1
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Kvashnina KO. Electronic-Structure Interpretation: How Much Do We Understand Ce L 3 XANES? Chemistry 2024; 30:e202400755. [PMID: 38860741 DOI: 10.1002/chem.202400755] [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: 02/23/2024] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 06/12/2024]
Abstract
Historically, cerium has been attractive for pharmaceutical and industrial applications. The cerium atom has the unique ability to cycle between two chemical states (Ce(III) and Ce(IV)) and drastically adjust its electronic configuration: [Xe] 4f15d16s2 in response to a chemical reaction. Understanding how electrons drive chemical reactions is an important topic. The most direct way of probing the chemical and electronic structure of materials is by X-ray absorption spectroscopy (XAS) or X-ray absorption near-edge structure (XANES) in high energy resolution fluorescence detection (HERFD) mode. Such measurements at the Ce L3 edge have the advantage of a high penetration depth, enabling in-situ reaction studies in a time-resolved manner and investigation of material production or material performance under specific conditions. But how much do we understand Ce L3 XANES? This article provides an overview of the information that can be extracted from experimental Ce L3 XAS/XANES/HERFD data. A collection of XANES data recorded on various cerium systems in HERFD mode is presented here together with detailed discussions on data analysis and the current status of spectral interpretation, including electronic structure calculations.
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Affiliation(s)
- Kristina O Kvashnina
- The Rossendorf Beamline at ESRF, The European Synchrotron, CS40220, 38043, Grenoble Cedex 9, France
- Institute of Resource Ecology, Helmholtz Zentrum Dresden Rossendorf, Dresden, 01328, Germany
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2
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Aoyagi N, Motokawa R, Okumura M, Ueda Y, Saito T, Nishitsuji S, Taguchi T, Yomogida T, Sazaki G, Ikeda-Ohno A. Globular pattern formation of hierarchical ceria nanoarchitectures. Commun Chem 2024; 7:128. [PMID: 38867063 DOI: 10.1038/s42004-024-01199-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 05/13/2024] [Indexed: 06/14/2024] Open
Abstract
Dissipative structures often appear as an unstable counterpart of ordered structures owing to fluctuations that do not form a homogeneous phase. Even a multiphase mixture may simultaneously undergo one chemical reaction near equilibrium and another one that is far from equilibrium. Here, we observed in real time crystal seed formation and simultaneous nanocrystal aggregation proceeding from CeIV complexes to CeO2 nanoparticles in an acidic aqueous solution, and investigated the resultant hierarchical nanoarchitecture. The formed particles exhibited two very different size ranges, resulting in further pattern formation with opalescence. The hierarchically assembled structures in solutions were CeO2 colloids, viz. primary core clusters (1-3 nm) of crystalline ceria and secondary clusters (20-30 nm) assembled through surface ions. Such self-assembly is widespread in multi-component complex fluids, paradoxically moderating hierarchical reactions. Stability and instability are not only critical but also complementary for co-optimisation around the nearby free energy landscape prior to bifurcation.
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Affiliation(s)
- Noboru Aoyagi
- Advanced Science Research Centre (ASRC), Japan Atomic Energy Agency (JAEA), Tokai-mura, Ibaraki, 319-1195, Japan.
| | - Ryuhei Motokawa
- Materials Sciences Research Centre (MSRC), Japan Atomic Energy Agency (JAEA), Tokai-mura, Ibaraki, 319-1195, Japan
| | - Masahiko Okumura
- Centre for Computational Science and e-Systems, JAEA, Kashiwa, Chiba, 277-0871, Japan
| | - Yuki Ueda
- Materials Sciences Research Centre (MSRC), Japan Atomic Energy Agency (JAEA), Tokai-mura, Ibaraki, 319-1195, Japan
| | - Takumi Saito
- Advanced Science Research Centre (ASRC), Japan Atomic Energy Agency (JAEA), Tokai-mura, Ibaraki, 319-1195, Japan
- Nuclear Professional School, School of Engineering, The University of Tokyo, Ibaraki, 319-1188, Japan
| | - Shotaro Nishitsuji
- Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata, 992-8510, Japan
| | - Tomitsugu Taguchi
- National Institutes for Quantum Science and Technology, Takasaki-shi, Gunma, 370-1292, Japan
| | - Takumi Yomogida
- Nuclear Science and Engineering Centre (NSEC), Japan Atomic Energy Agency (JAEA), Tokai-mura, Ibaraki, 319-1195, Japan
| | - Gen Sazaki
- Institute of Low Temperature Science, Hokkaido University, Kita-ku, Sapporo, 060-0819, Japan
| | - Atsushi Ikeda-Ohno
- Advanced Science Research Centre (ASRC), Japan Atomic Energy Agency (JAEA), Tokai-mura, Ibaraki, 319-1195, Japan
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3
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Hastings AM, Herrera S, Harris S, Parsons-Davis T, Pascall AJ, Shusterman JA. Preparation of monodisperse cerium oxide particle suspensions from a tetravalent precursor. Dalton Trans 2024; 53:7376-7383. [PMID: 38584573 DOI: 10.1039/d4dt00146j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Cerium oxide particles are a unique material that enables studying the intersection of metal oxides, f-elements, and nanomaterials. Distinct from diverse applications in catalysis, energy, and medicine, cerium possesses additional influence as a non-radioactive actinide surrogate. Herein, we present a synthesis for sub-micron cerium particles using hexamethylenetetramine and ammonium hydroxide as precipitating agents with a CeIV precursor. The combinatorial homogeneous precipitation approach yields monodisperse and moderately-stable CeO2 particle suspensions in ethanol, as determined by powder X-ray diffraction, scanning electron microscopy, dynamic light scattering, and zeta potential measurements. Various additives may be used to moderate and manipulate the surface charge of the particles. Proof-of-concept electrophoretic deposition of the particles produces a uniform layer of CeO2 on graphite. The synthesis and suspension properties are developed as a methodology towards future controlled actinide hydrolysis and film deposition.
