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Huang J, Zhao Y, Yuan M, Li J, You Z. Improved ammonia synthesis activity of Ce doped barium tantalate supported Ru catalysts. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01902j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Ce doping could increase the specific surface area and reducibility of the barium tantalate carrier, which is beneficial to Ru based ammonia synthesis.
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Affiliation(s)
- Jia Huang
- School of Resources and Environmental Sciences
- Wuhan University
- Wuhan 430079
- P. R. China
- International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei Province
| | - Yushi Zhao
- School of Resources and Environmental Sciences
- Wuhan University
- Wuhan 430079
- P. R. China
- International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei Province
| | - Mingwei Yuan
- School of Resources and Environmental Sciences
- Wuhan University
- Wuhan 430079
- P. R. China
- International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei Province
| | - Jinjun Li
- School of Resources and Environmental Sciences
- Wuhan University
- Wuhan 430079
- P. R. China
| | - Zhixiong You
- School of Resources and Environmental Sciences
- Wuhan University
- Wuhan 430079
- P. R. China
- International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei Province
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2
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Huang J, Yuan M, Li X, Wang Y, Li M, Li J, You Z. Inhibited hydrogen poisoning for enhanced activity of promoters-Ru/Sr2Ta2O7 nanowires for ammonia synthesis. J Catal 2020. [DOI: 10.1016/j.jcat.2020.06.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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3
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Zhang R, Zhao T, Wu M, Jiang H, Zeng L. Mesoporous ultrafine Ta2O5 nanoparticle with abundant oxygen vacancies as a novel and efficient catalyst for non-aqueous Li-O2 batteries. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.03.164] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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4
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García-Márquez A, Glatzel S, Kraupner A, Kiefer K, Siemensmeyer K, Giordano C. Branch-Like Iron Nitride and Carbide Magnetic Fibres Using an Electrospinning Technique. Chemistry 2018; 24:4895-4901. [DOI: 10.1002/chem.201705585] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Alfonso García-Márquez
- Facultad de Química; Universidad Nacional Autónoma de México, Av. Insurgentes Sur 3000; Ciudad Universitaria, C.P. 10200 Mexico City Mexico
| | - Stefan Glatzel
- School of Chemistry; University of Glasgow; Glasgow G12 8QQ UK
| | - Alexander Kraupner
- NanoPETPharma GmbH, Luisencarrée; Robert-Koch-Platz 4 10115 Berlin Germany
| | - Klaus Kiefer
- Helmholtz-Zentrum Berlin für Materialien und Energie; 14109 Berlin Germany
| | | | - Cristina Giordano
- Max Planck Institute of Colloids and Interfaces; Colloid Department; Am Mühlenberg 1 14476 Potsdam Germany
- Current address: School of Biological and Chemical Sciences; Queen Mary University of London; Mile End Road London E1 4NS UK
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Kobayashi Y, Tang Y, Kageyama T, Yamashita H, Masuda N, Hosokawa S, Kageyama H. Titanium-Based Hydrides as Heterogeneous Catalysts for Ammonia Synthesis. J Am Chem Soc 2017; 139:18240-18246. [PMID: 29166007 DOI: 10.1021/jacs.7b08891] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The problem of activating N2 and its subsequent hydrogenation to form NH3 has been approached from many directions. One of these approaches involves the use of transition metal hydride complexes. Recently, transition metal hydride complexes of Ti and Ta have been shown to activate N2, but without catalytic formation of NH3. Here, we show that at elevated temperatures (400 °C, 5 MPa), solid-state hydride-containing Ti compounds (TiH2 and BaTiO2.5H0.5) form a nitride-hydride surface similar to those observed with titanium clusters, but continuously (∼7 days) form NH3 under H2/N2 flow conditions to achieve a catalytic cycle, with activity (up to 2.8 mmol·g·-1·h-1) almost comparable to conventional supported Ru catalysts such as Cs-Ru/MgO or Ru/BaTiO3 that we have tested. As with the homogeneous analogues, the initial presence of hydride within the catalyst is critical. A rare hydrogen-based Mars van Krevelen mechanism may be at play here. Conventional scaling rules of pure metals predict essentially no activity for Ti, making this a previously overlooked element, but our results show that by introducing hydride, the repertoire of heterogeneous catalysts can be expanded to include formerly unexamined compositions without resorting to precious metals.
