1
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Kuciakowski J, Stȩpień J, Żukrowski J, Lachowicz D, Żywczak A, Gajewska M, Przybylski M, Pollastri S, Olivi L, Sikora M, Kmita A. Thermal Decomposition Pathways of Zn xFe 3–xO 4 Nanoparticles in Different Atmospheres. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Juliusz Kuciakowski
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Joanna Stȩpień
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Jan Żukrowski
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Dorota Lachowicz
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Antoni Żywczak
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Marta Gajewska
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Marek Przybylski
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Simone Pollastri
- Elettra - Sincrotrone Trieste S.C.p.A, Strada Statale 14−km 163,5 in AREA Science Park, 34149 Basovizza, Trieste Italy
| | - Luca Olivi
- Elettra - Sincrotrone Trieste S.C.p.A, Strada Statale 14−km 163,5 in AREA Science Park, 34149 Basovizza, Trieste Italy
| | - Marcin Sikora
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Angelika Kmita
- AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
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2
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Eckardt M, Thomä SLJ, Dulle M, Hörner G, Weber B, Förster S, Zobel M. Long-Term Colloidally Stable Aqueous Dispersions of ≤5 nm Spinel Ferrite Nanoparticles. ChemistryOpen 2020; 9:1214-1220. [PMID: 33294306 PMCID: PMC7692645 DOI: 10.1002/open.202000313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 10/30/2020] [Indexed: 01/03/2023] Open
Abstract
Applications in biomedicine and ferrofluids, for instance, require long-term colloidally stable, concentrated aqueous dispersions of magnetic, biocompatible nanoparticles. Iron oxide and related spinel ferrite nanoparticles stabilized with organic molecules allow fine-tuning of magnetic properties via cation substitution and water-dispersibility. Here, we synthesize≤5 nm iron oxide and spinel ferrite nanoparticles, capped with citrate, betaine and phosphocholine, in a one-pot strategy. We present a robust approach combining elemental (CHN) and thermal gravimetric analysis (TGA) to quantify the ratio of residual solvent molecules and organic stabilizers on the particle surface, being of particular accuracy for ligands with heteroatoms compared to the solvent. SAXS experiments demonstrate the long-term colloidal stability of our aqueous iron oxide and spinel ferrite nanoparticle dispersions for at least 3 months. By the use of SAXS we approved directly the colloidal stability of the nanoparticle dispersions for high concentrations up to 100 g L-1.
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Affiliation(s)
- Mirco Eckardt
- Department of Chemistry, University of Bayreuth, Universitätsstr.30, 95440, Bayreuth, Germany
| | - Sabrina L J Thomä
- Department of Chemistry, University of Bayreuth, Universitätsstr.30, 95440, Bayreuth, Germany
| | - Martin Dulle
- JCNS-1/IBI-8: Neutron Scattering and Biological Matter, Forschungszentrum Jülich Gmbh, Wilhelm-Johnen-Straße, 52428, Jülich, Germany
| | - Gerald Hörner
- Department of Chemistry, University of Bayreuth, Universitätsstr.30, 95440, Bayreuth, Germany
| | - Birgit Weber
- Department of Chemistry, University of Bayreuth, Universitätsstr.30, 95440, Bayreuth, Germany
| | - Stefan Förster
- JCNS-1/IBI-8: Neutron Scattering and Biological Matter, Forschungszentrum Jülich Gmbh, Wilhelm-Johnen-Straße, 52428, Jülich, Germany
| | - Mirijam Zobel
- Department of Chemistry, University of Bayreuth, Universitätsstr.30, 95440, Bayreuth, Germany
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3
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Reksten AH, Russell AE, Richardson PW, Thompson SJ, Mathisen K, Seland F, Sunde S. An in situ XAS study of high surface-area IrO2 produced by the polymeric precursor synthesis. Phys Chem Chem Phys 2020; 22:18868-18881. [DOI: 10.1039/d0cp00217h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In situ XAS measurements show that iridium oxide electrocatalysts manufactured by the polymeric precursor synthesis method contain a significant fraction of elemental iridium metal and that potential cycling only oxidises a thin layer of the elemental component of the composite.