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Affiliation(s)
- Ashley M Hastings
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
| | - Susana Herrera
- Florida International University, Miami, FL 33199, USA
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Sharee Harris
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - Tashi Parsons-Davis
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
| | - Andrew J Pascall
- Materials Engineering Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - Jennifer A Shusterman
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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4
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Palys L, Stephen D, Mao Z, Mergelsberg ST, Boglaienko D, Chen Y, Liu L, Bae Y, Jin B, Sommers JA, De Yoreo JJ, Nyman M. Cerium Nanophases from Cerium Ammonium Nitrate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:4350-4360. [PMID: 38364791 DOI: 10.1021/acs.langmuir.3c03611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
Ceria nanomaterials with facile CeIII/IV redox behavior are used in sensing, catalytic, and therapeutic applications, where inclusion of CeIII has been correlated with reactivity. Understanding assembly pathways of CeO2 nanoparticles (NC-CeO2) in water has been challenged by "blind" synthesis, including rapid assembly/precipitation promoted by heat or strong base. Here, we identify a layered phase denoted Ce-I with a proposed formula CeIV(OH)3(NO3)·xH2O (x ≈ 2.5), obtained by adding electrolytes to aqueous cerium ammonium nitrate (CAN) to force precipitation. Ce-I represents intermediate hydrolysis species between dissolved CAN and NC-CeO2, where CAN is a commonly used CeIV compound that exhibits unusual aqueous and organic solubility. Ce-I features Ce-(OH)2-Ce units, representing the first step of hydrolysis toward NC-CeO2 formation, challenging prior assertions about CeIV hydrolysis. Structure/composition of poorly crystalline Ce-I was corroborated by a pair distribution function, Ce-L3 XAS (X-ray absorption spectroscopy), compositional analysis, and 17O nuclear magnetic resonance spectroscopy. Formation of Ce-I and its transformation to NC-CeO2 is documented in solution by small-angle X-ray scattering (SAXS) and in the solid-state by transmission electron microscopy (TEM) and powder X-ray diffraction. Morphologies identified by TEM support form factor models for SAXS analysis, evidencing the incipient assembly of Ce-I. Finally, two morphologies of NC-CeO2 are identified. Sequentially, spherical NC-CeO2 particles coexist with Ce-I, and asymmetric NC-CeO2 with up to 35% CeIII forms at the expense of Ce-I, suggesting direct replacement.
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Affiliation(s)
- Lauren Palys
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Doctor Stephen
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Zhiwei Mao
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | | | - Daria Boglaienko
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Ying Chen
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Lili Liu
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Yuna Bae
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Biao Jin
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - James A Sommers
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - James J De Yoreo
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
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5
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Umek P, Dürrschnabel M, Molina-Luna L, Škapin S, Korošec RC, Bittencourt C. The Role of Cerium Valence in the Conversion Temperature of H 2Ti 3O 7 Nanoribbons to TiO 2-B and Anatase Nanoribbons, and Further to Rutile. Molecules 2023; 28:5838. [PMID: 37570808 PMCID: PMC10421187 DOI: 10.3390/molecules28155838] [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: 07/11/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
CeO2-TiO2 is an important mixed oxide due to its catalytic properties, particularly in heterogeneous photocatalysis. This study presents a straightforward method to obtain 1D TiO2 nanostructures decorated with CeO2 nanoparticles at the surface. As the precursor, we used H2Ti3O7 nanoribbons prepared from sodium titanate nanoribbons by ion exchange. Two cerium sources with an oxidation state of +3 and +4 were used to obtain mixed oxides. HAADF-STEM mapping of the Ce4+-modified nanoribbons revealed a thin continuous layer at the surface of the H2Ti3O7 nanoribbons, while Ce3+ cerium ions intercalated partially between the titanate layers. The phase composition and morphology changes were monitored during calcination between 620 °C and 960 °C. Thermal treatment led to the formation of CeO2 nanoparticles on the surface of the TiO2 nanoribbons, whose size increased with the calcination temperature. The use of Ce4+ raised the temperature required for converting H2Ti3O7 to TiO2-B by approximately 200 °C, and the temperature for the formation of anatase. For the Ce3+ batch, the presence of cerium inhibited the conversion to rutile. Analysis of cerium oxidation states revealed the existence of both +4 and +3 in all calcined samples, regardless of the initial cerium oxidation state.
