1
|
Wu L, Wei S, Cheng X, He N, Kang X, Zhou H, Cai Y, Ye Y, Li P, Liang C. Release of ions enhanced the antibacterial performance of laser-generated, uncoated Ag nanoparticles. Colloids Surf B Biointerfaces 2024; 243:114131. [PMID: 39094211 DOI: 10.1016/j.colsurfb.2024.114131] [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: 04/14/2024] [Revised: 07/25/2024] [Accepted: 07/27/2024] [Indexed: 08/04/2024]
Abstract
Identifying the antibacterial mechanisms of elemental silver at the nanoscale remains a significant challenge due to the intertwining behaviors between the particles and their released ions. The open question is which of the above factor dominate the antibacterial behaviors when silver nanoparticles (Ag NPs) with different sizes. Considering the high reactivity of Ag NPs, prior research has primarily concentrated on coated particles, which inevitably hinder the release of Ag+ ions due to additional chemical agents. In this study, we synthesized various Ag NPs, both coated and uncoated, using the laser ablation in liquids (LAL) technique. By analyzing both the changes in particle size and Ag+ ions release, the impacts of various Ag NPs on the cellular activity and morphological changes of gram-negative (E. coil) and gram-positive (S. aureus) bacteria were evaluated. Our findings revealed that for uncoated Ag NPs, smaller particles exhibited greater ions release efficiency and enhanced antibacterial efficacy. Specifically, particles approximately 1.5 nm in size released up to 55 % of their Ag+ ions within 4 h, significantly inhibiting bacterial growth. Additionally, larger particles tended to aggregate on the bacterial cell membrane surface, whereas smaller particles were more likely to be internalized by the bacteria. Notably, treatment with smaller Ag NPs led to more pronounced bacterial morphological changes and elevated levels of intracellular reactive oxygen species (ROS). We proposed that the bactericidal activity of Ag NPs stems from the synergistic effect between particle-cell interaction and the ionic silver, which is dependent on the crucial parameter of particle size.
Collapse
Affiliation(s)
- Lingli Wu
- 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; University of Science and Technology of China, Hefei 230026, China; Lu'an Branch, Anhui Institute of Innovation for Industrial Technology, Lu'an 237100, 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; University of Science and Technology of China, Hefei 230026, China
| | - Xiaohu Cheng
- 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; University of Science and Technology of China, Hefei 230026, China
| | - 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; University of Science and Technology of China, Hefei 230026, China
| | - Xingyu Kang
- 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; University of Science and Technology of China, Hefei 230026, China
| | - Hongyu Zhou
- 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; University of Science and Technology of China, Hefei 230026, 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; Lu'an Branch, Anhui Institute of Innovation for Industrial Technology, Lu'an 237100, 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; Lu'an Branch, Anhui Institute of Innovation for Industrial Technology, Lu'an 237100, 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; Lu'an Branch, Anhui Institute of Innovation for Industrial Technology, Lu'an 237100, 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; University of Science and Technology of China, Hefei 230026, China; Lu'an Branch, Anhui Institute of Innovation for Industrial Technology, Lu'an 237100, China.
| |
Collapse
|
2
|
Petrikaitė V, Talaikis M, Mikoliūnaitė L, Gkouzi AM, Trusovas R, Skapas M, Niaura G, Stankevičius E. Stability and SERS signal strength of laser-generated gold, silver, and bimetallic nanoparticles at different KCl concentrations. Heliyon 2024; 10:e34815. [PMID: 39144937 PMCID: PMC11320324 DOI: 10.1016/j.heliyon.2024.e34815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 06/19/2024] [Accepted: 07/17/2024] [Indexed: 08/16/2024] Open
Abstract
Noble metal nanoparticles, specifically gold and silver, are extensively utilized in sensors, catalysts, surface-enhanced Raman scattering (SERS), and optical-electronic components due to their unique localized surface plasmon resonance (LSPR) properties. The production of these nanoparticles involves various methods, but among the environmentally friendly approaches, laser ablation stands out as it eliminates the need for toxic chemicals during purification. However, nanoparticle aggregation poses a challenge in laser ablation, necessitating the addition of extra materials that contaminate the otherwise clean process. In this study, we investigate the effectiveness of a biocompatible material, potassium chloride (KCl), in preventing particle aggregation. Although salt is known to trigger aggregation, we observed that certain concentrations of KCl can slow down this process. Over an eight-week period, we examined the aggregation rate, extinction behavior, and stability of gold, silver, and hybrid nanoparticles generated in different KCl concentrations. Extinction spectra, SEM images, SERS signal strength, and zeta potential were analyzed. Our results demonstrate that laser ablation in water and salt solutions yields nanoparticles with a spherical shape and a negative zeta potential. Importantly, we identified the optimal concentration of potassium chloride salt that maintains solution stability and SERS signal strength. Adsorbed chloride ions on silver nanoparticles were evidenced by low-frequency SERS band near 242 cm-1. A better understanding of the effect of KCl concentration on the properties of noble metal nanoparticles can lead to improved generation protocols and the development of tailored nanoparticle systems with enhanced stability and SERS activity.
Collapse
Affiliation(s)
- Vita Petrikaitė
- Department of Laser Technologies, Center for Physical Sciences and Technology (FTMC), Savanoriu 231, LT-02300, Vilnius, Lithuania
| | - Martynas Talaikis
- Department of Organic Chemistry, Center for Physical Sciences and Technology (FTMC), Sauletekio Ave. 3, LT-10257, Vilnius, Lithuania
| | - Lina Mikoliūnaitė
- Department of Organic Chemistry, Center for Physical Sciences and Technology (FTMC), Sauletekio Ave. 3, LT-10257, Vilnius, Lithuania
| | - Aikaterini-Maria Gkouzi
- Department of Organic Chemistry, Center for Physical Sciences and Technology (FTMC), Sauletekio Ave. 3, LT-10257, Vilnius, Lithuania
| | - Romualdas Trusovas
- Department of Laser Technologies, Center for Physical Sciences and Technology (FTMC), Savanoriu 231, LT-02300, Vilnius, Lithuania
| | - Martynas Skapas
- Department of Characterization of Materials Structure, Center for Physical Sciences and Technology, Sauletekio Ave. 3, LT-10257, Vilnius, Lithuania
| | - Gediminas Niaura
- Department of Organic Chemistry, Center for Physical Sciences and Technology (FTMC), Sauletekio Ave. 3, LT-10257, Vilnius, Lithuania
| | - Evaldas Stankevičius
- Department of Laser Technologies, Center for Physical Sciences and Technology (FTMC), Savanoriu 231, LT-02300, Vilnius, Lithuania
| |
Collapse
|
3
|
Fromme T, Reichenberger S, Tibbetts KM, Barcikowski S. Laser synthesis of nanoparticles in organic solvents - products, reactions, and perspectives. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2024; 15:638-663. [PMID: 38887526 PMCID: PMC11181208 DOI: 10.3762/bjnano.15.54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 04/30/2024] [Indexed: 06/20/2024]
Abstract
Laser synthesis and processing of colloids (LSPC) is an established method for producing functional and durable nanomaterials and catalysts in virtually any liquid of choice. While the redox reactions during laser synthesis in water are fairly well understood, the corresponding reactions in organic liquids remain elusive, particularly because of the much greater complexity of carbon chemistry. To this end, this article first reviews the knowledge base of chemical reactions during LSPC and then deduces identifiable reaction pathways and mechanisms. This review also includes findings that are specific to the LSPC method variants laser ablation (LAL), fragmentation (LFL), melting (LML), and reduction (LRL) in organic liquids. A particular focus will be set on permanent gases, liquid hydrocarbons, and solid, carbonaceous species generated, including the formation of doped, compounded, and encapsulated nanoparticles. It will be shown how the choice of solvent, synthesis method, and laser parameters influence the nanostructure formation as well as the amount and chain length of the generated polyyne by-products. Finally, theoretical approaches to address the mechanisms of organic liquid decomposition and carbon shell formation are highlighted and discussed regarding current challenges and future perspectives of LSPC using organic liquids instead of water.
Collapse
Affiliation(s)
- Theo Fromme
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Sven Reichenberger
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Katharine M Tibbetts
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284, USA
| | - Stephan Barcikowski
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| |
Collapse
|
4
|
Heine N, Doll-Nikutta K, Stein F, Jakobi J, Ingendoh-Tsakmakidis A, Rehbock C, Winkel A, Barcikowski S, Stiesch M. Anti-biofilm properties of laser-synthesized, ultrapure silver-gold-alloy nanoparticles against Staphylococcus aureus. Sci Rep 2024; 14:3405. [PMID: 38336925 PMCID: PMC10858226 DOI: 10.1038/s41598-024-53782-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 02/05/2024] [Indexed: 02/12/2024] Open
Abstract
Staphylococcus aureus biofilm-associated infections are a common complication in modern medicine. Due to inherent resilience of biofilms to antibiotics and the rising number of antibiotic-resistant bacterial strains, new treatment options are required. For this purpose, ultrapure, spherical silver-gold-alloy nanoparticles with homogenous elemental distribution were synthesized by laser ablation in liquids and analyzed for their antibacterial activity on different stages of S. aureus biofilm formation as well as for different viability parameters. First, the effect of nanoparticles against planktonic bacteria was tested with metabolic activity measurements. Next, nanoparticles were incubated with differently matured S. aureus biofilms, which were then analyzed by metabolic activity measurements and three dimensional live/dead fluorescent staining to determine biofilm volume and membrane integrity. It could be shown that AgAu NPs exhibit antibacterial properties against planktonic bacteria but also against early-stage and even mature biofilms, with a complete diffusion through the biofilm matrix. Furthermore, AgAu NPs primarily targeted metabolic activity, to a smaller extend membrane integrity, but not the biofilm volume. Additional molecular analyses using qRT-PCR confirmed the influence on different metabolic pathways, like glycolysis, stress response and biofilm formation. As this shows clear similarities to the mechanism of pure silver ions, the results strengthen silver ions to be the major antibacterial agent of the synthesized nanoparticles. In summary, the results of this study provide initial evidence of promising anti-biofilm characteristics of silver-gold-alloy nanoparticles and support the importance of further translation-oriented analyses in the future.
Collapse
Affiliation(s)
- Nils Heine
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.
- Lower Saxony Centre of Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany.
| | - Katharina Doll-Nikutta
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Lower Saxony Centre of Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Frederic Stein
- Technical Chemistry I, University of Duisburg Essen, Universitaetsstr. 7, 45141, Essen, Germany
| | - Jurij Jakobi
- Technical Chemistry I, University of Duisburg Essen, Universitaetsstr. 7, 45141, Essen, Germany
| | - Alexandra Ingendoh-Tsakmakidis
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Lower Saxony Centre of Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Christoph Rehbock
- Technical Chemistry I, University of Duisburg Essen, Universitaetsstr. 7, 45141, Essen, Germany
| | - Andreas Winkel
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Lower Saxony Centre of Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Stephan Barcikowski
- Technical Chemistry I, University of Duisburg Essen, Universitaetsstr. 7, 45141, Essen, Germany
| | - Meike Stiesch
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.
- Lower Saxony Centre of Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany.
| |
Collapse
|
5
|
Wei W. Hofmeister Effects Shine in Nanoscience. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302057. [PMID: 37211703 PMCID: PMC10401134 DOI: 10.1002/advs.202302057] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/11/2023] [Indexed: 05/23/2023]
Abstract
Hofmeister effects play a crucial role in nanoscience by affecting the physicochemical and biochemical processes. Thus far, numerous wonderful applications from various aspects of nanoscience have been developed based on the mechanism of Hofmeister effects, such as hydrogel/aerogel engineering, battery design, nanosynthesis, nanomotors, ion sensors, supramolecular chemistry, colloid and interface science, nanomedicine, and transport behaviors, etc. In this review, for the first time, the progress of applying Hofmeister effects is systematically introduced and summarized in nanoscience. It is aimed to provide a comprehensive guideline for future researchers to design more useful Hofmeister effects-based nanosystems.
