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Delafosse D, Reinert L, Azaïs P, Fontvieille D, Soneda Y, Morand P, Duclaux L. Potentialities of a mesoporous activated carbon as virus detection probe in aquatic systems. J Virol Methods 2022; 303:114496. [PMID: 35181346 DOI: 10.1016/j.jviromet.2022.114496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/11/2022] [Accepted: 02/13/2022] [Indexed: 11/30/2022]
Abstract
Enteric viruses are widely spread in water environments, some being harmful for human communities. Regular epidemics highlight the usefulness of analysing such viruses in wastewaters as a tool for epidemiologists to monitor the extent of their dissemination among populations. In this context, CNovel™ Powdered Activated Carbon (PAC) was chosen for its high porosity and high adsorption capacity to investigate sorbent ability to be used as part of of virus detection probes. Self-supported PAC Foils (PAC-F), PAC coated Brushes (PAC-B) and PAC Sampler (PAC-S) were used to prospect PAC efficacy in virus adsorption and above all, the feasibility of virus retrieval from them, allowing to further analysis such as molecular analysis quantification. Aiming at the development of a field-operational tool, PAC saturation and reusability were also investigated, as well as PAC-polarisation effect on its adsorption capacity. Our results pointed out that sorbent-based probes exhibited a high adsorption efficacy of spiked Murine Norovirus (MNV-1) in bare 0.1 M NaCl solution (>90 % for PAC-B and >86 % for PAC-F at ≈107 genome unit virus concentration), with no saturation within our experimental framework. On the other hand, polarisation assays using PAC-F as electrode, did not demonstrate any adsorption improvement. Experiments on PAC probes reusability suggested that they should be used three times at the most for a maximum efficiency. Values of virus retrieval were low (up to 11 % with PAC-B and up to 14 % with PAC-F in 0.1 M NaCl virus suspensions), illustrating the need for the techniques to be improved. A preliminary field assay using PAC-S, demonstrated that our catch-and-retrieve protocol yielded to the detection of autochthonous human Norovirus Genogroup I (NoV GI) and Adenovirus (AdV), in wastewaters suggesting its promising application as virus detection tool in such high loaded and complex waters.
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Affiliation(s)
- Doriane Delafosse
- Laboratoire Abiolab-Asposan, Montbonnot-Saint-Martin, France; Université Grenoble Alpes, CNRS, CEA, Institut de biologie structurale (IBS), Grenoble, France.
| | | | | | | | - Yasushi Soneda
- National Institute of Advanced Industrial Science and Technology (AIST), Energy Process Research Institute, Tsukuba, Ibaraki, 305-8569, Japan
| | - Patrice Morand
- Université Grenoble Alpes, CNRS, CEA, Institut de biologie structurale (IBS), Grenoble, France
| | - Laurent Duclaux
- Université Savoie Mont Blanc, EDYTEM, F-73000, Chambéry, France
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Kamiński M, Jurkiewicz K, Burian A, Bródka A. The structure of gold nanoparticles: molecular dynamics modeling and its verification by X-ray diffraction. J Appl Crystallogr 2020. [DOI: 10.1107/s1600576719014511] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Noble metal nanoparticles exhibit unique physical, chemical, biomedical, catalytic and optical properties. Understanding these properties and further development of production methods entail detailed knowledge of the structure at the atomic scale. Gold nanoparticles with multimodal size distribution were synthesized on porous silica and their atomic scale structure was studied by X-ray diffraction. The obtained experimental data are compared with molecular dynamics simulations. Spherical models of the Au nanoparticles, defined by ensembles of the Cartesian coordinates of constituent atoms, were generated and their geometry was optimized by applying theLAMMPSsoftware. The comparison was performed in both reciprocal and real space. A good agreement is achieved for the models with disorder that can be related to surface relaxation effects and vacancy defects. The approach adopted here may have wider applications for further structural studies of other nanomaterials, offering direct verification of simulation results by experiment.
