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Du CF, Xue Y, Zeng Q, Wang J, Zhao X, Wang Z, Wang C, Yu H, Liu W. Mo-doped Cr-Ti-Mo ternary o-MAX with ultra-low wear at elevated temperatures. Ann Ital Chir 2022. [DOI: 10.1016/j.jeurceramsoc.2022.09.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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2
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Xue B, Hui L, Yang H, Zhao Y, Hou L, Li W. Immobilization of Ziegler–Natta Catalyst for Ethylene Polymerization on Macropores SiO2 with an Open-Framework Structure. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b03993] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bing Xue
- Department
of Materials-Oriented Chemical Engineering, School of Chemical Engineering, Fuzhou University, Fuzhou, 350100, Fujian P.R. China
- Department
of Polymer Science and Engineering, School of Material Science and
Chemical Engineering, Ningbo University, Ningbo, 315211, Zhejiang P.R. China
| | - Lei Hui
- Department
of Polymer Science and Engineering, School of Material Science and
Chemical Engineering, Ningbo University, Ningbo, 315211, Zhejiang P.R. China
| | - Huaqin Yang
- Department
of Polymer Science and Engineering, School of Material Science and
Chemical Engineering, Ningbo University, Ningbo, 315211, Zhejiang P.R. China
| | - Yulai Zhao
- Department
of Materials-Oriented Chemical Engineering, School of Chemical Engineering, Fuzhou University, Fuzhou, 350100, Fujian P.R. China
| | - Linxi Hou
- Department
of Materials-Oriented Chemical Engineering, School of Chemical Engineering, Fuzhou University, Fuzhou, 350100, Fujian P.R. China
| | - Wei Li
- Department
of Polymer Science and Engineering, School of Material Science and
Chemical Engineering, Ningbo University, Ningbo, 315211, Zhejiang P.R. China
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3
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Bae J, Kim DS, Park E, Park MS, Kim H. TiO2-coated Nonstoichiometric SiOxNanosphere for High Capacity Anode Material for Lithium Ion Batteries. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10817] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Juhye Bae
- Department of Energy Engineering; Hanyang University; Seoul 133-791 Republic of Korea
| | - Dae Sik Kim
- Department of Energy Engineering; Hanyang University; Seoul 133-791 Republic of Korea
| | - Eunjun Park
- Department of Energy Engineering; Hanyang University; Seoul 133-791 Republic of Korea
| | - Min-Sik Park
- Department of Advanced Materials Engineering for Information and Electronics; Kyunghee University; Suwon 446-701 Republic of Korea
| | - Hansu Kim
- Department of Energy Engineering; Hanyang University; Seoul 133-791 Republic of Korea
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4
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Assaud L, Brazeau N, Barr MKS, Hanbücken M, Ntais S, Baranova EA, Santinacci L. Atomic Layer Deposition of Pd Nanoparticles on TiO₂ Nanotubes for Ethanol Electrooxidation: Synthesis and Electrochemical Properties. ACS APPLIED MATERIALS & INTERFACES 2015; 7:24533-42. [PMID: 26477631 DOI: 10.1021/acsami.5b06056] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Palladium nanoparticles are grown on TiO2 nanotubes by atomic layer deposition (ALD), and the resulting three-dimensional nanostructured catalysts are studied for ethanol electrooxidation in alkaline media. The morphology, the crystal structure, and the chemical composition of the Pd particles are fully characterized using scanning and transmission electron microscopies, X-ray diffraction, and X-ray photoelectron spectroscopy. The characterization revealed that the deposition proceeds onto the entire surface of the TiO2 nanotubes leading to the formation of well-defined and highly dispersed Pd nanoparticles. The electrooxidation of ethanol on Pd clusters deposited on TiO2 nanotubes shows not only a direct correlation between the catalytic activity and the particle size but also a steep increase of the response due to the enhancement of the metal-support interaction when the crystal structure of the TiO2 nanotubes is modified by annealing at 450 °C in air.