Collapse
Affiliation(s)
- Weichen Wei
- Department of NanoengineeringUniversity of California San DiegoLa JollaSan DiegoCA92093USA
| |
Collapse
|
6
|
Li W, Gao N, Zhang W, Feng K, Zhou K, Zhao H, He G, Liu W, Li G. Visual demonstration and prediction of the Hofmeister series based on a poly(ionic liquid) photonic array. NANOSCALE 2023. [PMID: 37194393 DOI: 10.1039/d3nr01531a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The Hofmeister effect and associated Hofmeister series (HS) are ubiquitous in physicochemical phenomena and have demonstrated fundamental importance in a myriad of fields ranging from chemistry to biology. Visualization of the HS not only helps to straightforwardly understand the underpinning mechanism, but also enables the prediction of new ion positions in the HS and directs the applications of the Hofmeister effect. Owing to the difficulties of sensing and reporting complete multiple and subtle inter- and intramolecular interactions involved in the Hofmeister effect, facile and accurate visual demonstration and prediction of the HS remain highly challenging. Herein, a poly(ionic liquid) (PIL)-based photonic array containing 6 inverse opal microspheres was rationally constructed to efficiently sense and report the ion effects of the HS. The PILs can not only directly conjugate with HS ions due to their ion-exchange properties, but also provide sufficient noncovalent binding diversity with these ions. Meanwhile, subtle PIL-ion interactions can be sensitively amplified to optical signals owing to their photonic structures. Therefore, synergistic integration of PILs and photonic structures gives rise to accurate visualization of the ion effect of the HS, as demonstrated by correctly ranking 7 common anions. More importantly, assisted by principal component analysis (PCA), the developed PIL photonic array can serve as a general platform to facilely, accurately, and robustly predict the HS positions of an unprecedented amount of important and useful anions and cations. These findings indicate that the PIL photonic platform is very promising for addressing challenges in the visual demonstration and prediction of HS and promoting a molecular-level understanding of the Hoffmeister effect.
Collapse
Affiliation(s)
- Wenyun Li
- Department of Chemistry, Key Lab of Organic Optoelectronics & Molecular Engineering, Tsinghua University, Beijing 100084, P. R. China.
| | - Ning Gao
- Department of Chemistry, Key Lab of Organic Optoelectronics & Molecular Engineering, Tsinghua University, Beijing 100084, P. R. China.
| | - Wanlin Zhang
- Department of Chemistry, Key Lab of Organic Optoelectronics & Molecular Engineering, Tsinghua University, Beijing 100084, P. R. China.
| | - Kai Feng
- Department of Chemistry, Key Lab of Organic Optoelectronics & Molecular Engineering, Tsinghua University, Beijing 100084, P. R. China.
| | - Kang Zhou
- Department of Chemistry, Key Lab of Organic Optoelectronics & Molecular Engineering, Tsinghua University, Beijing 100084, P. R. China.
| | - Hongwei Zhao
- Department of Chemistry, Key Lab of Organic Optoelectronics & Molecular Engineering, Tsinghua University, Beijing 100084, P. R. China.
| | - Guokang He
- Department of Chemistry, Key Lab of Organic Optoelectronics & Molecular Engineering, Tsinghua University, Beijing 100084, P. R. China.
| | - Weigang Liu
- Department of Chemistry, Key Lab of Organic Optoelectronics & Molecular Engineering, Tsinghua University, Beijing 100084, P. R. China.
| | - Guangtao Li
- Department of Chemistry, Key Lab of Organic Optoelectronics & Molecular Engineering, Tsinghua University, Beijing 100084, P. R. China.
| |
Collapse
|
7
|
Petretto E, Campomanes P, Vanni S. Development of a coarse-grained model for surface-functionalized gold nanoparticles: towards an accurate description of their aggregation behavior. SOFT MATTER 2023; 19:3290-3300. [PMID: 37092690 PMCID: PMC10170483 DOI: 10.1039/d3sm00094j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Understanding the dispersion stability and aggregation propensity of self-assembled monolayer gold NPs at a molecular level is crucial to guide their rational design and to inform about the optimal surface functionalization for specific applications. To reach this goal, in silico modeling via coarse-grained (CG) molecular dynamics (MD) simulations is a fundamental tool to complement the information acquired from experimental studies since CG modeling allows to get a deep knowledge of the molecular interactions that take place at the nanoscale in this kind of systems. Unfortunately, current CG models of monolayer-protected AuNPs present several drawbacks that limit their accuracy in certain scenarios. We here develop a CG model that is fully compatible and extends the SPICA/SDK (Shinoda-DeVane-Klein) force field. Our model allows reproducing the behavior of AuNPs functionalized with hydrophobic as well as charged and more hydrophilic ligands. This model improves upon results obtained with previously derived CG force fields and successfully describes NPs aggregation and self-assembly in aqueous solution.
Collapse
Affiliation(s)
- Emanuele Petretto
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland.
| | - Pablo Campomanes
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland.
| | - Stefano Vanni
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland.
| |
Collapse
|
8
|
Quinson J. On the Importance of Fresh Stock Solutions for Surfactant-Free Colloidal Syntheses of Gold Nanoparticles in Alkaline Alcohol and Water Mixtures. INORGANICS 2023. [DOI: 10.3390/inorganics11040140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
A room temperature surfactant-free synthesis of gold nanoparticles in the size range 10–20 nm that only requires HAuCl4 as the precursor, NaOH as the base, water as the solvent and a mono-alcohol such as methanol or ethanol as the reducing agent, has recently been detailed. This approach is promisingly simple to obtain colloids stable for months. Here, it is shown that the use of fresh stock solutions of base is one key to ensure the formation of stable surfactant-free small-sized gold nanoparticles. The need for relatively freshly prepared stock solutions of base does not appear to be as crucial for syntheses using stabilizers and/or viscous solvents such as glycerol. The possibly overlooked importance of the age of the stock solution of base might account for the limited interest to date for the simple room temperature synthesis in low viscosity mono-alcohols highlighted.
Collapse
|
9
|
Quinson J, Aalling-Frederiksen O, Dacayan WL, Bjerregaard JD, Jensen KD, Jørgensen MRV, Kantor I, Sørensen DR, Theil Kuhn L, Johnson MS, Escudero-Escribano M, Simonsen SB, Jensen KMØ. Surfactant-Free Colloidal Syntheses of Gold-Based Nanomaterials in Alkaline Water and Mono-alcohol Mixtures. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2023; 35:2173-2190. [PMID: 36936178 PMCID: PMC10018736 DOI: 10.1021/acs.chemmater.3c00090] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Gold nanoparticles (Au NPs) and gold-based nanomaterials combine unique properties relevant for medicine, imaging, optics, sensing, catalysis, and energy conversion. While the Turkevich-Frens and Brust-Schiffrin methods remain the state-of-the-art colloidal syntheses of Au NPs, there is a need for more sustainable and tractable synthetic strategies leading to new model systems. In particular, stabilizers are almost systematically used in colloidal syntheses, but they can be detrimental for fundamental and applied studies. Here, a surfactant-free synthesis of size-controlled colloidal Au NPs stable for months is achieved by the simple reduction of HAuCl4 at room temperature in alkaline solutions of low-viscosity mono-alcohols such as ethanol or methanol and water, without the need for any other additives. Palladium (Pd) and bimetallic Au x Pd y NPs, nanocomposites and multimetallic samples, are also obtained and are readily active (electro)catalysts. The multiple benefits over the state-of-the-art syntheses that this simple synthesis bears for fundamental and applied research are highlighted.
Collapse
Affiliation(s)
- Jonathan Quinson
- Department
of Chemistry, Copenhagen University, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
- Biochemical
and Chemical Engineering Department, Aarhus
University, Åbogade 40, DK-8200 Aarhus, Denmark
| | | | - Waynah L. Dacayan
- Department
of Energy Conversion and Storage, Technical
University of Denmark, Fysikvej Building 310, DK-2800 Kgs. Lyngby, Denmark
| | - Joachim D. Bjerregaard
- Department
of Chemistry, Copenhagen University, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Kim D. Jensen
- Department
of Chemistry, Copenhagen University, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Mads R. V. Jørgensen
- Department
of Chemistry and iNANO, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
- MAX
IV Laboratory, Lund University, Fotongatan 2, SE-224 84 Lund, Sweden
| | - Innokenty Kantor
- MAX
IV Laboratory, Lund University, Fotongatan 2, SE-224 84 Lund, Sweden
- Department
of Physics, The Technical University of
Denmark, Fysikvej Building
311, DK-2800 Kgs.
Lyngby, Denmark
| | - Daniel R. Sørensen
- Department
of Chemistry and iNANO, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
- MAX
IV Laboratory, Lund University, Fotongatan 2, SE-224 84 Lund, Sweden
| | - Luise Theil Kuhn
- Department
of Energy Conversion and Storage, Technical
University of Denmark, Fysikvej Building 310, DK-2800 Kgs. Lyngby, Denmark
| | - Matthew S. Johnson
- Department
of Chemistry, Copenhagen University, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - María Escudero-Escribano
- Department
of Chemistry, Copenhagen University, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, UAB Campus, Bellaterra, 08193 Barcelona, Spain
- ICREA, Passeig de Lluís Companys,
23, 08010 Barcelona, Spain
| | - Søren B. Simonsen
- Department
of Energy Conversion and Storage, Technical
University of Denmark, Fysikvej Building 310, DK-2800 Kgs. Lyngby, Denmark
| | - Kirsten M. Ø. Jensen
- Department
of Chemistry, Copenhagen University, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| |
Collapse
|
10
|
Stein F, Kohsakowski S, Martinez-Hincapie R, Reichenberger S, Rehbock C, Colic V, Guay D, Barcikowski S. Disproportional surface segregation in ligand-free gold-silver alloy solid solution nanoparticles, and its implication for catalysis and biomedicine. Faraday Discuss 2023; 242:301-325. [PMID: 36222171 DOI: 10.1039/d2fd00092j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Catalytic activity and toxicity of mixed-metal nanoparticles have been shown to correlate and are known to be dependent on surface composition. The surface chemistry of the fully inorganic, ligand-free silver-gold alloy nanoparticle molar fraction series, is highly interesting for applications in heterogeneous catalysis, which is determined by active surface sites which are also relevant for understanding their dissolution behavior in biomedically-relevant ion-release scenarios. However, such information has never been systematically obtained for colloidal nanoparticles without organic surface ligands and has to date, not been analyzed in a surface-normalized manner to exclude density effects. For this, we used detailed electrochemical measurements based on cyclic voltammetry to systematically analyze the redox chemistry of particle-surface-normalized gold-silver alloy nanoparticles with varying gold molar fractions. The study addressed a broad range of gold molar fractions (Ag90Au10, Ag80Au20, Ag70Au30, Ag50Au50, Ag40Au60, and Ag20Au80) as well as monometallic Ag and Au nanoparticle controls. Oxygen reduction reaction (ORR) measurements in O2 saturated 0.1 M KOH revealed a linear reduction of the overpotential with increasing gold content on the surface, probably attributed to the higher ORR activity of gold over silver, verified by monometallic Ag and Au controls. These findings were complemented by detailed XPS studies revealing an accumulation of the minor constituent of the alloy on the surface, e.g., silver surface enrichment in gold-rich particles. Furthermore, highly oxidized Ag surface site enrichment was detected after the ORR reaction, most pronounced in gold-rich alloys. Further, detailed CV studies at acidic pH, analyzing the position, onset potential, and peak integrals of silver oxidation and silver reduction peaks revealed particularly low reactivity and high chemical stability of the equimolar Au50Ag50 composition, a phenomenon attributed to the outstanding thermodynamic, entropically driven, stabilization arising at this composition.
Collapse
Affiliation(s)
- Frederic Stein
- Technical Chemistry I, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-45141 Essen, Germany.
| | | | | | - Sven Reichenberger
- Technical Chemistry I, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-45141 Essen, Germany.
| | - Christoph Rehbock
- Technical Chemistry I, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-45141 Essen, Germany.
| | - Viktor Colic
- Max Planck Institute for Chemical Energy Conversion, D-45470 Mülheim an der Ruhr, Germany
| | - Daniel Guay
- Institut National de la Recherche Scientifique, INRS-Énergie, Matériaux et Télécommunications, Varennes, Québec, J3X 1P7, Canada
| | - Stephan Barcikowski
- Technical Chemistry I, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-45141 Essen, Germany.
| |
Collapse
|
11
|
Johny J, van Halteren CER, Zwiehoff S, Behrends C, Bäumer C, Timmermann B, Rehbock C, Barcikowski S. Impact of Sterilization on the Colloidal Stability of Ligand-Free Gold Nanoparticles for Biomedical Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13030-13047. [PMID: 36260482 DOI: 10.1021/acs.langmuir.2c01557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Sterilization is a major prerequisite for the utilization of nanoparticle colloids in biomedicine, a process well examined for particles derived from chemical synthesis although highly underexplored for electrostatically stabilized ligand-free gold nanoparticles (AuNPs). Hence, in this work, we comprehensively examined and compared the physicochemical characteristics of laser-generated ligand-free colloidal AuNPs exposed to steam sterilization and sterile filtration as a function of particle size and mass concentration and obtained physicochemical insight into particle growth processes. These particles exhibit long-term colloidal stability (up to 3 months) derived from electrostatic stabilization without using any ligands or surfactants. We show that particle growth attributed to cluster-based ripening occurs in smaller AuNPs (∼5 nm) following autoclaving, while larger particles (∼10 and ∼30 nm) remain stable. Sterile filtration, as an alternative effective sterilizing approach, has no substantial impact on the colloidal stability of AuNPs, regardless of particle size, although a mass loss of 5-10% is observed. Finally, we evaluated the impact of the sterilization procedures on potential particle functionality in proton therapy, using the formation of reactive oxygen species (ROS) as a readout. In particular, 5 nm AuNPs exhibit a significant loss in activity upon autoclaving, probably dedicated to specific surface area reduction and surface restructuring during particle growth. The filtered analog enhanced the ROS release by up to a factor of ∼2.0, at 30 ppm gold concentration. Our findings highlight the need for carefully adapting the sterilization procedure of ligand-free NPs to the desired biomedical application with special emphasis on particle size and concentration.