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Affiliation(s)
- Anita Hamar Reksten
- Department of Materials Science and Engineering
- Norwegian University of Science and Technology (NTNU)
- Trondheim
- Norway
| | - Andrea E. Russell
- Department of Chemistry
- University of Southampton
- Southampton SO17 1BJ
- UK
| | | | | | - Karina Mathisen
- Department of Chemistry
- Norwegian University of Science and Technology (NTNU)
- NO-7491 Trondheim
- Norway
| | - Frode Seland
- Department of Materials Science and Engineering
- Norwegian University of Science and Technology (NTNU)
- Trondheim
- Norway
| | - Svein Sunde
- Department of Materials Science and Engineering
- Norwegian University of Science and Technology (NTNU)
- Trondheim
- Norway
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4
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Dolcet P, Kirchberg K, Antonello A, Suchomski C, Marschall R, Diodati S, Muñoz-Espí R, Landfester K, Gross S. Exploring wet chemistry approaches to ZnFe2O4 spinel ferrite nanoparticles with different inversion degrees: a comparative study. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00241c] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
ZnFe2O4 was synthesised through three different low-temperature routes to study the effect on the structural evolution of the compounds.
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Affiliation(s)
- Paolo Dolcet
- Dipartimento di Scienze Chimiche
- Università degli Studi di Padova
- Padova
- Italy
- Institute of Chemical Technology and Polymer Chemistry
| | - Kristin Kirchberg
- Institute of Physical Chemistry
- Justus-Liebig-University Giessen
- D-35392 Giessen
- Germany
| | | | - Christian Suchomski
- Institute of Physical Chemistry
- Justus-Liebig-University Giessen
- D-35392 Giessen
- Germany
| | - Roland Marschall
- Institute of Physical Chemistry
- Justus-Liebig-University Giessen
- D-35392 Giessen
- Germany
- University of Bayreuth
| | - Stefano Diodati
- Dipartimento di Scienze Chimiche
- Università degli Studi di Padova
- Padova
- Italy
| | - Rafael Muñoz-Espí
- Institut de Ciència dels Materials (ICMUV)
- Universitat de València
- Catedràtic José Beltrán 2
- Spain
| | | | - Silvia Gross
- Dipartimento di Scienze Chimiche
- Università degli Studi di Padova
- Padova
- Italy
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5
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Permien S, Neumann T, Indris S, Neubüser G, Kienle L, Fiedler A, Hansen AL, Gianolio D, Bredow T, Bensch W. Transition metal cations on the move: simultaneous operando X-ray absorption spectroscopy and X-ray diffraction investigations during Li uptake and release of a NiFe 2O 4/CNT composite. Phys Chem Chem Phys 2018; 20:19129-19141. [PMID: 29974092 DOI: 10.1039/c8cp02919a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on results of a comprehensive investigation on reaction mechanisms occurring during Li uptake and release of the composite NiFe2O4/CNT. Operando X-ray diffraction (XRD) and X-ray absorption spectroscopy (XAS) data collected simultaneously using one in situ cell allowed thorough elucidation of structural and electronic alterations happening during Li uptake. From the beginning of Li uptake, the Bragg intensity of the spinel reflections decreases which can be explained by reduction of Fe3+ ions and simultaneous movement of the Fe2+ cations from tetrahedral 8a to empty octahedral 16c sites. The reduction of Fe3+ is clearly evidenced by XAS. The occupation of tetrahedral sites by Li+ can be excluded based on results of density functional theory calculations. Increasing the Li content leads to formation of a new crystalline phase resembling a monoxide with a NaCl-like structure. The appearance of the new phase is accompanied by a steady decrease of the sizes of coherently scattering domains of the spinel and a growth of the domains of the monoxide phase. After uptake of about 2.5 Li per NiFe2O4, all Fe3+ cations are reduced to Fe2+ and the tetrahedral 8a sites are empty (XAS spectra). Careful Rietveld refinements of X-ray powder patterns demonstrate that the tetrahedral 8a site is successively depleted with increasing Li content. Interestingly, the occupancy of the octahedral 16d site is also slightly reduced. Increasing the Li content beyond 2.5 Li/NiFe2O4 leads to successive reduction of the cations to very small metal particles embedded in a Li2O matrix (as evidenced by 7Li MAS NMR investigations). During Li release metallic Ni and Fe are reoxidized to Ni2+ resp. Fe3+. The cycling stability of NiFe2O4/CNT is significantly improved compared to pure NiFe2O4 or a mechanical mixture of NiFe2O4 and CNTs.
