-glycolic acid) NPs, dendrimers, or chitosan NPs) encapsulating inorganic NPs (quantum dots, or NPs made of gold, silver, silica, or magnetic materials) have been researched for usage in vivo as drug-delivery or theranostic agents. These classes of hybrid multi-particulate systems can enable or facilitate the use of inorganic NPs in biomedical applications. Notably, integration of inorganic NPs within organic nanocompartments results in improved NP stability, enhanced bioavailability, and reduced systemic toxicity. Moreover, these hybrid nanomaterials allow synergistic interactions between organic and inorganic NPs, leading to further improvements in therapeutic efficacy. Furthermore, these platforms can also serve as multifunctional agents capable of advanced bioimaging and targeted delivery of therapeutic agents, with great potential for clinical applications. By considering these advancements in the field of nanomedicine, this review aims to provide an overview of recent developments in the use of hybrid nanoparticulate systems that consist of organic nanocompartments encapsulating inorganic NPs for applications in drug delivery, bioimaging, and theranostics.
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Affiliation(s)
- Fatih Yanar
- Department of Molecular Biology and Genetics, Bogazici University, 34342 Istanbul, Türkiye
| | - Dario Carugo
- Nuffield Department of Orthopedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford OX3 7LD, UK;
| | - Xunli Zhang
- School of Engineering, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton SO17 1BJ, UK
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11
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Googasian JS, Skrabalak SE. Practical Considerations for Simulating the Plasmonic Properties of Metal Nanoparticles. ACS PHYSICAL CHEMISTRY AU 2023; 3:252-262. [PMID: 37249938 PMCID: PMC10214510 DOI: 10.1021/acsphyschemau.2c00064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/25/2023] [Accepted: 01/25/2023] [Indexed: 05/31/2023]
Abstract
Simulating the plasmonic properties of colloidally derived metal nanoparticles with accuracy to their experimentally observed measurements is challenging due to the many structural and compositional parameters that influence their scattering and absorption properties. Correlation between single nanoparticle scattering measurements and simulated spectra emphasize these strong structural and compositional relationships, providing insight into the design of plasmonic nanoparticles. This Perspective builds from this history to highlight how the structural features of models used in simulation methods such as those based on the Finite-Difference Time-Domain (FDTD) method and Discrete Dipole Approximation (DDA) are of critical consideration for correlation with experiment and ultimately prediction of new nanoparticle properties. High-level characterizations such as electron tomography are discussed as ways to advance the accuracy of models used in such simulations, allowing the plasmonic properties of structurally complex nanoparticles to be better understood. However, we also note that the field is far from bringing experiment and simulation into agreement for plasmonic nanoparticles with complex compositions, reflecting analytical challenges that inhibit accurate model generation. Potential directions for addressing these challenges are also presented.
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12
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Cui X, Ruan Q, Zhuo X, Xia X, Hu J, Fu R, Li Y, Wang J, Xu H. Photothermal Nanomaterials: A Powerful Light-to-Heat Converter. Chem Rev 2023. [PMID: 37133878 DOI: 10.1021/acs.chemrev.3c00159] [Citation(s) in RCA: 75] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
All forms of energy follow the law of conservation of energy, by which they can be neither created nor destroyed. Light-to-heat conversion as a traditional yet constantly evolving means of converting light into thermal energy has been of enduring appeal to researchers and the public. With the continuous development of advanced nanotechnologies, a variety of photothermal nanomaterials have been endowed with excellent light harvesting and photothermal conversion capabilities for exploring fascinating and prospective applications. Herein we review the latest progresses on photothermal nanomaterials, with a focus on their underlying mechanisms as powerful light-to-heat converters. We present an extensive catalogue of nanostructured photothermal materials, including metallic/semiconductor structures, carbon materials, organic polymers, and two-dimensional materials. The proper material selection and rational structural design for improving the photothermal performance are then discussed. We also provide a representative overview of the latest techniques for probing photothermally generated heat at the nanoscale. We finally review the recent significant developments of photothermal applications and give a brief outlook on the current challenges and future directions of photothermal nanomaterials.
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Affiliation(s)
- Ximin Cui
- State Key Laboratory of Radio Frequency Heterogeneous Integration, College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, China
| | - Qifeng Ruan
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System & Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen 518055, China
| | - Xiaolu Zhuo
- Guangdong Provincial Key Lab of Optoelectronic Materials and Chips, School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Shenzhen 518172, China
| | - Xinyue Xia
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Jingtian Hu
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Runfang Fu
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Yang Li
- State Key Laboratory of Radio Frequency Heterogeneous Integration, College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Hongxing Xu
- School of Physics and Technology and School of Microelectronics, Wuhan University, Wuhan 430072, Hubei, China
- Henan Academy of Sciences, Zhengzhou 450046, Henan, China
- Wuhan Institute of Quantum Technology, Wuhan 430205, Hubei, China
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13
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Kumari S, Islam M, Gupta A. Paper-based multiplex biosensors for inexpensive healthcare diagnostics: a comprehensive review. Biomed Microdevices 2023; 25:17. [PMID: 37133791 DOI: 10.1007/s10544-023-00656-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2023] [Indexed: 05/04/2023]
Abstract
Multiplex detection is a smart and an emerging approach in point-of-care testing as it reduces analysis time and testing cost by detecting multiple analytes or biomarkers simultaneously which are crucial for disease detection at an early stage. Application of inexpensive substrate such as paper has immense potential and matter of research interest in the area of point of care testing for multiplexed analysis as it possesses several unique advantages. This study presents the use of paper, strategies adopted to refine the design created on paper and lateral flow strips to enhance the signal, increase the sensitivity and specificity of multiplexed biosensors. An overview of different multiplexed detection studies performed using biological samples has also been reviewed along with the challenges and advantages offered by multiplexed analysis.
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Affiliation(s)
- Shrishti Kumari
- Department of Mechanical Engineering, Indian Institute of Technology Jodhpur 342037, Rajasthan, India
| | - Monsur Islam
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Ankur Gupta
- Department of Mechanical Engineering, Indian Institute of Technology Jodhpur 342037, Rajasthan, India.
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14
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Chinnabathini VC, Dingenen F, Borah R, Abbas I, van der Tol J, Zarkua Z, D'Acapito F, Nguyen THT, Lievens P, Grandjean D, Verbruggen SW, Janssens E. Gas phase deposition of well-defined bimetallic gold-silver clusters for photocatalytic applications. NANOSCALE 2023; 15:6696-6708. [PMID: 36938628 DOI: 10.1039/d2nr07287d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Cluster beam deposition is employed for fabricating well-defined bimetallic plasmonic photocatalysts to enhance their activity while facilitating a more fundamental understanding of their properties. AuxAg1-x clusters with compositions (x = 0, 0.1, 0.3, 0.5, 0.7, 0.9 and 1) spanning the metals' miscibility range were produced in the gas-phase and soft-landed on TiO2 P25-coated silicon wafers with an optimal coverage of 4 atomic monolayer equivalents. Electron microscopy images show that at this coverage most clusters remain well dispersed whereas EXAFS data are in agreement with the finding that the deposited clusters have an average size of ca. 5 nm and feature the same composition as the ablated alloy targets. A composition-dependant electron transfer from Au to Ag that is likely to impart chemical stability to the bimetallic clusters and protect Ag atoms against oxidation is additionally evidenced by XPS and XANES. Under simulated solar light, AuxAg1-x clusters show a remarkable composition-dependent volcano-type enhancement of their photocatalytic activity towards degradation of stearic acid, a model compound for organic fouling on surfaces. The Formal Quantum Efficiency (FQE) is peaking at the Au0.3Ag0.7 composition with a value that is twice as high as that of the pristine TiO2 P25 under solar simulator. Under UV the FQE of all compositions remains similar to that of pristine TiO2. A classical electromagnetic simulation study confirms that among all compositions Au0.3Ag0.7 features the largest near-field enhancement in the wavelength range of maximal solar light intensity, as well as sufficient individual photon energy resulting in a better photocatalytic self-cleaning activity. This allows ascribing the mechanism for photocatalysis mostly to the plasmonic effect of the bimetallic clusters through direct electron injection and near-field enhancement from the resonant cluster towards the conduction band of TiO2. These results not only demonstrate the added value of using well-defined bimetallic nanocatalysts to enhance their photocatalytic activity but also highlights the potential of the cluster beam deposition to design tailored noble metal modified photocatalytic surfaces with controlled compositions and sizes without involving potentially hazardous chemical agents.
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Affiliation(s)
- Vana Chinnappa Chinnabathini
- Quantum Solid-State Physics, Department of Physics and Astronomy, KU Leuven, Belgium.