Collapse
Affiliation(s)
- Jacob Johny
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany
| | - Charlotte E R van Halteren
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany
| | - Sandra Zwiehoff
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany
| | - Carina Behrends
- West German Cancer Centre (WTZ), University Hospital Essen, 45147 Essen, Germany
- Department of Physics, TU Dortmund University, 44227 Dortmund, Germany
- West German Proton Therapy Centre Essen (WPE), 45147 Essen, Germany
| | - Christian Bäumer
- West German Cancer Centre (WTZ), University Hospital Essen, 45147 Essen, Germany
- Department of Physics, TU Dortmund University, 44227 Dortmund, Germany
- West German Proton Therapy Centre Essen (WPE), 45147 Essen, Germany
- German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
| | - Beate Timmermann
- West German Cancer Centre (WTZ), University Hospital Essen, 45147 Essen, Germany
- West German Proton Therapy Centre Essen (WPE), 45147 Essen, Germany
- German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
- Department of Particle Therapy, University Hospital Essen, 45147 Essen, Germany
- Faculty of Medicine, University Hospital Essen, 45147 Essen, Germany
| | - Christoph Rehbock
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany
| | - Stephan Barcikowski
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany
| |
Collapse
|
12
|
Petretto E, Ong QK, Olgiati F, Mao T, Campomanes P, Stellacci F, Vanni S. Monovalent ion-mediated charge-charge interactions drive aggregation of surface-functionalized gold nanoparticles. NANOSCALE 2022; 14:15181-15192. [PMID: 36214308 PMCID: PMC9585526 DOI: 10.1039/d2nr02824g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Monolayer-protected metal nanoparticles (NPs) are not only promising materials with a wide range of potential industrial and biological applications, but they are also a powerful tool to investigate the behaviour of matter at nanoscopic scales, including the stability of dispersions and colloidal systems. This stability is dependent on a delicate balance between attractive and repulsive interactions that occur in the solution, and it is described in quantitative terms by the classic Derjaguin-Landau-Vewey-Overbeek (DLVO) theory, that posits that aggregation between NPs is driven by van der Waals interactions and opposed by electrostatic interactions. To investigate the limits of this theory at the nanoscale, where the continuum assumptions required by the DLVO theory break down, here we investigate NP dimerization by computing the Potential of Mean Force (PMF) of this process using fully atomistic MD simulations. Serendipitously, we find that electrostatic interactions can lead to the formation of metastable NP dimers at physiological ion concentrations. These dimers are stabilized by complexes formed by negatively charged ligands belonging to distinct NPs that are bridged by positively charged monovalent ions present in solution. We validate our findings by collecting tomographic EM images of NPs in solution and by quantifying their radial distribution function, that shows a marked peak at interparticle distance comparable with that of MD simulations. Taken together, our results suggest that not only van der Waals interactions, but also electrostatic interactions mediated by monovalent ions at physiological concentrations, contribute to attraction between nano-sized charged objects at very short length scales.
Collapse
Affiliation(s)
- Emanuele Petretto
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland.
| | - Quy K Ong
- Institute of Materials, Ecole Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland
| | - Francesca Olgiati
- Institute of Materials, Ecole Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland
| | - Ting Mao
- Institute of Materials, Ecole Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland
| | - Pablo Campomanes
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland.
| | - Francesco Stellacci
- Institute of Materials, Ecole Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland
| | - Stefano Vanni
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland.
| |
Collapse
|
13
|
Kay KE, Batista LMF, Tibbetts KM, Ferri JK. Stability of Uncapped Gold Nanoparticles Produced Via Laser Synthesis. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
14
|
Wu D, Yao B, Wu S, Hingorani H, Cui Q, Hua M, Frenkel I, Du Y, Hsiai TK, He X. Room-Temperature Annealing-Free Gold Printing via Anion-Assisted Photochemical Deposition. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2201772. [PMID: 35703311 PMCID: PMC9884391 DOI: 10.1002/adma.202201772] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/11/2022] [Indexed: 05/30/2023]
Abstract
Metal patterning via additive manufacturing has been phasing-in to broad applications in many medical, electronics, aerospace, and automotive industries. While previous efforts have produced various promising metal-patterning strategies, their complexity and high cost have limited their practical application in rapid production and prototyping. Herein, a one-step gold printing technique based on anion-assisted photochemical deposition (APD), which can directly print highly conductive gold patterns (1.08 × 107 S m-1 ) under ambient conditions without post-annealing treatment, is introduced. Uniquely, the APD uses specific ion effects with projection lithography to pattern Au nanoparticles and simultaneously sinter them into tunable porous gold structures. The significant influence of kosmotropic or chaotropic anions in the precursor ink on tuning the morphologies and conductivities of the printed patterns by employing a series of different ions, including Cl- ions, in the printing process is presented. Additionally, the resistance stabilities and the electrochemical properties of the APD-printed gold patterns are carefully investigated. The high conductivity and excellent conformability of the printed Au electrodes are demonstrated with reliable performance in electrophysiological signal delivery and acquisition for biomedical applications. This work exploits the potential of photochemical-deposition-based metal patterning in flexible electronic manufacturing.
Collapse
Affiliation(s)
- Dong Wu
- Department of Materials Science and Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Bowen Yao
- Department of Materials Science and Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Shuwang Wu
- Department of Materials Science and Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Hardik Hingorani
- Department of Materials Science and Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Qingyu Cui
- Department of Bioengineering, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Mutian Hua
- Department of Materials Science and Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Imri Frenkel
- Department of Materials Science and Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Yingjie Du
- Department of Materials Science and Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Tzung K Hsiai
- Department of Bioengineering, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Ximin He
- Department of Materials Science and Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| |
Collapse
|
15
|
Distaso M, Lautenbach V, Uttinger MJ, Walter J, Lübbert C, Thajudeen T, Peukert W. A widely applicable method to stabilize nanoparticles comprising oxygen-rich functional groups. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
16
|
Tarasenka N, Kornev V, Ramanenka A, Li R, Tarasenko N. Photoluminescent neodymium-doped ZnO nanocrystals prepared by laser ablation in solution for NIR-II fluorescence bioimaging. Heliyon 2022; 8:e09554. [PMID: 35677401 PMCID: PMC9168051 DOI: 10.1016/j.heliyon.2022.e09554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/22/2022] [Accepted: 05/24/2022] [Indexed: 11/05/2022] Open
Abstract
The work reports on the use of laser ablation and post-ablation irradiation techniques for the preparation Nd3+ doped ZnO nanoparticles (NPs). The focus has been made on photoluminescence of Nd-doped ZnO NPs in the second near infrared (NIR-II) spectral window (1000-1700 nm) of the biological transparency. Morphology, phase composition and optical properties of the synthesized NPs were studied by absorption and photoluminescence spectroscopy, X-Ray diffraction (XRD) and transmission (TEM) electron microscopy. Near-infrared luminescence of Nd3+ doped ZnO nanocrystals in the region of 1000-1400 nm was detected both upon excitation from the ground state (800 nm) and upon UV excitation. The latter proves the incorporation of the Nd3+ into ZnO lattice as photoluminescence occurs through the transfer of excitation energy from the ZnO matrix to the Nd3+ ion. The possibility of control over the luminescence properties by a variation of solvent composition and by additional laser irradiation was demonstrated.
Collapse
Affiliation(s)
- Natalie Tarasenka
- B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, 220072, Belarus
| | - Vladislav Kornev
- B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, 220072, Belarus
| | - Andrei Ramanenka
- B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, 220072, Belarus
| | - Ruibin Li
- State Key Laboratory of Radiation Medicine and Protection, School for Radiation Medicine & Interdisciplinary Sciences, Soochow University Suzhou, Jiangsu, 215123, China
| | - Nikolai Tarasenko
- B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, 220072, Belarus
| |
Collapse
|
17
|
Bush SN, Ken JS, Martin CR. The Ionic Composition and Chemistry of Nanopore-Confined Solutions. ACS NANO 2022; 16:8338-8346. [PMID: 35486898 DOI: 10.1021/acsnano.2c02597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
There is increasing interest in understanding the properties of solutions confined within nanotubes and synthetic or biological nanopores. How the ionic content of a nanopore-confined solution differs from that of a contacting bulk salt solution is of particular importance, for example, to water desalinization, industrial electrolysis, and all living systems. This paper explores ionic content, ionic interactions, and ion-transport properties of solutions confined within the 10 nm diameter pores of a synthetic polymer membrane. The membrane has a fixed negative pore-wall and surface charge due to ionizable carbonate groups. As a result, under some conditions, the nanopore-confined solution contains only cations and no anions or salt present in a contacting solution, ideal cation permselectivity. This anion- and salt-rejecting ability varies greatly with the cation of the salt, a result that is in contradiction to the prevailing model for permselectivity in nanopores. The extant model fails because it does not account for specific chemical interactions between the cation and the carbonate groups. The nature of these ion-selective interactions is discussed here.
Collapse
Affiliation(s)
- Stevie N Bush
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Jay S Ken
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Charles R Martin
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| |
Collapse
|
18
|
Mohaček-Grošev V, Brljafa S, Škrabić M, Marić I, Blažek Bregović V, Amendola V, Ropret P, Kvaček Blažević A. Glucosamine to gold nanoparticles binding studied using Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 264:120326. [PMID: 34481250 DOI: 10.1016/j.saa.2021.120326] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 08/10/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
The binding of glucosamine to gold in water solutions of glucosamine hydrochloride mixed with clean colloidal gold nanoparticles obtained by laser ablation in liquid was studied using surface-enhanced Raman scattering (SERS), dynamic light scattering (DLS) and UV-VIS spectroscopy. The purpose of this study was to establish whether the binding of charged aminogroup to gold nanoparticles (AuNPs) is taking place, and if it does, how can it be identified by means of SERS. The average size of dried gold nanoparticles was (20 ± 4) nm determined by averaging the sizes observed in transmission electron microscopy micrographs, which is smaller than the average size of gold nanoparticles in water solution as determined by DLS: (52 ± 2) nm. Upon adding the glucosamine solutions to gold colloid, average hydrodynamic diameter of ions was slightly larger for 0.1 mM glucosamine solution (55 ± 2 nm), while it increased to (105 ± 22) nm in the case of 1 mM solution, and was (398 ± 54) nm when 10 mM glucosamine solution was added. Most prominent Raman bands observed both for 0.1 mM and 1 mM glucosamine solutions were located at 1165 cm-1, 1532 and 1586 cm-1 and assigned to C-N coupled with C-C stretching, and C-NH3+ deformation angles bending. In SERS spectrum of 1 mM GlcN+ solution, two strong bands at 999 and 1075 cm-1 were found and attributed to C-Oring stretching coupled with C-NH3+ bending (999 cm-1) and to dominantly C-O stretching vibration. The differences in SERS spectra are attributed to different number of glucosamine molecules that attach to gold nanoparticles and their orientation with respect to the metal particle surface, partly due to presence of beta anomers protonated at anomeric oxygen position. The assignment of glucosamine bands was further corroborated by comparison with vibrational spectra of alpha and beta glucose and of polycrystalline powder of glucosamine hydrochloride. For all three substances comprehensive calculation of vibrational density of states was conducted using density functional theory. Benchmark bands for polycrystalline glucose anomers distinction are 846 and 915 cm-1 for alpha glucose, and 902 cm-1 for beta glucose. However, the bands observed in SERS spectra of 0.1 mM glucosamine solution at 831, 899, and 946 cm-1 or in 1 mM solution at 934 cm-1 cannot be easily identified as belonging either to alpha or beta glucosamine anomer, due to complexity of atomic motions involved. The identification of vibrational bands associated with -CNH3+ group will aid SERS studies on amino acids, especially in cases when several atomic groups could possibly bind to AuNPs.
