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Singh DK, Verma RK. Development of zirconia-modified polymer nanocomposites for Artificial Bio-Bearing (ABB) Applications. INTERNATIONAL NANO LETTERS 2023. [DOI: 10.1007/s40089-023-00393-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Liu Y, Li J, Das A, Kim H, Jones LO, Ma Q, Bedzyk MJ, Schatz GC, Kratish Y, Marks TJ. Synthesis and Structure-Activity Characterization of a Single-Site MoO 2 Catalytic Center Anchored on Reduced Graphene Oxide. J Am Chem Soc 2021; 143:21532-21540. [PMID: 34914390 DOI: 10.1021/jacs.1c07236] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Molecularly derived single-site heterogeneous catalysts can bridge the understanding and performance gaps between conventional homogeneous and heterogeneous catalysis, guiding the rational design of next-generation catalysts. While impressive advances have been made with well-defined oxide supports, the structural complexity of other supports and the nature of the grafted surface species present an intriguing challenge. In this study, single-site Mo(═O)2 species grafted onto reduced graphene oxide (rGO/MoO2) are characterized by XPS, DRIFTS, powder XRD, N2 physisorption, NH3-TPD, aqueous contact angle, active site poisoning assay, Mo EXAFS, model compound single-crystal XRD, DFT, and catalytic performance. NH3-TPD reveals that the anchored MoO2 moiety is not strongly acidic, while Mo 3d5/2 XPS assigns the oxidation state as Mo(VI), and XRD shows little rGO periodicity change on MoO2 grafting. Contact angle analysis shows that MoO2 grafting consumes rGO surface polar groups, yielding a more hydrophobic surface. The rGO/MoO2 DRIFTS assigns features at 959 and 927 cm-1 to the symmetric and antisymmetric Mo═O stretching modes, respectively, of an isolated cis-(O═Mo═O) moiety, in agreement with DFT computation. Moreover, the Mo EXAFS rGO/MoO2 structural data are consistent with isolated (C-O)2-Mo(═O)2 species having two Mo═O bonds and two Mo-O bonds at distances of 1.69(3) and 1.90(3) Å, respectively. rGO/MoO2 is also more active than the previously reported AC/MoO2 catalyst, with reductive carbonyl coupling TOFs approaching 1.81 × 103 h-1. rGO/MoO2 is environmentally robust and multiply recyclable with 69 ± 2% of the Mo sites catalytically significant. Overall, rGO/MoO2 is a structurally well-defined and versatile single-site Mo(VI) dioxo heterogeneous catalytic system.
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Affiliation(s)
- Yiqi Liu
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP), Northwestern University, Evanston, Illinois 60208, United States
| | - Jiaqi Li
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP), Northwestern University, Evanston, Illinois 60208, United States
| | - Anusheela Das
- Department of Material Science and Engineering and the Institute for Catalysis in Energy Processes (ICEP), Northwestern University, Evanston, Illinois 60208, United States
| | - Hacksung Kim
- Center for Catalysis and Surface Science, Northwestern University, Evanston, Illinois 60208, United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Leighton O Jones
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP), Northwestern University, Evanston, Illinois 60208, United States
| | - Qing Ma
- DND-CAT, Northwestern Synchrotron Research Center at the Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Michael J Bedzyk
- Department of Material Science and Engineering and the Institute for Catalysis in Energy Processes (ICEP), Northwestern University, Evanston, Illinois 60208, United States
| | - George C Schatz
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP), Northwestern University, Evanston, Illinois 60208, United States
| | - Yosi Kratish
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP), Northwestern University, Evanston, Illinois 60208, United States
| | - Tobin J Marks
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP), Northwestern University, Evanston, Illinois 60208, United States
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Abedini A, Shafiei M, Jamjah R, Ghasemi I. In situ polymerization of ethylene in the presence of graphene by α‐diimine Nickel (II)/MAO catalyst system: Thermal and rheological study. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6244] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ali Abedini
- Department of Polymerization Engineering Iran Polymer and Petrochemical Institute (IPPI) Tehran Iran
| | - Mohammad Shafiei
- Department of Polymer Processing Iran Polymer and Petrochemical Institute (IPPI) Tehran Iran
| | - Roghayeh Jamjah
- Department of Polymerization Engineering Iran Polymer and Petrochemical Institute (IPPI) Tehran Iran
| | - Ismaeil Ghasemi
- Department of Polymer Processing Iran Polymer and Petrochemical Institute (IPPI) Tehran Iran
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Correa SA, Daniliuc CG, Stark HS, Rojas RS. Nickel Catalysts Activated by rGO Modified with a Boron Lewis Acid To Produce rGO-Hyperbranched PE Nanocomposites. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00397] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sebastián A. Correa
- Laboratorio de Química Inorgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Casilla 306, Santiago-22 6094411, Chile
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelm-Universität, D-48149 Münster, Germany
| | - H. Sophia Stark
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraβe 4, D-85747 Garching, Germany
| | - René S. Rojas
- Laboratorio de Química Inorgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Casilla 306, Santiago-22 6094411, Chile
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Pavoski G, Baldisserotto DLS, Maraschin T, Brum LFW, dos Santos C, dos Santos JHZ, Brandelli A, Galland GB. Silver nanoparticles encapsulated in silica: Synthesis, characterization and application as antibacterial fillers in the ethylene polymerization. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.04.055] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Dayyoub T, Maksimkin AV, Kaloshkin S, Kolesnikov E, Chukov D, Dyachkova TP, Gutnik I. The Structure and Mechanical Properties of the UHMWPE Films Modified by the Mixture of Graphene Nanoplates with Polyaniline. Polymers (Basel) 2018; 11:E23. [PMID: 30960007 PMCID: PMC6401693 DOI: 10.3390/polym11010023] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 12/20/2018] [Accepted: 12/22/2018] [Indexed: 11/17/2022] Open
Abstract
Highly oriented UHMWPE films were reinforced with functionalized graphene nanoplates (GNP). GNP was functionalized by deposition of polyaniline (PANI) on the GNP surface. The structure of GNP/PANI was studied by Raman spectroscopy, and the structure of xerogels and films based on UHMWPE was studied by DSC and SEM. PANI promotes the reduction of the GNP aggregation in the UHMWPE matrix and increases the degree of crystallinity due to heterogeneous crystallization. The new lamellar crystal structure has a high drawability. The highest value of the tensile strength 1330 MPa (an increase of 45%) was obtained with a filler content of 2 wt % GNP/PANI, and the highest value of Young's modulus 41 GPa (an increase of 32%) was obtained with a filler content of 1 wt % GNP/PANI. The effect of GNP with PANI fillers on the dynamic mechanical properties of the UHMWPE films was discussed.