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Affiliation(s)
- Polona Umek
- Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia;
| | | | - Leopoldo Molina-Luna
- Department of Materials and Earth Sciences, Technische Universität Darmstadt, Peter-Grünberg-Strasse 2, 64287 Darmstadt, Germany;
| | - Srečo Škapin
- Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia;
| | - Romana Cerc Korošec
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna Pot 113, 1000 Ljubljana, Slovenia;
| | - Carla Bittencourt
- Chimie des Interactions Plasma-Surface (ChIPS), Research Institute for Materials Science and Engineering, University of Mons, 7000 Mons, Belgium
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6
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Voskresenskaya OO. Hydrolysis and Complex Formation of Cerium(IV) with Dioxysuccinic Acid in Sulfate Solutions. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622070233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Fichter S, Radoske T, Ikeda-Ohno A. Structure of the {U 13} polyoxo cluster U 13O 8Cl x (MeO) 38-x ( x = 2.3, MeO = methoxide). Acta Crystallogr E Crystallogr Commun 2021; 77:847-852. [PMID: 34422313 PMCID: PMC8340969 DOI: 10.1107/s2056989021007623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 07/26/2021] [Indexed: 11/25/2022]
Abstract
The structure of a new type of polyoxo cluster complex that contains thirteen uranium atoms, {U13}, is reported. The complex crystallized from methanol containing tetra-valent uranium (UIV) with a basic organic ligand, and was characterized as di-chloridoocta-cosa-μ2-methano-lato-octa-kis-(methano-lato)octa-μ4-oxido-trideca-uranium, [U13(CH3O)35.7Cl2.3O8] or [U13(μ4-Ooxo)8Cl x (MeO)38-x ] (x = 2.3, MeO = methoxide) (I), by single-crystal X-ray diffraction. The characterized {U13} polyoxo cluster complex (I) possesses a single cubic uranium polyhedron at the centre of the cluster core. To the best of our knowledge, this is the very first example of a polyoxo actinide complex that bears a single cubic polyhedron in its structure. The cubic polyhedron in I is well comparable in shape with those in bulk UO2. The U-O bonds in the cubic polyhedron of I are, however, significantly shorter than those not only in bulk UO2 but also in another analogue in the {U38} cluster. This shortening of U-O bonds, together with BVS calculations and the overall negative charge (2-) of I, suggests that the central uranium atom in I, which forms the single cubic coordination polyhedron, is presumably oxidized to the penta-valent state (UV) from the original tetra-valent state (UIV). Complex I is, hence, the first example of a polyoxo cluster possessing a single cubic coordination polyhedron of UV.
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Affiliation(s)
- Sebastian Fichter
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - Thomas Radoske
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - Atsushi Ikeda-Ohno
- Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Japan Atomic Energy Agency (JAEA), 2-4 Shirakata, Tokai-mura, Naka-gun, 319-1195 Ibaraki-ken, Japan
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8
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Chen H, Zhou A, Sun D, Zhao Y, Wang Y. Theoretical Investigation on the Elusive Reaction Mechanism of Spirooxindole Formation Mediated by Cytochrome P450s: A Nascent Feasible Charge-Shift C-O Bond Makes a Difference. J Phys Chem B 2021; 125:8419-8430. [PMID: 34313131 DOI: 10.1021/acs.jpcb.1c04088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Spirooxindoles are pivotal biofunctional groups widely distributed in natural products and clinic drugs. However, construction of such subtle chiral skeletons is a long-standing challenge to both organic and bioengineering scientists. The knowledge of enzymatic spirooxindole formation in nature may inspire rational design of new catalysts. To this end, we presented a theoretical investigation on the elusive mechanism of the spiro-ring formation at the 3-position of oxindole mediated by cytochrome P450 enzymes (P450). Our calculated results demonstrated that the electrophilic attack of CpdI, the active species of P450, to the substrate, shows regioselectivity, i.e., the attack at the C9 position forms a tetrahedral intermediate involving an unusual feasible charge-shift C9δ+-Oδ- bond, while the attack at the C1 position forms an epoxide intermediate. The predominant route is the first route with the charge-shift bonding intermediate due to holding a relatively lower barrier by >5 kcal mol-1 than the epoxide route, which fits the experimental observations. Such a delocalized charge-shift bond facilitates the formation of a spiro-ring mainly through elongation of the C1-C9 bond to eliminate the aromatization of the tricyclic beta-carboline. Our theoretical results shed profound mechanistic insights for the first time into the elusive spirooxindole formation mediated by P450s.
