1
|
Tiwari G, Rekha Devi R, Mahanta SP, Raul PK, Chatterjee S, Vrat Kamboj D. Copper oxide nanoparticles modified activated carbon nanocomposite towards removal of tetracycline from waste water. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
|
2
|
Synthesis of nanostructured BaTiO3 films by hydrothermal modification of Ti surfaces using Ba(OH)2 and oleic acid. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
3
|
The Promoting Effect of Ti on the Catalytic Performance of V-Ti-HMS Catalysts in the Selective Oxidation of Methanol. Catalysts 2022. [DOI: 10.3390/catal12080869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The effects of Ti modification on the structural properties and catalytic performance of vanadia on hexagonal mesoporous silica (V-HMS) catalysts are studied for selective methanol-to-dimethoxymethane oxidation. Characterizations including N2 adsorption–desorption (SBET), X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS UV-Vis), Micro-Raman spectroscopy, FTIR spectroscopy, and H2 temperature-programmed reduction (H2-TPR) were carried out to investigate the property and structure of the catalysts. The results show that Ti can be successfully incorporated into the HMS framework in a wide range of Si/Ti ratios from 50 to 10. Ti modification can effectively improve the distribution of vanadium species and thus enhance the overall redox properties and catalytic performance of the catalysts. The catalytic activity of the V-Ti-HMS catalysts with the Si/Ti ratio of 30 is approximately two times higher than that of V-HMS catalysts with comparable selectivity. The enhanced activity exhibited by the V-Ti-HMS catalyst is attributed to the improved dispersion and reducibility of vanadium oxides.
Collapse
|
4
|
Mechanism on the Separation of Vanadium and Titanium from Vanadium Slag by Roasting with Ammonium Sulfate. SEPARATIONS 2022. [DOI: 10.3390/separations9080196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The technology of simultaneously recovering V and Ti from vanadium slag via ammonium salt roasting has proven to be an efficient route. However, due to the phase stability and complex chemical composition of vanadium slag, intermediate materials containing Fe, V, Ti and Mn are difficult to be characterized critically. This work aims to investigate the decomposition and transformation of vanadium slag during ammonium salt roasting, using a combination of FT-IR, XRD, XPS and SEM techniques. It was found that the lattice structure of Fe-contained spinel would be transformed from FeV2O4 to Fe2+VnFe2−nO4 (0 < n < 2) during directly roasting in the air. However, there is no obvious change for Ti-contained and Mn-contained spinel. Using NH4HSO4 (ABS) as an additive and roasting the slag in the N2 atmosphere, those spinels would be decomposed into various sulfate salts. Meanwhile, when the slag was roasted with NH4HSO4 in the air, a part of Fe(II) in (NH4)2Fe(SO4)2 would be transferred into Fe(III), but V(III), Ti(IV) and Mn(II) from those salts would remain the same valance state. Ultimately, about 88% V and 81% Ti were recovered, when vanadium slag was roasted at 663.15 K with a 1:5 ratio of slag-to-NH4HSO4 and followed by 8 vol.% H2SO4 leaching.
