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Wolff N, Beuck C, Schaller T, Epple M. Possibilities and limitations of solution-state NMR spectroscopy to analyze the ligand shell of ultrasmall metal nanoparticles. NANOSCALE ADVANCES 2024; 6:3285-3298. [PMID: 38933863 PMCID: PMC11197423 DOI: 10.1039/d4na00139g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 05/24/2024] [Indexed: 06/28/2024]
Abstract
Ultrasmall nanoparticles have a diameter between 1 and 3 nm at the border between nanoparticles and large molecules. Usually, their core consists of a metal, and the shell of a capping ligand with sulfur or phosphorus as binding atoms. While the core structure can be probed by electron microscopy, electron and powder diffraction, and single-crystal structure analysis for atom-sharp clusters, it is more difficult to analyze the ligand shell. In contrast to larger nanoparticles, ultrasmall nanoparticles cause only a moderate distortion of the NMR signal, making NMR spectroscopy a qualitative as well as a quantitative probe to assess the nature of the ligand shell. The application of isotope-labelled ligands and of two-dimensional NMR techniques can give deeper insight into ligand-nanoparticle interactions. Applications of one- and two-dimensional NMR spectroscopy to analyze ultrasmall nanoparticles are presented with suitable examples, including a critical discussion of the limitations of NMR spectroscopy on nanoparticles.
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Affiliation(s)
- Natalie Wolff
- Inorganic Chemistry, Centre for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen 45117 Essen Germany
| | - Christine Beuck
- Structural and Medicinal Biochemistry, Centre for Medical Biotechnology (ZMB), University of Duisburg-Essen 45117 Essen Germany
| | - Torsten Schaller
- Organic Chemistry, University of Duisburg-Essen 45117 Essen Germany
| | - Matthias Epple
- Inorganic Chemistry, Centre for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen 45117 Essen Germany
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2
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Yanilkin VV, Nasretdinova GR, Kokorekin VA. Mediated electrochemical synthesis of metal nanoparticles. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4827] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The review integrates and analyzes data of original studies on the mediated electrosynthesis of metal nanoparticles — a new efficient and environmentally attractive process for obtaining these particles in the solution bulk. The general principles and specific features of electrosynthesis of metal nanoparticles by mediated electroreduction of metal ions and complexes are considered. The discussed issues include the role of cyclic voltammetry in the development of this method, the method efficiency, some aspects of selection of mediators, and aggregation, stabilization and catalytic activity of the metal nanoparticles thus obtained. Analysis of the results of mediated electrosynthesis of Pd, Ag, PdAg, Au, Pt and Cu nanoparticles stabilized by various compounds and mediated electrogeneration of highly active metal particles is used as basic data for discussion.
The bibliography includes 247 references.
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Yanilkin VV, Nastapova NV, Nasretdinova GR, Fazleeva RR, Samigullina AI, Gubaidullin AT, Ivshin YV, Evtugin VG, Osin YN. Fullerene-mediated electrosynthesis of Ag–C 60 nanocomposite in a water-organic two-phase system. MENDELEEV COMMUNICATIONS 2017. [DOI: 10.1016/j.mencom.2017.11.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Chakraborty I, Pradeep T. Atomically Precise Clusters of Noble Metals: Emerging Link between Atoms and Nanoparticles. Chem Rev 2017; 117:8208-8271. [DOI: 10.1021/acs.chemrev.6b00769] [Citation(s) in RCA: 1305] [Impact Index Per Article: 186.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Indranath Chakraborty
- DST Unit of Nanoscience (DST
UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Thalappil Pradeep
- DST Unit of Nanoscience (DST
UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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Perras FA, Padmos JD, Johnson RL, Wang LL, Schwartz TJ, Kobayashi T, Horton JH, Dumesic JA, Shanks BH, Johnson DD, Pruski M. Characterizing Substrate–Surface Interactions on Alumina-Supported Metal Catalysts by Dynamic Nuclear Polarization-Enhanced Double-Resonance NMR Spectroscopy. J Am Chem Soc 2017; 139:2702-2709. [DOI: 10.1021/jacs.6b11408] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Frédéric A. Perras
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - J. Daniel Padmos
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Robert L. Johnson
- Department
of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Lin-Lin Wang
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Thomas J. Schwartz
- Department
of Chemical and Biological Engineering, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Takeshi Kobayashi
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - J. Hugh Horton
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - James A. Dumesic
- Department
of Chemical and Biological Engineering, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Brent H. Shanks
- Department
of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Duane D. Johnson
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department
of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
- Department
of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Marek Pruski
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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Razzaque S, Hussain SZ, Hussain I, Tan B. Design and Utility of Metal/Metal Oxide Nanoparticles Mediated by Thioether End-Functionalized Polymeric Ligands. Polymers (Basel) 2016; 8:E156. [PMID: 30979251 PMCID: PMC6432149 DOI: 10.3390/polym8040156] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 03/30/2016] [Accepted: 03/31/2016] [Indexed: 01/08/2023] Open
Abstract
The past few decades have witnessed significant advances in the development of functionalized metal/metal oxide nanoparticles including those of inorganic noble metals and magnetic materials stabilized by various polymeric ligands. Recent applications of such functionalized nanoparticles, including those in bio-imaging, sensing, catalysis, drug delivery, and other biomedical applications have triggered the need for their facile and reproducible preparation with a better control over their size, shape, and surface chemistry. In this perspective, the multidentate polymer ligands containing functional groups like thiol, thioether, and ester are important surface ligands for designing and synthesizing stable nanoparticles (NPs) of metals or their oxides with reproducibility and high yield. These ligands have offered an unprecedented control over the particle size of both nanoparticles and nanoclusters with enhanced colloidal stability, having tunable solubility in aqueous and organic media, and tunable optical, magnetic, and fluorescent properties. This review summarizes the synthetic methodologies and stability of nanoparticles and fluorescent nanoclusters of metals (Au, Ag, Cu, Pt, and other transition metal oxides) prepared by using thioether based ligands and highlights their applications in bio-imaging, sensing, drug delivery, magnetic resonance imaging (MRI), and catalysis. The future applications of fluorescent metal NPs like thermal gradient optical imaging, single molecule optoelectronics, sensors, and optical components of the detector are also envisaged.
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Affiliation(s)
- Shumaila Razzaque
- Hubei Key Laboratory of Material Chemistry and Service Failure, Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 437004, China.
| | - Syed Zajif Hussain
- Department of Chemistry, Syed Babar Ali School of Science & Engineering (SBASSE), Lahore University of Management Sciences (LUMS), DHA, Lahore Cantt, Lahore 54792, Pakistan.
| | - Irshad Hussain
- Department of Chemistry, Syed Babar Ali School of Science & Engineering (SBASSE), Lahore University of Management Sciences (LUMS), DHA, Lahore Cantt, Lahore 54792, Pakistan.
| | - Bien Tan
- Hubei Key Laboratory of Material Chemistry and Service Failure, Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 437004, China.