Collapse
Affiliation(s)
- Vlasta Mohaček-Grošev
- Center of Excellence for Advanced Materials and Sensing Devices, Research Unit New Functional Materials, Ruđer Bošković Institute, Bijeničkacesta 54, 10000 Zagreb, Croatia.
| | - Sandro Brljafa
- Osnovna škola Antuna Gustava Matoša, Albrechtova bb, 10000 Zagreb, Croatia
| | - Marko Škrabić
- Department of Physics and Biophysics, School of Medicine, University of Zagreb, Šalata 3b, 10000 Zagreb, Croatia
| | - Ivan Marić
- Radiation Chemistry and Dosimetry Laboratory, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Vesna Blažek Bregović
- Laboratory for Optics and Optical Thin Films, Division of Materials Physics, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Vincenzo Amendola
- Department of Chemical Sciences, University of Padova, Padova I -35131, Italy
| | - Polona Ropret
- Institute for the Protection of Cultural Heritage of Slovenia, Research Institute, Poljanska cesta 40, 1000 Ljubljana, Slovenia
| | - Anita Kvaček Blažević
- Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, Kneza Trpimira 2b, 31000 Osijek, Croatia
| |
Collapse
|
19
|
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: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [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.
Collapse
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
| |
Collapse
|
20
|
Harada M, Yamamoto M, Iwase H. Combined Small-Angle Neutron Scattering/Small-Angle X-ray Scattering Analysis for the Characterization of Silver Nanoparticles Prepared via Photoreduction in Water-in-Oil Microemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:13085-13098. [PMID: 34714093 DOI: 10.1021/acs.langmuir.1c02235] [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
In this study, we used small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS) to investigate the formation process of silver (Ag) nanoparticles (NPs) in water-in-oil (w/o) reverse microemulsions comprising sodium bis(2-ethylhexyl) sulfosuccinate (AOT), water, and organic solvents (such as benzene, octane, and decane) by the photoreduction of silver perchlorate (AgClO4). Combining SANS and SAXS, the structural changes in the w/o microemulsions before and after the formation of Ag NPs via photoreduction were quantitatively evaluated. From the SANS experiments performed using the contrast-variation method, the size of water cores containing Ag NPs and the thickness of the AOT shells were calculated using the core-shell hard-sphere model. The size of the Ag NPs and their aggregates was calculated via SAXS analysis based on the polydisperse sphere model with a Schulz-Zimm distribution. We found that aggregates of three or four primary Ag NPs are formed by, first, the aggregation of water droplets through the entanglement of the tails of the AOT shell, followed by the self-assembly of Ag NPs into their aggregates because of particle-particle attractive interactions.
Collapse
Affiliation(s)
- Masafumi Harada
- Department of Computer Science and Clothing Environment, Faculty of Human Life and Environment, Nara Women's University, Nara 630-8506, Japan
| | - Miho Yamamoto
- Department of Computer Science and Clothing Environment, Faculty of Human Life and Environment, Nara Women's University, Nara 630-8506, Japan
| | - Hiroki Iwase
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| |
Collapse
|
21
|
Li Z, Ruiz VG, Kanduč M, Dzubiella J. Highly Heterogeneous Polarization and Solvation of Gold Nanoparticles in Aqueous Electrolytes. ACS NANO 2021; 15:13155-13165. [PMID: 34370454 DOI: 10.1021/acsnano.1c02668] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The performance of gold nanoparticles (NPs) in applications depends critically on the structure of the NP-solvent interface, at which the electrostatic surface polarization is one of the key characteristics that affects hydration, ionic adsorption, and electrochemical reactions. Here, we demonstrate significant effects of explicit metal polarizability on the solvation and electrostatic properties of bare gold NPs in aqueous electrolyte solutions of sodium salts of various anions (Cl-, BF4-, PF6-, nitrophenolate, and 3- and 4-valent hexacyanoferrate), using classical molecular dynamics simulations with a polarizable core-shell model for the gold atoms. We find considerable spatial heterogeneity of the polarization and electrostatic potentials on the NP surface, mediated by a highly facet-dependent structuring of the interfacial water molecules. Moreover, ion-specific, facet-dependent ion adsorption leads to considerable alterations of the interfacial polarization. Compared to nonpolarizable NPs, surface polarization modifies water local dipole densities only slightly but has substantial effects on the electrostatic surface potentials and leads to significant lateral redistributions of ions on the NP surface. Besides, interfacial polarization effects cancel out in the far field for monovalent ions but not for polyvalent ions, as anticipated from continuum "image-charge" concepts. Far-field effective Debye-Hückel surface potentials change accordingly in a valence-specific fashion. Hence, the explicit charge response of metal NPs is crucial for the accurate description and interpretation of interfacial electrostatics (e.g., for charge transfer and interfacial polarization in catalysis and electrochemistry).
Collapse
Affiliation(s)
- Zhujie Li
- Applied Theoretical Physics-Computational Physics, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, D-79104 Freiburg, Germany
| | - Victor G Ruiz
- Research Group for Simulations of Energy Materials, Helmholtz-Zentrum Berlin, D-14109 Berlin, Germany
| | - Matej Kanduč
- Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia
| | - Joachim Dzubiella
- Applied Theoretical Physics-Computational Physics, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, D-79104 Freiburg, Germany
- Research Group for Simulations of Energy Materials, Helmholtz-Zentrum Berlin, D-14109 Berlin, Germany
| |
Collapse
|
22
|
Ziefuss AR, Steenbock T, Benner D, Plech A, Göttlicher J, Teubner M, Grimm‐Lebsanft B, Rehbock C, Comby‐Zerbino C, Antoine R, Amans D, Chakraborty I, Bester G, Nachev M, Sures B, Rübhausen M, Parak WJ, Barcikowski S. Photoluminescence of Fully Inorganic Colloidal Gold Nanocluster and Their Manipulation Using Surface Charge Effects. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2101549. [PMID: 34165866 PMCID: PMC11469328 DOI: 10.1002/adma.202101549] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/08/2021] [Indexed: 06/13/2023]
Abstract
Fully inorganic, colloidal gold nanoclusters (NCs) constitute a new class of nanomaterials that are clearly distinguishable from their commonly studied metal-organic ligand-capped counterparts. As their synthesis by chemical methods is challenging, details about their optical properties remain widely unknown. In this work, laser fragmentation in liquids is performed to produce fully inorganic and size-controlled colloidal gold NCs with monomodal particle size distributions and an fcc-like structure. Results reveal that these NCs exhibit highly pronounced photoluminescence with quantum yields of 2%. The emission behavior of small (2-2.5 nm) and ultrasmall (<1 nm) NCs is significantly different and dominated by either core- or surface-based emission states. It is further verified that emission intensities are a function of the surface charge density, which is easily controllable by the pH of the surrounding medium. This experimentally observed correlation between surface charge and photoluminescence emission intensity is confirmed by density functional theoretical simulations, demonstrating that fully inorganic NCs provide an appropriate material to bridge the gap between experimental and computational studies of NCs. The presented study deepens the understanding of electronic structures in fully inorganic colloidal gold NCs and how to systematically tune their optical properties via surface charge density and particle size.
Collapse
Affiliation(s)
- Anna R. Ziefuss
- Technical Chemistry I and Center for Nanointegration Duisburg‐Essen (CENIDE)University of Duisburg‐EssenUniversitätsstraße 1‐745141EssenGermany
| | - Torben Steenbock
- Department of ChemistryUniversität HamburgInstitute for Physical ChemistryLuruper Chaussee 149, HARBOR, Building 610D‐22761HamburgGermany
| | - Dominik Benner
- Department of ChemistryUniversität HamburgInstitute for Physical ChemistryLuruper Chaussee 149, HARBOR, Building 610D‐22761HamburgGermany
| | - Anton Plech
- Institute for Photon Science and Synchrotron RadiationKarlsruhe Institute of TechnologyHermann‐von‐Helmholtz‐Platz 176344Eggenstein‐LeopoldshafenGermany
| | - Jörg Göttlicher
- Institute for Photon Science and Synchrotron RadiationKarlsruhe Institute of TechnologyHermann‐von‐Helmholtz‐Platz 176344Eggenstein‐LeopoldshafenGermany
| | - Melissa Teubner
- Institut für Nanostruktur und FestkörperphysikCenter for Free Electron Laser Science (CFEL)Universität HamburgLuruper Chaussee 14922761HamburgGermany
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Benjamin Grimm‐Lebsanft
- Institut für Nanostruktur und FestkörperphysikCenter for Free Electron Laser Science (CFEL)Universität HamburgLuruper Chaussee 14922761HamburgGermany
| | - Christoph Rehbock
- Technical Chemistry I and Center for Nanointegration Duisburg‐Essen (CENIDE)University of Duisburg‐EssenUniversitätsstraße 1‐745141EssenGermany
| | - Clothilde Comby‐Zerbino
- Univ LyonUniversité Claude Bernard Lyon 1CNRSUMR5306Institut Lumière MatièreVilleurbanneF‐69100France
| | - Rodolphe Antoine
- Univ LyonUniversité Claude Bernard Lyon 1CNRSUMR5306Institut Lumière MatièreVilleurbanneF‐69100France
| | - David Amans
- Univ LyonUniversité Claude Bernard Lyon 1CNRSUMR5306Institut Lumière MatièreVilleurbanneF‐69100France
| | - Indranath Chakraborty
- Department of Physics and Center for Hybrid Nanostructure (CHyN)Universität HamburgLuruper Chaussee 14922761HamburgGermany
| | - Gabriel Bester
- Department of ChemistryUniversität HamburgInstitute for Physical ChemistryLuruper Chaussee 149, HARBOR, Building 610D‐22761HamburgGermany
- Department of PhysicsUniversität HamburgInstitut für Nanostruktur und FestkörperphysikLuruper Chausee 149, HARBOR22761HamburgGermany
| | - Milen Nachev
- Department of Aquatic Ecology and Centre for Water and Environmental ResearchUniversity of Duisburg‐EssenUniversitätsstraße 545141EssenGermany
| | - Bernd Sures
- Department of Aquatic Ecology and Centre for Water and Environmental ResearchUniversity of Duisburg‐EssenUniversitätsstraße 545141EssenGermany
| | - Michael Rübhausen
- Institut für Nanostruktur und FestkörperphysikCenter for Free Electron Laser Science (CFEL)Universität HamburgLuruper Chaussee 14922761HamburgGermany
| | - Wolfgang J. Parak
- Department of Physics and Center for Hybrid Nanostructure (CHyN)Universität HamburgLuruper Chaussee 14922761HamburgGermany
- Department of ChemistryUniversität HamburgGrindelallee 11720146HamburgGermany
| | - Stephan Barcikowski
- Technical Chemistry I and Center for Nanointegration Duisburg‐Essen (CENIDE)University of Duisburg‐EssenUniversitätsstraße 1‐745141EssenGermany
| |
Collapse
|
23
|
Liang SX, Zhang LC, Reichenberger S, Barcikowski S. Design and perspective of amorphous metal nanoparticles from laser synthesis and processing. Phys Chem Chem Phys 2021; 23:11121-11154. [PMID: 33969854 DOI: 10.1039/d1cp00701g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Amorphous metal nanoparticles (A-NPs) have aroused great interest in their structural disordering nature and combined downsizing strategies (e.g. nanoscaling), both of which are beneficial for highly strengthened properties compared to their crystalline counterparts. Conventional synthesis strategies easily induce product contamination and/or size limitations, which largely narrow their applications. In recent years, laser ablation in liquid (LAL) and laser fragmentation in liquid (LFL) as "green" and scalable colloid synthesis methodologies have attracted extensive enthusiasm in the production of ultrapure crystalline NPs, while they also show promising potential for the production of A-NPs. Yet, the amorphization in such methods still lacks sufficient rules to follow regarding the formation mechanism and criteria. To that end, this article reviews amorphous metal oxide and carbide NPs from LAL and LFL in terms of NP types, liquid selection, target elements, laser parameters, and possible formation mechanism, all of which play a significant role in the competitive relationship between amorphization and crystallization. Furthermore, we provide the prospect of laser-generated metallic glass nanoparticles (MG-NPs) from MG targets. The current and potential applications of A-NPs are also discussed, categorized by the attractive application fields e.g. in catalysis and magnetism. The present work aims to give possible selection rules and perspective on the design of colloidal A-NPs as well as the synthesis criteria of MG-NPs from laser-based strategies.