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Affiliation(s)
- Stefan Permien
- University of Kiel, Institute of Inorganic Chemistry, Max-Eyth-Str. 2, D-24118 Kiel, Germany.
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6
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Magnetic separation and recycling of ferrite nanocatalysts for CO2 decomposition with CH4 recovery from steel industrial flyash. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.09.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Su M, Liao C, Chan T, Shih K, Xiao T, Chen D, Kong L, Song G. Incorporation of Cadmium and Nickel into Ferrite Spinel Solid Solution: X-ray Diffraction and X-ray Absorption Fine Structure Analyses. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:775-782. [PMID: 29257673 DOI: 10.1021/acs.est.7b04350] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The feasibility of incorporating Cd and Ni in hematite was studied by investigating the interaction mechanism for the formation of CdxNi1-xFe2O4 solid solutions (CNFs) from CdO, NiO, and α-Fe2O3. X-ray diffraction results showed that the CNFs crystallized into spinel structures with increasing lattice parameters as the Cd content in the precursors was increased. Cd2+ ions were found to occupy the tetrahedral sites, as evidenced by Rietveld refinement and extended X-ray absorption fine structure analyses. The incorporation of Cd and Ni into ferrite spinel solid solution strongly relied on the processing parameters. The incorporation of Cd and Ni into the CNFs was greater at high x values (0.7 < x ≤ 1.0) than at low x values (0.0 ≤ x ≤ 0.7). A feasible treatment technique based on the investigated mechanism of CNF formation was developed, involving thermal treatment of waste sludge containing Cd and Ni. Both of these metals in the waste sludge were successfully incorporated into a ferrite spinel solid solution, and the concentrations of leached Cd and Ni from this solid solution were substantially reduced, stabilizing at low levels. This research offers a highly promising approach for treating the Cd and Ni content frequently encountered in electronic waste and its treatment residues.
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Affiliation(s)
- Minhua Su
- Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, Hong Kong SAR, China
| | - Changzhong Liao
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology , Guangzhou 510650, China
- Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, Hong Kong SAR, China
| | - Tingshan Chan
- National Synchrotron Radiation Research Center , Hsinchu Science Park, Hsinchu, Taiwan
| | - Kaimin Shih
- Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, Hong Kong SAR, China
| | | | | | - Lingjun Kong
- Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, Hong Kong SAR, China
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8
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Tian S, Ding S, Yang Q, Ren H, Ma Q, Zhao Y, Miao Z. The role of non-stoichiometric spinel for iso-butanol formation from biomass syngas over Zn–Cr based catalysts. RSC Adv 2017. [DOI: 10.1039/c7ra02627g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The non-stoichiometric Zn–Cr spinel plays an essential role for the formation of iso-butanol from bio-syngas. Co-precipitation method promotes the formation of non-stoichiometric Zn–Cr spinel and dramatically enhances the catalytic performance.