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Affiliation(s)
- Huanhuan Chen
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, Zhejiang, China.,Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Anran Zhou
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, Zhejiang, China.,Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Dongru Sun
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, Zhejiang, China.,Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Yufen Zhao
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, Zhejiang, China.,Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Yong Wang
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, Zhejiang, China.,Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
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9
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Gerber E, Romanchuk AY, Pidchenko I, Amidani L, Rossberg A, Hennig C, Vaughan GBM, Trigub A, Egorova T, Bauters S, Plakhova T, Hunault MOJY, Weiss S, Butorin SM, Scheinost AC, Kalmykov SN, Kvashnina KO. The missing pieces of the PuO 2 nanoparticle puzzle. NANOSCALE 2020; 12:18039-18048. [PMID: 32648876 DOI: 10.1039/d0nr03767b] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The nanoscience field often produces results more mystifying than any other discipline. It has been argued that changes in the plutonium dioxide (PuO2) particle size from bulk to nano can have a drastic effect on PuO2 properties. Here we report a full characterization of PuO2 nanoparticles (NPs) at the atomic level and probe their local and electronic structures by a variety of methods available at the synchrotron, including extended X-ray absorption fine structure (EXAFS) at the Pu L3 edge, X-ray absorption near edge structure (XANES) in high energy resolution fluorescence detection (HERFD) mode at the Pu L3 and M4 edges, high energy X-ray scattering (HEXS) and X-ray diffraction (XRD). The particles were synthesized from precursors with different oxidation states of plutonium (III, IV, and V) under various environmentally and waste storage relevant conditions (pH 8 and pH > 10). Our experimental results analyzed with state-of-the-art theoretical approaches demonstrate that well dispersed, crystalline NPs with a size of ∼2.5 nm in diameter are always formed in spite of diverse chemical conditions. Identical crystal structures and the presence of only the Pu(iv) oxidation state in all NPs, reported here for the first time, indicate that the structure of PuO2 NPs is very similar to that of the bulk PuO2. All methods give complementary information and show that investigated fundamental properties of PuO2 NPs, rather than being exotic, are very similar to those of the bulk PuO2.
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Affiliation(s)
- Evgeny Gerber
- The Rossendorf Beamline at ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France.
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10
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Özkan E, Badaczewski F, Cop P, Werner S, Hofmann A, Votsmeier M, Amenitsch H, Smarsly BM. Peering into the Formation of Cerium Oxide Colloidal Particles in Solution by In Situ Small-Angle X-ray Scattering. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9175-9190. [PMID: 32659089 DOI: 10.1021/acs.langmuir.0c01463] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The formation of CeO2 colloidal particles upon heating an aqueous solution of (NH4)2Ce(NO3)6 to 100 °C was investigated by time-resolved in situ SAXS analysis using synchrotron radiation, providing absolute intensity data. In particular, the experiments were performed by applying different temperatures between room temperature and 100 °C as well as under variation of the ionic strength and concentration. Using validated SAXS evaluation tools (SASfit and McSAS software), the analyses revealed the presence of two types of particle populations possessing average dimensions of ca. 2 nm and 5-15 nm, with the latter being agglomerates of the 2 nm particles rather than single crystallites. The analysis revealed not only the changes in the size, but also the relative volume fractions of these two CeO2 particle populations as a function of the aforementioned parameters. Increasing the temperature increases the number of the 5-15 nm agglomerates on one hand by the enhanced nucleation rate of the primary particles. On the other hand, especially at high temperatures (90 and 100 °C) the larger agglomerate particles precipitate, resulting in interesting trends in the fractions of the two populations as a function of time, temperature, ionic strength, and precursor concentration. The experimental studies are complemented by calculating colloidal interaction energies based on classical DLVO theory. Thereby, this study provides detailed insight into the nucleation, growth, and agglomeration of CeO2 nanoparticles. The primary objective of this study is to provide a better understanding of the nucleation and growth of particles by the hydrolysis of the tetravalent cerium ion in aqueous solutions.