- Sustainable Energy, Air & Water Technology (DuEL), University of Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerpen, Groenenborgerlaan 171, 2020, Antwerpen, Belgium
| | - Fons Dingenen
- Sustainable Energy, Air & Water Technology (DuEL), University of Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerpen, Groenenborgerlaan 171, 2020, Antwerpen, Belgium
| | - Rituraj Borah
- Sustainable Energy, Air & Water Technology (DuEL), University of Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerpen, Groenenborgerlaan 171, 2020, Antwerpen, Belgium
| | - Imran Abbas
- Quantum Solid-State Physics, Department of Physics and Astronomy, KU Leuven, Belgium.
| | - Johan van der Tol
- Quantum Solid-State Physics, Department of Physics and Astronomy, KU Leuven, Belgium.
| | - Zviadi Zarkua
- Quantum Solid-State Physics, Department of Physics and Astronomy, KU Leuven, Belgium.
| | | | - Thi Hong Trang Nguyen
- Quantum Solid-State Physics, Department of Physics and Astronomy, KU Leuven, Belgium.
| | - Peter Lievens
- Quantum Solid-State Physics, Department of Physics and Astronomy, KU Leuven, Belgium.
| | - Didier Grandjean
- Quantum Solid-State Physics, Department of Physics and Astronomy, KU Leuven, Belgium.
| | - Sammy W Verbruggen
- Sustainable Energy, Air & Water Technology (DuEL), University of Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerpen, Groenenborgerlaan 171, 2020, Antwerpen, Belgium
| | - Ewald Janssens
- Quantum Solid-State Physics, Department of Physics and Astronomy, KU Leuven, Belgium.
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15
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Ciocarlan RG, Blommaerts N, Lenaerts S, Cool P, Verbruggen SW. Recent Trends in Plasmon-Assisted Photocatalytic CO 2 Reduction. CHEMSUSCHEM 2023; 16:e202201647. [PMID: 36626298 DOI: 10.1002/cssc.202201647] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Direct photocatalytic reduction of CO2 has become an highly active field of research. It is thus of utmost importance to maintain an overview of the various materials used to sustain this process, find common trends, and, in this way, eventually improve the current conversions and selectivities. In particular, CO2 photoreduction using plasmonic photocatalysts under solar light has gained tremendous attention, and a wide variety of materials has been developed to reduce CO2 towards more practical gases or liquid fuels (CH4 , CO, CH3 OH/CH3 CH2 OH) in this manner. This Review therefore aims at providing insights in current developments of photocatalysts consisting of only plasmonic nanoparticles and semiconductor materials. By classifying recent studies based on product selectivity, this Review aims to unravel common trends that can provide effective information on ways to improve the photoreduction yield or possible means to shift the selectivity towards desired products, thus generating new ideas for the way forward.
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Affiliation(s)
- Radu-George Ciocarlan
- Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Natan Blommaerts
- Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Silvia Lenaerts
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Pegie Cool
- Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Sammy W Verbruggen
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
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16
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Traoré NE, Uttinger MJ, Cardenas Lopez P, Drobek D, Gromotka L, Schmidt J, Walter J, Apeleo Zubiri B, Spiecker E, Peukert W. Green room temperature synthesis of silver-gold alloy nanoparticles. NANOSCALE ADVANCES 2023; 5:1450-1464. [PMID: 36866254 PMCID: PMC9972530 DOI: 10.1039/d2na00793b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
Metallic alloy nanoparticles (NPs) exhibit interesting optical, electrical and catalytic properties, dependent on their size, shape and composition. In particular, silver-gold alloy NPs are widely applied as model systems to better understand the syntheses and formation (kinetics) of alloy NPs, as the two elements are fully miscible. Our study targets product design via environmentally friendly synthesis conditions. We use dextran as the reducing and stabilizing agent for the synthesis of homogeneous silver-gold alloy NPs at room temperature. Our approach is a one-pot, low temperature, reaction-controlled, green and scalable synthesis route of well-controlled composition and narrow particle size distribution. The composition over a broad range of molar gold contents is confirmed by scanning transmission electron microscopy-energy-dispersive X-ray spectroscopy (STEM-EDX) measurements and auxiliary inductively coupled plasma-optical emission spectroscopy measurements (ICP-OES). The distributions of the resulting particles in size and composition are obtained from multi-wavelength analytical ultracentrifugation using the optical back coupling method and further confirmed by high-pressure liquid chromatography. Finally, we provide insight into the reaction kinetics during the synthesis, discuss the reaction mechanism and demonstrate possibilities for scale-up by a factor of more than 250 by increasing the reactor volume and NP concentration.
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Affiliation(s)
- N E Traoré
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 4 91058 Erlangen Germany
- Interdisciplinary Center for Functional Particle Systems, Friedrich-Alexander-Universität Erlangen-Nürnberg Haberstraße 9a 91058 Erlangen Germany
| | - M J Uttinger
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 4 91058 Erlangen Germany
- Interdisciplinary Center for Functional Particle Systems, Friedrich-Alexander-Universität Erlangen-Nürnberg Haberstraße 9a 91058 Erlangen Germany
| | - P Cardenas Lopez
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 4 91058 Erlangen Germany
- Interdisciplinary Center for Functional Particle Systems, Friedrich-Alexander-Universität Erlangen-Nürnberg Haberstraße 9a 91058 Erlangen Germany
| | - D Drobek
- Institute of Micro- and Nanostructure Research (IMN), Center for Nanoanalysis and Electron Microscopy (CENEM), Interdisciplinary Center for Nanostructured Films (IZNF), Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 3 91058 Erlangen Germany
| | - L Gromotka
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 4 91058 Erlangen Germany
- Interdisciplinary Center for Functional Particle Systems, Friedrich-Alexander-Universität Erlangen-Nürnberg Haberstraße 9a 91058 Erlangen Germany
| | - J Schmidt
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 4 91058 Erlangen Germany
- Interdisciplinary Center for Functional Particle Systems, Friedrich-Alexander-Universität Erlangen-Nürnberg Haberstraße 9a 91058 Erlangen Germany
| | - J Walter
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 4 91058 Erlangen Germany
- Interdisciplinary Center for Functional Particle Systems, Friedrich-Alexander-Universität Erlangen-Nürnberg Haberstraße 9a 91058 Erlangen Germany
| | - B Apeleo Zubiri
- Institute of Micro- and Nanostructure Research (IMN), Center for Nanoanalysis and Electron Microscopy (CENEM), Interdisciplinary Center for Nanostructured Films (IZNF), Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 3 91058 Erlangen Germany
| | - E Spiecker
- Institute of Micro- and Nanostructure Research (IMN), Center for Nanoanalysis and Electron Microscopy (CENEM), Interdisciplinary Center for Nanostructured Films (IZNF), Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 3 91058 Erlangen Germany
| | - W Peukert
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstraße 4 91058 Erlangen Germany
- Interdisciplinary Center for Functional Particle Systems, Friedrich-Alexander-Universität Erlangen-Nürnberg Haberstraße 9a 91058 Erlangen Germany
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17
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Tandon B, Gibbs SL, Dean C, Milliron DJ. Highly Responsive Plasmon Modulation in Dopant-Segregated Nanocrystals. NANO LETTERS 2023; 23:908-915. [PMID: 36656798 DOI: 10.1021/acs.nanolett.2c04199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Electron transfer to and from metal oxide nanocrystals (NCs) modulates their infrared localized surface plasmon resonance (LSPR), revealing fundamental aspects of their photophysics and enabling dynamic optical applications. We synthesized and chemically reduced dopant-segregated Sn-doped In2O3 NCs, investigating the influence of radial dopant segregation on LSPR modulation and near-field enhancement (NFE). We found that core-doped NCs show large LSPR shifts and NFE change during chemical titration, enabling broadband modulation in LSPR energy of over 1000 cm-1 and of peak extinction over 300%. Simulations reveal that the evolution of the LSPR spectra during chemical reduction results from raising the surface Fermi level and increasing the donor defect density in the shell region. These results establish dopant segregation as a useful strategy to engineer the dynamic optical modulation in plasmonic semiconductor NC heterostructures going beyond what is possible with conventional plasmonic metals.
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Affiliation(s)
- Bharat Tandon
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Stephen L Gibbs
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Christopher Dean
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Delia J Milliron
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
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18
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Bai X, Jarubula R. Development of novel green synthesized Zinc oxide nanoparticles with antibacterial activity and effect on diabetic wound healing process of excisional skin wounds in nursing care during sports training. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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19
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Dong L, Liu B, Maenosono S, Yang J. Multifunctional Au@Ag@SiO 2 Core-Shell-Shell Nanoparticles for Metal-Enhanced Fluorescence, Surface-Enhanced Raman Scattering, and Photocatalysis Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1593-1599. [PMID: 36668988 DOI: 10.1021/acs.langmuir.2c03031] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Au@Ag@SiO2 core-shell-shell nanoparticles (NPs) were prepared by a facile one-pot synthetic technique. The Au@Ag core size and SiO2 shell thicknesses are readily controlled by adjusting the precursor concentration. The multilayered NPs with dielectric SiO2 outer shells and bimetallic Au@Ag cores exhibited both the chemical stability of Au with the high scattering efficiency of Ag. Furthermore, the SiO2 shell is beneficial to the metal-enhanced fluorescence for biomedical applications. Metal-enhanced fluorescence, surface-enhanced Raman scattering, and photocatalytic activities of silica-coated Au@Ag, Ag, Au, and Au/Ag core-shell NPs were compared and discussed. The size and structure of Au@Ag@SiO2 core-shell-shell NPs were optimized to maximize their optical and catalytic activities.