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Affiliation(s)
| | - Siyi Ding
- College of Science
- Xijing University
- Xi’an
- China
| | | | - Huaping Ren
- College of Science
- Xijing University
- Xi’an
- China
| | - Qiang Ma
- College of Science
- Xijing University
- Xi’an
- China
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9
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Permien S, Indris S, Neubüser G, Fiedler A, Kienle L, Zander S, Doyle S, Richter B, Bensch W. The Role of Reduced Graphite Oxide in Transition Metal Oxide Nanocomposites Used as Li Anode Material: An Operando Study on CoFe2O4/rGO. Chemistry 2016; 22:16929-16938. [DOI: 10.1002/chem.201603160] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Stefan Permien
- Institute of Inorganic Chemistry; University of Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Sylvio Indris
- Institute for Applied Materials - Energy Storage Systems; Karlsruhe Institute of Technology, P.O. Box 3640; 76021 Karlsruhe Germany
| | - Gero Neubüser
- Institute for Materials Science; University of Kiel; Kaiserstrasse 2 24143 Kiel Germany
| | - Andy Fiedler
- Institute for Applied Materials - Energy Storage Systems; Karlsruhe Institute of Technology, P.O. Box 3640; 76021 Karlsruhe Germany
| | - Lorenz Kienle
- Institute for Materials Science; University of Kiel; Kaiserstrasse 2 24143 Kiel Germany
| | - Stefan Zander
- Helmholtz-Zentrum Berlin; Helmholtz-Zentrum Berlin für Materialien und Energie; Hahn-Meitner-Platz 1 14109 Berlin Germany
| | - Stephen Doyle
- ANKA Synchrotron Radiation Facility; Karlsruhe Institute of Technology, P.O. Box 3640; 76021 Karlsruhe Germany
| | - Björn Richter
- Institute of Inorganic Chemistry; University of Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Wolfgang Bensch
- Institute of Inorganic Chemistry; University of Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
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10
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Galivarapu JK, Kumar D, Banerjee A, Sathe V, Aquilanti G, Rath C. Effect of size reduction on cation distribution and magnetic transitions in CoCr2O4 multiferroic: EXAFS, magnetic and diffused neutron scattering measurements. RSC Adv 2016. [DOI: 10.1039/c6ra10189e] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Demonstration of rich sequences of magnetic transitions in 10 and 50 nm particles of CoCr2O4 is shown through dc, ac magnetic measurements, EXAFS and diffused neutron scattering.
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Affiliation(s)
- Jagadish K. Galivarapu
- School of Materials Science and Technology
- Indian Institute of Technology (BHU)
- Varanasi
- India
| | - D. Kumar
- School of Materials Science and Technology
- Indian Institute of Technology (BHU)
- Varanasi
- India
| | - A. Banerjee
- UGC-DAE Consortium for Scientific Research
- University Campus
- Indore
- India
| | - V. Sathe
- UGC-DAE Consortium for Scientific Research
- University Campus
- Indore
- India
| | | | - Chandana Rath
- School of Materials Science and Technology
- Indian Institute of Technology (BHU)
- Varanasi
- India
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11
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Tian S, Wang S, Wu Y, Gao J, Wang P, Xie H, Yang G, Han Y, Tan Y. The role of potassium promoter in isobutanol synthesis over Zn–Cr based catalysts. Catal Sci Technol 2016. [DOI: 10.1039/c5cy02030a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The potassium promoter would tailor the microstructure of the Zn–Cr spinel and stabilize the surface hydroxyl species which greatly facilitate the formate of isobutanol.
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Affiliation(s)
- Shaopeng Tian
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Sichen Wang
- Shaanxi Yanchang Petroleum (Group) Corp. Ltd
- Xi'an
- PR China
| | - Yingquan Wu
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Junwen Gao
- Shaanxi Yanchang Petroleum (Group) Corp. Ltd
- Xi'an
- PR China
| | - Peng Wang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Hongjuan Xie
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Guohui Yang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Yizhuo Han
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Yisheng Tan
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
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12
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Tian S, Wang S, Wu Y, Gao J, Bai Y, Wang P, Xie H, Han Y, Tan Y. Cation distribution in Zn–Cr spinel structure and its effects on synthesis of isobutanol from syngas: Structure–activity relationship. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.04.019] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Tian S, Wang S, Wu Y, Gao J, Xie H, Li X, Yang G, Han Y, Tan Y. The real active sites over Zn–Cr catalysts for direct synthesis of isobutanol from syngas: structure-activity relationship. RSC Adv 2015. [DOI: 10.1039/c5ra17289f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The isobutanol productivity is closely related to the cation disorder distribution.