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Affiliation(s)
- Tarek Dayyoub
- National University of Science and Technology "MISIS", Moscow 119049, Russia.
| | - Aleksey V Maksimkin
- National University of Science and Technology "MISIS", Moscow 119049, Russia.
| | - Sergey Kaloshkin
- National University of Science and Technology "MISIS", Moscow 119049, Russia.
| | - Evgeniy Kolesnikov
- National University of Science and Technology "MISIS", Moscow 119049, Russia.
| | - Dilus Chukov
- National University of Science and Technology "MISIS", Moscow 119049, Russia.
| | | | - Irina Gutnik
- Tambov State Technical University, Tambov 392000, Russia.
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Nisar M, Sebag Bernd MDG, da Silva Filho LCP, Geshev J, de Souza Basso NR, Barrera Galland G. Polypropylene nanocomposites with electrical and magnetic properties. J Appl Polym Sci 2018. [DOI: 10.1002/app.46820] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Muhammad Nisar
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Avenue Bento Gonçalves 9500; 91501-970 Porto Alegre Rio Grande do Sul Brazil
| | - Maria da Graça Sebag Bernd
- Laboratório de Ensaios e Modelos Estruturais, Escola de Engenharia Civil; Universidade Federal do Rio Grande do Sul, Avenue Bento Gonçalves 9500; 91501-970 Porto Alegre Rio Grande do Sul Brazil
| | - Luiz C. P. da Silva Filho
- Laboratório de Ensaios e Modelos Estruturais, Escola de Engenharia Civil; Universidade Federal do Rio Grande do Sul, Avenue Bento Gonçalves 9500; 91501-970 Porto Alegre Rio Grande do Sul Brazil
| | - Julian Geshev
- Instituto de Física, Universidade Federal do Rio Grande do Sul, Avenue Bento Gonçalves 9500; 91501-970 Porto Alegre Rio Grande do Sul Brazil
| | - Nara R. de Souza Basso
- Faculdade de Química; Pontifícia Universidade Católica do Rio Grande do Sul, Avenue Ipiranga 6681; 90619-900 Porto Alegre Rio Grande do Sul Brazil
| | - Griselda Barrera Galland
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Avenue Bento Gonçalves 9500; 91501-970 Porto Alegre Rio Grande do Sul Brazil
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Pavoski G, Kalikoski R, Souza G, Brum LFW, dos Santos C, Abo Markeb A, dos Santos JHZ, Font X, dell'Erba I, Galland GB. Synthesis of polyethylene/silica-silver nanocomposites with antibacterial properties by in situ polymerization. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.07.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Nisar M, Thue PS, Heck CA, Salazar Cuaila J, Geshev J, Lima EC, Jacobi MM, Galland GB. Synthesis of polyethylene/nickel–carbon stimuli-responsive material under magnetic field at room temperature: Effect of the filler on the properties. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.12.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Suen MC, Gu JH, Hwang JJ, Wu CL, Lee HT. In-situ polymerization and characteristic properties of the waterborne poly(siloxanes-urethane)s nanocomposites containing graphene. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-017-1424-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Nisar M, Bergmann CP, Geshev J, Quijada R, Maraschin T, de Souza Basso NR, Barrera EG, Galland GB. Synthesis of high-density polyethylene/rGO-CNT-Fe nanocomposites with outstanding magnetic and electrical properties. J Appl Polym Sci 2017. [DOI: 10.1002/app.45382] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Muhammad Nisar
- Instituto de Química; Universidade Federal do Rio Grande do Sul; Porto Alegre 91501-970 Brazil
| | - Carlos Pérez Bergmann
- Laboratório de Materiais Cerâmicos; Departamento de Materiais, Universidade Federal do Rio Grande do Sul; Porto Alegre Brazil
| | - Julian Geshev
- Instituto de Física; Universidade Federal do Rio Grande do Sul; Porto Alegre 91501-970 Brazil
| | - Raúl Quijada
- Departamento de Ingeniería Química y Biotecnología; Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile; Santiago Chile
| | - Thuany Maraschin
- Faculdade de Química; Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre 90619-900 Brazil
| | - Nara R. de Souza Basso
- Faculdade de Química; Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre 90619-900 Brazil
| | - Eliana G. Barrera
- Instituto de Química; Universidade Federal do Rio Grande do Sul; Porto Alegre 91501-970 Brazil
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