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Karan S, Geng Y, Decurtins S, Liu SX, Repp J. Gold-linked strings of donor–acceptor dyads: on-surface formation and mutual orientation. Chem Commun (Camb) 2020; 56:7901-7904. [DOI: 10.1039/d0cc02990d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Strings of fused donor–acceptors with their dipoles following a complicated correlation driven partially by next-nearest-neighbor effects on Au(111).
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Affiliation(s)
- Sujoy Karan
- Institute of Experimental and Applied Physics
- University of Regensburg
- 93053 Regensburg
- Germany
| | - Yan Geng
- Department of Chemistry and Biochemistry
- University of Bern
- 3012 Bern
- Switzerland
| | - Silvio Decurtins
- Department of Chemistry and Biochemistry
- University of Bern
- 3012 Bern
- Switzerland
| | - Shi-Xia Liu
- Department of Chemistry and Biochemistry
- University of Bern
- 3012 Bern
- Switzerland
| | - Jascha Repp
- Institute of Experimental and Applied Physics
- University of Regensburg
- 93053 Regensburg
- Germany
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Xu H, Cheng D, Gao Y, Zeng XC. Assessment of Catalytic Activities of Gold Nanoclusters with Simple Structure Descriptors. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02423] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Haoxiang Xu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic−Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Daojian Cheng
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic−Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Yi Gao
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy
of Sciences, Shanghai 201800, People’s Republic of China
| | - Xiao Cheng Zeng
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic−Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
- Department of Chemistry and Department Biomolecular & Chemical Engineering, University of Nebraska, Lincoln, Nebraska 68588, United States
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Jurkiewicz K, Kamiński M, Glajcar W, Woźnica N, Julienne F, Bartczak P, Polański J, Lelątko J, Zubko M, Burian A. Paracrystalline structure of gold, silver, palladium and platinum nanoparticles. J Appl Crystallogr 2018. [DOI: 10.1107/s1600576718001723] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Metallic nanoparticles are of great importance because of their unique physical, chemical, antimicrobial, diagnostic, therapeutic, biomedical, sensing, biosensing, catalytic and optical properties. Detailed knowledge of the atomic scale structure of these materials is essential for understanding their activities and for exploiting their potential. This paper reports structural studies of silica-supported silver, gold, palladium and platinum nanoparticles using X-ray diffraction and high-resolution transmission electron microscopy. Electron microscopy observation allowed the determination of nanoparticle sizes, which were estimated to be in the range of 45–470 Å, and their distribution. The obtained histograms exhibit a multimodal distribution of the investigated nanoparticle sizes. The X-ray diffraction data were analyzed using the Rietveld method in the form of Williamson–Hall plots, thePDFguifitting procedure and model-based simulation. The Williamson–Hall plots provide evidence for the presence of strain in all investigated samples. ThePDFguifitting results indicate that the investigated nanoparticles consist of atomic clusters with different sizes and degrees of disorder as well as slightly different lattice parameters. The detailed structural characterization performedviamodel-based simulations proves that all samples exhibit a face-centered cubic type structure with paracrystalline distortion. The degree of disorder predicted by the paracrystalline theory is correlated with the sizes of the nanoparticles. The catalytic properties of the investigated noble metals are discussed in relation to their disordered structure.
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Ghalgaoui A, Doudin N, Sterrer M. Nanostructuring of Au(111) during the Adsorption of an Aromatic Isocyanide from Solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:91-99. [PMID: 27996271 DOI: 10.1021/acs.langmuir.6b03759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We present a combined vibrational and morphological characterization of the self-assembly of 1,4-phenylene-diisocyanide (PDI) on Au(111) from methanol solution. Vibrational sum frequency generation (vSFG) and scanning tunneling microscopy (STM) have been applied to determine the adsorption geometry of the PDI-Au adatom complexes as well as the morphological transformations of the Au(111) substrate upon SAM formation from solutions with PDI concentrations in the μM to mM range. At low concentration/coverage, PDI adsorbs in flat adsorption geometry, with both isocyanide groups attached to Au adatoms on the Au(111) surface. Transformation to a standing-up phase is observed with increasing concentration/coverage. In contrast to findings for PDI adsorbed in ultrahigh vacuum, PDI does not form a long-range-ordered monolayer phase when adsorbed from solution. In addition, the Au(111) surface is subjected to structural modifications. Au vacancy islands and ad-islands, which are typical substrate defects formed during the self-assembly of aromatic thiols on Au(111), are also created during PDI adsorption from solution. At low PDI concentration, the Au vacancy islands and ad-islands are found at specific sites mediated by the herringbone reconstruction of the Au(111) surface, giving rise to long-range-ordered structures. These structures do not form during UHV adsorption of PDI on Au(111) nor has a similar ordering effect been observed for any related thiol-SAM system investigated so far.