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Affiliation(s)
- Shaopeng Tian
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Sichen Wang
- Shaanxi Yanchang Petroleum (Group) Corp. Ltd
- Xi'an 710075
- P. R. China
| | - Yingquan Wu
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Junwen Gao
- Shaanxi Yanchang Petroleum (Group) Corp. Ltd
- Xi'an 710075
- P. R. China
| | - Hongjuan Xie
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Xiaoli Li
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Guohui Yang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Yizhuo Han
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Yisheng Tan
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
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14
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Chatterjee BK, Bhattacharjee K, Dey A, Ghosh CK, Chattopadhyay KK. Influence of spherical assembly of copper ferrite nanoparticles on magnetic properties: orientation of magnetic easy axis. Dalton Trans 2014; 43:7930-44. [DOI: 10.1039/c4dt00093e] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The spherical assembly of nanoparticles induces a high degree of alignment of magnetic easy axis as compared to randomly oriented nanoparticles which increases the reduced remanence ensuing straightened hysteresis loop.
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Affiliation(s)
- Biplab K. Chatterjee
- School of Materials Science and Nanotechnology
- Jadavpur University
- Kolkata 700032, India
| | | | - Abhishek Dey
- School of Materials Science and Nanotechnology
- Jadavpur University
- Kolkata 700032, India
| | - Chandan K. Ghosh
- School of Materials Science and Nanotechnology
- Jadavpur University
- Kolkata 700032, India
| | - Kalyan K. Chattopadhyay
- School of Materials Science and Nanotechnology
- Jadavpur University
- Kolkata 700032, India
- Thin Film and Nanoscience Laboratory
- Department of Physics
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15
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Diodati S, Nodari L, Natile MM, Caneschi A, de Julián Fernández C, Hoffmann C, Kaskel S, Lieb A, Di Noto V, Mascotto S, Saini R, Gross S. Coprecipitation of Oxalates: An Easy and Reproducible Wet-Chemistry Synthesis Route for Transition-Metal Ferrites. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301250] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Elucidation of the chemical environment for zinc species in an electron-rich zinc-incorporated zeolite. J SOLID STATE CHEM 2013. [DOI: 10.1016/j.jssc.2013.03.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Carta D, Marras C, Loche D, Mountjoy G, Ahmed SI, Corrias A. An X-ray absorption spectroscopy study of the inversion degree in zinc ferrite nanocrystals dispersed on a highly porous silica aerogel matrix. J Chem Phys 2013; 138:054702. [DOI: 10.1063/1.4789479] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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Landon J, Demeter E, İnoğlu N, Keturakis C, Wachs IE, Vasić R, Frenkel AI, Kitchin JR. Spectroscopic Characterization of Mixed Fe–Ni Oxide Electrocatalysts for the Oxygen Evolution Reaction in Alkaline Electrolytes. ACS Catal 2012. [DOI: 10.1021/cs3002644] [Citation(s) in RCA: 376] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- James Landon
- Department
of Chemical Engineering, Carnegie Mellon University, Pittsburgh Pennsylvania
15213, United States
| | - Ethan Demeter
- Department
of Chemical Engineering, Carnegie Mellon University, Pittsburgh Pennsylvania
15213, United States
| | - Nilay İnoğlu
- Department
of Chemical Engineering, Carnegie Mellon University, Pittsburgh Pennsylvania
15213, United States
| | - Chris Keturakis
- Operando Molecular Spectroscopy & Catalysis Lab, Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Lab, Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Relja Vasić
- Yeshiva University, 245 Lexington Avenue, New York, New York
10016, United States
| | - Anatoly I. Frenkel
- Yeshiva University, 245 Lexington Avenue, New York, New York
10016, United States
| | - John R. Kitchin
- U.S.-DOE National Energy Technology Laboratory, Pittsburgh, Pennsylvania
15236, United States
- Department
of Chemical Engineering, Carnegie Mellon University, Pittsburgh Pennsylvania
15213, United States
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19