Collapse
|
5
|
Al-Fatesh AS, Kumar R, Kasim SO, Ibrahim AA, Fakeeha AH, Abasaeed AE, Alrasheed R, Bagabas A, Chaudhary ML, Frusteri F, Chowdhury B. The effect of modifier identity on the performance of Ni-based catalyst supported on γ-Al2O3 in dry reforming of methane. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.09.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
6
|
Rochard G, Ciotonea C, Ungureanu A, Giraudon J, Royer S, Lamonier J. MnO
x
‐loaded Mesoporous Silica for the Catalytic Oxidation of Formaldehyde. Effect of the Melt Infiltration Conditions on the Activity – Stability Behavior. ChemCatChem 2020. [DOI: 10.1002/cctc.201901902] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Guillaume Rochard
- Univ. Lille, CNRS, ENSCL, Centrale Lille, Univ. Artois, UMR 8181 – UCCS –Unité de Catalyse et Chimie du Solide 59000 Lille France
| | - Carmen Ciotonea
- Univ. Lille, CNRS, ENSCL, Centrale Lille, Univ. Artois, UMR 8181 – UCCS –Unité de Catalyse et Chimie du Solide 59000 Lille France
| | - Adrian Ungureanu
- “Gheorghe Asachi” Technical University of IasiFaculty of Chemical Engineering and Environmental Protection 73 D. Mangeron Bvd. 700050 Iasi Romania
| | - Jean‐Marc Giraudon
- Univ. Lille, CNRS, ENSCL, Centrale Lille, Univ. Artois, UMR 8181 – UCCS –Unité de Catalyse et Chimie du Solide 59000 Lille France
| | - Sébastien Royer
- Univ. Lille, CNRS, ENSCL, Centrale Lille, Univ. Artois, UMR 8181 – UCCS –Unité de Catalyse et Chimie du Solide 59000 Lille France
| | - Jean‐François Lamonier
- Univ. Lille, CNRS, ENSCL, Centrale Lille, Univ. Artois, UMR 8181 – UCCS –Unité de Catalyse et Chimie du Solide 59000 Lille France
| |
Collapse
|
7
|
Wang Z, Kong D, Wang M, Wang G, Li N, Li D. Sealing effect of surface porosity of Ti-P composite films on tinplates. RSC Adv 2019; 9:12990-12997. [PMID: 35520766 PMCID: PMC9063787 DOI: 10.1039/c8ra10523e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 04/22/2019] [Indexed: 11/21/2022] Open
Abstract
A novel chrome-free Ti–P composite film was prepared by casting a mixed solution containing titanium and phosphorus species, which is able to seal the pores on the tinplate surface. The obtained film was characterized using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). The surface porosity sealing effect on tinplates was verified by using a glow discharge spectrometer (GDS), porosity tests, and XPS. The results show that the film on the tinplates is composed of TiO2, Ti3(PO4)4·nH2O, and FePO4. Micropores on the tinplates are reduced apparently after film deposition, and the content of iron exposed in the pores is decreased significantly. An obvious concentration peak of phosphorus at a depth of around 0.75 μm infers that the film can penetrate into the micro-pores. The film lead to a 42.5% decrease in the surface porosity of the tinplates, exhibiting an outstanding surface porosity sealing effect in comparison with pure Ti or P films. Mechanistic analysis using XPS indicates that Ti3(PO4)4·nH2O and FePO4 in the film play a role in sealing the surface porosity. A novel chrome-free Ti–P composite film was coated on tinplates to seal the pores on the tinplate surface.![]()
Collapse
Affiliation(s)
- Ziyu Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin 150001 China
| | - Delong Kong
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin 150001 China
| | - Minghao Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin 150001 China
| | - Guixiang Wang
- College of Materials Science and Chemical Engineering, Harbin Engineering University Harbin 150001 China
| | - Ning Li
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin 150001 China
| | - Deyu Li
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin 150001 China
| |
Collapse
|
8
|
De Clercq R, Dusselier M, Poleunis C, Debecker DP, Giebeler L, Oswald S, Makshina E, Sels BF. Titania-Silica Catalysts for Lactide Production from Renewable Alkyl Lactates: Structure–Activity Relations. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02216] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rik De Clercq
- Centre for Surface Chemistry and Catalysis, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Michiel Dusselier
- Centre for Surface Chemistry and Catalysis, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Claude Poleunis