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7
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Functionalization of Two-Dimensional MoS2: On the Reaction Between MoS2and Organic Thiols. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510219] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Chen X, Berner NC, Backes C, Duesberg GS, McDonald AR. Functionalization of Two-Dimensional MoS2: On the Reaction Between MoS2and Organic Thiols. Angew Chem Int Ed Engl 2016; 55:5803-8. [DOI: 10.1002/anie.201510219] [Citation(s) in RCA: 186] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 12/23/2015] [Indexed: 01/09/2023]
Affiliation(s)
- Xin Chen
- CRANN/AMBER Nanoscience Institute; Trinity College Dublin; The University of Dublin; College Green Dublin 2 Ireland
- School of Chemistry; Trinity College Dublin
| | - Nina C. Berner
- CRANN/AMBER Nanoscience Institute; Trinity College Dublin; The University of Dublin; College Green Dublin 2 Ireland
- School of Chemistry; Trinity College Dublin
| | - Claudia Backes
- CRANN/AMBER Nanoscience Institute; Trinity College Dublin; The University of Dublin; College Green Dublin 2 Ireland
- School of Physics; Trinity College Dublin
| | - Georg S. Duesberg
- CRANN/AMBER Nanoscience Institute; Trinity College Dublin; The University of Dublin; College Green Dublin 2 Ireland
- School of Chemistry; Trinity College Dublin
| | - Aidan R. McDonald
- CRANN/AMBER Nanoscience Institute; Trinity College Dublin; The University of Dublin; College Green Dublin 2 Ireland
- School of Chemistry; Trinity College Dublin
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Tong Y, Jiang T, Bendounan A, Harish MNK, Giglia A, Kubsky S, Sirotti F, Pasquali L, Sampath S, Esaulov VA. Case studies on the formation of chalcogenide self-assembled monolayers on surfaces and dissociative processes. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2016; 7:263-277. [PMID: 26977383 PMCID: PMC4778531 DOI: 10.3762/bjnano.7.24] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 02/03/2016] [Indexed: 06/05/2023]
Abstract
This report examines the assembly of chalcogenide organic molecules on various surfaces, focusing on cases when chemisorption is accompanied by carbon-chalcogen atom-bond scission. In the case of alkane and benzyl chalcogenides, this induces formation of a chalcogenized interface layer. This process can occur during the initial stages of adsorption and then, after passivation of the surface, molecular adsorption can proceed. The characteristics of the chalcogenized interface layer can be significantly different from the metal layer and can affect various properties such as electron conduction. For chalcogenophenes, the carbon-chalcogen atom-bond breaking can lead to opening of the ring and adsorption of an alkene chalcogenide. Such a disruption of the π-electron system affects charge transport along the chains. Awareness about these effects is of importance from the point of view of molecular electronics. We discuss some recent studies based on X-ray photoelectron spectroscopy that shed light on these aspects for a series of such organic molecules.
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Affiliation(s)
- Yongfeng Tong
- Institut des Sciences Moléculaires d’Orsay, UMR 8214 CNRS-Université Paris Sud, Université Paris-Saclay, F-91405 Orsay, France
- Synchrotron Soleil, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - Tingming Jiang
- Institut des Sciences Moléculaires d’Orsay, UMR 8214 CNRS-Université Paris Sud, Université Paris-Saclay, F-91405 Orsay, France
- Synchrotron Soleil, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
- Dipartimento di Ingegneria ‘E. Ferrari’, Università di Modena e Reggio Emilia, Via Vignolese 905, 41125 Modena, Italy
| | - Azzedine Bendounan
- Synchrotron Soleil, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | | | - Angelo Giglia
- CNR-IOM, s.s.14, km 163.5 in Area Science Park, 34012 Trieste, Italy
| | - Stefan Kubsky
- Synchrotron Soleil, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - Fausto Sirotti
- Synchrotron Soleil, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - Luca Pasquali
- Dipartimento di Ingegneria ‘E. Ferrari’, Università di Modena e Reggio Emilia, Via Vignolese 905, 41125 Modena, Italy
- CNR-IOM, s.s.14, km 163.5 in Area Science Park, 34012 Trieste, Italy
- Physics Department, University of Johannesburg, P.O. Box 524, Auckland Park 2006, South Africa
| | - Srinivasan Sampath
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, CV Raman Avenue, Bangalore 560 012, India
| | - Vladimir A Esaulov
- Institut des Sciences Moléculaires d’Orsay, UMR 8214 CNRS-Université Paris Sud, Université Paris-Saclay, F-91405 Orsay, France