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Sai R, Kulkarni SD, Vinoy KJ, Bhat N, Shivashankar SA. ZnFe2O4: Rapid and sub-100 °C synthesis and anneal-tuned magnetic properties. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm14874e] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Diodati S, Nodari L, Natile MM, Russo U, Tondello E, Lutterotti L, Gross S. Highly crystalline strontium ferrites SrFeO3−δ: an easy and effective wet-chemistry synthesis. Dalton Trans 2012; 41:5517-25. [DOI: 10.1039/c2dt11916a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- S Diodati
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Padova, Italy
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22
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Schultz-Sikma EA, Joshi HM, Ma Q, MacRenaris KW, Eckermann AL, Dravid VP, Meade TJ. Probing the Chemical Stability of Mixed Ferrites: Implications for MR Contrast Agent Design. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2011; 23:2657-2664. [PMID: 21603070 PMCID: PMC3097046 DOI: 10.1021/cm200509g] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Nanomaterials with mixed composition, in particular magnetic spinel ferrites, are emerging as efficient contrast agents for magnetic resonance imaging (MRI). Many factors, including size, composition, atomic structure, and surface properties are crucial in the design of such nanoparticle-based probes due to their influence on the magnetic properties. Silica-coated iron oxide (IO-SiO(2)) and cobalt ferrite (CoIO-SiO(2)) nanoparticles were synthesized using standard high temperature thermal decomposition and base-catalyzed water-in-oil microemulsion techniques. Under neutral aqueous conditions, it was found that 50-75% of the cobalt content in the CoIO-SiO(2) nanoparticles leached out of the core structure. Leaching caused a 7.2-fold increase in longitudinal relaxivity and an increase in the saturation magnetization from ~48 emu/g core to ~65 emu/g core. X-ray absorption fine structure studies confirmed that the atomic structure of the ferrite core was altered following leaching, while TEM and DLS confirmed that the morphology and size of the nanoparticle remained unchanged. The CoIO-SiO(2) nanoparticles converted from a partially inverted spinel cation arrangement (unleached state) to an inverse spinel arrangement (leached state). The control IO-SiO(2) nanoparticles remained stable with no change in structure and negligible changes in magnetic behavior. This detailed analysis highlights how important understanding the properties of nanomaterials is in the development of reliable agents for diagnostic and therapeutic applications.
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Affiliation(s)
| | - Hrushikesh M. Joshi
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208
| | - Qing Ma
- DND-CAT, Argonne National Laboratory Synchrotron Research Center, Northwestern University, Argonne, IL 60439
| | | | | | - Vinayak P. Dravid
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208
| | - Thomas J. Meade
- Department of Chemistry, Northwestern University, Evanston, IL 60208
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Kantam ML, Yadav J, Laha S, Srinivas P, Sreedhar B, Figueras F. Asymmetric Hydrosilylation of Ketones Catalyzed by Magnetically Recoverable and Reusable Copper Ferrite Nanoparticles. J Org Chem 2009; 74:4608-11. [DOI: 10.1021/jo9002823] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Lakshmi Kantam
- Indian Institute of Chemical Technology, Hyderabad-500007, India, and Institut de recherches sur la catalyse et l’environnement de Lyon, Lyon 69626 Cedex, France
| | - Jagjit Yadav
- Indian Institute of Chemical Technology, Hyderabad-500007, India, and Institut de recherches sur la catalyse et l’environnement de Lyon, Lyon 69626 Cedex, France
| | - Soumi Laha
- Indian Institute of Chemical Technology, Hyderabad-500007, India, and Institut de recherches sur la catalyse et l’environnement de Lyon, Lyon 69626 Cedex, France
| | - Pottabathula Srinivas
- Indian Institute of Chemical Technology, Hyderabad-500007, India, and Institut de recherches sur la catalyse et l’environnement de Lyon, Lyon 69626 Cedex, France
| | - Bojja Sreedhar
- Indian Institute of Chemical Technology, Hyderabad-500007, India, and Institut de recherches sur la catalyse et l’environnement de Lyon, Lyon 69626 Cedex, France
| | - F. Figueras
- Indian Institute of Chemical Technology, Hyderabad-500007, India, and Institut de recherches sur la catalyse et l’environnement de Lyon, Lyon 69626 Cedex, France
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