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Affiliation(s)
- Elifkübra Özkan
- Institute of Physical Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Umicore AG & Co. KG, Rodenbacher Chaussee 4, 63457 Hanau, Germany
| | - Felix Badaczewski
- Institute of Physical Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Center for Materials Research (LaMa), Justus-Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
| | - Pascal Cop
- Institute of Physical Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Sebastian Werner
- Institute of Physical Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | | | - Martin Votsmeier
- Umicore AG & Co. KG, Rodenbacher Chaussee 4, 63457 Hanau, Germany
- Technical University Darmstadt, 64287 Darmstadt, Germany
| | - Heinz Amenitsch
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | - Bernd M Smarsly
- Institute of Physical Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Center for Materials Research (LaMa), Justus-Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
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11
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Sales DA, Marques TMF, Ghosh A, Gusmão SBS, Vasconcelos TL, Luz-Lima C, Ferreira OP, Hollanda LM, Lima IS, Silva-Filho EC, Dittz D, Lobo AO, Viana BC. Synthesis of silver-cerium titanate nanotubes and their surface properties and antibacterial applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 115:111051. [PMID: 32600685 DOI: 10.1016/j.msec.2020.111051] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 04/23/2020] [Accepted: 05/02/2020] [Indexed: 11/18/2022]
Abstract
Nano-heterostructures of titanate nanotubes were synthesized and they revealed a complex structure with the formation of TiO2 (anatase), CeO2, Ag2O and metallic silver nanoparticles on the outer walls and intercalation of Ce4+ and Ag+ into the interlayer spaces of the nanotubes by microwave-assisted hydrothermal process and subjected to ion exchange reactions. To the best of our knowledge, this is the first reported silver and cerium co-exchanged titanate nanotubes for bio-applications. The co-ion exchange processes preserved the original tubular structure of titanate nanotubes with significant changes of the superficial as well as interlamellar environment. This study opens up possibility of synthesizing complex, functional nano-heterostructure with the scope of modification of the final structure, especially the amount and oxidation state of the intercalated cation (Ce4+, Ce3+ and Ag+) as well as the quantity and variety of the decorating nanoparticles (CeO2, Ag2O or metallic Ag). The interplay of which, in turn, can lead to important biological properties and applications, owing to their ion-liberation capacity. The samples were tested in antibacterial activity with two different kind of bacteria (gram positive and negative), cell cytotoxicity and adhesion, and it was found that the nano-heterostructure formed shows high antibacterial activity with low cytotoxicity and high cell adhesion, which makes it a promising material for further health applications.
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Affiliation(s)
- Débora A Sales
- Laboratório interdisciplinar de materiais avançados (LIMAV), Programa de Pós-Graduação em Ciência e Engenharia dos Materiais, Universidade Federal do Piauí - UFPI, Teresina, PI, Brazil
| | - Thalles M F Marques
- Instituto Federal de Educação, Ciência e Tecnologia do Piauí - IFPI, 64760-000, Campus São João do Piauí, PI, Brazil
| | - Anupama Ghosh
- LaMFA - Laboratório de Materiais Funcionais Avançados, Departamento de Física, Universidade Federal do Ceará - UFC, 60440-554 Fortaleza, Ceará, Brazil; Central Analítica, Universidade Federal do Ceará - UFC, 60440-554 Fortaleza, Ceará, Brazil
| | - Suziete B S Gusmão
- Laboratório interdisciplinar de materiais avançados (LIMAV), Programa de Pós-Graduação em Ciência e Engenharia dos Materiais, Universidade Federal do Piauí - UFPI, Teresina, PI, Brazil
| | - Thiago L Vasconcelos
- Divisão de Metrologia de Materiais, Instituto Nacional de Metrologia, Qualidade e Tecnologia (INMETRO), Duque de Caxias, Rio de Janeiro 25250-020, Brazil
| | - Cleanio Luz-Lima
- Departamento de Física, Universidade Federal do Piauí - UFPI, 64049-550, Teresina, Piauí, Brazil
| | - Odair P Ferreira
- LaMFA - Laboratório de Materiais Funcionais Avançados, Departamento de Física, Universidade Federal do Ceará - UFC, 60440-554 Fortaleza, Ceará, Brazil
| | - Luciana M Hollanda
- Programa de Pós-Graduação em Biotecnologia Industrial, Universidade Tiradentes - UNIT, 49032-490 Aracaju, Sergipe, Brazil
| | - Idglan S Lima
- Laboratório interdisciplinar de materiais avançados (LIMAV), Programa de Pós-Graduação em Ciência e Engenharia dos Materiais, Universidade Federal do Piauí - UFPI, Teresina, PI, Brazil
| | - Edson C Silva-Filho
- Laboratório interdisciplinar de materiais avançados (LIMAV), Programa de Pós-Graduação em Ciência e Engenharia dos Materiais, Universidade Federal do Piauí - UFPI, Teresina, PI, Brazil
| | - Dalton Dittz
- Departamento de Bioquímica e Farmacologia, Universidade Federal do Piauí - UFPI, 64049-550 Teresina, Piauí, Brazil
| | - Anderson O Lobo
- Laboratório interdisciplinar de materiais avançados (LIMAV), Programa de Pós-Graduação em Ciência e Engenharia dos Materiais, Universidade Federal do Piauí - UFPI, Teresina, PI, Brazil
| | - Bartolomeu C Viana
- Laboratório interdisciplinar de materiais avançados (LIMAV), Programa de Pós-Graduação em Ciência e Engenharia dos Materiais, Universidade Federal do Piauí - UFPI, Teresina, PI, Brazil; Departamento de Física, Universidade Federal do Piauí - UFPI, 64049-550, Teresina, Piauí, Brazil.