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Affiliation(s)
- Loïc Assaud
- Aix Marseille Université, CNRS, CINaM UMR 7325, 13288, Marseille, France
| | - Nicolas Brazeau
- Department of Chemical and Biological Engineering, Center for Catalysis Research and Innovation, University of Ottawa , 161 Louis-Pasteur Street, Ottawa, Ontario K1N 6N5, Canada
| | - Maïssa K S Barr
- Aix Marseille Université, CNRS, CINaM UMR 7325, 13288, Marseille, France
| | - Margrit Hanbücken
- Aix Marseille Université, CNRS, CINaM UMR 7325, 13288, Marseille, France
| | - Spyridon Ntais
- Department of Chemical and Biological Engineering, Center for Catalysis Research and Innovation, University of Ottawa , 161 Louis-Pasteur Street, Ottawa, Ontario K1N 6N5, Canada
| | - Elena A Baranova
- Department of Chemical and Biological Engineering, Center for Catalysis Research and Innovation, University of Ottawa , 161 Louis-Pasteur Street, Ottawa, Ontario K1N 6N5, Canada
| | - Lionel Santinacci
- Aix Marseille Université, CNRS, CINaM UMR 7325, 13288, Marseille, France
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5
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Size-dependent activity of Pt/yttria-stabilized zirconia catalyst for ethylene and carbon monoxide oxidation in oxygen-free gas environment. J Catal 2015. [DOI: 10.1016/j.jcat.2015.01.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Groppo E, Gallo E, Seenivasan K, Lomachenko KA, Sommazzi A, Bordiga S, Glatzel P, van Silfhout R, Kachatkou A, Bras W, Lamberti C. XAS and XES Techniques Shed Light on the Dark Side of Ziegler-Natta Catalysts: Active-Site Generation. ChemCatChem 2015. [DOI: 10.1002/cctc.201402989] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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7
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Effect of TiO2 promotion on the structure and performance of silica-supported cobalt-based catalysts for Fischer–Tropsch synthesis. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.03.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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8
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Electrochemical behavior of silver thin films interfaced with yttria-stabilized zirconia. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-014-2477-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Ethylene polymerization on polymer supported Ziegler-Natta catalyst. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-012-9892-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Ajami E, Aguey-Zinsou KF. Calcium phosphate growth at electropolished titanium surfaces. J Funct Biomater 2012; 3:327-48. [PMID: 24955535 PMCID: PMC4047935 DOI: 10.3390/jfb3020327] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 03/21/2012] [Accepted: 04/11/2012] [Indexed: 11/16/2022] Open
Abstract
This work investigated the ability of electropolished Ti surface to induce Hydroxyapatite (HA) nucleation and growth in vitro via a biomimetic method in Simulated Body Fluid (SBF). The HA induction ability of Ti surface upon electropolishing was compared to that of Ti substrates modified with common chemical methods including alkali, acidic and hydrogen peroxide treatments. Our results revealed the excellent ability of electropolished Ti surfaces in inducing the formation of bone-like HA at the Ti/SBF interface. The chemical composition, crystallinity and thickness of the HA coating obtained on the electropolished Ti surface was found to be comparable to that achieved on the surface of alkali treated Ti substrate, one of the most effective and popular chemical treatments. The surface characteristics of electropolished Ti contributing to HA growth were discussed thoroughly.
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Affiliation(s)
- Elnaz Ajami
- School of Engineering and Materials Science, University of London, Queen Mary, London E1 4NS, UK.
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11
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Karakalos S, Siokou A, Sutara F, Skala T, Vitaliy F, Ladas S, Prince K, Matolin V, Chab V. The interfacial properties of MgCl(2) thin films grown on Ti(0001). J Chem Phys 2010; 133:074701. [PMID: 20726657 DOI: 10.1063/1.3473933] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Photoelectron spectroscopy with synchrotron radiation (SRPES), temperature programmed desorption (TPD), low energy electron diffraction (LEED), and ion-scattering spectroscopy (ISS) were used in order to study the MgCl(2)/Ti(0001) interface. A clear hexagonal LEED pattern confirmed the presence of a quite large grain of Ti(0001) on the substrate while no new superstructure was formed after deposition of MgCl(2) either at room or at elevated temperatures. A series of high resolution spectra after step by step MgCl(2) deposition and gradual annealing indicated strong interaction between MgCl(2) and the substrate while ISS measurements showed that there is no migration of Ti atoms into the deposit layers. Additional quantities of deposited MgCl(2) grew stoichimetrically on top of the chemically active interface. Annealing at approximately 350 degrees C caused clustering of the MgCl(2) multilayer and TPD results showed that they desorbed stoichimetrically at temperatures between 360 and 380 degrees C. The interfacial TiCl(x)Mg(y) species dissociated by the disruption of the Cl-Mg bonds at temperatures higher than 400 degrees C and metallic Mg evaporated. The Cl atoms remained attached on the Ti surface but they did not form any ordered structure even after annealing at 730 degrees C. The present results indicate the occurrence of charge transfer at the Ti/MgCl(2) interface through the Cl ligands and provide valuable information for catalyst design.