Collapse
Affiliation(s)
- Shun-Xing Liang
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstrasse 7, Essen 45141, Germany.
| | - Lai-Chang Zhang
- School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, Perth, WA 6027, Australia
| | - Sven Reichenberger
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstrasse 7, Essen 45141, Germany.
| | - Stephan Barcikowski
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstrasse 7, Essen 45141, Germany.
| |
Collapse
|
24
|
Lévy A, De Anda Villa M, Laurens G, Blanchet V, Bozek J, Gaudin J, Lamour E, Macé S, Mignon P, Milosavljević AR, Nicolas C, Patanen M, Prigent C, Robert E, Steydli S, Trassinelli M, Vernhet D, Veteläinen O, Amans D. Surface Chemistry of Gold Nanoparticles Produced by Laser Ablation in Pure and Saline Water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:5783-5794. [PMID: 33939435 DOI: 10.1021/acs.langmuir.1c00092] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Pulsed laser ablation in liquid (PLAL) is a powerful method for producing nanoparticle colloids with a long-term stability despite the absence of stabilizing organic agents. The colloid stability involves different reactivities and chemical equilibria with complex ionic-specific effects at the nanoparticle/solvent interface which must be strongly influenced by their chemical composition. In this work, the surface composition of PLAL-produced gold nanoparticles in alkaline and saline (NaBr) water is investigated by X-ray photoelectron spectroscopy on free-flying nanoparticles, exempt from any substrate or radiation damage artifact. The Au 4f photoelectron spectra with a depth profiling investigation are used to evaluate the degree of nanoparticle surface oxidation. In alkaline water, the results preclude any surface oxidation contrary to the case of nanoparticles produced in NaBr solution. In addition, the analysis of Br 3d core-level photoelectron spectra agrees with a clear signature of Br on the nanoparticle surface, which is confirmed by a specific valence band feature. This experimental study is supported by DFT calculations, evaluating the energy balance of halide adsorption on different configurations of gold surfaces including oxidation or adsorbed salts.
Collapse
Affiliation(s)
- Anna Lévy
- Institut des Nanosciences de Paris, Sorbonne Université, Campus Pierre et Marie Curie, CNRS UMR7588, 75005 Paris, France
| | - Manuel De Anda Villa
- Institut des Nanosciences de Paris, Sorbonne Université, Campus Pierre et Marie Curie, CNRS UMR7588, 75005 Paris, France
| | - Gaétan Laurens
- Université Claude Bernard Lyon 1, UMR5306 CNRS, Institut Lumière Matière, University of Lyon, F-69622 Villeurbanne, France
| | - Valérie Blanchet
- CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), University of Bordeaux, UMR5107, F-33405 Talence, France
| | - John Bozek
- L'Orme des Merisiers, Synchrotron SOLEIL, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - Jérôme Gaudin
- CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), University of Bordeaux, UMR5107, F-33405 Talence, France
| | - Emily Lamour
- Institut des Nanosciences de Paris, Sorbonne Université, Campus Pierre et Marie Curie, CNRS UMR7588, 75005 Paris, France
| | - Stéphane Macé
- Institut des Nanosciences de Paris, Sorbonne Université, Campus Pierre et Marie Curie, CNRS UMR7588, 75005 Paris, France
| | - Pierre Mignon
- Université Claude Bernard Lyon 1, UMR5306 CNRS, Institut Lumière Matière, University of Lyon, F-69622 Villeurbanne, France
| | | | - Christophe Nicolas
- L'Orme des Merisiers, Synchrotron SOLEIL, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - Minna Patanen
- Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, P.O. Box 3000, FI-90014 Oulu, Finland
| | - Christophe Prigent
- Institut des Nanosciences de Paris, Sorbonne Université, Campus Pierre et Marie Curie, CNRS UMR7588, 75005 Paris, France
| | - Emmanuel Robert
- L'Orme des Merisiers, Synchrotron SOLEIL, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - Sébastien Steydli
- Institut des Nanosciences de Paris, Sorbonne Université, Campus Pierre et Marie Curie, CNRS UMR7588, 75005 Paris, France
| | - Martino Trassinelli
- Institut des Nanosciences de Paris, Sorbonne Université, Campus Pierre et Marie Curie, CNRS UMR7588, 75005 Paris, France
| | - Dominique Vernhet
- Institut des Nanosciences de Paris, Sorbonne Université, Campus Pierre et Marie Curie, CNRS UMR7588, 75005 Paris, France
| | - Onni Veteläinen
- Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, P.O. Box 3000, FI-90014 Oulu, Finland
| | - David Amans
- Université Claude Bernard Lyon 1, UMR5306 CNRS, Institut Lumière Matière, University of Lyon, F-69622 Villeurbanne, France
| |
Collapse
|
25
|
Zhang Z, Tompsett GA, Granados-Focil S, Lambert CR, Timko MT. Rational design of solid-acid catalysts for cellulose hydrolysis using colloidal theory. Phys Chem Chem Phys 2021; 23:10236-10243. [PMID: 33884399 DOI: 10.1039/d1cp00198a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Solid-acid catalysts functionalized with catalytic groups have attracted intense interest for converting cellulose into soluble products. However, design of solid-7 acid catalysts has been guided by molecular level interactions and the actual mechanism of cellulose-solid-acid catalyst particles adsorption remains unknown. Here, colloidal stability theory, DLVO, is used to rationalize the design of solid acids for targeted cellulose adsorption. In nearly all cases, an energy barrier, arising from electrostatic repulsion and much larger than the energy associated with thermal fluctuations, prevents close contact between the solid acid and cellulose. Polymer-based solid-acid substrates such as polystyrene and Nafion are especially ineffective as their interaction with cellulose is dominated by the repulsive electrostatic force. Carbon and metal oxides have potential to be effective for cellulose-solid-acid interaction as their attractive van der Waals interaction can offset the repulsive electrostatic interaction. The effects of reactor temperature and shear force were evaluated, with the finding that reactor temperature can minimize the catalyst-cellulose interaction barrier, promoting coagulation, but that the shear force in a typical laboratory reactor cannot. We have evaluated strategies for enhancing cellulose-catalyst interaction and conclude that raising reaction temperature or synthesizing acid/base bifunctional catalysts can effectively diminish electrostatic repulsion and promote cellulose-catalyst coagulation. The analysis presented here establishes a rational method for designing solid acid catalysts for cellulose hydrolysis.
Collapse
Affiliation(s)
- Ziyang Zhang
- Department of Chemical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA.
| | - Geoffrey A Tompsett
- Department of Chemical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA.
| | | | - Christopher R Lambert
- Department of Chemistry & Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA.
| | - Michael T Timko
- Department of Chemical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA.
| |
Collapse
|
26
|
Labusch M, Puthenkalam S, Cleve E, Barcikowski S, Reichenberger S. Pore penetration of porous catalyst supports by in-situ-adsorbed, agglomeration-quenched nanoparticles from pulsed laser ablation in supercritical CO2. J Supercrit Fluids 2021. [DOI: 10.1016/j.supflu.2020.105100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
27
|
Li Z, Ruiz VG, Kanduč M, Dzubiella J. Ion-Specific Adsorption on Bare Gold (Au) Nanoparticles in Aqueous Solutions: Double-Layer Structure and Surface Potentials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13457-13468. [PMID: 33140973 DOI: 10.1021/acs.langmuir.0c02097] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We study the solvation and electrostatic properties of bare gold (Au) nanoparticles (NPs) of 1-2 nm in size in aqueous electrolyte solutions of sodium salts of various anions with large physicochemical diversity (Cl-, BF4-, PF6-, Nip- (nitrophenolate), 3- and 4-valent hexacyanoferrate (HCF)) using nonpolarizable, classical molecular dynamics computer simulations. We find a substantial facet selectivity in the adsorption structure and spatial distribution of the ions at the AuNPs: while sodium and some of the anions (e.g., Cl-, HCF3-) adsorb more at the "edgy" (100) and (110) facets of the NPs, where the water hydration structure is more disordered, other ions (e.g., BF4-, PF6-, Nip-) prefer to adsorb strongly on the extended and rather flat (111) facets. In particular, Nip-, which features an aromatic ring in its chemical structure, adsorbs strongly and perturbs the first water monolayer structure on the NP (111) facets substantially. Moreover, we calculate adsorptions, radially resolved electrostatic potentials as well as the far-field effective electrostatic surface charges and potentials by mapping the long-range decay of the calculated electrostatic potential distribution onto the standard Debye-Hückel form. We show how the extrapolation of these values to other ionic strengths can be performed by an analytical Adsorption-Grahame relation between the effective surface charge and potential. We find for all salts negative effective surface potentials in the range from -10 mV for NaCl down to about -80 mV for NaNip, consistent with typical experimental ranges for the zeta potential. We discuss how these values depend on the surface definition and compare them to the explicitly calculated electrostatic potentials near the NP surface, which are highly oscillatory in the ±0.5 V range.
Collapse
Affiliation(s)
- Zhujie Li
- Applied Theoretical Physics-Computational Physics, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg D-79104, Germany
| | - Victor G Ruiz
- Research Group for Simulations of Energy Materials, Helmholtz-Zentrum Berlin, Berlin D-14109, Germany
| | - Matej Kanduč
- Jožef Stefan Institute, Ljubljana SI-1000, Slovenia
| | - Joachim Dzubiella
- Applied Theoretical Physics-Computational Physics, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg D-79104, Germany
- Research Group for Simulations of Energy Materials, Helmholtz-Zentrum Berlin, Berlin D-14109, Germany
| |
Collapse
|
28
|
Katana B, Takács D, Csapó E, Szabó T, Jamnik A, Szilagyi I. Ion Specific Effects on the Stability of Halloysite Nanotube Colloids-Inorganic Salts versus Ionic Liquids. J Phys Chem B 2020; 124:9757-9765. [PMID: 33076658 PMCID: PMC7660744 DOI: 10.1021/acs.jpcb.0c07885] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/09/2020] [Indexed: 11/30/2022]
Abstract
Charging and aggregation processes were studied in aqueous dispersions of halloysite nanotubes (HNTs) in the presence of monovalent inorganic electrolytes and ionic liquid (IL) constituents. The same type of co-ion (same sign of charge as HNT) was used in all systems, while the type of counterions (opposite sign of charge as HNT) was systematically varied. The affinity of the inorganic cations to the HNT surface influenced their destabilizing power leading to an increase in the critical coagulation concentration (CCC) of HNT dispersions in the Cs+ < K+ < Na+ order. This trend agrees with the classical Hofmeister series for negatively charged hydrophobic surfaces. For the IL cations, the CCCs increased in the order BMPY+ < BMPIP+ < BMPYR+ < BMIM+. An unexpectedly strong adsorption of BMPY+ cations on the HNT surface was observed giving rise to charge neutralization and reversal of the oppositely charged outer surface of HNT. The direct Hofmeister series was extended with these IL cations. The main aggregation mechanism was rationalized within the classical theory developed by Derjaguin, Landau, Verwey, and Overbeek, while ion specific effects resulted in remarkable variation in the CCC values. The results unambiguously proved that the hydration level of the surface and the counterions plays a crucial role in the formation of the ionic composition at the solid-liquid interface and consequently, in the colloidal stability of the HNT particles in both inorganic salt and IL solutions.
Collapse
Affiliation(s)
- Bojana Katana
- MTA-SZTE
Lendület Biocolloids Research Group and Interdisciplinary Excellence Center,
Department of Physical Chemistry and Materials Science, University of Szeged, H-6720 Szeged, Hungary
| | - Dóra Takács
- MTA-SZTE
Lendület Biocolloids Research Group and Interdisciplinary Excellence Center,
Department of Physical Chemistry and Materials Science, University of Szeged, H-6720 Szeged, Hungary
| | - Edit Csapó
- MTA-SZTE
Lendület Biocolloids Research Group and Interdisciplinary Excellence Center,
Department of Physical Chemistry and Materials Science, University of Szeged, H-6720 Szeged, Hungary
| | - Tamás Szabó
- MTA-SZTE
Lendület Biocolloids Research Group and Interdisciplinary Excellence Center,
Department of Physical Chemistry and Materials Science, University of Szeged, H-6720 Szeged, Hungary
| | - Andrej Jamnik
- Faculty
of Chemistry and Chemical Technology, University
of Ljubljana, SI-1000 Ljubljana, Slovenia
| | - Istvan Szilagyi
- MTA-SZTE
Lendület Biocolloids Research Group and Interdisciplinary Excellence Center,
Department of Physical Chemistry and Materials Science, University of Szeged, H-6720 Szeged, Hungary
| |
Collapse
|
29
|
Effect of the Surface Chemical Composition and of Added Metal Cation Concentration on the Stability of Metal Nanoparticles Synthesized by Pulsed Laser Ablation in Water. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10124169] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Metal nanoparticles (NPs) made of gold, silver, and platinum have been synthesized by means of pulsed laser ablation in liquid aqueous solution. Independently from the metal nature, all NPs have an average diameter of 10 ± 5 nm. The ζ-potential values are: −62 ± 7 mV for gold, −44 ± 2 mV for silver and −58 ± 3 for platinum. XPS analysis demonstrates the absence of metal oxides in the case of gold and silver NPs. In the case of platinum NPs, 22% of the particle surface is ascribed to platinum oxidized species. This points to a marginal role of the metal oxides in building the negative charge that stabilizes these colloidal suspensions. The investigation of the colloidal stability of gold NPs in the presence of metal cations shows these NPs can be destabilized by trace amounts of selected metal ions. The case of Ag+ is paradigmatic since it is able to reduce the NP ζ-potential and to induce coagulation at concentrations as low as 3 μM, while in the case of K+ the critical coagulation concentration is around 8 mM. It is proposed that such a huge difference in destabilization power between monovalent cations can be accounted for by the difference in the reduction potential.