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Affiliation(s)
- Li Dong
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Bin Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Shinya Maenosono
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Jianhui Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
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20
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Costa M, Carreiro EP, Filho CMC, Silva M, Gonçalves I, Souza EF, Teixeira APS, Craveiro A, Burke AJ. Chitosan Salts as Stabilizing Agents for the Synthesis of Silver Nanoparticles (AgNPs). ChemistrySelect 2023. [DOI: 10.1002/slct.202203413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Marina Costa
- LAQV-REQUIMTE, Institute for Research and Advanced Studies University of Évora Rua Romão Ramalho 59 7000-671 Évora Portugal
| | - Elisabete P. Carreiro
- LAQV-REQUIMTE, Institute for Research and Advanced Studies University of Évora Rua Romão Ramalho 59 7000-671 Évora Portugal
| | | | - Mara Silva
- BRinova Bioquímica Rua Fernando Seno, n° 6 7005-485 Évora Portugal
| | - Isabel Gonçalves
- BRinova Bioquímica Rua Fernando Seno, n° 6 7005-485 Évora Portugal
| | - Esmar F. Souza
- BRinova Bioquímica Rua Fernando Seno, n° 6 7005-485 Évora Portugal
| | - António P. S. Teixeira
- LAQV-REQUIMTE, Institute for Research and Advanced Studies University of Évora Rua Romão Ramalho 59 7000-671 Évora Portugal
- Department of Medical and Health Sciences, School of Health and Human Development University of Évora Rua Romão Ramalho 59 7000-671 Évora Portugal
| | | | - Anthony J. Burke
- LAQV-REQUIMTE, Institute for Research and Advanced Studies University of Évora Rua Romão Ramalho 59 7000-671 Évora Portugal
- Department of Chemistry and Biochemistry, School of Science and Technology University of Évora Rua Romão Ramalho 59 7000-671 Évora Portugal
- Faculty of Pharmacy University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba 3000-548 Coimbra Portugal
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21
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Parambath JBM, Ahmady IM, Panicker S, Sin A, Han C, Mohamed AA. Correlation notice on the electrochemical dealloying and antibacterial properties of gold-silver alloy nanoparticles. Biometals 2022; 35:1307-1323. [PMID: 36149568 DOI: 10.1007/s10534-022-00446-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 09/12/2022] [Indexed: 12/14/2022]
Abstract
Galvanic replacement reaction was used in the synthesis of bimetallic gold-silver alloy nanoparticles (Au-Ag NPs), where pre-synthesized Ag nanoparticles-polyvinylpyrrolidone (AgNPs-PVP) were used to reduce the aryldiazonium tetrachloroaurate(III) salt in water. TEM images and EDS elemental analysis showed the formation of spherical Au-Ag NPs with sizes of 12.8 ± 4.9 nm and 25.6 ± 14.4 nm for corresponding Au-Ag ratios and termed as Au0.91Ag0.09 and Au0.79Ag0.21, respectively, with different concentrations of the gold precursor. The hydrodynamic sizes measured using dynamic light scattering are 46.4 nm and 74.8 nm with corresponding zeta potentials of - 44.56 and - 25.09 mV in water, for Au0.91Ag0.09 and Au0.79Ag0.21 respectively. Oxidative leachability of Ag ion studies from the starting AgNPs-PVP in 1 M NaCl showed a significant decrease in the plasmon peak after 8 h, indicating the complete dissolution of Ag ions, however, there is enhanced oxidation resistivity of Ag from Au-Ag NPs even after 24 h. Electrochemical studies on glassy carbon electrodes displayed a low oxidation peak in aqueous solutions of 20 mM KCl at 0.16 V and KNO3 at 0.33 V vs. saturated calomel electrode (SCE). We studied the antibacterial activity of Au-Ag alloy nanoparticles against gram-positive Staphylococcus aureus, Staphylococcus epidermidis, Enterococcus faecalis, and gram-negative Escherichia coli, Salmonella typhimurium, and Pseudomonas aeruginosa. Our findings demonstrated superior antibacterial activity of Au-Ag NPs compared with AgNPs-PVP. Moreover, the nanoparticles inhibited the S. epidermidis biofilm formation.
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Affiliation(s)
- Javad B M Parambath
- Department of Chemistry, University of Sharjah, Sharjah, 27272, United Arab Emirates
| | - Islam M Ahmady
- Department of Applied Biology, University of Sharjah, Sharjah, 27272, United Arab Emirates
| | - Seema Panicker
- Department of Chemistry, University of Sharjah, Sharjah, 27272, United Arab Emirates
| | - Aebin Sin
- Program in Environmental & Polymer Engineering, Graduate School, INHA University, Incheon, 22212, Republic of Korea
| | - Changseok Han
- Program in Environmental & Polymer Engineering, Graduate School, INHA University, Incheon, 22212, Republic of Korea
- Department of Environmental Engineering, INHA University, Incheon, 22212, Republic of Korea
| | - Ahmed A Mohamed
- Department of Chemistry, University of Sharjah, Sharjah, 27272, United Arab Emirates.
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22
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Woessner ZJ, Lewis GR, Bueno SLA, Ringe E, Skrabalak SE. Asymmetric seed passivation for regioselective overgrowth and formation of plasmonic nanobowls. NANOSCALE 2022; 14:16918-16928. [PMID: 36345669 DOI: 10.1039/d2nr05182f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Plasmonic nanoparticles (NPs) have garnered excitement over the past several decades stemming from their unique optoelectronic properties, leading to their use in various sensing applications and theranostics. Symmetry dictates the properties of many nanomaterials, and nanostructures with low, but still defined symmetries, often display markedly different properties compared to their higher symmetry counterparts. While numerous methods are available to manipulate symmetry, surface protecting groups such as polymers are finding use due to their ability to achieve regioselective modification of NP seeds, which can be removed after overgrowth as shown here. Specifically, poly(styrene-b-polyacrylic acid) (PSPAA) is used to asymmetrically passivate cubic Au seeds through competition with hexadecyltrimethylammonium bromide (CTAB) ligands. The asymmetric passivation via collapsed PSPAA causes only select vertices and faces of the Au cubes to be available for deposition of new material (i.e., Au, Au-Ag alloy, and Au-Pd alloy) during seeded overgrowth. At low metal precursor concentrations, deposition follows observations from unpassivated seeds but with new material growing from only the exposed seed portions. At high metal precursor concentrations, nanobowl-like structures form from interaction between the depositing phase and the passivating PSPAA. Through experiment and simulation, the optoelectronic properties of these nanobowls were probed, finding that the interiors and exteriors of the nanobowls can be functionalized selectively as revealed by surface enhanced Raman spectroscopy (SERS).
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Affiliation(s)
- Zachary J Woessner
- Department of Chemistry, Indiana University - Bloomington, 800 E. Kirkwood Ave., Bloomington, Indiana 47405, USA.
| | - George R Lewis
- Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, UK, CB3 0FS.
| | - Sandra L A Bueno
- Department of Chemistry, Indiana University - Bloomington, 800 E. Kirkwood Ave., Bloomington, Indiana 47405, USA.
| | - Emilie Ringe
- Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, UK, CB3 0FS.
- Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, UK, CB2 3EQ
| | - Sara E Skrabalak
- Department of Chemistry, Indiana University - Bloomington, 800 E. Kirkwood Ave., Bloomington, Indiana 47405, USA.
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23
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Lelouche SNK, Biglione C, Horcajada P. Advances in plasmonic-based MOF composites, their bio-applications and perspectives in this field. Expert Opin Drug Deliv 2022; 19:1417-1434. [PMID: 36176048 DOI: 10.1080/17425247.2022.2130245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Nanomaterials have been used for bio-applications since the late 20st century. In an attempt to tailor and optimize their properties, and by extension their efficiency, composites have attracted considerable attention. In this regard, recent studies on plasmonic nanoparticles and metal-organic framework (NP@MOF) composites suggested these materials show great promise in this field. AREAS COVERED This review focused on the more recent scientific advances in the synthetic strategies to optimize plasmonic MOF nanocomposites currently available, as well as their bio-application, particularly as biosensors and therapy. EXPERT OPINION Plasmonic MOF nanocomposites have shown great potential as they combine the properties of both materials with proven efficiency in bio-application. On the one hand, nanoMOFs have proven their potential particularly as drug nanocarriers, owing to their exceptional porosity and tunability. On the other hand, plasmonic nanoparticles have been an asset for imaging and phototherapy. Different strategies have been reported to develop these nanocomposites, mainly including core-shell, encapsulation, and in situ reduction. In addition, advanced composite structures should be considered, such as mixed metal nanoparticles, hollow structures or the combination of several approaches. Specifically, plasmonic MOF nanocomposites prove to be attractive stimuli responsive drug delivery systems, phototherapeutic agents as well as highly sensitive biosensors.