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Affiliation(s)
- Yoji Kobayashi
- Department of Energy and Hydrocarbon Chemistry, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan.,PRESTO, Japan Science and Technology Agency , Kawaguchi, Saitama 332-0012, Japan
| | - Ya Tang
- Department of Energy and Hydrocarbon Chemistry, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan
| | - Toki Kageyama
- Department of Energy and Hydrocarbon Chemistry, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroki Yamashita
- Department of Energy and Hydrocarbon Chemistry, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan
| | - Naoya Masuda
- Department of Energy and Hydrocarbon Chemistry, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan
| | - Saburo Hosokawa
- Department of Molecular Engineering, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan.,Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroshi Kageyama
- Department of Energy and Hydrocarbon Chemistry, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan.,CREST, Japan Science and Technology Agency , Kawaguchi, Saitama 332-0012, Japan
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An K, Alayoglu S, Musselwhite N, Na K, Somorjai GA. Designed catalysts from Pt nanoparticles supported on macroporous oxides for selective isomerization of n-hexane. J Am Chem Soc 2014; 136:6830-3. [PMID: 24773412 DOI: 10.1021/ja5018656] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Selective isomerization toward branched hydrocarbons is an important catalytic process in oil refining to obtain high-octane gasoline with minimal content of aromatic compounds. Colloidal Pt nanoparticles with controlled sizes of 1.7, 2.7, and 5.5 nm were deposited onto ordered macroporous oxides of SiO2, Al2O3, TiO2, Nb2O5, Ta2O5, and ZrO2 to investigate Pt size- and support-dependent catalytic selectivity in n-hexane isomerization. Among the macroporous oxides, Nb2O5 and Ta2O5 exhibited the highest product selectivity, yielding predominantly branched C6 isomers, including 2- or 3-methylpentane, as desired products of n-hexane isomerization (140 Torr n-hexane and 620 Torr H2 at 360 °C). In situ characterizations including X-ray diffraction and ambient-pressure X-ray photoelectron spectroscopy showed that the crystal structures of the oxides in Pt/oxide catalysts were not changed during the reaction and oxidation states of Nb2O5 were maintained under both H2 and O2 conditions. Fourier transform infrared spectra of pyridine adsorbed on the oxides showed that Lewis sites were the dominant acidic site of the oxides. Macroporous Nb2O5 and Ta2O5 were identified to play key roles in the selective isomerization by charge transfer at Pt-oxide interfaces. The selectivity was revealed to be Pt size-dependent, with improved isomer production as Pt sizes increased from 1.7 to 5.5 nm. When 5.5 nm Pt nanoparticles were supported on Nb2O5 or Ta2O5, the selectivity toward branched C6 isomers was further increased, reaching ca. 97% with a minimum content of benzene, due to the combined effects of the Pt size and the strong metal-support interaction.
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Affiliation(s)
- Kwangjin An
- Department of Chemistry, University of California , Berkeley, California 94720, United States
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Facile surfactant-aided sol–gel synthesis of mesoporous-assembled Ta2O5 nanoparticles with enhanced photocatalytic H2 production. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2013.04.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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8
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Wang Z, Lin J, Wang R, Wei K. Ammonia synthesis over ruthenium catalyst supported on perovskite type BaTiO3. CATAL COMMUN 2013. [DOI: 10.1016/j.catcom.2012.11.024] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Ren Y, Ma Z, Bruce PG. Ordered mesoporous metal oxides: synthesis and applications. Chem Soc Rev 2012; 41:4909-27. [PMID: 22653082 DOI: 10.1039/c2cs35086f] [Citation(s) in RCA: 363] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Great progress has been made in the preparation and application of ordered mesoporous metal oxides during the past decade. However, the applications of these novel and interesting materials have not been reviewed comprehensively in the literature. In the current review we first describe different methods for the preparation of ordered mesoporous metal oxides; we then review their applications in energy conversion and storage, catalysis, sensing, adsorption and separation. The correlations between the textural properties of ordered mesoporous metal oxides and their specific performance are highlighted in different examples, including the rate of Li intercalation, sensing, and the magnetic properties. These results demonstrate that the mesoporosity has a direct impact on the properties and potential applications of such materials. Although the scope of the current review is limited to ordered mesoporous metal oxides, we believe that the information may be useful for those working in a number of fields.