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Johnson RL, Schwartz TJ, Dumesic JA, Schmidt-Rohr K. Methionine bound to Pd/γ-Al2O3 catalysts studied by solid-state (13)C NMR. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2015; 72:64-72. [PMID: 26422257 DOI: 10.1016/j.ssnmr.2015.09.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 09/07/2015] [Accepted: 09/11/2015] [Indexed: 06/05/2023]
Abstract
The chemisorption and breakdown of methionine (Met) adsorbed on Pd/γ-Al2O3 catalysts were investigated by solid-state NMR. (13)C-enriched Met (ca. 0.4mg) impregnated onto γ-Al2O3 or Pd/γ-Al2O3 gives NMR spectra with characteristic features of binding to γ-Al2O3, to Pd nanoparticles, and oxidative or reductive breakdown of Met. The SCH3 groups of Met showed characteristic changes in chemical shift on γ-Al2O3 (13ppm) vs. Pd (19ppm), providing strong evidence for preferential binding to Pd, while the NC carbon generates a small resonance at 96ppm assigned to a distinct nonprotonated species bound to O or Pd. Additionally, NMR shows that the SCH3 groups of Met are mobile on γ-Al2O3 but immobilized by binding to Pd particles; on small Pd particles (ca. 4nm), the NCH groups undergo large-amplitude motions. In a reducing environment, Met breaks down by C-S bond cleavage followed by formation of C2-C4 organic acids. The SCH3 signal shifts to 22ppm, which is likely the signature of the principal species responsible for strong catalyst inhibition. These experiments demonstrate that solid-state magic-angle spinning NMR of (13)C-enriched Met can be a sensitive probe to investigate catalyst surfaces and characterize catalyst inhibition both before reaction and postmortem.
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Affiliation(s)
- Robert L Johnson
- Department of Chemistry, Iowa State University, Ames, IA 50011, United States
| | - Thomas J Schwartz
- Department of Chemical and Biological Engineering, University of Wisconsin, Madison, WI 53706, United States
| | - James A Dumesic
- Department of Chemical and Biological Engineering, University of Wisconsin, Madison, WI 53706, United States
| | - Klaus Schmidt-Rohr
- Department of Chemistry, Iowa State University, Ames, IA 50011, United States; Department of Chemistry, Brandeis University, Waltham, MA 02453, United States.
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Nicolas J, Jaafar M, Sepetdjian E, Saad W, Sioutas C, Shihadeh A, Saliba NA. Redox activity and chemical interactions of metal oxide nano- and micro-particles with dithiothreitol (DTT). ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2015; 17:1952-1958. [PMID: 26406549 DOI: 10.1039/c5em00352k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The wide application and production of nanotechnology have increased the interest in studying the toxicity of nano- and micro-sized particles escaping into air from various aspects of the production process. Metal oxides (MOs) are one particular class of particles that exist abundantly in ambient PM. Studies show an emphasis on biological mechanisms by which inhalation exposure to MOs leads to disease. However, different biological assays provide different redox activity rankings making it difficult to assess the contributions of various MOs to measures of aggregate toxicity in multi-pollutant systems such as ambient PM. Therefore, research to evaluate the chemical interaction between these particles and molecules that are relevant to cellular redox activity can help in establishing indicators of reactivity. In particular, this study assesses the redox activity of six MOs mainly emitted from anthropogenic industrial activities using the dithiothreitol (DTT) assay. DTT is commonly used in acellular assays due to its analogous structure to cellular glutathione. The structural and chemical behaviors between active MOs and DTT were elucidated using FTIR, NMR, and BET methods. The results indicate that the health risk (redox activity) associated with MOs is mainly a function of their surface reactivity demonstrated by the ability of the oxidized (S-H) bond in DTT to form a stable bond with the MO surface.
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Affiliation(s)
- Johny Nicolas
- American University of Beirut, Chemistry Department, Faculty of Arts and Sciences, Beirut, Lebanon.
| | - Malek Jaafar
- American University of Beirut, Chemistry Department, Faculty of Arts and Sciences, Beirut, Lebanon.
| | - Elizabeth Sepetdjian
- American University of Beirut, Chemistry Department, Faculty of Arts and Sciences, Beirut, Lebanon.
| | - Walid Saad
- American University of Beirut, Department of Chemical and Petroleum Engineering, Faculty of Engineering and Architecture, Lebanon
| | - Constantinos Sioutas
- University of Southern California, Department of Civil and Environmental Engineering, Los Angeles, USA
| | - Alan Shihadeh
- American University of Beirut, Mechanical Engineering Department, Faculty of Engineering and Architecture, Lebanon
| | - Najat A Saliba
- American University of Beirut, Chemistry Department, Faculty of Arts and Sciences, Beirut, Lebanon.