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Affiliation(s)
- Sorraya N K Lelouche
- Advanced Porous Materials Unit, IMDEA Energy Institute, Avda. Ramón de la Sagra 3, 28935 Móstoles-Madrid, Spain
| | - Catalina Biglione
- Advanced Porous Materials Unit, IMDEA Energy Institute, Avda. Ramón de la Sagra 3, 28935 Móstoles-Madrid, Spain
| | - Patricia Horcajada
- Advanced Porous Materials Unit, IMDEA Energy Institute, Avda. Ramón de la Sagra 3, 28935 Móstoles-Madrid, Spain
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Cardenas Lopez P, Uttinger MJ, Traoré NE, Khan HA, Drobek D, Apeleo Zubiri B, Spiecker E, Pflug L, Peukert W, Walter J. Multidimensional characterization of noble metal alloy nanoparticles by multiwavelength analytical ultracentrifugation. NANOSCALE 2022; 14:12928-12939. [PMID: 36043498 DOI: 10.1039/d2nr02633c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this study, we introduce a method for the simultaneous retrieval of two-dimensional size-composition distributions of noble metal Ag-Au alloy nanoparticles utilizing an analytical ultracentrifuge equipped with a multiwavelength extinction detector (MWL-AUC). MWL-AUC is used to measure coupled optical and sedimentation properties of the particles. The optical response of the nanoparticles is calculated using Mie's theory, where the particles' complex refractive index is corrected due to the effect of reduced mean free path of electrons. Using a combined analysis of the hydrodynamic and spectral data captured by MWL-AUC, the size and composition of the alloy particles is retrieved. Our method is validated through the analysis of synthetic data and by the very good agreement between experimental scanning transmission electron microscopy and our AUC data. The presented comprehensive characterization approach contributes to improved synthesis, scale-up and production of particulate systems as it provides a simple, fast and direct method to determine noble metal alloy nanoparticle size and composition distributions simultaneously.
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Affiliation(s)
- P Cardenas Lopez
- Institute of Particle Technology (LFG), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstr. 4, 91058 Erlangen, Germany.
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstr. 9a, 91058 Erlangen, Germany
| | - M J Uttinger
- Institute of Particle Technology (LFG), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstr. 4, 91058 Erlangen, Germany.
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstr. 9a, 91058 Erlangen, Germany
| | - N E Traoré
- Institute of Particle Technology (LFG), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstr. 4, 91058 Erlangen, Germany.
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstr. 9a, 91058 Erlangen, Germany
| | - H A Khan
- Competence Unit for Scientific Computing (CSC), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Martensstr. 5a, 91058 Erlangen, Germany
| | - D Drobek
- Institute of Micro- and Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM), Interdisciplinary Center for Nanostructured Films (IZNF), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstr. 3, 91058 Erlangen, Germany
| | - B Apeleo Zubiri
- Institute of Micro- and Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM), Interdisciplinary Center for Nanostructured Films (IZNF), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstr. 3, 91058 Erlangen, Germany
| | - E Spiecker
- Institute of Micro- and Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM), Interdisciplinary Center for Nanostructured Films (IZNF), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstr. 3, 91058 Erlangen, Germany
| | - L Pflug
- Competence Unit for Scientific Computing (CSC), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Martensstr. 5a, 91058 Erlangen, Germany
| | - W Peukert
- Institute of Particle Technology (LFG), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstr. 4, 91058 Erlangen, Germany.
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstr. 9a, 91058 Erlangen, Germany
| | - J Walter
- Institute of Particle Technology (LFG), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstr. 4, 91058 Erlangen, Germany.
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstr. 9a, 91058 Erlangen, Germany
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25
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Abkhalimov E, Ershov V, Ershov B. Determination of the Concentration of Silver Atoms in Hydrosol Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3091. [PMID: 36144882 PMCID: PMC9504487 DOI: 10.3390/nano12183091] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 09/01/2022] [Accepted: 09/03/2022] [Indexed: 06/16/2023]
Abstract
In this work, we propose a new method for determining the concentration of silver atoms in hydrosols of nanoparticles (NPs) stabilized with various capping agents. The proposed method is based on the determination of IBT absorption in the UV region (a broad band with a weakly pronounced shoulder at ~250 nm). To determine the extinction coefficient at 250 nm, we synthesized silver nanoparticles with average sizes of 5, 10, and 25 nm, respectively. The prepared nanoparticles were characterized by TEM, HRTEM, electron diffraction, XRD, DLS, and UV-Vis spectroscopy. It has been shown that the absorption characteristics of spherical NPs are not significantly influenced by the hydrosol preparation method and the type of stabilizer used. For particles with a size of 5-25 nm, the molar extinction coefficient of Ag0 atoms was found to be equal to 3500 ± 100 L mol-1 cm-1 at a wavelength of 250 nm. The results of the theoretical calculations of the molar extinction coefficients for spherical nanoparticles are in good agreement with the experimental values. ICP-MS analysis confirmed the applicability of this method in the concentration range of 5 × 10-7-1 × 10-4 mol L-1.
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26
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Bartschmid T, Farhadi A, Musso ME, Goerlitzer ESA, Vogel N, Bourret GR. Self-Assembled Au Nanoparticle Monolayers on Silicon in Two- and Three-Dimensions for Surface-Enhanced Raman Scattering Sensing. ACS APPLIED NANO MATERIALS 2022; 5:11839-11851. [PMID: 36062062 PMCID: PMC9425434 DOI: 10.1021/acsanm.2c01904] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/03/2022] [Indexed: 05/05/2023]
Abstract
Gold nanoparticle/silicon composites are canonical substrates for sensing applications because of their geometry-dependent physicochemical properties and high sensing activity via surface-enhanced Raman spectroscopy (SERS). The self-assembly of gold nanoparticles (AuNPs) synthesized via wet-chemistry on functionalized flat silicon (Si) and vertically aligned Si nanowire (VA-SiNW) arrays is a simple and cost-effective approach to prepare such substrates. Herein, we report on the critical parameters that influence nanoparticle coverage, aggregation, and assembly sites in two- and three-dimensions to prepare substrates with homogeneous optical properties and SERS activity. We show that the degree of AuNP aggregation on flat Si depends on the silane used for the Si functionalization, while the AuNP coverage can be adjusted by the incubation time in the AuNP solution, both of which directly affect the substrate properties. In particular, we report the reproducible synthesis of nearly touching AuNP chain monolayers where the AuNPs are separated by nanoscale gaps, likely to be formed due to the capillary forces generated during the drying process. Such substrates, when used for SERS sensing, produce a uniform and large enhancement of the Raman signal due to the high density of hot spots that they provide. We also report the controlled self-assembly of AuNPs on VA-SiNW arrays, which can provide even higher Raman signal enhancement. The directed assembly of the AuNPs in specific regions of the SiNWs with a control over NP density and monolayer morphology (i.e., isolated vs nearly touching NPs) is demonstrated, together with its influence on the resulting SERS activity.
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Affiliation(s)
- Theresa Bartschmid
- Department
of Chemistry and Physics of Materials, University
of Salzburg, Jakob Haringer Strasse 2A, 5020 Salzburg, Austria
| | - Amin Farhadi
- Department
of Chemistry and Physics of Materials, University
of Salzburg, Jakob Haringer Strasse 2A, 5020 Salzburg, Austria
| | - Maurizio E. Musso
- Department
of Chemistry and Physics of Materials, University
of Salzburg, Jakob Haringer Strasse 2A, 5020 Salzburg, Austria
| | - Eric Sidney Aaron Goerlitzer
- Institute
of Particle Technology, Friedrich-Alexander University Erlangen-Nürnberg, Cauerstrasse 4, 91058 Erlangen, Germany
| | - Nicolas Vogel
- Institute
of Particle Technology, Friedrich-Alexander University Erlangen-Nürnberg, Cauerstrasse 4, 91058 Erlangen, Germany
| | - Gilles R. Bourret
- Department
of Chemistry and Physics of Materials, University
of Salzburg, Jakob Haringer Strasse 2A, 5020 Salzburg, Austria
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27
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He N, Wei S, Hu T, Ye Y, Cai Y, Liu J, Li P, Liang C. Surface-Plasmon-Mediated Alloying for Monodisperse Au-Ag Alloy Nanoparticles in Liquid. Inorg Chem 2022; 61:12449-12457. [PMID: 35904272 DOI: 10.1021/acs.inorgchem.2c01975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Plasmonic noble-metal nanoparticles with broadly tunable optical properties and catalytically active surfaces offer a unique opportunity for photochemistry. Resonant optical excitation of surface-plasmon generates high-energy hot carriers, which can participate in photochemical reactions. Although the surface-plasmon-driven catalysis on molecules has been extensively studied, surface-plasmon-mediated synthesis of bimetallic nanomaterials is less reported. Herein, we perform a detailed investigation on the formation mechanism and colloidal stability of monodisperse Au-Ag alloy nanoparticles synthesized through irradiating the intermixture of Au nanochains and AgNO3 solution with a nanosecond pulsed laser. It is revealed that the Ag atoms can be extracted from AgNO3 solution by surface-plasmon-generated hot electrons and alloy with Au atoms. Particularly, the obtained Au-Ag alloy nanoparticles without any surfactants or ligands exhibit superior stability that is confirmed by experiments as well as DLVO-based theoretical simulation. Our work would provide novel insights into the synthesis of potentially useful bimetallic nanoparticles via surface-plasmon-medicated alloying.