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Place Louis Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Damien P. Debecker
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Place Louis Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Lars Giebeler
- Leibniz-Institute for Solid State and Materials Research (IFW) Dresden e.V., Helmholtzstraße 20, D-01069 Dresden, Germany
| | - Steffen Oswald
- Leibniz-Institute for Solid State and Materials Research (IFW) Dresden e.V., Helmholtzstraße 20, D-01069 Dresden, Germany
| | - Ekaterina Makshina
- Centre for Surface Chemistry and Catalysis, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Bert F. Sels
- Centre for Surface Chemistry and Catalysis, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| |
Collapse
|
9
|
Abdel-Mageed AM, Widmann D, Olesen SE, Chorkendorff I, Behm RJ. Selective CO Methanation on Highly Active Ru/TiO2 Catalysts: Identifying the Physical Origin of the Observed Activation/Deactivation and Loss in Selectivity. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00384] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ali M. Abdel-Mageed
- Institute of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm, Germany
| | - Daniel Widmann
- Institute of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm, Germany
| | - Sine E. Olesen
- Department of Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark
| | - Ib Chorkendorff
- Department of Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark
| | - R. Jürgen Behm
- Institute of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm, Germany
| |
Collapse
|
10
|
The Effect of Film Thickness on the Gas Sensing Properties of Ultra-Thin TiO₂ Films Deposited by Atomic Layer Deposition. SENSORS 2018; 18:s18030735. [PMID: 29494504 PMCID: PMC5876708 DOI: 10.3390/s18030735] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 02/20/2018] [Accepted: 02/20/2018] [Indexed: 11/26/2022]
Abstract
Analyte sensitivity for gas sensors based on semiconducting metal oxides should be highly dependent on the film thickness, particularly when that thickness is on the order of the Debye length. This thickness dependence has previously been demonstrated for SnO2 and inferred for TiO2. In this paper, TiO2 thin films have been prepared by Atomic Layer Deposition (ALD) using titanium isopropoxide and water as precursors. The deposition process was performed on standard alumina gas sensor platforms and microscope slides (for analysis purposes), at a temperature of 200 °C. The TiO2 films were exposed to different concentrations of CO, CH4, NO2, NH3 and SO2 to evaluate their gas sensitivities. These experiments showed that the TiO2 film thickness played a dominant role within the conduction mechanism and the pattern of response for the electrical resistance towards CH4 and NH3 exposure indicated typical n-type semiconducting behavior. The effect of relative humidity on the gas sensitivity has also been demonstrated.
Collapse
|
11
|
De Clercq R, Dusselier M, Makshina E, Sels BF. Catalytic Gas-Phase Production of Lactide from Renewable Alkyl Lactates. Angew Chem Int Ed Engl 2018; 57:3074-3078. [DOI: 10.1002/anie.201711446] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 12/27/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Rik De Clercq
- Centre for Surface Chemistry and Catalysis; KU Leuven; Celestijnenlaan 200F 3001 Heverlee Belgium
| | - Michiel Dusselier
- Centre for Surface Chemistry and Catalysis; KU Leuven; Celestijnenlaan 200F 3001 Heverlee Belgium
| | - Ekaterina Makshina
- Centre for Surface Chemistry and Catalysis; KU Leuven; Celestijnenlaan 200F 3001 Heverlee Belgium
| | - Bert F. Sels
- Centre for Surface Chemistry and Catalysis; KU Leuven; Celestijnenlaan 200F 3001 Heverlee Belgium
| |
Collapse
|
12
|
De Clercq R, Dusselier M, Makshina E, Sels BF. Catalytic Gas-Phase Production of Lactide from Renewable Alkyl Lactates. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711446] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rik De Clercq
- Centre for Surface Chemistry and Catalysis; KU Leuven; Celestijnenlaan 200F 3001 Heverlee Belgium
| | - Michiel Dusselier
- Centre for Surface Chemistry and Catalysis; KU Leuven; Celestijnenlaan 200F 3001 Heverlee Belgium
| | - Ekaterina Makshina
- Centre for Surface Chemistry and Catalysis; KU Leuven; Celestijnenlaan 200F 3001 Heverlee Belgium