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Li Y, Zelakiewicz BS, Allison TC, Tong YJ. Measuring Level Alignment at the Metal-Molecule Interface by In Situ Electrochemical13C NMR. Chemphyschem 2015; 16:747-51. [DOI: 10.1002/cphc.201402889] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Indexed: 11/09/2022]
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Liu Y, Sun C, Bolin T, Wu T, Liu Y, Sternberg M, Sun S, Lin XM. Kinetic pathway of palladium nanoparticle sulfidation process at high temperatures. NANO LETTERS 2013; 13:4893-4901. [PMID: 24067076 DOI: 10.1021/nl402768b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A significant issue related to Palladium (Pd) based catalysts is that sulfur-containing species, such as alkanethiols, can form a PdSx underlayer on nanoparticle surface and subsequently poison the catalysts. Understanding the exact reaction pathway, the degree of sulfidation, the chemical stoichiometry, and the temperature dependence of this process is critically important. Combining energy-filtered transmission electron microscopy (EFTEM), X-ray diffraction (XRD), and X-ray absorption spectroscopy experiments at the S K-, Pd K-, and L2,3-edges, we show the kinetic pathway of Pd nanoparticle sulfidation process with the addition of excess amount of octadecanethiol at different temperatures, up to 250 °C. We demonstrate that the initial polycrystalline Pd-oleylamine nanoparticles gradually become amorphous PdSx nanoparticles, with the sulfur atomic concentration eventually saturating at Pd/S = 66:34 at 200 °C. This final chemical stoichiometry of the sulfurized nanoparticles closely matches that of the crystalline P16S7 phase (30.4% S), albeit being structurally amorphous. Sulfur diffusion into the nanoparticle depends strongly on the temperature. At 90 °C, sulfidation remains limited at the surface of nanoparticles even with extended heating time; whereas at higher temperatures beyond 125 °C, sulfidation occurs rapidly in the interior of the particles, far beyond what can be described as a core-shell model. This indicates sulfur diffusion from the surface to the interior of the particle is subject to a diffusion barrier and likely first go through the grain boundaries of the nanoparticle.
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Affiliation(s)
- Yi Liu
- Center for Nanoscale Materials and ‡Advanced Photon Source, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
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Lica GC, Tong YJ. Electrochemical impedance spectroscopic measurement of potential of zero charge of octanethiolate-protected Au and Pd nanoparticles. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2012.10.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mitsudome T, Takahashi Y, Ichikawa S, Mizugaki T, Jitsukawa K, Kaneda K. Metal-Ligand Core-Shell Nanocomposite Catalysts for the Selective Semihydrogenation of Alkynes. Angew Chem Int Ed Engl 2012; 52:1481-5. [DOI: 10.1002/anie.201207845] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Indexed: 11/10/2022]
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Mitsudome T, Takahashi Y, Ichikawa S, Mizugaki T, Jitsukawa K, Kaneda K. Metal-Ligand Core-Shell Nanocomposite Catalysts for the Selective Semihydrogenation of Alkynes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207845] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zaluzhna O, Li Y, Allison TC, Tong YJ. Inverse-Micelle-Encapsulated Water-Enabled Bond Breaking of Dialkyl Diselenide/Disulfide: A Critical Step for Synthesizing High-Quality Gold Nanoparticles. J Am Chem Soc 2012; 134:17991-6. [DOI: 10.1021/ja3068758] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Oksana Zaluzhna
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington,
D.C. 20057, United States
| | - Ying Li
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington,
D.C. 20057, United States
| | - Thomas C. Allison
- National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg,
Maryland 20899-8320, United States
| | - YuYe J. Tong
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington,
D.C. 20057, United States
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Li Y, Zaluzhna O, Zangmeister CD, Allison TC, Tong YJ. Different mechanisms govern the two-phase Brust-Schiffrin dialkylditelluride syntheses of Ag and Au nanoparticles. J Am Chem Soc 2012; 134:1990-2. [PMID: 22260496 DOI: 10.1021/ja210359r] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Here we report the first unambiguous identification of the chemical structures of the precursor species involving metal (Au and Ag) ions and Te-containing ligands in the Brust-Schiffrin syntheses of the respective metal nanoparticles, through which the different reaction pathways involved are delineated.