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Affiliation(s)
- Ahmed Ghalgaoui
- Institute of Physics, University of Graz , Universitätsplatz 5, A-8010 Graz, Austria
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft , Faradayweg 4-6, D-14195 Berlin, Germany
| | - Nassar Doudin
- Institute of Physics, University of Graz , Universitätsplatz 5, A-8010 Graz, Austria
| | - Martin Sterrer
- Institute of Physics, University of Graz , Universitätsplatz 5, A-8010 Graz, Austria
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft , Faradayweg 4-6, D-14195 Berlin, Germany
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Feng Z, Velari S, Cossaro A, Castellarin-Cudia C, Verdini A, Vesselli E, Dri C, Peressi M, De Vita A, Comelli G. Trapping of Charged Gold Adatoms by Dimethyl Sulfoxide on a Gold Surface. ACS NANO 2015; 9:8697-709. [PMID: 26079254 DOI: 10.1021/acsnano.5b02284] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report the formation of dimethyl sulfoxide (DMSO) molecular complexes on Au(111) enabled by native gold adatoms unusually linking the molecules via a bonding of ionic nature, yielding a mutual stabilization between molecules and adatom(s). DMSO is a widely used polar, aprotic solvent whose interaction with metal surfaces is not fully understood. By combining X-ray photoelectron spectroscopy, low temperature scanning tunneling microscopy, and density functional theory (DFT) calculations, we show that DMSO molecules form complexes made by up to four molecules arranged with adjacent oxygen terminations. DFT calculations reveal that most of the observed structures are accurately reproduced if, and only if, the negatively charged oxygen terminations are linked by one or two positively charged Au adatoms. A similar behavior was previously observed only in nonstoichiometric organic salt layers, fabricated using linkage alkali atoms and strongly electronegative molecules. These findings suggest a motif for anchoring organic adlayers of polar molecules on metal substrates and also provide nanoscale insight into the interaction of DMSO with gold.
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Affiliation(s)
- Zhijing Feng
- Physics Department, University of Trieste , Via A. Valerio 2, 34127 Trieste, Italy
- TASC Laboratory, Istituto Officina dei Materiali CNR-IOM , S.S. 14 km 163.5, 34149 Trieste, Italy
| | - Simone Velari
- Engineering and Architecture Department, University of Trieste , Via A. Valerio 6/1, 34147 Trieste, Italy
| | - Albano Cossaro
- TASC Laboratory, Istituto Officina dei Materiali CNR-IOM , S.S. 14 km 163.5, 34149 Trieste, Italy
| | - Carla Castellarin-Cudia
- TASC Laboratory, Istituto Officina dei Materiali CNR-IOM , S.S. 14 km 163.5, 34149 Trieste, Italy
| | - Alberto Verdini
- TASC Laboratory, Istituto Officina dei Materiali CNR-IOM , S.S. 14 km 163.5, 34149 Trieste, Italy
| | - Erik Vesselli
- Physics Department, University of Trieste , Via A. Valerio 2, 34127 Trieste, Italy
- TASC Laboratory, Istituto Officina dei Materiali CNR-IOM , S.S. 14 km 163.5, 34149 Trieste, Italy
| | - Carlo Dri
- Physics Department, University of Trieste , Via A. Valerio 2, 34127 Trieste, Italy
- TASC Laboratory, Istituto Officina dei Materiali CNR-IOM , S.S. 14 km 163.5, 34149 Trieste, Italy
| | - Maria Peressi
- Physics Department, University of Trieste , Via A. Valerio 2, 34127 Trieste, Italy
- CNR-IOM DEMOCRITOS , Area Science Park, S.S. 14 km 163.5, 34149 Trieste, Italy
- Consorzio Interuniversitario Nazionale per la Scienza e la Tecnologia dei Materiali (INSTM), Unità di ricerca di Trieste , Piazzale Europa 1, 34128 Trieste, Italy
| | - Alessandro De Vita
- Engineering and Architecture Department, University of Trieste , Via A. Valerio 6/1, 34147 Trieste, Italy
- Department of Physics, King's College London , Strand, London WC2R 2LS, United Kingdom
| | - Giovanni Comelli
- Physics Department, University of Trieste , Via A. Valerio 2, 34127 Trieste, Italy