| | - Bert F. Sels
- Centre for Surface Chemistry and Catalysis; KU Leuven; Celestijnenlaan 200F 3001 Heverlee Belgium
| |
Collapse
|
13
|
Kosmulski M, Mączka E. Modification of SBA-15 with vapors of aluminum and titanium chlorides. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.09.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
14
|
Yu X, Zhao Z, Wei Y, Liu J. Ordered micro/macro porous K-OMS-2/SiO 2 nanocatalysts: Facile synthesis, low cost and high catalytic activity for diesel soot combustion. Sci Rep 2017; 7:43894. [PMID: 28443610 PMCID: PMC5405416 DOI: 10.1038/srep43894] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 01/30/2017] [Indexed: 02/04/2023] Open
Abstract
A series of novel oxide catalysts, which contain three-dimensionally ordered macroporous (3DOM) and microporous structure, were firstly designed and successfully synthesized by simple method. In the as-prepared catalysts, 3DOM SiO2 is used as support and microporous K-OMS-2 oxide nanoparticles are supported on the wall of SiO2. 3DOM K-OMS-2/SiO2 oxide catalysts were firstly used in soot particle oxidation reaction and they show very high catalytic activities. The high activities of K-OMS-2/SiO2 oxide catalysts can be assigned to three possible reasons: macroporous effect of 3DOM structure for improving contact between soot and catalyst, microporous effect of K-OMS-2 for adsorption of small gas molecules and interaction of K and Mn for activation of gas molecules. The catalytic activities of catalysts are comparable to or even higher than noble metal catalyst in the medium and high temperature range. For example, the T50 of K-OMS-2/SiO2-50, 328 °C, is much lower than those of Pt/Al2O3 and 3DOM Au/LaFeO3, 464 and 356 °C,respectively. Moreover, catalysts exhibited high catalytic stability. It is attributed to that the K+ ions are introduced into the microporous structure of OMS-2 and stabilized in the catalytic reaction. Meanwhile, the K+ ions play an important role in templating and stabilizing the tunneled framework of OMS-2.
Collapse
Affiliation(s)
- Xuehua Yu
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning, 110034, China
| | - Zhen Zhao
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning, 110034, China
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, 18# Fuxue Road, Chang Ping, Beijing 102249, China
| | - Yuechang Wei
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, 18# Fuxue Road, Chang Ping, Beijing 102249, China
| | - Jian Liu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, 18# Fuxue Road, Chang Ping, Beijing 102249, China
| |
Collapse
|
15
|
Medvedev A, Neumann A, Ng H, Lapovok R, Kasper C, Lowe T, Anumalasetty V, Estrin Y. Combined effect of grain refinement and surface modification of pure titanium on the attachment of mesenchymal stem cells and osteoblast-like SaOS-2 cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:483-497. [DOI: 10.1016/j.msec.2016.10.035] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 09/17/2016] [Accepted: 10/18/2016] [Indexed: 01/17/2023]
|
16
|
Thickness Influence on In Vitro Biocompatibility of Titanium Nitride Thin Films Synthesized by Pulsed Laser Deposition. MATERIALS 2016; 9:ma9010038. [PMID: 28787846 PMCID: PMC5456537 DOI: 10.3390/ma9010038] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 12/23/2015] [Accepted: 01/06/2016] [Indexed: 11/17/2022]
Abstract
We report a study on the biocompatibility vs. thickness in the case of titanium nitride (TiN) films synthesized on 410 medical grade stainless steel substrates by pulsed laser deposition. The films were grown in a nitrogen atmosphere, and their in vitro cytotoxicity was assessed according to ISO 10993-5 [1]. Extensive physical-chemical analyses have been carried out on the deposited structures with various thicknesses in order to explain the differences in biological behavior: profilometry, scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction and surface energy measurements. XPS revealed the presence of titanium oxynitride beside TiN in amounts that vary with the film thickness. The cytocompatibility of films seems to be influenced by their TiN surface content. The thinner films seem to be more suitable for medical applications, due to the combined high values of bonding strength and superior cytocompatibility.