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Affiliation(s)
- Ying Li
- Department of Chemistry, Georgetown University, 37th and O Streets, NW, Washington, DC 20057, USA
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Zaluzhna O, Zangmeister C, Tong YJ. Synthesis of Au and Ag nanoparticles with alkylselenocyanates. RSC Adv 2012. [DOI: 10.1039/c2ra20729j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Zaluzhna O, Li Y, Zangmeister C, Allison TC, Tong YJ. Mechanistic insights on one-phase vs. two-phase Brust–Schiffrin method synthesis of Au nanoparticles with dioctyl-diselenides. Chem Commun (Camb) 2012; 48:362-4. [DOI: 10.1039/c1cc15955k] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Li Y, Zaluzhna O, Tong YJ. Critical role of water and the structure of inverse micelles in the Brust-Schiffrin synthesis of metal nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:7366-7370. [PMID: 21598931 DOI: 10.1021/la201158v] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Although Brust-Schiffrin two-phase synthesis is a popular method for synthesizing ligand-protected metal nanoparticles with an average size of less than 5 nm, the details on how the reactions can be controlled from a mechanistic point of view are still unclear, therefore hindering efforts to synthesize monodisperse metal nanoparticles. It was recently discovered that this method is basically an inverse-micelle-based synthesis (Li, Y.; Zaluzhna, O.; Xu, B.; Gao, Y.; Modest, J. M.; Tong, Y. Y. J. J. Am. Chem. Soc.2011, 133, 2092). In this letter, the critical role of water and the structure of inverse micelles in typical synthesis of gold nanoparticles were further investigated. We found that (1) water encapsulated in the inverse micelles of [TOA](+) that also hosted metal ions formed a hydrophilic microenvironment that acted as a reaction-enabling proton-accepting medium for the thiol protons (RS-H) and (2) not only the presence but also the amount of water in the reaction medium has a profound effect on the Au(I) precursor species (a pure [TOA][AuX(2)] complex or a mixture of a [TOA][AuX(2)] complex and polymeric [Au(I)SR](n) species), the reduction of Au(III) by thiols, and the formation of uniform small metal nanoparticles. A quantitative analysis of the (1)H NMR of the encapsulated water enabled an estimation of the size and composition of the involved inverse micelles.
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Affiliation(s)
- Ying Li
- Department of Chemistry, Georgetown University, 37th & O Streets NW, Washington, DC 20057, USA
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22
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Li Y, Zaluzhna O, Tong YJ. Identification of a source of size polydispersity and its solution in Brust-Schiffrin metal nanoparticle synthesis. Chem Commun (Camb) 2011; 47:6033-5. [PMID: 21526256 DOI: 10.1039/c1cc11642h] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The co-presence of thiol vs. disulfide in the well-known Brust-Schiffrin two-phase synthesis has been identified as a source of size polydispersity in nanoparticles synthesized and a procedure has been proposed to address this long outstanding issue.