Collapse
|
30
|
Yu W, Du N, Gu Y, Yan J, Hou W. Specific Ion Effects on the Colloidal Stability of Layered Double Hydroxide Single-layer Nanosheets. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:6557-6568. [PMID: 32466650 DOI: 10.1021/acs.langmuir.0c01089] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The surface charge properties and aggregation behavior of positively charged Mg-Al-NO3 layered double hydroxide (LDH) single-layer nanosheets dispersed in water were investigated in the presence of K+ salts with different mono-, di-, and trivalent anions, using electrophoresis and dynamic light scattering techniques. An increase in the salt concentration can significantly decrease the effective surface charge density (σeff) of LDHs, leading to the aggregation of nanosheets. The critical coagulation concentration (CCC) or ionic strength (CCIS) of salts for nanosheets significantly decreases with an increase in the valence of anions. Specific ion effects, with a partially reverse Hofmeister series, are observed. On the basis of the Stern model and the DLVO theory, the relationship of CCC with σeff and the ionic valences of salts (zi) is theoretically analyzed, which can accurately describe the dependence of CCC on the σeff and zi but cannot explain the origin of specific ion effects. To explore the origin of specific ion effects, a correlation between CCIS and the specific adsorption energy (Esc) of anions within the Stern layer is developed. Especially, an empirical relationship of Esc with the characteristic physical parameters of anions is proposed. Our model can accurately predict the CCISs of at least monovalent anions and divalent anions (CO32- and SO42-), demonstrating that the specific ion effects observed can be attributed to the differences in ionic size, polarizability, and hydration free energy (or the formation capacity of anion-cation pairs) of different anions. This work not only deepens the understanding of specific ion effects on the colloidal stability but also provides useful information for the potential applications of LDH single-layer nanosheets.
Collapse
Affiliation(s)
- Weiyan Yu
- Key Laboratory of Colloid and Interface Chemistry (Ministry of Education), Shandong University, Jinan 250100, P.R. China
| | - Na Du
- Key Laboratory of Colloid and Interface Chemistry (Ministry of Education), Shandong University, Jinan 250100, P.R. China
| | - Yongtao Gu
- Gudong Petroleum Production Factory, Shengli Oilfield of Sinopec, Dongying 257237, P.R. China
| | - Jingen Yan
- Gudong Petroleum Production Factory, Shengli Oilfield of Sinopec, Dongying 257237, P.R. China
| | - Wanguo Hou
- Key Laboratory of Colloid and Interface Chemistry (Ministry of Education), Shandong University, Jinan 250100, P.R. China
| |
Collapse
|
31
|
Wang C, Chen S, Chen Y, Zi F, Hu X, Qin X, Zhang Y, Yang P, He Y, He P, Lin Y, Zhang G. Modification of activated carbon by chemical vapour deposition through thermal decomposition of thiourea for enhanced adsorption of gold thiosulfate complex. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116632] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
32
|
Hupfeld T, Stein F, Barcikowski S, Gökce B, Wiedwald U. Manipulation of the Size and Phase Composition of Yttrium Iron Garnet Nanoparticles by Pulsed Laser Post-Processing in Liquid. Molecules 2020; 25:E1869. [PMID: 32316700 PMCID: PMC7221795 DOI: 10.3390/molecules25081869] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/10/2020] [Accepted: 04/10/2020] [Indexed: 01/19/2023] Open
Abstract
Modification of the size and phase composition of magnetic oxide nanomaterials dispersed in liquids by laser synthesis and processing of colloids has high implications for applications in biomedicine, catalysis and for nanoparticle-polymer composites. Controlling these properties for ternary oxides, however, is challenging with typical additives like salts and ligands and can lead to unwanted byproducts and various phases. In our study, we demonstrate how additive-free pulsed laser post-processing (LPP) of colloidal yttrium iron oxide nanoparticles using high repetition rates and power at 355 nm laser wavelength can be used for phase transformation and phase purification of the garnet structure by variation of the laser fluence as well as the applied energy dose. Furthermore, LPP allows particle size modification between 5 nm (ps laser) and 20 nm (ns laser) and significant increase of the monodispersity. Resulting colloidal nanoparticles are investigated regarding their size, structure and temperature-dependent magnetic properties.
Collapse
Affiliation(s)
- Tim Hupfeld
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstrasse 7, 45141 Essen, Germany; (T.H.); (F.S.); (S.B.)
| | - Frederic Stein
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstrasse 7, 45141 Essen, Germany; (T.H.); (F.S.); (S.B.)
| | - Stephan Barcikowski
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstrasse 7, 45141 Essen, Germany; (T.H.); (F.S.); (S.B.)
| | - Bilal Gökce
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstrasse 7, 45141 Essen, Germany; (T.H.); (F.S.); (S.B.)
| | - Ulf Wiedwald
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstr. 1, 47057 Duisburg, Germany
| |
Collapse
|
33
|
Kohsakowski S, Seiser F, Wiederrecht JP, Reichenberger S, Vinnay T, Barcikowski S, Marzun G. Effective size separation of laser-generated, surfactant-free nanoparticles by continuous centrifugation. NANOTECHNOLOGY 2020; 31:095603. [PMID: 31703230 DOI: 10.1088/1361-6528/ab55bd] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
High-power, nanosecond, pulsed-laser ablation in liquids enables the continuous synthesis of highly pure colloidal nanoparticles (NPs) at an application-relevant scale. The gained mass-weighted particle size distribution is however often reported to be broad, requiring post treatment like centrifugation to remove undesired particle size fractions. To date, available centrifugation techniques are generally discontinuous, limiting the throughput and hindering economic upscaling. Hence, throughout this paper, a scalable, continuously operating centrifugation of laser-generated platinum NPs in a tubular bowl centrifuge is reported for the first time. To that end, using a 121 W ns-laser, the continuous production of a colloidal suspension of NPs, yet with broad particle size distribution has been employed, yielding productivities of 1-2 g h-1 for gold, silver, and platinum. The power-specific productivities (Au: 18 mg h-1 W-1, Pt: 13 mg h-1 W-1, Ag: 8 mg h-1 W-1, Ni: 6 mg h-1 W-1) are far higher than reported before. Subsequent downstream integration of a continuously operating tubular bowl centrifuge was successfully achieved for Pt NPs allowing the removal of undesired particle size with high throughput. By means of a systematic study of relevant centrifugation parameters involved, effective size optimization and respective size sharpness parameters for a maximum Pt NP diameter of 10 nm are reported. The results of the experimental centrifugation of laser-generated Pt NPs were in excellent agreement with the theoretically calculated cut-off diameter. After centrifugation with optimized parameters (residence time of 5 min; g-force of 38,454 g), the polydispersity indices of the Pt NPs size distributions were reduced by a factor of six, and high monodispersity was observed.
Collapse
Affiliation(s)
- Sebastian Kohsakowski
- University of Duisburg-Essen, Technical Chemistry I and Center of Nanointegration Duisburg-Essen (CENIDE), Universitätsstraße 7, Essen, North Rhine-Westphalia, 45141, Germany. Nano Energie Technik Zentrum (NETZ), Carl-Benz-Straße 199, Duisburg, North Rhine-Westphalia, 47057, Germany
| | | | | | | | | | | | | |
Collapse
|
34
|
Fan X, Zerebecki S, Du R, Hübner R, Marzum G, Jiang G, Hu Y, Barcikowki S, Reichenberger S, Eychmüller A. Promoting the Electrocatalytic Performance of Noble Metal Aerogels by Ligand‐Directed Modulation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913079] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Xuelin Fan
- Physical Chemistry Technische Universität Dresden Bergstr. 66b 01069 Dresden Germany
| | - Swen Zerebecki
- Technical Chemistry and Center for Nanointegration Duisburg-Essen University of Duisburg-Essen 47057 Duisburg Germany
| | - Ran Du
- Physical Chemistry Technische Universität Dresden Bergstr. 66b 01069 Dresden Germany
| | - René Hübner
- Helmholtz-Zentrum Dresden-Rossendorf Institute of Ion Beam Physics and Materials Research Bautzner Landstrasse 400 01328 Dresden Germany
| | - Galina Marzum
- Technical Chemistry and Center for Nanointegration Duisburg-Essen University of Duisburg-Essen 47057 Duisburg Germany
| | - Guocan Jiang
- Physical Chemistry Technische Universität Dresden Bergstr. 66b 01069 Dresden Germany
| | - Yue Hu
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325000 China
| | - Stephan Barcikowki
- Technical Chemistry and Center for Nanointegration Duisburg-Essen University of Duisburg-Essen 47057 Duisburg Germany
| | - Sven Reichenberger
- Technical Chemistry and Center for Nanointegration Duisburg-Essen University of Duisburg-Essen 47057 Duisburg Germany
| | - Alexander Eychmüller
- Physical Chemistry Technische Universität Dresden Bergstr. 66b 01069 Dresden Germany
| |
Collapse
|
35
|
Fan X, Zerebecki S, Du R, Hübner R, Marzum G, Jiang G, Hu Y, Barcikowki S, Reichenberger S, Eychmüller A. Promoting the Electrocatalytic Performance of Noble Metal Aerogels by Ligand-Directed Modulation. Angew Chem Int Ed Engl 2020; 59:5706-5711. [PMID: 31990450 PMCID: PMC7154742 DOI: 10.1002/anie.201913079] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Indexed: 12/11/2022]
Abstract
Noble metal aerogels (NMAs) are an emerging class of porous materials. Embracing nano-sized highly-active noble metals and porous structures, they display unprecedented performance in diverse electrocatalytic processes. However, various impurities, particularly organic ligands, are often involved in the synthesis and remain in the corresponding products, hindering the investigation of the intrinsic electrocatalytic properties of NMAs. Here, starting from laser-generated inorganic-salt-stabilized metal nanoparticles, various impurity-free NMAs (Au, Pd, and Au-Pd aerogels) were fabricated. In this light, we demonstrate not only the intrinsic electrocatalytic properties of NMAs, but also the prominent roles played by ligands in tuning electrocatalysis through modulating the electron density of catalysts. These findings may offer a new dimension to engineer and optimize the electrocatalytic performance for various NMAs and beyond.