Collapse
|
17
|
Asatryan R, Ruckenstein E. Effect of “Reducible” Titania Promotion on the Mechanism of H-Migration in Pd/SiO2 Clusters. Catal Letters 2015. [DOI: 10.1007/s10562-015-1642-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
18
|
Nguyen VH, Lin SD, Wu JCS. Synergetic photo-epoxidation of propylene over V Ti/MCM-41 mesoporous photocatalysts. J Catal 2015. [DOI: 10.1016/j.jcat.2015.09.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
19
|
Abdel-Mageed AM, Widmann D, Olesen SE, Chorkendorff I, Biskupek J, Behm RJ. Selective CO Methanation on Ru/TiO2 Catalysts: Role and Influence of Metal–Support Interactions. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01520] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ali M. Abdel-Mageed
- Institute
of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm, Germany
| | - D. Widmann
- Institute
of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm, Germany
| | - S. E. Olesen
- Department
of Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark
| | - I. Chorkendorff
- Department
of Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark
| | - J. Biskupek
- Central
Facility of Electron Microscopy, Ulm University, D-89069 Ulm, Germany
| | - R. J. Behm
- Institute
of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm, Germany
| |
Collapse
|
20
|
Real-Time Raman Monitoring during Photocatalytic Epoxidation of Cyclohexene over V-Ti/MCM-41 Catalysts. Catalysts 2015. [DOI: 10.3390/catal5020518] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
21
|
Puértolas B, Mayoral Á, Arenal R, Solsona B, Moragues A, Murcia-Mascaros S, Amorós P, Hungría AB, Taylor SH, García T. High-Temperature Stable Gold Nanoparticle Catalysts for Application under Severe Conditions: The Role of TiO2 Nanodomains in Structure and Activity. ACS Catal 2015. [DOI: 10.1021/cs501741u] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Begoña Puértolas
- Instituto de Carboquı́mica
(ICB-CSIC), C/ Miguel Luesma Castán
4, 50018 Zaragoza, Spain
| | - Álvaro Mayoral
- Laboratorio
de Microscopias Avanzadas (LMA), Instituto de Nanociencia de Aragon
(INA), Universidad de Zaragoza, Mariano Esquillor, 50018 Zaragoza, Spain
| | - Raul Arenal
- Laboratorio
de Microscopias Avanzadas (LMA), Instituto de Nanociencia de Aragon
(INA), Universidad de Zaragoza, Mariano Esquillor, 50018 Zaragoza, Spain
- Fundación
Agencia Aragonesa para la Investigación y el Desarrollo (ARAID), Marı́a de Luna 11, 50018 Zaragoza, Spain
| | - Benjamín Solsona
- Departamento
de Ingenieria Quimica, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, Spain
| | - Alaina Moragues
- Instituto de Ciencia de los Materiales, Universitat de València, P.O. Box 22085, 46071 Valencia, Spain
| | - Sonia Murcia-Mascaros
- Instituto de Ciencia de los Materiales, Universitat de València, P.O. Box 22085, 46071 Valencia, Spain
| | - Pedro Amorós
- Instituto de Ciencia de los Materiales, Universitat de València, P.O. Box 22085, 46071 Valencia, Spain
| | - Ana B. Hungría
- Departamento
de Ciencia de Materiales, Ingeniería Metalúrgica y Quı́mica
Inorgánica, Universidad de Cádiz, Campus Río San Pedro, 11510 Puerto Real, Spain
| | - Stuart H. Taylor
- Cardiff
Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, CF10 3AT Cardiff, United Kingdom
| | - Tomás García
- Instituto de Carboquı́mica
(ICB-CSIC), C/ Miguel Luesma Castán
4, 50018 Zaragoza, Spain
| |
Collapse
|
22
|
Wu H, Yang Y, Suo H, Qing M, Yan L, Wu B, Xu J, Xiang H, Li Y. Effects of ZrO 2 promoter on physic-chemical properties and activity of Co/TiO 2 –SiO 2 Fischer–Tropsch catalysts. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2014.09.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
23
|