- TASC Laboratory, Istituto Officina dei Materiali CNR-IOM , S.S. 14 km 163.5, 34149 Trieste, Italy
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Jewell AD, Kyran SJ, Rabinovich D, Sykes ECH. Effect of head-group chemistry on surface-mediated molecular self-assembly. Chemistry 2012; 18:7169-78. [PMID: 22532331 DOI: 10.1002/chem.201102956] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Revised: 01/16/2012] [Indexed: 11/07/2022]
Abstract
Surface molecular self-assembly is a fast advancing field with broad applications in sensing, patterning, device assembly, and biochemical applications. A vast number of practical systems utilize alkane thiols supported on gold surfaces. Whereas a strong Au-S bond facilitates robust self-assembly, the interaction is so strong that the surface is reconstructed, leaving etch pits that render the monolayers susceptible to degradation. By using different head group elements to adcust the molecule-surface interaction, a vast array of new systems with novel properties may be formed. In this paper we use a carefully chosen set of molecules to make a direct comparison of the self-assembly of thioether, selenoether, and phosphine species on Au(111). Using the herringbone reconstruction of gold as a sensitive readout of molecule-surface interaction strength, we correlate head-group chemistry with monolayer (ML) properties. It is demonstrated that the hard/soft rules of inorganic chemistry can be used to rationalize the observed trend of molecular interaction strengths with the soft gold surface, that is, P>Se>S. We find that the structure of the monolayers can be explained by the geometry of the molecules in terms of dipolar, quadrupolar, or van der Waals interactions between neighboring species driving the assembly of distinct ordered arrays. As this study directly compares one element with another in simple systems, it may serve as a guide for the design of self-assembled monolayers with novel structures and properties.
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Affiliation(s)
- April D Jewell
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, MA 02155, USA
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Jewell AD, Sykes ECH, Kyriakou G. Molecular-scale surface chemistry of a common metal nanoparticle capping agent: triphenylphosphine on Au(111). ACS NANO 2012; 6:3545-3552. [PMID: 22409543 DOI: 10.1021/nn300582g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Phosphine-stabilized Au clusters have been extensively studied and are used in various applications due to their unique structural, catalytic, and electronic properties. Triphenylphosphine (PPh(3)) is a key stabilizing ligand in the synthesis of Au nanoclusters. Despite its intense use in nanoparticle synthesis protocols, little is known regarding its surface chemistry, monolayer structure, density, and packing arrangement, all of which are important descriptors of functionality. Here, in contrast to sparse earlier investigations, we report that PPh(3) forms very ordered structures on Au(111). Atomic-scale imaging reveals that monolayer formation is accompanied by a partial lifting of the Au(111) surface reconstruction and ejection of extra Au atoms in the surface layer. Interestingly, these atoms are trapped and stabilized as two-dimensional Au nanoislands within the molecular layer. This behavior is in contrast to thiols, also common capping agents, which tend to remove Au atoms beyond those extra atoms present in the native reconstruction and form vacancy islands on the surface. Our data illustrate PPh(3)'s milder reactivity and reveal a new picture of its packing structure. These results shed new light on the surface chemistry of this important ligand for organic, organometallic, and nanoparticle synthesis.
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Affiliation(s)
- April D Jewell
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachusetts, United States
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