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Affiliation(s)
- S Karakalos
- FORTH/ICE-HT, P.O. Box 1414, Rion, Patras GR-26504, Greece.
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12
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Mani G, Johnson DM, Marton D, Dougherty VL, Feldman MD, Patel D, Ayon AA, Agrawal CM. Stability of self-assembled monolayers on titanium and gold. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:6774-6784. [PMID: 18512878 DOI: 10.1021/la8003646] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Methyl- and hydroxyl-terminated phosphonic acid self-assembled monolayers (SAMs) were coated on Ti from aqueous solution. Dodecyl phosphate and dodecyltrichlorosilane SAMs were also coated on Ti using solution-phase deposition. The stability of SAMs on Ti was investigated in Tris-buffered saline (TBS) at 37 degrees C using X-ray photoelectron spectroscopy, contact angle goniometry, and atomic force microscopy. For comparison purposes, a hydroxyl-terminated thiol SAM was coated on Au, and its stability was also investigated under similar conditions. In TBS, a significant proportion of phosphonic acid or phosphate molecules were desorbed from the Ti surface within 1 day, while the trichlorosilane SAM on Ti or thiol SAM on Au was stable for up to 7 days under similar conditions. The stability of hydroxyl-terminated phosphonic acid SAM coated Ti and thiol SAM coated Au was investigated in ambient air and ultraviolet (UV) light. In ambient air, the phosphonic acid SAM on Ti was stable for up to 14 days, while the thiol SAM on Au was not stable for 1 day. Under UV-radiation exposure, the alkyl chains of the phosphonic acid SAM were decomposed, leaving only the phosphonate groups on the Ti surface after 12 h. Under similar conditions, decomposition of alkyl chains of the thiol SAM was observed on the Au surface accompanied by oxidation of thiolates.
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Affiliation(s)
- Gopinath Mani
- Department of Biomedical Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA
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13
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Barden WRT, Singh S, Kruse P. Roughening of gold atomic steps induced by interaction with tetrahydrofuran. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:2452-2458. [PMID: 18257587 DOI: 10.1021/la701757e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Exposure of a clean gold surface to tetrahydrofuran (THF) under ambient conditions was observed to cause roughening of atomic step edges. This change was followed in situ using a scanning tunneling microscope during the exposure of a gold surface to a controlled stream of THF vapor. THF is a common solvent used in depositing molecules, self-assembled monolayers, and polymer films on surfaces, in electrochemistry, and in chemical reactions. Unlike other solvents, such as methanol, ethanol and diethyl ether, however, we found that THF itself has a profound effect on the surface morphology that needs to be taken into account when reporting on the interactions of solutes with a gold surface. At the same time, this finding may present new opportunities in catalysis or nanostructuring of surfaces.
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Affiliation(s)
- Warren R T Barden
- Department of Chemistry, McMaster University, 1280 Main St. W., Hamilton, Ontario, L8S 4M1, Canada
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Kim P, Kim H, Joo JB, Kim W, Song IK, Yi J. Effect of nickel precursor on the catalytic performance of Ni/Al2O3 catalysts in the hydrodechlorination of 1,1,2-trichloroethane. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.molcata.2006.04.061] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Ntais S, Siokou A. An XPS investigation of the interaction mechanism between AlEt3 and TiCl4 supported on sputtered native SiOx layer. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.molcata.2005.09.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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