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12
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Bhatt L, Chen L, Guo J, Klie RF, Shi J, Pesavento RP. Hydrolyzed Ce(IV) salts limit sucrose-dependent biofilm formation by Streptococcus mutans. J Inorg Biochem 2020; 206:110997. [PMID: 32169780 DOI: 10.1016/j.jinorgbio.2020.110997] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 01/09/2020] [Accepted: 01/10/2020] [Indexed: 01/18/2023]
Abstract
Several studies have focused on the antimicrobial effects of cerium oxide nanoparticles (CeO2-NP) but few have focused on their effects on bacteria under initial biofilm formation conditions. Streptococcus mutans is a prolific biofilm former contributing to dental caries in the presence of fermentable carbohydrates and is a recognized target for therapeutic intervention. CeO2-NP derived solely from Ce(IV) salt hydrolysis were found to reduce adherent bacteria by approximately 40% while commercial dispersions of "bare" CeO2-NP (e.g., 3 nm, 10-20 nm, 30 nm diameter) and Ce(NO3)3·6H2O were either inactive or observed to slightly increase biofilm formation under similar in vitro conditions. Planktonic growth and dispersal assays support a non-bactericidal mode of biofilm inhibition active in the initial phases of S. mutans biofilm production. Human cell proliferation assays suggest only minor effects of hydrolyzed Ce(IV) salts on cellular metabolism at concentrations up to 1 mM Ce, with less observed toxicity compared to equimolar concentrations of AgNO3. The results presented herein have implications in clinical dentistry.
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Affiliation(s)
- Lopa Bhatt
- Department of Physics, University of Illinois at Chicago, 801 S. Paulina Street, Chicago, IL 60612, USA
| | - Lin Chen
- Center for Wound Healing and Tissue Regeneration, College of Dentistry, University of Illinois at Chicago, 801 S. Paulina Street, Chicago, IL 60612, USA
| | - Jinglong Guo
- Department of Physics, University of Illinois at Chicago, 801 S. Paulina Street, Chicago, IL 60612, USA
| | - Robert F Klie
- Department of Physics, University of Illinois at Chicago, 801 S. Paulina Street, Chicago, IL 60612, USA
| | - Junhe Shi
- Center for Wound Healing and Tissue Regeneration, College of Dentistry, University of Illinois at Chicago, 801 S. Paulina Street, Chicago, IL 60612, USA
| | - Russell P Pesavento
- Department of Oral Biology, College of Dentistry, University of Illinois at Chicago, 801 S. Paulina Street, Chicago, IL 60612, USA; The Center for Biomolecular Sciences and Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 801 S. Paulina Street, Chicago, IL 60612, USA.
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13
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Asghar MSA, Inkson BJ, Möbus G. Giant Radiolytic Dissolution Rates of Aqueous Ceria Observed in Situ by Liquid-Cell TEM. Chemphyschem 2017; 18:1247-1251. [PMID: 28276618 DOI: 10.1002/cphc.201601398] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 03/06/2017] [Indexed: 11/05/2022]
Abstract
The dynamics of cerium oxide nanoparticle aqueous corrosion are revealed in situ. We use innovative liquid-cell transmission electron microscopy (TEM) combined with deliberate high-intensity electron-beam irradiation of nanoparticle suspensions. This enables life video-recording of materials reactions in liquid, with nm resolution. We introduce image quantification to measure detailed rates of dissolution as a function of time and particle size to be compared with literature data. Giant dissolution rates, exceeding any previous reports for chemical dissolution rates at room temperature by many orders of magnitude, are discovered. The reasons for this accelerated dissolution are outlined, including the importance of the radiolysis of water preceding the ceria attack. Electron-water interaction generates radicals, ions, and hydrated electrons, which assist in hydration and reductive dissolution of oxide minerals. The presented methodology has the potential to become a novel accelerated testing procedure to compare multiple nanoscale materials for relative aqueous durability. The ceria-water system is of crucial importance for the fields of catalysis, abrasive polishing, environmental remediation, and as simulant for actinide oxide behaviour in contact with liquid for nuclear engineering.
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Affiliation(s)
- Muhammad Sajid Ali Asghar
- Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK
| | - Beverley J Inkson
- Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK
| | - Günter Möbus
- Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK
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14
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Pettinger NW, Williams REA, Chen J, Kohler B. Crystallization kinetics of cerium oxide nanoparticles formed by spontaneous, room-temperature hydrolysis of cerium(iv) ammonium nitrate in light and heavy water. Phys Chem Chem Phys 2017; 19:3523-3531. [DOI: 10.1039/c6cp08227k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Ceria nanocrystals form tenfold more slowly in D2O vs. H2O, revealing a rate-determining proton transfer reaction and a non-classical crystallization mechanism.