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Affiliation(s)
- Yu Ren
- National Institute of Clean-and-low-carbon Energy, Beijing, 102209, China.
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10
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Fabrication of highly active Sn/W mixed transition-metal oxides as solid acid catalysts. TRANSIT METAL CHEM 2011. [DOI: 10.1007/s11243-011-9465-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Wang C, Zhuang J, Wang G, Chen M, Zhao Y, Zheng X, Zhou M. Tantalum Dioxide Complexes with Dinitrogen. Formation and Characterization of the Side-on and End-on Bonded TaO2(NN)x (x = 1−3) Complexes. J Phys Chem A 2010; 114:8083-9. [DOI: 10.1021/jp103866r] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Caixia Wang
- Department of Chemistry, Zhejiang Sci-Tech University, Hanzhou, China, and Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Jia Zhuang
- Department of Chemistry, Zhejiang Sci-Tech University, Hanzhou, China, and Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Guanjun Wang
- Department of Chemistry, Zhejiang Sci-Tech University, Hanzhou, China, and Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Mohua Chen
- Department of Chemistry, Zhejiang Sci-Tech University, Hanzhou, China, and Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Yanying Zhao
- Department of Chemistry, Zhejiang Sci-Tech University, Hanzhou, China, and Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Xuming Zheng
- Department of Chemistry, Zhejiang Sci-Tech University, Hanzhou, China, and Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Mingfei Zhou
- Department of Chemistry, Zhejiang Sci-Tech University, Hanzhou, China, and Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China
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12
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Rao Y, Antonelli DM. Mesoporous transition metal oxides: characterization and applications in heterogeneous catalysis. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b813533a] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Rao Y, Kemp TF, Trudeau M, Smith ME, Antonelli DM. 17O and 15N Solid State NMR Studies on Ligand-Assisted Templating and Oxygen Coordination in the Walls of Mesoporous Nb, Ta and Ti Oxides. J Am Chem Soc 2008; 130:15726-31. [DOI: 10.1021/ja8056387] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuxiang Rao
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada, Department of Physics, University of Warwick, Coventry, U.K., CV4 7AL, and Emerging Technologies, Hydro-Québec Research Institute, 1800 Boulevard Lionel-Boulet, Varennes, Quebec, Canada J3X 1S1
| | - Tom F. Kemp
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada, Department of Physics, University of Warwick, Coventry, U.K., CV4 7AL, and Emerging Technologies, Hydro-Québec Research Institute, 1800 Boulevard Lionel-Boulet, Varennes, Quebec, Canada J3X 1S1
| | - Michel Trudeau
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada, Department of Physics, University of Warwick, Coventry, U.K., CV4 7AL, and Emerging Technologies, Hydro-Québec Research Institute, 1800 Boulevard Lionel-Boulet, Varennes, Quebec, Canada J3X 1S1
| | - Mark E. Smith
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada, Department of Physics, University of Warwick, Coventry, U.K., CV4 7AL, and Emerging Technologies, Hydro-Québec Research Institute, 1800 Boulevard Lionel-Boulet, Varennes, Quebec, Canada J3X 1S1
| | - Dave M. Antonelli
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada, Department of Physics, University of Warwick, Coventry, U.K., CV4 7AL, and Emerging Technologies, Hydro-Québec Research Institute, 1800 Boulevard Lionel-Boulet, Varennes, Quebec, Canada J3X 1S1
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Kang J, Rao Y, Trudeau M, Antonelli D. Sulfated Mesoporous Tantalum Oxides in the Shape Selective Synthesis of Linear Alkyl Benzene. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800721] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Kang J, Rao Y, Trudeau M, Antonelli D. Sulfated Mesoporous Tantalum Oxides in the Shape Selective Synthesis of Linear Alkyl Benzene. Angew Chem Int Ed Engl 2008; 47:4896-9. [DOI: 10.1002/anie.200800721] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Rao Y, Kang J, Antonelli D. 1-Hexene Isomerization over Sulfated Mesoporous Ta Oxide: The Effects of Active Site and Confinement. J Am Chem Soc 2007; 130:394-5. [DOI: 10.1021/ja076584n] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuxiang Rao