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Affiliation(s)
- Ningning He
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Shuxian Wei
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Taiping Hu
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Yixing Ye
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Yunyu Cai
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Jun Liu
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Pengfei Li
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Changhao Liang
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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Zhu Y, Qiu X, Chen X, Huang M, Li Y. Single gold nanowire-based nanosensor for adenosine triphosphate sensing by using in-situ surface-enhanced Raman scattering technique. Talanta 2022; 249:123675. [PMID: 35716474 DOI: 10.1016/j.talanta.2022.123675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 06/02/2022] [Accepted: 06/09/2022] [Indexed: 10/31/2022]
Abstract
Development of new hot spots for surface enhanced Raman scattering (SERS) technique is of great significance recently. Herein, we developed a single Au nanowire (NW)-based nanosensor for adenosine triphosphate (ATP) sensing by using in-situ SERS technique. Single Au NWs, fabricated by laser-assisted pulling method and hydrofluoric acid (HF) etching process, were linked with single-stranded HS-terminated DNA. After that, gold-silver bimetallic nanoparticles (Au/Ag NPs), attached with thiol-containing Raman dyes and ATP aptamer, were immobilized on DNA-modified single AuNW due to the designed affinity between ATP aptamer and single-stranded DNA. This single AuNW-based device exhibited strong SERS signals. In the presence of adenosine triphosphate (ATP), due to the strong specific affinity between the aptamer and the target, the Au/Ag NPs will be separated from the AuNW, resulting in the obvious decrease of the Raman signals, which can be used for ATP sensing with high sensitivity, selectivity and stability. This nanosensor can be used as an ideal platform for real applications, especially at some confined-space samples, such as trace detection, single cell and in vivo analysis.
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Affiliation(s)
- Yanyan Zhu
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, PR China
| | - Xia Qiu
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, PR China
| | - Xiaohu Chen
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, PR China
| | - Mimi Huang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, PR China
| | - Yongxin Li
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, PR China.
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29
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Chen C, Wang J, Lu D, You R, She Q, Chen J, Feng S, Lu Y. Early detection of lung cancer via biointerference-free, target microRNA-triggered core-satellite nanocomposites. NANOSCALE 2022; 14:8103-8111. [PMID: 35612288 DOI: 10.1039/d1nr07670a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
MicroRNAs (miRNAs) are emerging as essential liquid biopsy markers for early cancer detection. Currently, the clinical applications of miRNAs are lagging behind due to their high sequence similarity and rarity. Herein, we propose biointerference-free, target-triggered core-satellite nanocomposites for ultrasensitive surface-enhanced Raman spectroscopy (SERS) detection of lung cancer-related miRNA-21. Through the hybridization-based recognition effect, we observe an enormous SERS signal enhancement caused by miRNA-21-triggered assembly of core-satellite nanocomposites. This enables the sensitive detection of miRNA-21 down to the 0.1 fM level in a linear range of 10 fM to 1 nM. The use of a biointerference-free reporter further allows quantitative and direct detection of miRNA-21 from complex plasma samples, without RNA pre-extraction. As a proof of principle, we measure the level of plasma miRNA-21 in 20 lung cancer patients and 10 healthy participants. Significantly higher levels of miRNA-21 are determined in lung cancer patients than in healthy participants, with clear lower expression in stage I (n = 10) than in stage III-IV (n = 10) lung cancer patients. We, therefore, believe that this proposed strategy will have high clinical potential for sensitive quantification of miRNA markers in liquid biopsy samples and act as a complementary method for the early detection of lung cancer.
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Affiliation(s)
- Cairou Chen
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of advanced Oriented Chemical Engineer, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou, Fujian, 350007, China.
| | - Jing Wang
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, Fujian, 350007, China.
| | - Dechan Lu
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of advanced Oriented Chemical Engineer, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou, Fujian, 350007, China.
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, Fujian, 350007, China.
| | - Ruiyun You
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of advanced Oriented Chemical Engineer, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou, Fujian, 350007, China.
| | - Qiutian She
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of advanced Oriented Chemical Engineer, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou, Fujian, 350007, China.
| | - Jingbo Chen
- Department of Oncology, Shengli Clinical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou, Fujian, 350001, China
| | - Shangyuan Feng
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, Fujian, 350007, China.
| | - Yudong Lu
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of advanced Oriented Chemical Engineer, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou, Fujian, 350007, China.
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Dieperink M, Scalerandi F, Albrecht W. Correlating structure, morphology and properties of metal nanostructures by combining single-particle optical spectroscopy and electron microscopy. NANOSCALE 2022; 14:7460-7472. [PMID: 35481561 DOI: 10.1039/d1nr08130f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The nanoscale morphology of metal nanostructures directly defines their optical, catalytic and electronic properties and even small morphological changes can cause significant property variations. On the one hand, this dependence allows for precisely tuning and exploring properties by shape engineering; next to advanced synthesis protocols, post-synthesis modification through tailored laser modification has become an emerging tool to do so. On the other hand, with this interconnection also comes the quest for detailed structure-property correlation and understanding of laser-induced reshaping processes on the individual nanostructure level beyond ensemble averages. With the development of single-particle (ultrafast) optical spectroscopy techniques and advanced electron microscopy such understanding can in principle be gained at the femtosecond temporal and atomic spatial scale, respectively. However, accessing both on the same individual nanostructure is far from straightforward as it requires the combination of optical spectroscopy and electron microscopy. In this Minireview, we highlight key studies from recent years that performed such correlative measurements on the same individual metal nanostructure either in a consecutive ex situ manner or in situ inside the electron microscope. We demonstrate that such a detailed correlation is critical for revealing the full picture of the structure-property relationship and the physics behind light-induced nanostructure modifications. We put emphasis on the advantages and disadvantages of each methodology as well as on the unique information that one can gain only by correlative studies performed on the same individual nanostructure and end with an outlook on possible further development of this field in the near future.
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Affiliation(s)
- Mees Dieperink
- Department of Sustainable Energy Materials, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands.
| | - Francesca Scalerandi
- Department of Sustainable Energy Materials, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands.
| | - Wiebke Albrecht
- Department of Sustainable Energy Materials, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands.
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31
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Jo S, Woo JY, Oh JH, Song CW, Yang HM, Han CS. Asymmetric Dichroic Colors in Stretchable Film with Embedded Au/Ag Alloy Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2022; 14:23734-23742. [PMID: 35536180 DOI: 10.1021/acsami.2c01767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We present a new type of stretchable dichroic film in which Au and Ag alloy nanoparticles (NPs) are dispersed in polydimethylsiloxane (PDMS). The alloy NPs are synthesized with different atomic compositions and sizes to modulate their plasmonic resonance frequencies and absorption and scattering cross sections. The PDMS dichroic film in which 100 nm alloy NPs with a Au/Ag ratio of 7:3 are dispersed shows exotic optical properties under tensile strain. When 40% tensile strain is applied, the film exhibits a strain-sensitive transmission and strain-insensitive reflection behavior in which the transmittance is increased up to 2.6 times, whereas the reflectance remains unchanged. Moreover, we demonstrate a stretchable anticounterfeiting film and a flexible dichroic sculpture fabricated with the PDMS composite. This work demonstrates a new type of plasmonic application that has great potential in various applications, such as special-purpose optical films, security patterns, and smart windows.
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Affiliation(s)
- Sunghwan Jo
- Institute of Advanced Machinery Design Technology, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Republic of Korea
| | - Ju Yeon Woo
- Institute of Advanced Machinery Design Technology, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Republic of Korea
| | - Jun Ho Oh
- School of Mechanical Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Republic of Korea
| | - Chang-Woo Song
- School of Mechanical Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Republic of Korea
| | - Hee Min Yang
- School of Mechanical Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Republic of Korea
| | - Chang-Soo Han
- Institute of Advanced Machinery Design Technology, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Republic of Korea
- School of Mechanical Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Republic of Korea
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32
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Hidayah AN, Herbani Y, Steven E, Subhan A, Triyono D, Isnaeni, Suliyanti MM, Shiddiq M. Tuning the electrical properties of colloidal nanoalloys by varying their composition. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Saad Y, Gazzah MH, Mougin K, Selmi M, Belmabrouk H. Sensitive Detection of SARS-CoV-2 Using a Novel Plasmonic Fiber Optic Biosensor Design. PLASMONICS (NORWELL, MASS.) 2022; 17:1489-1500. [PMID: 35493722 PMCID: PMC9034078 DOI: 10.1007/s11468-022-01639-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 04/11/2022] [Indexed: 06/01/2023]
Abstract
The coronavirus (COVID-19) pandemic has put the entire world at risk and caused an economic downturn in most countries. This work provided theoretical insight into a novel fiber optic-based plasmonic biosensor that can be used for sensitive detection of SARS-CoV-2. The aim was always to achieve reliable, sensitive, and reproducible detection. The proposed configuration is based on Ag-Au alloy nanoparticle films covered with a layer of graphene which promotes the molecular adsorption and a thiol-tethered DNA layer as a ligand. Here, the combination of two recent approaches in a single configuration is very promising and can only lead to considerable improvement. We have theoretically analyzed the sensor performance in terms of sensitivity and resolution. To highlight the importance of the new configuration, a comparison was made with two other sensors. One is based on gold nanoparticles incorporated into a host medium; the other is composed of a bimetallic Ag-Au layer in the massive state. The numerical results obtained have been validated and show that the proposed configuration offers better sensitivity (7100 nm\RIU) and good resolution (figure of merit; FOM = 38.88 RIU - 1 and signal-to-noise ratio; SNR = 0.388). In addition, a parametric study was performed such as the graphene layers' number and the size of the nanoparticles.