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Affiliation(s)
| | - Robert E. A. Williams
- Center for Electron Microscopy and Analysis
- Department of Materials Science and Engineering
- Ohio State University
- Columbus
- USA
| | - Jinquan Chen
- Department of Chemistry and Biochemistry
- Montana State University
- Bozeman
- USA
| | - Bern Kohler
- Department of Chemistry and Biochemistry
- Montana State University
- Bozeman
- USA
- Department of Chemistry and Biochemistry
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15
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Zänker H, Weiss S, Hennig C, Brendler V, Ikeda‐Ohno A. Oxyhydroxy Silicate Colloids: A New Type of Waterborne Actinide(IV) Colloids. ChemistryOpen 2016; 5:174-182. [PMID: 27957406 PMCID: PMC5130165 DOI: 10.1002/open.201500207] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 02/26/2016] [Indexed: 11/10/2022] Open
Abstract
At the near-neutral and reducing aquatic conditions expected in undisturbed ore deposits or in closed nuclear waste repositories, the actinides Th, U, Np, and Pu are primarily tetravalent. These tetravalent actinides (AnIV) are sparingly soluble in aquatic systems and, hence, are often assumed to be immobile. However, AnIV could become mobile if they occur as colloids. This review focuses on a new type of AnIV colloids, oxyhydroxy silicate colloids. We herein discuss the chemical characteristics of these colloids and the potential implication for their environmental behavior. The binary oxyhydroxy silicate colloids of AnIV could be potentially more mobile as a waterborne species than the well-known mono-component oxyhydroxide colloids.
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Affiliation(s)
- Harald Zänker
- Institute of Resource EcologyHelmholtz-Zentrum Dresden-RossendorfP.O. Box 51 01 1901314DresdenGermany
| | - Stephan Weiss
- Institute of Resource EcologyHelmholtz-Zentrum Dresden-RossendorfP.O. Box 51 01 1901314DresdenGermany
| | - Christoph Hennig
- Institute of Resource EcologyHelmholtz-Zentrum Dresden-RossendorfP.O. Box 51 01 1901314DresdenGermany
| | - Vinzenz Brendler
- Institute of Resource EcologyHelmholtz-Zentrum Dresden-RossendorfP.O. Box 51 01 1901314DresdenGermany
| | - Atsushi Ikeda‐Ohno
- Institute of Resource EcologyHelmholtz-Zentrum Dresden-RossendorfP.O. Box 51 01 1901314DresdenGermany
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16
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Codolà Z, Gómez L, Kleespies ST, Que L, Costas M, Lloret-Fillol J. Evidence for an oxygen evolving iron-oxo-cerium intermediate in iron-catalysed water oxidation. Nat Commun 2015; 6:5865. [PMID: 25609387 DOI: 10.1038/ncomms6865] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 11/17/2014] [Indexed: 02/08/2023] Open
Abstract
The non-haem iron complex α-[Fe(II)(CF3SO3)2(mcp)] (mcp=(N,N'-dimethyl-N,N'-bis(2-pyridylmethyl)-1,2-cis-diaminocyclohexane) reacts with Ce(IV) to oxidize water to O2, representing an iron-based functional model for the oxygen evolving complex of photosystem II. Here we trap an intermediate, characterized by cryospray ionization high resolution mass spectrometry and resonance Raman spectroscopy, and formulated as [(mcp)Fe(IV)(O)(μ-O)Ce(IV)(NO3)3](+), the first example of a well-characterized inner-sphere complex to be formed in cerium(IV)-mediated water oxidation. The identification of this reactive Fe(IV)-O-Ce(IV) adduct may open new pathways to validate mechanistic notions of an analogous Mn(V)-O-Ca(II) unit in the oxygen evolving complex that is responsible for carrying out the key O-O bond forming step.
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Affiliation(s)
- Zoel Codolà
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, 17071 Girona, Spain
| | - Laura Gómez
- Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant St S.E., Minneapolis, Minnesota 55455, USA
| | - Scott T Kleespies
- Serveis Tècnics de Recerca (STR), Parc Cientific i Tecnològic, Universitat de Girona, 17003 Girona, Spain
| | - Lawrence Que
- Serveis Tècnics de Recerca (STR), Parc Cientific i Tecnològic, Universitat de Girona, 17003 Girona, Spain
| | - Miquel Costas
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, 17071 Girona, Spain
| | - Julio Lloret-Fillol
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, 17071 Girona, Spain
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17
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Husar R, Hübner R, Hennig C, Martin PM, Chollet M, Weiss S, Stumpf T, Zänker H, Ikeda-Ohno A. Intrinsic formation of nanocrystalline neptunium dioxide under neutral aqueous conditions relevant to deep geological repositories. Chem Commun (Camb) 2015; 51:1301-4. [DOI: 10.1039/c4cc08103j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Simple dilution of an aqueous Np(iv) bicarbonate solution triggers the intrinsic formation of nanocrystalline neptunium dioxide (NpO2). This new formation route could be a likely scenario in the repository and disposal of radioactive waste.