Collapse
Affiliation(s)
- Xuelin Fan
- Physical Chemistry, Technische Universität Dresden, Bergstr. 66b, 01069, Dresden, Germany
| | - Swen Zerebecki
- Technical Chemistry and Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, 47057, Duisburg, Germany
| | - Ran Du
- Physical Chemistry, Technische Universität Dresden, Bergstr. 66b, 01069, Dresden, Germany
| | - René Hübner
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328, Dresden, Germany
| | - Galina Marzum
- Technical Chemistry and Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, 47057, Duisburg, Germany
| | - Guocan Jiang
- Physical Chemistry, Technische Universität Dresden, Bergstr. 66b, 01069, Dresden, Germany
| | - Yue Hu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325000, China
| | - Stephan Barcikowki
- Technical Chemistry and Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, 47057, Duisburg, Germany
| | - Sven Reichenberger
- Technical Chemistry and Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, 47057, Duisburg, Germany
| | - Alexander Eychmüller
- Physical Chemistry, Technische Universität Dresden, Bergstr. 66b, 01069, Dresden, Germany
| |
Collapse
|
36
|
Wang H, Zhou X, Huang Y, Chen X, Jin C. Interactions of sub-five-nanometer diameter colloidal palladium nanoparticles in solution investigated via liquid cell transmission electron microscopy. RSC Adv 2020; 10:34781-34787. [PMID: 35514409 PMCID: PMC9056814 DOI: 10.1039/d0ra05759b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 09/14/2020] [Indexed: 11/21/2022] Open
Abstract
Inter-particle interactions play important roles in controlling the structures, dispersion state and chemo-physical properties of colloidal nanoparticles (NPs) in liquid media. In this work, we prepared palladium (Pd) NPs with an average diameter of ∼4.6 nm in situ inside the liquid cell, and investigated their coupled diffusion and aggregation behaviors through liquid cell transmission electron microscopy (LCTEM). Via analyzing the interaction energies and forces, we derived the effective working range for repulsive double layer interaction experimentally, a value larger than two times the Debye length, suggesting a different interaction behavior of sub-5 nm NPs from that of colloidal NPs in larger sizes. Our results provide insights for the interactions between colloidal ultrafine nanoparticles in solution and will also shed light on the precisely controlled assembly of colloidal nanocrystals for practical applications. In this paper, sub-5 nm diameter palladium nanoparticles were prepared in situ inside the liquid cell, and the interactions between them were investigated via liquid cell transmission electron microscopy.![]()
Collapse
Affiliation(s)
- Haifeng Wang
- Institute of New Energy for Vehicles
- School of Materials Science and Engineering
- Tongji University
- Shanghai 201804
- China
| | - Xiaoqin Zhou
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- China
| | - Yunhui Huang
- Institute of New Energy for Vehicles
- School of Materials Science and Engineering
- Tongji University
- Shanghai 201804
- China
| | - Xin Chen
- Key Laboratory for Ultrafine Materials of Ministry of Education
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Chuanhong Jin
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- China
| |
Collapse
|
37
|
Kanitz A, Kalus MR, Gurevich EL, Ostendorf A, Barcikowski S, Amans D. Review on experimental and theoretical investigations of the early stage, femtoseconds to microseconds processes during laser ablation in liquid-phase for the synthesis of colloidal nanoparticles. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1361-6595/ab3dbe] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
38
|
De Anda Villa M, Gaudin J, Amans D, Boudjada F, Bozek J, Evaristo Grisenti R, Lamour E, Laurens G, Macé S, Nicolas C, Papagiannouli I, Patanen M, Prigent C, Robert E, Steydli S, Trassinelli M, Vernhet D, Lévy A. Assessing the Surface Oxidation State of Free-Standing Gold Nanoparticles Produced by Laser Ablation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:11859-11871. [PMID: 31453695 DOI: 10.1021/acs.langmuir.9b02159] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The surface chemistry of gold nanoparticles produced by the pulsed laser ablation in liquids method is investigated by X-ray photoelectron spectroscopy (XPS). The presence of surface oxide expected on these systems is investigated using synchrotron radiation in conditions close to their original state in solvent but free from substrate or solvent effects which could affect the interpretation of spectroscopic observations. For that purpose we performed the experiment on a controlled free-standing nanoparticle beam produced by combination of an atomizer and an aerodynamic lens system. These results are compared with those obtained by the standard situation of deposited nanoparticles on silicon substrate. An accurate analysis based on Bayesian statistics concludes that the existence of oxide in the free-standing conditions cannot be solely confirmed by the recorded core-level 4f spectra. If present, our data indicate an upper limit of 2.15 ± 0.68% of oxide. However, a higher credence to the hypothesis of its existence is brought by the structureless valence profile of the free-standing beam. Moreover, the cross-comparison with the deposited nanoparticles case clearly evidences an important misleading substrate effect. Experiment with free-standing nanoparticles is then demonstrated to be the right way to further investigate oxidation states on Au nanoparticles.
Collapse
Affiliation(s)
- Manuel De Anda Villa
- Institut des Nanosciences de Paris , Sorbonne Université-Pierre et Marie Curie , CNRS UMR7588 , 75005 Paris , France
| | - Jérôme Gaudin
- CNRS, CEA, CELIA (Centre Lasers Intenses et Applications) , Univeristy of Bordeaux , UMR5107 , F-33405 Talence , France
| | - David Amans
- Université Claude Bernard Lyon 1, UMR5306 CNRS, Institut Lumière Matière , Univeristy of Lyon , F-69622 Villeurbanne , France
| | - Fahima Boudjada
- Université Claude Bernard Lyon 1, UMR5306 CNRS, Institut Lumière Matière , Univeristy of Lyon , F-69622 Villeurbanne , France
| | - John Bozek
- L'Orme des Merisiers , Synchrotron SOLEIL , Saint-Aubin, BP 48 , F-91192 Gif-sur-Yvette Cedex , France
| | - Robert Evaristo Grisenti
- GSI Helmholtzzentrum für Schwerionenforschung GmbH , Planckstrasse 1 , 64291 Darmstadt , Germany
- Institut für Kernphysik , J. W. Goethe-Universität , Max-von-Laue-strasse 1 , 60438 Frankfurt am Main , Germany
| | - Emily Lamour
- Institut des Nanosciences de Paris , Sorbonne Université-Pierre et Marie Curie , CNRS UMR7588 , 75005 Paris , France
| | - Gaétan Laurens
- Université Claude Bernard Lyon 1, UMR5306 CNRS, Institut Lumière Matière , Univeristy of Lyon , F-69622 Villeurbanne , France
| | - Stéphane Macé
- Institut des Nanosciences de Paris , Sorbonne Université-Pierre et Marie Curie , CNRS UMR7588 , 75005 Paris , France
| | - Christophe Nicolas
- L'Orme des Merisiers , Synchrotron SOLEIL , Saint-Aubin, BP 48 , F-91192 Gif-sur-Yvette Cedex , France
| | - Irene Papagiannouli
- CNRS, CEA, CELIA (Centre Lasers Intenses et Applications) , Univeristy of Bordeaux , UMR5107 , F-33405 Talence , France
| | - Minna Patanen
- Nano and Molecular Systems Research Unit, Faculty of Science , University of Oulu , P.O. Box 3000, FI-90014 Oulu , Finland
| | - Christophe Prigent
- Institut des Nanosciences de Paris , Sorbonne Université-Pierre et Marie Curie , CNRS UMR7588 , 75005 Paris , France
| | - Emmanuel Robert
- L'Orme des Merisiers , Synchrotron SOLEIL , Saint-Aubin, BP 48 , F-91192 Gif-sur-Yvette Cedex , France
| | - Sébastien Steydli
- Institut des Nanosciences de Paris , Sorbonne Université-Pierre et Marie Curie , CNRS UMR7588 , 75005 Paris , France
| | - Martino Trassinelli
- Institut des Nanosciences de Paris , Sorbonne Université-Pierre et Marie Curie , CNRS UMR7588 , 75005 Paris , France
| | - Dominique Vernhet
- Institut des Nanosciences de Paris , Sorbonne Université-Pierre et Marie Curie , CNRS UMR7588 , 75005 Paris , France
| | - Anna Lévy
- Institut des Nanosciences de Paris , Sorbonne Université-Pierre et Marie Curie , CNRS UMR7588 , 75005 Paris , France
| |
Collapse
|
39
|
Reichenberger S, Marzun G, Muhler M, Barcikowski S. Perspective of Surfactant‐Free Colloidal Nanoparticles in Heterogeneous Catalysis. ChemCatChem 2019. [DOI: 10.1002/cctc.201900666] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sven Reichenberger
- University of Duisburg-EssenTechnical Chemistry I Universitätsstrasse 7 Essen 45141 Germany
| | - Galina Marzun
- University of Duisburg-EssenTechnical Chemistry I Universitätsstrasse 7 Essen 45141 Germany
| | - Martin Muhler
- Ruhr-University BochumDepartment for Technical Chemistry Universitätsstraße 150 Bochum 44801 Germany
| | - Stephan Barcikowski
- University of Duisburg-EssenTechnical Chemistry I Universitätsstrasse 7 Essen 45141 Germany
| |
Collapse
|
40
|
The Hofmeister series: Specific ion effects in aqueous polymer solutions. J Colloid Interface Sci 2019; 555:615-635. [PMID: 31408761 DOI: 10.1016/j.jcis.2019.07.067] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 07/23/2019] [Accepted: 07/24/2019] [Indexed: 12/21/2022]
Abstract
Specific ion effects in aqueous polymer solutions have been under active investigation over the past few decades. The current state-of-the-art research is primarily focused on the understanding of the mechanisms through which ions interact with macromolecules and affect their solution stability. Hence, we herein first present the current opinion on the sources of ion-specific effects and review the relevant studies. This includes a summary of the molecular mechanisms through which ions can interact with polymers, quantification of the affinity of ions for the polymer surface, a thermodynamic description of the effects of salts on polymer stability, as well as a discussion on the different forces that contribute to ion-polymer interplay. Finally, we also highlight future research issues that call for further scrutiny. These include fundamental questions on the mechanisms of ion-specific effects and their correlation with polymer properties as well as a discussion on the specific ion effects in more complex systems such as mixed electrolyte solutions.
Collapse
|
41
|
Ziefuß AR, Barcikowski S, Rehbock C. Synergism between Specific Halide Anions and pH Effects during Nanosecond Laser Fragmentation of Ligand-Free Gold Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:6630-6639. [PMID: 31025868 DOI: 10.1021/acs.langmuir.9b00418] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Gold nanoclusters (AuNCs) with diameters smaller than 3 nm are an emerging field of research because they possess interesting optical properties, such as photoluminescence. However, to date, it is still difficult to distinguish whether these properties originate from the cores of the nanoparticles or from the adsorbates on their surfaces. Hence, there is a high demand for ligand-free, ultra-small particles because they make it possible to study ligand and core effects separately. Pulsed laser fragmentation in liquids (LFL) is a convenient route for the synthesis of ligand-free AuNCs. The influence of physical parameters, such as melting and evaporation, on the LFL process is well understood both theoretically and experimentally. However, the impact of the chemical composition of the medium during LFL, which critically affects the particle formation process, has been less well examined. Therefore, in this work, we elucidate the extent to which the ionic strength, the pH value, and the nature of the halide anion that is present, that is, F-, Cl-, Br-, or I-, influence the particle size distribution of the LFL product and the mean yield of small particles (<3 nm) of the product. We showed that the yield of small particles can be enhanced by the synergism between pH and specific ion effects, which probably is attributable to the adsorption of specific anions. In addition, our findings indicated that anion-based stabilization depends critically on the type of anion. A direct Hofmeister effect was observed for anions in the neutral pH regime, whereas an indirect Hofmeister series was reported in alkaline solution, which probably was due to the more hydrophilic surfaces of the AuNCs that were formed.
Collapse
Affiliation(s)
- Anna Rosa Ziefuß
- University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE) , Essen 45145 , Germany
| | - Stephan Barcikowski
- University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE) , Essen 45145 , Germany
| | - Christoph Rehbock
- University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE) , Essen 45145 , Germany
| |
Collapse
|
42
|
Trompette JL, Lahitte JF. Influence of the Counterion Nature on the Stability Sequence of Hydrophobic Latex Particles. J Phys Chem B 2019; 123:3859-3865. [PMID: 30950614 DOI: 10.1021/acs.jpcb.9b01226] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The aggregation kinetics of negatively charged polystyrene latex particles in the presence of monovalent electrolytes have been investigated. The inferred coagulation critical concentrations were compared to establish the stability sequence. With the same representative co-ions, this sequence is reversed when using kosmotrope sodium and chaotrope potassium cations. The results have been ascribed to a variable competition of the co-ions toward the hydrophobic surface depending on the lyotropic nature of the associated counterion. They provide new insights into the implication of ionic specificity in the stability behavior of aqueous dispersions of charged colloids.
Collapse
Affiliation(s)
- Jean-Luc Trompette
- Laboratoire de Génie Chimique UMR 5503 , Université de Toulouse, CNRS , 4 Allée Emile Monso , 31432 Toulouse Cedex 4 , France
| | - Jean-François Lahitte
- Laboratoire de Génie Chimique UMR 5503 , Université de Toulouse, CNRS , 4 Allée Emile Monso , 31432 Toulouse Cedex 4 , France
| |
Collapse
|
43
|
Parveen R, Ullah S, Sgarbi R, Tremiliosi-Filho G. One-pot ligand-free synthesis of gold nanoparticles: The role of glycerol as reducing-cum-stabilizing agent. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.01.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
44
|
Letzel A, Reich S, Dos Santos Rolo T, Kanitz A, Hoppius J, Rack A, Olbinado MP, Ostendorf A, Gökce B, Plech A, Barcikowski S. Time and Mechanism of Nanoparticle Functionalization by Macromolecular Ligands during Pulsed Laser Ablation in Liquids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:3038-3047. [PMID: 30646687 DOI: 10.1021/acs.langmuir.8b01585] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Laser ablation of gold in liquids with nanosecond laser pulses in aqueous solutions of inorganic electrolytes and macromolecular ligands for gold nanoparticle size quenching is probed inside the laser-induced cavitation bubble by in situ X-ray multicontrast imaging with a Hartmann mask (XHI). It is found that (i) the in situ size quenching power of sodium chloride (NaCl) in comparison to the ablation in pure water can be observed by the scattering contrast from XHI already inside the cavitation bubble, while (ii) for polyvinylpyrrolidone (PVP) as a macromolecular model ligand an in situ size quenching cannot be observed. Complementary ex situ characterization confirms the overall size quenching ability of both additive types NaCl and PVP. The macromolecular ligand as well as its monomer N-vinylpyrrolidone (NVP) are mainly effective for growth quenching of larger nanoparticles on later time scales, leading to the conclusion of an alternative interaction mechanism with ablated nanoparticles compared to the electrolyte NaCl, probably outside of the cavitation bubble, in the surrounding liquid phase. While monomer and polymer have similar effects on the particle properties, with the polymer being slightly more efficient, only the polymer is effective against hydrodynamic aggregation.