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Affiliation(s)
- Yosra Saad
- Laboratory of Quantum and Statistical Physics, Faculty of Sciences of Monastir, University of Monastir, 5019 Monastir, Tunisia
| | - Mohamed Hichem Gazzah
- Laboratory of Quantum and Statistical Physics, Faculty of Sciences of Monastir, University of Monastir, 5019 Monastir, Tunisia
| | - Karine Mougin
- University of Haute-Alsace, Institute of Materials Science of Mulhouse, IS2M-CNRS-UMR 7361, 15 Rue Jean Starcky, 68057 Mulhouse, France
| | - Marwa Selmi
- Laboratory of Electronics and Microelectronics, Faculty of Science of Monastir, University of Monastir, 5019 Monastir, Tunisia
| | - Hafedh Belmabrouk
- Laboratory of Electronics and Microelectronics, Faculty of Science of Monastir, University of Monastir, 5019 Monastir, Tunisia
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Roy D, Pal A, Pal T. Electrochemical aspects of coinage metal nanoparticles for catalysis and spectroscopy. RSC Adv 2022; 12:12116-12135. [PMID: 35481094 PMCID: PMC9021847 DOI: 10.1039/d2ra00403h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 04/01/2022] [Indexed: 12/11/2022] Open
Abstract
Down scaling bulk materials can cause colloidal systems to evolve into microscopically dispersed insoluble particles. Herein, we describe the interesting applications of coinage metal nanoparticles (MNPs) as colloid dispersions especially gold and silver. The rich plasmon bands of gold and silver in the visible range are elaborated using the plasmon resonance and redox potential values of grown metal microelectrode (GME). The gradation of their standard reduction potential values (E 0), as evaluated from the Gibbs free energy change for bulk metal, is ascribed to the variation in their size. Also, the effect of nucleophiles in the electrolytic cell with metal nanoparticles (MNPs) is described. The nucleophile-guided reduction potential value is considered, which is applicable even for bulk noble metals. Typically, a low value (as low as E 0 = +0.40 V) causes the oxidation of metals at the O2 (air)/H2O interface. Under this condition, the oxidation of noble metal particles and dissolution of the noble metal in water are demonstrated. Thus, metal dissolution as a function of the size of metal nanoparticles becomes eventful and demonstrable with the addition of a surfactant to the solution. Interestingly, the reversal of the nobility of gold (Au) and silver (Ag) microelectrodes at the water/electrode interface is confirmed from the evolution of normal and inverted 'core-shell' structures, exploiting visible spectrophotometry and surface-enhanced Raman scattering (SERS) analysis. Subsequently, the effect of the size, shape, and facet- and support-selective catalysis of gold nanoparticles (NPs) and the effect of incident photons on current conversion without an applied potential are briefly discussed. Finally, the synergistic effect of the emissive behaviour of gold and silver clusters is productively exploited.
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Affiliation(s)
- Deblina Roy
- Department of Chemistry, National Institute of Technology Rourkela Odisha India
| | - Anjali Pal
- Department of Civil Engineering, Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Tarasankar Pal
- Department of Chemical Sciences, University of Johannesburg P. O. Box 524, Auckland Park 2006, Kingsway Campus South Africa
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Johnson HM, Dasher AM, Monahan M, Seifert S, Moreau LM. Mapping the effects of physical and chemical reduction parameters on local atomic distributions within bimetallic nanoparticles. NANOSCALE 2022; 14:4519-4530. [PMID: 35266465 DOI: 10.1039/d1nr06231j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Bimetallic nanoparticles prove advantageous over their monometallic counterparts due to the tunable, hybrid properties that result from combining different atomic species in a controlled way. The favorable optical and catalytic properties resulting from AgAu nanoparticle formation have been widely attributed to the existence of Ag-Au bonds, the maximization of which assumes the formation of a homogeneous alloy. Despite the importance of atomic scale structure in these systems, synthetic studies are typically not paired with structural characterization at the atomic scale. Herein, a comprehensive synthetic exploration of physical and chemical reduction parameters of resulting nanoparticle products is complemented with thorough X-ray characterization to probe how these parameters affect atomic scale alloy distributions within AgAu nanoparticles. Presented evidence shows Ag is substantially underincorporated into nanoparticle constructs compared with solution Ag : Au ratios regardless of precursor : reductant ratio or volume of reductant added. Both Ag and Au exhibit significant local clustering, with Ag distributed preferentially towards the nanoparticle surface. Most significantly, the results of this investigation suggest that reduction parameters alone can affect the local alloy distributions and homogeneity within bimetallic nanoparticles, even when the ratio of metallic precursors remains constant. Overall, this investigation presents the ability to control alloy distributions using kinetics and provides new considerations for optimizing synthetic methods to produce functional bimetallic nanoparticles.
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Affiliation(s)
- Hannah M Johnson
- Department of Chemistry, Washington State University, Pullman, WA 99164, USA.
| | - Acacia M Dasher
- Department of Chemistry, Washington State University, Pullman, WA 99164, USA.
| | - Madison Monahan
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Soenke Seifert
- X-ray Sciences Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Liane M Moreau
- Department of Chemistry, Washington State University, Pullman, WA 99164, USA.
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Johnston J, O'Rourke C, Andrews R, Mills A. A silver-based ink for assessing low activity photocatalytic films. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Malik AS, Liu T, Rittiruam M, Saelee T, Da Silva JLF, Praserthdam S, Praserthdam P. On a high photocatalytic activity of high-noble alloys Au-Ag/TiO 2 catalysts during oxygen evolution reaction of water oxidation. Sci Rep 2022; 12:2604. [PMID: 35173262 PMCID: PMC8850597 DOI: 10.1038/s41598-022-06608-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/31/2022] [Indexed: 11/29/2022] Open
Abstract
The analysis via density functional theory was employed to understand high photocatalytic activity found on the Au–Ag high-noble alloys catalysts supported on rutile TiO2 during the oxygen evolution of water oxidation reaction (OER). It was indicated that the most thermodynamically stable location of the Au–Ag bimetal-support interface is the bridging row oxygen vacancy site. On the active region of the Au–Ag catalyst, the Au site is the most active for OER catalyzing the reaction with an overpotential of 0.60 V. Whereas the photocatalytic activity of other active sites follows the trend of Au > Ag > Ti. This finding evident from the projected density of states revealed the formation of the trap state that reduces the band gap of the catalyst promoting activity. In addition, the Bader charge analysis revealed the electron relocation from Ag to Au to be the reason behind the activity of the bimetallic that exceeds its monometallic counterparts.
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Affiliation(s)
- Anum Shahid Malik
- High-Performance Computing Unit (CECC-HCU), Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Chulalongkorn University, Bangkok, 10330, Thailand.,Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Chulalongkorn University, Bangkok, 10330, Thailand
| | - Taifeng Liu
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng, 475004, China.