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Affiliation(s)
- Richard Husar
- Institute of Resource Ecology
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- D-01328 Dresden
- Germany
| | - René Hübner
- Institute of Ion Beam Physics and Materials Research
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- D-01328 Dresden
- Germany
| | - Christoph Hennig
- Institute of Resource Ecology
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- D-01328 Dresden
- Germany
- The Rossendorf Beamline at the European Synchrotron Radiation Facility (ESRF)
| | - Philippe M. Martin
- Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
- DEN
- DEC
- F-13108 Saint-Paul-Lez-Durance
- France
| | - Mélanie Chollet
- Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
- DEN
- DEC
- F-13108 Saint-Paul-Lez-Durance
- France
| | - Stephan Weiss
- Institute of Resource Ecology
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- D-01328 Dresden
- Germany
| | - Thorsten Stumpf
- Institute of Resource Ecology
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- D-01328 Dresden
- Germany
| | - Harald Zänker
- Institute of Resource Ecology
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- D-01328 Dresden
- Germany
| | - Atsushi Ikeda-Ohno
- Institute of Resource Ecology
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- D-01328 Dresden
- Germany
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18
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He D, Kacopieros M, Ikeda-Ohno A, Waite TD. Optimizing the design and synthesis of supported silver nanoparticles for low cost water disinfection. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:12320-12326. [PMID: 25272282 DOI: 10.1021/es502804a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Silver nanoparticles (AgNPs) were successfully synthesized and impregnated on silica using chemical reduction methods. XPS and Ag K-edge XANES analysis revealed that the impregnation of AgNPs onto silica using a chitosan + sodium borohydride (NaBH4) method results in higher silver loading and Ag(0)/Ag(I) ratio compared to that obtained using NH3 + NaBH4/glucose methods. The effects of the dosage of chitosan on silver loading, Ag(I) release, and bactericidal activities of AgNP-impregnated silica were investigated, with results showing that, at high dosages of chitosan, Ag(I) released from AgNP-impregnated silica plays an important role in disinfection, while AgNP-mediated bactericidal action dominates at low dosages of chitosan. To further decrease the manufacturing cost, partially oxidized "black rice husk ash" containing substantial residual carbon was applied as AgNP support and found to lead to a greater degree of silver impregnation and to exhibit a longer disinfection lifetime than that of lower carbon content silica supports. On the basis of these findings, it is clear that considerable scope exists for careful optimization in the design and production of AgNP-based bactericidal materials for water treatment purposes.
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Affiliation(s)
- Di He
- School of Civil and Environmental Engineering, University of New South Wales , Sydney, New South Wales 2052, Australia
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19
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Hennig C, Ikeda-Ohno A, Kraus W, Weiss S, Pattison P, Emerich H, Abdala PM, Scheinost AC. Crystal Structure and Solution Species of Ce(III) and Ce(IV) Formates: From Mononuclear to Hexanuclear Complexes. Inorg Chem 2013; 52:11734-43. [DOI: 10.1021/ic400999j] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Christoph Hennig
- Helmholtz-Zentrum
Dresden-Rossendorf, Institute of Resource Ecology, Bautzner Landstrasse 400, D-01314 Dresden, Germany
- The Rossendorf
Beamline, ESRF, BP 220, F-38043 Grenoble, France
| | - Atsushi Ikeda-Ohno
- Helmholtz-Zentrum
Dresden-Rossendorf, Institute of Resource Ecology, Bautzner Landstrasse 400, D-01314 Dresden, Germany
- School
of Civil and Environmental Engineering, The University of New South Wales, UNSW, Sydney, NSW 2052, Australia
- Institute for
Environmental Research, Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, New South Wales 2232, Australia
| | - Werner Kraus
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Strasse
11, D-12489 Berlin, Germany
| | - Stephan Weiss
- Helmholtz-Zentrum
Dresden-Rossendorf, Institute of Resource Ecology, Bautzner Landstrasse 400, D-01314 Dresden, Germany
| | - Philip Pattison
- Swiss−Norwegian
Beamlines, ESRF, BP 220, F-38043 Grenoble, France
| | - Hermann Emerich
- Swiss−Norwegian
Beamlines, ESRF, BP 220, F-38043 Grenoble, France
| | - Paula M. Abdala
- Swiss−Norwegian
Beamlines, ESRF, BP 220, F-38043 Grenoble, France
| | - Andreas C. Scheinost
- Helmholtz-Zentrum
Dresden-Rossendorf, Institute of Resource Ecology, Bautzner Landstrasse 400, D-01314 Dresden, Germany
- The Rossendorf
Beamline, ESRF, BP 220, F-38043 Grenoble, France
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