Collapse
Affiliation(s)
- Alexander Letzel
- Department of Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE) , University of Duisburg-Essen , Universitätsstraße 7 , 45141 Essen , Germany
| | - Stefan Reich
- Institute for Photon Science and Synchrotron Radiation , Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1 , 76344 Eggenstein-Leopoldshafen , Germany
| | - Tomy Dos Santos Rolo
- Institute for Photon Science and Synchrotron Radiation , Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1 , 76344 Eggenstein-Leopoldshafen , Germany
- Department of Electrical and Electronic Engineering , Southern University of Science and Technology , 518055 Shenzen , China
| | - Alexander Kanitz
- Applied Laser Technologies , Ruhr-University Bochum , Universitätsstraße 150 , 44801 Bochum , Germany
| | - Jan Hoppius
- Applied Laser Technologies , Ruhr-University Bochum , Universitätsstraße 150 , 44801 Bochum , Germany
| | - Alexander Rack
- ESRF - The European Synchrotron Radiation Facility , 30843 Grenoble , France
| | - Margie P Olbinado
- ESRF - The European Synchrotron Radiation Facility , 30843 Grenoble , France
| | - Andreas Ostendorf
- Applied Laser Technologies , Ruhr-University Bochum , Universitätsstraße 150 , 44801 Bochum , Germany
| | - Bilal Gökce
- Department of Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE) , University of Duisburg-Essen , Universitätsstraße 7 , 45141 Essen , Germany
| | - Anton Plech
- Institute for Photon Science and Synchrotron Radiation , Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1 , 76344 Eggenstein-Leopoldshafen , Germany
| | - Stephan Barcikowski
- Department of Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE) , University of Duisburg-Essen , Universitätsstraße 7 , 45141 Essen , Germany
| |
Collapse
|
45
|
Mostowtt T, Munoz J, McCord B. An evaluation of monovalent, divalent, and trivalent cations as aggregating agents for surface enhanced Raman spectroscopy (SERS) analysis of synthetic cannabinoids. Analyst 2019; 144:6404-6414. [DOI: 10.1039/c9an01309a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Monovalent, divalent and trivalent chloride, sulfate and nitrate salts were examined to determine the critical coagulation concentration (CCC) for each salt and its corresponding effect on detection limits for SERS analysis of synthetic cannabinoids.
Collapse
Affiliation(s)
| | - Jonathan Munoz
- Department of Chemistry
- Florida International University
- Miami
- USA
| | - Bruce McCord
- Department of Chemistry
- Florida International University
- Miami
- USA
| |
Collapse
|
46
|
Kalus MR, Lanyumba R, Lorenzo-Parodi N, Jochmann MA, Kerpen K, Hagemann U, Schmidt TC, Barcikowski S, Gökce B. Determining the role of redox-active materials during laser-induced water decomposition. Phys Chem Chem Phys 2019; 21:18636-18651. [DOI: 10.1039/c9cp02663k] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The decomposition of water and the formation of molecular hydrogen, oxygen, and hydrogen peroxide during laser ablation of redox-active materials is systematically studied and related to the ablation rate and oxidation degree of the nanoparticles.
Collapse
Affiliation(s)
- Mark-Robert Kalus
- Technical Chemistry I
- University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE)
- 45141 Essen
- Germany
| | - Riskyanti Lanyumba
- Technical Chemistry I
- University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE)
- 45141 Essen
- Germany
| | - Nerea Lorenzo-Parodi
- Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU)
- 45141 Essen
- Germany
| | - Maik A. Jochmann
- Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU)
- 45141 Essen
- Germany
| | - Klaus Kerpen
- Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU)
- 45141 Essen
- Germany
| | - Ulrich Hagemann
- Interdisciplinary Center for Analytics on the Nanoscale (ICAN) and Center for Nanointegration Duisburg-Essen (CENIDE)
- University of Duisburg-Essen
- 47057 Duisburg
- Germany
| | - Torsten C. Schmidt
- Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU)
- 45141 Essen
- Germany
| | - Stephan Barcikowski
- Technical Chemistry I
- University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE)
- 45141 Essen
- Germany
| | - Bilal Gökce
- Technical Chemistry I
- University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE)
- 45141 Essen
- Germany
| |
Collapse
|
47
|
Petersen B, Roa R, Dzubiella J, Kanduč M. Ionic structure around polarizable metal nanoparticles in aqueous electrolytes. SOFT MATTER 2018; 14:4053-4063. [PMID: 29670972 PMCID: PMC5968446 DOI: 10.1039/c8sm00399h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 04/04/2018] [Indexed: 06/08/2023]
Abstract
Metal nanoparticles are receiving increased scientific attention owing to their unique physical and chemical properties that make them suitable for a wide range of applications in diverse fields, such as electrochemistry, biochemistry, and nanomedicine. Their high metallic polarizability is a crucial determinant that defines their electrostatic character in various electrolyte solutions. Here, we introduce a continuum-based model of a metal nanoparticle with explicit polarizability in the presence of different kinds of electrolytes. We employ several, variously sophisticated, theoretical approaches, corroborated by Monte Carlo simulations in order to elucidate the basic electrostatics principles of the model. We investigate how different kinds of asymmetries between the ions result in non-trivial phenomena, such as charge separation and a build-up of a so-called zero surface-charge double layer.
Collapse
Affiliation(s)
- Bendix Petersen
- Research Group for Simulations of Energy Materials , Helmholtz-Zentrum Berlin für Materialien und Energie , Hahn-Meitner-Platz 1 , D-14109 Berlin , Germany . ;
- Institut für Physik , Humboldt-Universität zu Berlin , Newtonstr. 15 , D-12489 Berlin , Germany
| | - Rafael Roa
- Research Group for Simulations of Energy Materials , Helmholtz-Zentrum Berlin für Materialien und Energie , Hahn-Meitner-Platz 1 , D-14109 Berlin , Germany . ;
- Departamento de Física Aplicada I , Facultad de Ciencias , Universidad de Málaga , Campus de Teatinos s/n , E-29071 Málaga , Spain
| | - Joachim Dzubiella
- Research Group for Simulations of Energy Materials , Helmholtz-Zentrum Berlin für Materialien und Energie , Hahn-Meitner-Platz 1 , D-14109 Berlin , Germany . ;
- Physikalisches Institut , Albert-Ludwigs-Universität Freiburg , Hermann-Herder Str. 3 , D-79104 Freiburg , Germany
| | - Matej Kanduč
- Research Group for Simulations of Energy Materials , Helmholtz-Zentrum Berlin für Materialien und Energie , Hahn-Meitner-Platz 1 , D-14109 Berlin , Germany . ;
| |
Collapse
|
48
|
Kaulen C, Simon U. Ion specific effects on the immobilisation of charged gold nanoparticles on metal surfaces. RSC Adv 2018; 8:1717-1724. [PMID: 35540875 PMCID: PMC9077124 DOI: 10.1039/c7ra10374c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 12/19/2017] [Indexed: 12/25/2022] Open
Abstract
Since the pioneering work of F. Hofmeister, Arch. Exp. Pathol. Pharmakol., 1888, 24, 247, ion specific effects have been steadily reported in the context of colloidal or protein stabilisation in electrolyte solutions. Although the observed effects are omnipresent in chemistry and biology, their origin is still under ferocious discussion. Here, we report on ion specific effects affecting the self-assembly of amine and carboxylic acid functionalised gold nanoparticles on metal surfaces as well as in electrolyte solution as a function of the monovalent cations Li+, Na+, K+ and Cs+. Mercaptooctanoic acid and 1,8-amine-octanethiol functionalised gold nanoparticles were adsorbed on structured AuPd/Pt substrates under addition of the respective chloride salts. Furthermore, the influence of the same salts on the salt induced aggregation of these AuNP was investigated. Our results demonstrate that the assembly processes on the metal surface as well as in electrolyte solution are influenced by the addition of different cations. We attribute the observed effects to ion pairing of the functional end groups with the added cations. With these findings we introduce a new parameter to control the self-assembly of 2D AuNP arrays on solid supports or of 3D AuNP networks in solution, which could be of relevance for the fabrication of new tailor-made functional materials or for biomedical applications.
Collapse
Affiliation(s)
- C Kaulen
- JARA - FIT, RWTH Aachen University 52074 Aachen Germany
- Institute of Inorganic Chemistry, RWTH Aachen University 52074 Aachen Germany
| | - U Simon
- JARA - FIT, RWTH Aachen University 52074 Aachen Germany
- Institute of Inorganic Chemistry, RWTH Aachen University 52074 Aachen Germany
| |
Collapse
|
49
|
Plaisen S, Cheewasedtham W, Rujiralai T. Robust colorimetric detection based on the anti-aggregation of gold nanoparticles for bromide in rice samples. RSC Adv 2018; 8:21566-21576. [PMID: 35539899 PMCID: PMC9080936 DOI: 10.1039/c8ra03497d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 05/28/2018] [Indexed: 01/13/2023] Open
Abstract
Inorganic bromide (Br−) is an important contaminant ion as it can originate from the overuse of illegal methyl bromide as a fumigant in stored rice samples. Herein, we developed a simple and highly sensitive colorimetric sensor for bromide ion detection in rice samples. The sensor is based on the anti-aggregation of gold nanoparticles (AuNPs) by Br− in the presence of Cr3+, which made the method more selective than other typical aggregations of nanoparticles. The AuNPs underwent an aggregation process as a result of the coordination of Cr3+ and the carboxylate group of a citrate ion stabilized the AuNPs, resulting in a red-to-blue color change. When Br− was pre-mixed with the AuNPs and Cr3+ was added, the solution color changed from blue to red with an increase in the Br− concentration. The anti-aggregation process can be detected with the naked eye and monitored using UV-vis spectrophotometry. The linear calibration curve ranged between 0.31 and 3.75 μM Br− with a low LOD and LOQ of 0.04 and 0.13 μM. The recovery was excellent, ranging from 79.9–92.2% with an RSD of less than 4.0%. The good inter-day and intra-day precisions were 2.9–6.4% and 3.1–7.1%, respectively. The developed sensor has proved to provide a robust method for Br− detection in rice samples. In this work, we developed a AuNP colorimetric sensor for the facile, sensitive and selective detection of bromide ions in rice samples.![]()
Collapse
Affiliation(s)
- Siwat Plaisen
- Department of Chemistry
- Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Prince of Songkla University
- Hat Yai
| | - Wilairat Cheewasedtham
- Analytical Chemistry and Environment Research Unit
- Division of Chemistry
- Department of Science
- Faculty of Science and Technology
- Prince of Songkla University
| | - Thitima Rujiralai
- Department of Chemistry
- Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Prince of Songkla University
- Hat Yai
| |
Collapse
|
50
|
Favier I, Toro ML, Lecante P, Pla D, Gómez M. Palladium-mediated radical homocoupling reactions: a surface catalytic insight. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00901e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this work, we report a palladium nanoparticle-promoted reductive homocoupling of haloarenes, exhibiting a broad functional group tolerance. A mechanistic study was carried out, suggesting single-electron transfer processes on the metal surface.
Collapse
Affiliation(s)
- Isabelle Favier
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA)
- Université de Toulouse 3 – Paul Sabatier and CNRS UMR 5069
- 31062 Toulouse Cedex 9
- France
| | - Marie-Lou Toro
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA)
- Université de Toulouse 3 – Paul Sabatier and CNRS UMR 5069
- 31062 Toulouse Cedex 9
- France
| | - Pierre Lecante
- Centre d'Elaboration de Matériaux et d'Etudes Structurales (CEMES)
- CNRS UPR 8011
- 31055 Toulouse
- France
| | - Daniel Pla
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA)
- Université de Toulouse 3 – Paul Sabatier and CNRS UMR 5069
- 31062 Toulouse Cedex 9
- France
| | - Montserrat Gómez
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA)
- Université de Toulouse 3 – Paul Sabatier and CNRS UMR 5069
- 31062 Toulouse Cedex 9
- France
| |
Collapse
|