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada
| | - Junjie Kang
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada
| | - David Antonelli
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada
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Ariga K, Vinu A, Hill JP, Mori T. Coordination chemistry and supramolecular chemistry in mesoporous nanospace. Coord Chem Rev 2007. [DOI: 10.1016/j.ccr.2007.02.024] [Citation(s) in RCA: 143] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Yue C, Qiu L, Trudeau M, Antonelli D. Compositional Effects in Ru, Pd, Pt, and Rh-Doped Mesoporous Tantalum Oxide Catalysts for Ammonia Synthesis. Inorg Chem 2007; 46:5084-92. [PMID: 17497850 DOI: 10.1021/ic062385d] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of early metal-promoted Ru-, Pd-, Pt-, and Rh-doped mesoporous tantalum oxide catalysts were synthesized using a variety of dopant ratios and dopant precursors, and the effects of these parameters on the catalytic activity of NH3 synthesis from H2 and N2 were explored. Previous studies on this system supported an unprecedented mechanism in which N-N cleavage occurred at the Ta sites rather than on Ru. The results of the present study showed, for all systems, that Ba is a better promoter than Cs or La and that the nitrate is a superior precursor for Ba than the isopropoxide or the hydroxide. 15N-labeling studies showed that residual nitrate functions as the major ammonia source in the first hour but that it does not account for the ammonia produced after the nitrate is completely consumed. Ru3(CO)12 proved to be a better Ru precursor than RuCl(3).3H2O, and an almost linear increase in activity with increasing Ru loading level was observed at 350 degrees C (623 K). However, at 175 degrees C (448 K), the increase in Ru had no effect on the reaction rate. Pd functioned with comparable rates to Ru, while Pt and Rh functioned far less efficiently. The surprising activities for the Pd-doped catalysts, coupled with XPS evidence for low-valent Ta in this catalyst system, support a mechanism in which cleavage of the N-N triple bond occurs on Ta rather than the precious metal because the Ea value for N-N cleavage on Pd is 2.5 times greater than that for Ru, and the 9.3 kJ mol-1 Ea value measured previously for the Ru system suggests that N-N cleavage cannot occur at the Ru surface.
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Affiliation(s)
- Chaoyang Yue
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada
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Luo X, Killard AJ, Smyth MR. Nanocomposite and Nanoporous Polyaniline Conducting Polymers Exhibit Enhanced Catalysis of Nitrite Reduction. Chemistry 2007; 13:2138-43. [PMID: 17124713 DOI: 10.1002/chem.200601248] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Nanostructured polyaniline (PANI) conducting polymer films were prepared on electrochemically pretreated glassy carbon electrodes, which were previously modified with multilayers of polystyrene (PS) nanoparticles with a diameter of 100 nm. PANI was electropolymerised and grown through the interstitial spaces between the PS nanoparticles, which formed a nanocomposite film of PANI and PS nanoparticles on the electrode surface. Furthermore, a nanoporous PANI film was fabricated through the removal of the PS nanoparticles by dissolution in toluene. As a result of their nanostructure, both of the PANI films (before and after removal of the PS nanoparticles) exhibited enhanced electrocatalytic behaviour towards the reduction of nitrite relative to bulk-PANI films; however, partial collapse or shrinkage may have occurred with the removal of the nanoparticles and could have resulted in a less enhanced response. Under optimised conditions, the nanocomposite-film-modified electrode exhibited a fast response time of 5 s and a linear range from 5.0 x 10(-7) to 1.4 x 10(-3) M for the detection of nitrite; the detection limit was 2.4 x 10(-7) M at a signal-to-noise ratio of 3.
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Affiliation(s)
- Xiliang Luo
- National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland
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