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Affiliation(s)
- Ying Li
- Department of Chemistry, Georgetown University, 37th and "O" Streets NW, Washington DC 20057, USA
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23
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Li Y, Zaluzhna O, Xu B, Gao Y, Modest JM, Tong YJ. Mechanistic Insights into the Brust−Schiffrin Two-Phase Synthesis of Organo-chalcogenate-Protected Metal Nanoparticles. J Am Chem Soc 2011; 133:2092-5. [DOI: 10.1021/ja1105078] [Citation(s) in RCA: 157] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ying Li
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - Oksana Zaluzhna
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - Bolian Xu
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - Yuan Gao
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - Jacob M. Modest
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - YuYe J. Tong
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
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24
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Guerrero M, García-Antón J, Tristany M, Pons J, Ros J, Philippot K, Lecante P, Chaudret B. Design of new N,O hybrid pyrazole derived ligands and their use as stabilizers for the synthesis of Pd nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:15532-15540. [PMID: 20822133 DOI: 10.1021/la1016802] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We describe the stabilization studies of new palladium nanoparticles (Pd NPs) with a family of hybrid ligands. For this purpose, two new N,O-hybrid pyrazole derived ligands, as well as other previously reported, have been used as NP stabilizing agents following an organometallic approach. A comparison with corresponding palladium complexes has been carried out. We have also studied the superstructures formed by the agglomeration of NPs. To evaluate the scope of the system, different parameters have been studied such as the structure of the ligand, the ligand/metal ratio, the nature of the solvent, the concentration and the reaction time. The colloidal materials resulting from the different syntheses were all characterized by IR, transmission electron microscopy techniques at low or high resolution (TEM and HR-TEM), and scanning electron microscopy (SEM-FEG). All these observations have allowed us to better understand the coordination modes of the different ligands onto the surface of the NPs.
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Affiliation(s)
- Miguel Guerrero
- Departament de Química, Unitat de Química Inorgànica, Universitat Autònoma de Barcelona, 08193-Bellaterra, Barcelona, Spain
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25
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Carro P, Corthey G, Rubert AA, Benitez GA, Fonticelli MH, Salvarezza RC. The complex thiol-palladium interface: a theoretical and experimental study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:14655-14662. [PMID: 20726614 DOI: 10.1021/la102505c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This paper presents a theoretical study of the surface structures and thermodynamic stability of different thiol and sulfide structures present on the palladium surface as a function of the chemical potential of the thiol species. It has been found that as the chemical potential of the thiol is increased, the initially clean palladium surface is covered by a (√3 × √3)R30° sulfur lattice. Further increase in the thiol pressure or concentration leads to the formation of a denser (√7 × √7)R19.1° sulfur lattice, which finally undergoes a phase transition to form a complex (√7 × √7)R19.1° sulfur + thiol adlayer (3/7 sulfur + 2/7 thiol coverage). This transition is accompanied by a strong reconstruction of the Pd(111) surface. The formation of these surface structures has been explained in terms of the catalytic properties of the palladium surface. These results have been compared with X-ray photoelectron spectroscopy results obtained for thiols adsorbed on different palladium surfaces.
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Affiliation(s)
- Pilar Carro
- Departamento de Química Física, Universidad de La Laguna, Tenerife, Spain.
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26
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Gomez MV, Guerra J, Velders AH, Crooks RM. NMR Characterization of Fourth-Generation PAMAM Dendrimers in the Presence and Absence of Palladium Dendrimer-Encapsulated Nanoparticles. J Am Chem Soc 2008; 131:341-50. [DOI: 10.1021/ja807488d] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- M. Victoria Gomez
- NMR & MS Department, SupraMolecular Chemistry and Technology, MESA+ Institute for Nanotechnology, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Department of Chemistry and Biochemistry, Center for Nano and Molecular Science and Technology, and the Texas Materials Institute, The University of Texas at Austin, 1 University Station, A5300, Austin, Texas 78712-0165
| | - Javier Guerra