Sathasivam S, Bhachu DS, Lu Y, Bawaked SM, Obaid AY, Al-Thabaiti S, Basahel SN, Carmalt CJ, Parkin IP. Highly Photocatalytically Active Iron(III) Titanium Oxide Thin films via Aerosol-Assisted CVD. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/cvde.201407143] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sanjayan Sathasivam
- Materials Chemistry Centre, Department of Chemistry; University College London; 20 Gordon Street London WC1H 0AJ UK
- Bio Nano Consulting Ltd; 338 Euston Road London UK
| | - Davinder S. Bhachu
- Materials Chemistry Centre, Department of Chemistry; University College London; 20 Gordon Street London WC1H 0AJ UK
| | - Yao Lu
- Materials Chemistry Centre, Department of Chemistry; University College London; 20 Gordon Street London WC1H 0AJ UK
| | - Salem M. Bawaked
- Chemistry Department; King Abdulaziz University; P.O. Box 80200 Jeddah Saudi Arabia
| | - Abdullah Y. Obaid
- Chemistry Department; King Abdulaziz University; P.O. Box 80200 Jeddah Saudi Arabia
| | - Shaeel Al-Thabaiti
- Chemistry Department; King Abdulaziz University; P.O. Box 80200 Jeddah Saudi Arabia
| | - Sulaiman N. Basahel
- Chemistry Department; King Abdulaziz University; P.O. Box 80200 Jeddah Saudi Arabia
| | - Claire J. Carmalt
- Materials Chemistry Centre, Department of Chemistry; University College London; 20 Gordon Street London WC1H 0AJ UK
| | - Ivan P. Parkin
- Materials Chemistry Centre, Department of Chemistry; University College London; 20 Gordon Street London WC1H 0AJ UK
| |
Collapse
|
24
|
Chenakin S, Melaet G, Szukiewicz R, Kruse N. XPS study of the surface chemical state of a Pd/(SiO2+TiO2) catalyst after methane oxidation and SO2 treatment. J Catal 2014. [DOI: 10.1016/j.jcat.2014.01.008] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
25
|
Kim JY, Kim YH, Han S, Choi SH, Lee JS. Photocatalytic synthesis of oxygenated hydrocarbons from diesel fuel for mobile deNOx application. J Catal 2013. [DOI: 10.1016/j.jcat.2013.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
26
|
Sannino D, Vaiano V, Ciambelli P, Carotenuto G, Di Serio M, Santacesaria E. Enhanced performances of grafted VOx on titania/silica for the selective photocatalytic oxidation of ethanol to acetaldehyde. Catal Today 2013. [DOI: 10.1016/j.cattod.2012.12.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
27
|
Bao N, Wei Z, Ma Z, Liu F, Yin G. Si-doped mesoporous TiO2 continuous fibers: preparation by centrifugal spinning and photocatalytic properties. JOURNAL OF HAZARDOUS MATERIALS 2010; 174:129-136. [PMID: 19796875 DOI: 10.1016/j.jhazmat.2009.09.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2009] [Revised: 07/09/2009] [Accepted: 09/07/2009] [Indexed: 05/27/2023]
Abstract
TiO(2) continuous fibers were prepared by a sol-gel method combined with centrifugal spinning without any template or binder polymer. The fibers were characterized using XRD, FT-IR, SEM, N(2) adsorption-desorption, and UV-vis DRS. The addition of silica was a crucial factor for obtaining long fibers because of the formation of Ti-O-Si networks. The effects of dopant contents and heat treatment temperatures were studied. It was found that the proper addition of silica into titania could improve the surface texture and enhance the thermal stability and crystal stability. When Si/Ti molar ratio was 0.15, mesoporous TiO(2) fibers with a BET surface area up to 127.7 m(2)g(-1) were obtained after heat treatment at 700 degrees C. It displayed the highest photoactivity of all, and the degradation rate of X-3B in aqueous solution reached 99.6% after 75 min under UV irradiation. Furthermore, the degradation rate and the mineralization rate of X-3B were 94.7% and 58.9% after 3h under solar irradiation, respectively. In addition, it was worthwhile to mention that the degradation efficiency was also more than 90% after 6 cycles.
Collapse
Affiliation(s)
- Nan Bao
- School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, PR China.