| | - Meena Rittiruam
- High-Performance Computing Unit (CECC-HCU), Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Chulalongkorn University, Bangkok, 10330, Thailand.,Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Chulalongkorn University, Bangkok, 10330, Thailand.,Rittiruam Research Group, Bangkok, 10330, Thailand
| | - Tinnakorn Saelee
- High-Performance Computing Unit (CECC-HCU), Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Chulalongkorn University, Bangkok, 10330, Thailand.,Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Chulalongkorn University, Bangkok, 10330, Thailand.,Saelee Research Group, Bangkok, 10330, Thailand
| | - Juarez L F Da Silva
- São Carlos Institute of Chemistry, University of São Paulo, PO Box 780, São Carlos, SP, 13560-970, Brazil
| | - Supareak Praserthdam
- High-Performance Computing Unit (CECC-HCU), Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Chulalongkorn University, Bangkok, 10330, Thailand. .,Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Piyasan Praserthdam
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Chulalongkorn University, Bangkok, 10330, Thailand
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NISHIJIMA Y. Development of Mid-infrared Plasmonics and Thier Sensor Applicatons. BUNSEKI KAGAKU 2022. [DOI: 10.2116/bunsekikagaku.71.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yoshiaki NISHIJIMA
- Department of Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University
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Lopes DS, Vono LLR, Miranda EV, Ando RA, Corio P. Inhibition of p‐nitrothiophenol catalytic hydrogenation on Ag‐containing AgAu/Pd/TiO2 plasmonic catalysts probed in situ by SERS. ChemCatChem 2022. [DOI: 10.1002/cctc.202101943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Douglas S. Lopes
- University of Sao Paulo: Universidade de Sao Paulo Chemistry Av. Prof. Lineu Prestes, 748 005508900 São Paulo BRAZIL
| | - Lucas L. R. Vono
- University of Sao Paulo: Universidade de Sao Paulo Chemistry BRAZIL
| | - Ester V. Miranda
- University of Sao Paulo: Universidade de Sao Paulo Chemistry BRAZIL
| | - Rômulo A. Ando
- University of Sao Paulo: Universidade de Sao Paulo Chemistry BRAZIL
| | - Paola Corio
- University of Sao Paulo Institute of Chemistry Av. Prof. Lineu Prestes, 748 05508000 Sao Paulo BRAZIL
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Stein F, Schielke A, Barcikowski S, Rehbock C. Influence of Gold/Silver Ratio in Ablative Nanoparticles on Their Interaction with Aptamers and Functionality of the Obtained Conjugates. Bioconjug Chem 2021; 32:2439-2446. [PMID: 34730343 DOI: 10.1021/acs.bioconjchem.1c00468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Nano-bio-conjugates, featuring noble metal gold-silver alloy nanoparticles, represent a versatile tool in diagnostics and therapeutics due to their plasmonic and antimicrobial properties tunable by the particle's gold molar fraction. However, little is known about how the binding of thiolated biomolecules to noble metal nanoparticles is influenced by the fraction of gold and silver atoms on the nanoparticle's surface and to which extend this would affect the functionality of the conjugated biomolecules. In this work, we generated gold-silver alloy nanoparticles with average diameters of 7-8 nm using the modern, surfactant-free laser ablation in liquids (LAL) synthesis approach. We conjugated them with thiolated miniStrep aptamer ligands at well-controlled aptamer-to-nanoparticle surface area ratios with maxima between 12 and 27 pmol aptamer/cm2 particle surface area. The results revealed a clear correlation between surface coverage and the nanoparticles' nominal gold/silver ratio, with maximum coverage reached for gold-rich alloys and a pronounced maximum for silver-rich alloys. However, the conjugates' functionality, evaluated by binding of streptavidin, was surprisingly robust and hardly affected by the nominal composition. However, 1.5 times higher surface coverage was needed to obtain maximum functionality in the silver-rich conjugates. Based on these results, it may be concluded that the nominal composition of gold-silver alloy nano-bioconjugates is freely tunable without a pronounced impact on the attached ligands' functionality, a finding highly relevant for the flexible design of nano-bio-conjugates for future biomedical applications. This study's results may facilitate the design of alloy nano-bio-conjugates for future applications in therapeutics and diagnostics.
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Affiliation(s)
- Frederic Stein
- Technical Chemistry I, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstr. 7, 45141 Essen, Germany
| | - Andreas Schielke
- Technical Chemistry I, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstr. 7, 45141 Essen, Germany
| | - Stephan Barcikowski
- Technical Chemistry I, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstr. 7, 45141 Essen, Germany
| | - Christoph Rehbock
- Technical Chemistry I, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstr. 7, 45141 Essen, Germany
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41
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Tanaka Y, Khoo EH, Salleh NABM, Teo SL, Ow SY, Sutarlie L, Su X. A portable SERS sensor for pyocyanin detection in simulated wound fluid and through swab sampling. Analyst 2021; 146:6924-6934. [PMID: 34647550 DOI: 10.1039/d1an01360b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A portable surface-enhanced Raman spectroscopy (SERS) sensor for detecting pyocyanin (PYO) in simulated wound fluid and from bacteria samples was developed. Solution-phase SERS detection protocols are designed to be compatible with two different clinical practices for wound exudate collection, namely negative pressure liquid collection and swabbing. For citrate-coated metal nanoparticles of three different compositions, i.e. gold (AuNPs), alloyed silver/gold (AgAuNPs), and silver (AgNPs), we firstly confirmed their interaction with PYO in the complex wound fluid, using fluorescence quenching experiments, which rationalized the Raman enhancement effects. We then demonstrated the Raman enhancement effects of the metal nanoparticles in the order of AgNPs > AgAuNPs > AuNPs. The limit of detection (LOD) achieved for PYO is 1.1 μM (in a linear range of 0.1-25 μM by the AgNPs), 10.9 μM (in a linear range of 5-100 μM, by the AgAuNPs), and 17.7 μM (in a linear range of 10-100 μM by the AuNPs). The AgNP and AgAuNP sensors together cover the sensitivity and dynamic range requirements for the clinical detection of wound infection, where PYO is present at a concentration of 1-50 μM. In addition, sterilized cotton swabs were used to collect wound fluid and transfer samples into AgNP solution for SERS measurements. This detection protocol was completed within 5 minutes with a LOD of 23.1 μM (in a linear range of 15-100 μM). The SERS sensing protocol was validated by its successful detection of PYO in cultured Pseudomonas aeruginosa bacteria. The findings presented in this work pave the way towards point-of-care diagnostics of wound infections.
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Affiliation(s)
- Yuki Tanaka
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634.
| | - Eng Huat Khoo
- Institute of High Performance Computing, Electronics and Photonics Department, 1 Fusionopolis Way, Connexis North, #16-16, Singapore 138632
| | - Nur Asinah Binte Mohamed Salleh
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634.
| | - Siew Lang Teo
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634.
| | - Sian Yang Ow
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634.
| | - Laura Sutarlie
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634.
| | - Xiaodi Su
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634. .,Department of Chemistry, National University of Singapore, Block S8, Level 3, 3 Science Drive 3, Singapore 117543.
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43
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Xiong Y, Chen H, Hu Y, Yang S, Xue X, He L, Liu X, Ma J, Jin Z. Photodriven Catalytic Hydrogenation of CO 2 to CH 4 with Nearly 100% Selectivity over Ag 25 Clusters. NANO LETTERS 2021; 21:8693-8700. [PMID: 34608804 DOI: 10.1021/acs.nanolett.1c02784] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The conversion of chemically inert carbon dioxide and its photoreduction to value-added products have attracted enormous attention as an intriguing prospect for utilizing the principal greenhouse gas CO2. Herein, we explore the use of Ag25 clusters with well-defined atomic structures for high-selectivity photocatalytic hydrogenation of CO2 to methane. Ag25 clusters, with molecular-like properties and surface plasmon resonance, exhibit competitive catalytic activity for light-driven CO2 reduction that yield an almost 100% product selectivity of methane at a relatively mild temperature (100 °C). DFT calculations reveal that the absorption of CO2 on Ag25 clusters is energetically favorable. The methanation of the Ag25 cluster catalyst has been investigated by operando infrared spectroscopy, verifying that methane was produced through a -H-assisted multielectron reaction pathway via the transformation of formyl and formaldehyde species to form surface CHx. This work presents a highly efficient strategy for high-performance CO2 methanation via well-defined metal cluster catalysts.
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Affiliation(s)
- Yan Xiong
- MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Hongwei Chen
- MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Yi Hu
- MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Songyuan Yang
- MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Xiaolan Xue
- MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Lingfeng He
- MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Xu Liu
- MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Jing Ma
- MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Zhong Jin
- MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
- Shenzhen Research Institute of Nanjing University, Shenzhen 518063, People's Republic of China
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Tuning the morphology of bimetallic gold-platinum nanorods in a microflow synthesis. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127085] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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45
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Sintering-Based In-Situ Synthesis and Characterization by TEM of Noble Metal Nanoparticles for Ceramic Glaze Color Control. NANOMATERIALS 2021; 11:nano11082103. [PMID: 34443933 PMCID: PMC8401758 DOI: 10.3390/nano11082103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/15/2021] [Accepted: 08/16/2021] [Indexed: 11/21/2022]
Abstract
Gold and silver salt mixtures are incorporated in ceramic glazes for in situ development of mixtures of gold and silver nanoparticles (NPs) that subsequently allow for a wide spectrum of low metal loading color control within ceramic materials. Prior work has shown that gold NPs can be used to create vibrant, color-rich red pigments in high-temperature ceramic and glass applications, though the achievable diameter of the gold NP ultimately limits the available range of color. The current study significantly expands color control from traditional gold nanoparticle red through silver nanoparticle green via the alteration of gold-to-silver salt ratios incorporated in the glaze formulations prior to sintering. Nanoparticle-based coloring systems are tested in both oxidative and reductive firing atmospheres. While the oxidation environment is found to be prohibitive for silver NP stability, the reductive atmosphere is able to form and sustain mixtures of gold and silver NPs across a wide color spectrum. All glazes are analyzed via reflectance spectrometry for color performance and samples are characterized via TEM and EDS for composition and sizing trends. This study creates new groundwork for a color-controlled NP system based on noble metal ratio blends that are both nontoxic and achieved with radically lower metal pigment loading than traditional glazes.