- NMR & MS Department, SupraMolecular Chemistry and Technology, MESA+ Institute for Nanotechnology, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Department of Chemistry and Biochemistry, Center for Nano and Molecular Science and Technology, and the Texas Materials Institute, The University of Texas at Austin, 1 University Station, A5300, Austin, Texas 78712-0165
| | - Aldrik H. Velders
- NMR & MS Department, SupraMolecular Chemistry and Technology, MESA+ Institute for Nanotechnology, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Department of Chemistry and Biochemistry, Center for Nano and Molecular Science and Technology, and the Texas Materials Institute, The University of Texas at Austin, 1 University Station, A5300, Austin, Texas 78712-0165
| | - Richard M. Crooks
- NMR & MS Department, SupraMolecular Chemistry and Technology, MESA+ Institute for Nanotechnology, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Department of Chemistry and Biochemistry, Center for Nano and Molecular Science and Technology, and the Texas Materials Institute, The University of Texas at Austin, 1 University Station, A5300, Austin, Texas 78712-0165
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27
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Li Y, Silverton LC, Haasch R, Tong YY. Alkanetelluroxide-protected gold nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:7048-7053. [PMID: 18557637 DOI: 10.1021/la800515b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The synthesis and characterization of the first air-stable tellurium-containing ligand-protected gold nanoparticles (NPs) are reported. Although the synthesis largely followed the well-known Brust two-phase approach, the starting ligand was dioctyl ditelluride rather than alkanetellurol, which is an analogue of the widely used alkanethiol. Dioctyl ditelluride was used because alkanetellurol is unstable. The 1H and 13C NMR spectra, as well as infrared spectra (IR) of the formed Au NPs, indicated that the Te-Te bond in the starting ligand was broken but the octyl group was intact. This was further corroborated by the solid-state 125Te NMR spectrum that displayed a very broad and significantly downfield-shifted peak, indicating that tellurium was directly bound to the Au core. Furthermore, the O 1s and Te 3d XPS spectra of the Au NPs indicated that the capping ligands were octanetelluroxide. An average particle size of 2.7 nm diameter as measured by transmission electron microscopy (TEM) corresponded to an Au607 core. A two-step weight loss of approximately 22.2% in total was observed in the thermogravimetric analysis, which indicated about 53% ligand monolayer coverage (i.e., Au607(Te(=O)C8H17)133). Additionally, dioctyl ditelluride demonstrated an intriguing reductive power that led to a more sophisticated chemistry of forming the air-stable octanetelluroxide-protected gold NPs. It has been found that (1) when the ratio of Au to Te was about 1.5 a colorless intermediate state similar to Au(I)-SR (the intermediate state widely accepted in the synthesis of thiolate-protected Au NPs) could be obtained and (2) this kind of intermediate state played a key role in the formation of stable Au NPs.
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Affiliation(s)
- Ying Li
- Department of Chemistry, Georgetown University, Washington, D.C. 20057, USA
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28
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De bruyn M, Neumann R. Stabilization of Palladium Nanoparticles by Polyoxometalates Appended with Alkylthiol Tethers and their Use as Binary Catalysts for Liquid Phase Aerobic Oxydehydrogenation. Adv Synth Catal 2007. [DOI: 10.1002/adsc.200600613] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Horinouchi S, Yamanoi Y, Yonezawa T, Mouri T, Nishihara H. Hydrogen storage properties of isocyanide-stabilized palladium nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:1880-4. [PMID: 16460122 DOI: 10.1021/la052657+] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Monodispersed palladium nanoparticles protected with n-octyl isocyanide were prepared, and their hydrogen absorption behavior was evaluated. The formation of the nanoparticles has been confirmed by means of 1H NMR and elemental analysis. Fourier transform infrared (FT-IR) showed that three distinct bands (2156, 1964, and 1611 cm(-1)) assigned to mono-, double-, and triple-bridged isocyanide ligands on the palladium surface. The average diameter of the particles was estimated to be 2.1 +/- 0.7 nm from observation by transmission electron microscopy (TEM). X-ray photoelectron spectroscopy (XPS) analysis revealed that the particles contained Pd(0) with little amounts of Pd(II) or Pd(IV), in sharp contrast to the thiol- or phosphine-stabilized palladium nanoparticles. The absorption and desorption of hydrogen were reversible, and the reactions were much faster for the nanoparticles than for the bulk palladium metal, whereas the storage capacity was almost the same, 0.6 wt %.
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Affiliation(s)
- Shintaro Horinouchi
- Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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