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Liu B, Januar M, Cheng JC, Hatanaka K, Misawa H, Liu KC. Feasibility of using bimetallic Au-Ag nanoparticles for organic light-emitting devices. NANOSCALE 2021; 13:12164-12176. [PMID: 34190277 DOI: 10.1039/d1nr00520k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Matching the resonant wavelength of plasmonic nanoparticles (NPs) and the emission band of organic materials is critical for achieving optimal plasmon-enhanced luminescence in organic light-emitting devices (OLEDs). However, the spectral matching is often unsatisfactory because the interior architecture of OLEDs limits the dimensions of the NPs to support the desired wavelength adjustment. In this article, we proposed a design strategy via AuxAg1-x alloy NPs to enable resonance tuning while preserving the size of the NP to suit the OLED design requirements. The bimetallic NPs, especially for x < 0.6, not only add one more degree of freedom to vary the plasmon wavelength but also provide the benefits of higher scattering and more intense and outspread electric fields over a broader spectrum compared to Au monometallic NPs. These features allow smaller NPs, which are more compatible with OLED interiors, to scatter electric fields more efficiently and increase the density of molecules interacting with the NP plasmons. In the presence of a nearby dipole emitter, the bimetallic NPs can simultaneously increase radiative enhancement and suppress non-radiative losses, which are advantageous for increasing the quantum yield and luminescence efficiency of the emitter. These improvements are associated with lower intraband and interband activities resulting from the higher molar fraction of Ag in the alloy NPs. We provided composition mappings to achieve enhanced luminescence for specified wavelengths at fixed NP sizes. Finally, we theoretically demonstrated that the bimetallic NPs could improve the light-extraction efficiency of OLEDs better than Au monometallic NPs. This work provides essential guidance to enable versatile plasmon-enhanced applications with predefined nanostructural geometries and wavelengths to match the device requirements.
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Affiliation(s)
- Bei Liu
- Department of Electronic Engineering, Chang Gung University, Taoyuan 33302, Taiwan.
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Liu Y, Mo F, Hu J, Jiang Q, Wang X, Zou Z, Zhang XZ, Pang DW, Liu X. Precision photothermal therapy and photoacoustic imaging by in situ activatable thermoplasmonics. Chem Sci 2021; 12:10097-10105. [PMID: 34349972 PMCID: PMC8317626 DOI: 10.1039/d1sc02203b] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/24/2021] [Indexed: 01/06/2023] Open
Abstract
Phototherapy holds great promise for disease treatment; however, traditional "always-on" photoagents have been restricted to clinical translation due to their nonspecific response and side effects on normal tissues. Here, we show a tumor microenvironment activated photothermal and photoacoustic agent as an activatable prodrug and probe that allows precise cancer diagnosis and treatment. Such an in situ revitalized therapeutic and contrast agent is achieved via controllable plasmonic heating for thermoplasmonic activation. This enables monitoring of signal molecule dynamics, real-time photothermal and photoacoustic imaging of tumors and lymph node metastasis, and targeted photothermal therapy without unwanted phototoxicity to normal tissues. Our study provides a practical solution to the non-specificity problem in phototherapy and offers precision cancer therapeutic and theranostic strategies. This work may advance the development of ultrasensitive disease diagnosis and precision medicine.
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Affiliation(s)
- Yahua Liu
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Fengye Mo
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Jialing Hu
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Qunying Jiang
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Xiuyuan Wang
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Zhiqiao Zou
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Xian-Zheng Zhang
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Dai-Wen Pang
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Xiaoqing Liu
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China
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A rational design of multimodal asymmetric nanoshells as efficient tunable absorbers within the biological optical window. Sci Rep 2021; 11:15115. [PMID: 34302000 PMCID: PMC8302719 DOI: 10.1038/s41598-021-94409-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 07/12/2021] [Indexed: 11/10/2022] Open
Abstract
In this work, the optical properties of asymmetric nanoshells with different geometries are comprehensively investigated in the quasi-static regime by applying the dipolar model and effective medium theory. The plasmonic behaviors of these nanostructures are explained by the plasmon hybridization model. Asymmetric hybrid nanoshells, composed of off-center core or nanorod core surrounded by a spherical metallic shell layer possess highly geometrically tunable optical resonances in the near-infrared regime. The plasmon modes of this nanostructures arise from the hybridization of the cavity and solid plasmon modes at the inner and outer surfaces of the shell. The results reveal that the symmetry breaking drastically affects the strength of hybridization between plasmon modes, which ultimately affects the absorption spectrum by altering the number of resonance modes, their wavelengths and absorption efficiencies. Therefore, offsetting the spherical core as well as changing the internal geometry of the nanoparticle to nanorod not only shift the resonance frequencies but can also strongly modify the relative magnitudes of the absorption efficiencies. Furthermore, higher order multipolar plasmon modes can appear in the spectrum of asymmetric nanoshell, especially in nanoegg configuration. The results also indicate that the strength of hybridization strongly depends on the metal of shell, material of core and the filling factor. Using Au-Ag alloy as a material of the shell can provide red-shifted narrow resonance peak in the near-infrared regime by combining the specific features of gold and silver. Moreover, inserting a high permittivity core in a nanoshell corresponds to a red-shift, while a core with small dielectric constant results in a blue-shift of spectrum. We envision that this research offers a novel perspective and provides a practical guideline in the fabrication of efficient tunable absorbers in the nanoscale regime.
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Singh R, Bhateria R. Core-shell nanostructures: a simplest two-component system with enhanced properties and multiple applications. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:2459-2482. [PMID: 33161517 DOI: 10.1007/s10653-020-00766-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 10/30/2020] [Indexed: 06/11/2023]
Abstract
With the pace of time, synthesis of nanomaterials has paved paths to blend two or more materials having different properties into hybrid nanoparticles. Therefore, it has become possible to combine two different functionalities in a single nanoparticle and their properties can be enhanced or modified by coupling of two different components. Core-shell technology has now represented a new trend in analytical sciences. Core-shell nanostructures are in demand due to their specific design and geometry. They have internal core of one component (metal or biomolecules) surrounded by a shell of another component. Core-shell nanoparticles have great importance due to their high thermal stability, high solubility and lower toxicity. In this review, recent progress in development of new and sophisticated core-shell nanostructures has been explored. The first section covers introduction throwing light on basics of core-shell nanoparticles. Following section classifies core-shell nanostructures into single core/shell, multicore/single shell, single core/multishell and multicore/multishell nanostructures. Next main section gives a brief description on types of core-shell nanomaterials followed by processes for the synthesis of core-shell nanostructures. Ultimately, the final section focuses on the application areas such as drug delivery, bioimaging, solar cell applications etc.
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Affiliation(s)
- Rimmy Singh
- Department of Environmental Sciences, MDU, Rohtak, India
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Ha Pham TT, Dien ND, Vu XH. Facile synthesis of silver/gold alloy nanoparticles for ultra-sensitive rhodamine B detection. RSC Adv 2021; 11:21475-21488. [PMID: 35478817 PMCID: PMC9034142 DOI: 10.1039/d1ra02576g] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 06/02/2021] [Indexed: 11/21/2022] Open
Abstract
The synthesis of Ag/Au nanoparticles (NPs) in a controlled manner has been a challenge for a long time. The aim of this report is to present a systematic study on the fabrication, characterization of Ag/Au alloy NP-based surface-enhanced Raman spectroscopy (SERS) substrates. Silver (Ag) and gold (Au) colloidal NPs were prepared by chemical reduction route of the corresponding metal salts by trisodium citrate (TSC). Ag/Au alloy nanoparticles with varying molar fractions are prepared in aqueous solution by the simultaneous reduction of AgNO3 and HAuCl4 by TSC. The composition of Ag and Au in the alloy samples was controlled by tuning the molar ratio of Ag+/Au3+ in the mixture solution. The morphologies of the different products were characterized by TEM, and the size of obtained samples was in the range of 40 to 60 nm. The resulting samples were denoted as AgNPs, AuNPs, Ag3Au, AgAu, and AgAu3 NPs. In order to compare the optical property of the Ag/Au alloy and Ag/Au mixture, we mixed the pure Ag and Au NPs with different ratios to obtain the aggregated nanoparticles. Ag/Au alloy NPs were demonstrated as an ultrasensitive SERS substrate for the detection of rhodamine B (RhB) molecules. The concentration of RhB ranged from 10-11 to 10-5 M. The effect of the Au content on the optical and SERS properties of the Ag/Au alloys was studied. The obtained results show that the Au content in the Ag/Au alloys play an important role in the physical properties of Ag/Au alloy NPs. The SERS spectra of RhB from the as-prepared Ag/Au alloy NP substrates indicated the superior enhancement with high reproducibility and sensitivity compared to those of Ag or Au samples. Interestingly, the highest SERS activity was achieved for the Ag3Au sample with an enhancement factor larger than 1010 for 10-11 M RhB and a limit of detection (LOD) at 10-11 M, as well as good long-term stability after storage for 1 year. As far as we know, this is the highest sensitivity record of RhB by SERS detection. Furthermore, the composition-dependent SERS activity was explained in detail. These advantages demonstrated the potential for growing Ag/Au alloy NP-based SERS substrates in food safety and bioanalysis.
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Affiliation(s)
- Thi Thu Ha Pham
- Faculty of Chemistry, TNU-University of Sciences Tan Thinh Ward Thai Nguyen City Vietnam
| | - Nguyen Dac Dien
- Faculty of Labour Protection, Vietnam Trade Union University 169 Tay Son, Dong Da District Hanoi City Vietnam
| | - Xuan Hoa Vu
- Faculty of Physics and Technology, TNU-University of Sciences Tan Thinh Ward Thai Nguyen City Vietnam
- Institute of Science and Technoloy, TNU-University of Sciences Tan Thinh Ward Thai Nguyen City Vietnam
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