| | | | | | | | | |
Collapse
|
28
|
WANG L, WANG H, WANG A, LIU M. Surface Modification of a Magnetic SiO2 Support and Immobilization of a Nano-TiO2 Photocatalyst on It. CHINESE JOURNAL OF CATALYSIS 2009. [DOI: 10.1016/s1872-2067(08)60132-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
29
|
Yang X, Ma X, Wang S, Gong J. Transesterification of dimethyl oxalate with phenol over TiO2/SiO2: Catalyst screening and reaction optimization. AIChE J 2008. [DOI: 10.1002/aic.11613] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
30
|
Giraudon JM, Nguyen T, Leclercq G, Siffert S, Lamonier JF, Aboukaïs A, Vantomme A, Su BL. Chlorobenzene total oxidation over palladium supported on ZrO2, TiO2 nanostructured supports. Catal Today 2008. [DOI: 10.1016/j.cattod.2008.02.019] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
31
|
Grzechowiak J, Szyszka I, Masalska A. Effect of TiO2 content and method of titania–silica preparation on the nature of oxidic nickel phases and their activity in aromatic hydrogenation. Catal Today 2008. [DOI: 10.1016/j.cattod.2008.03.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
32
|
Rojas H, Borda G, Martínez J, Valencia J, Reyes P. Liquid phase hydrogenation of citral and intermediaries over Ir/TiO2/SiO2 catalysts: Kinetic study. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcata.2008.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
33
|
Maroneze CM, Arenas LT, Luz RC, Benvenutti EV, Landers R, Gushikem Y. Meldola blue immobilized on a new SiO2/TiO2/graphite composite for electrocatalytic oxidation of NADH. Electrochim Acta 2008. [DOI: 10.1016/j.electacta.2007.12.072] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
34
|
|
35
|
Affiliation(s)
- Nageswara N. Rao
- Wastewater Technology Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India
| | - Vibha Chaturvedi
- Wastewater Technology Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India
| |
Collapse
|
36
|
Preparation, characterization and catalytic performances of highly dispersed supported TiO2/SiO2 catalysts in biodiesel production. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/s0167-2991(06)80920-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
|
37
|
López-Muñoz MJ, Grieken RV, Aguado J, Marugán J. Role of the support on the activity of silica-supported TiO2 photocatalysts: Structure of the TiO2/SBA-15 photocatalysts. Catal Today 2005. [DOI: 10.1016/j.cattod.2005.03.017] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
38
|
Ntais S, Dracopoulos V, Siokou A. TiCl4(THF)2 impregnation on a flat SiOx/Si(100) and on polycrystalline Au foil: determination of surface species using XPS. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.molcata.2004.05.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
39
|
Stangland EE, Taylor B, Andres RP, Delgass WN. Direct Vapor Phase Propylene Epoxidation over Deposition-Precipitation Gold-Titania Catalysts in the Presence of H2/O2: Effects of Support, Neutralizing Agent, and Pretreatment. J Phys Chem B 2004; 109:2321-30. [PMID: 16851226 DOI: 10.1021/jp048869h] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The effects of titanium connectivity, deposition solution neutralizing agent, and catalyst pretreatment were examined for a series of Au-on-titanium-containing supports for the direct gas-phase epoxidation of propylene using hydrogen and oxygen. The degree of titanium isolation was examined using pure titania, monolayer-titania on silica, submonolayer-titania on silica, and titanium silicalite-1 (TS-1) supports. Activity and selectivity were shown to increase as the degree of titanium isolation increased, with TS-1 and submonolayer-titania supports providing the best stability and yield. Isolation of the titanium was found to significantly reduce the cracking of propylene to ethanal and carbon dioxide. Sodium carbonate was found to be the best neutralizing agent for catalysts prepared using deposition-precipitation (DP). DP with ammonium hydroxide gave catalysts with reduced selectivity and activity. Titania-modified silica was found to produce better catalysts when the support was not calcined prior to gold deposition. Similarly, calcination was detrimental to catalysts prepared via deposition of a 2 nm gold colloid onto titania-modified supports even though the gold did not sinter. The beneficial effects of Ti site isolation and support acid/base control are best seen at higher temperatures, where only a few catalysts can maintain selectivity.
Collapse
Affiliation(s)
- Eric E Stangland
- Forney Hall of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907-2100, USA
| | | | | | | |
Collapse
|
40
|
|
41
|
Shido T, Okita G, Asakura K, Iwasawa Y. Preparation, Characterization, and Catalytic Performance of Bismuth−Aluminum Binary-Oxide Layers and Clusters on an Al2O3 Surface. J Phys Chem B 2000. [DOI: 10.1021/jp0021650] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- T. Shido
- Department of Chemistry, Graduate School of Science, the University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - G. Okita
- Department of Chemistry, Graduate School of Science, the University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - K. Asakura
- Department of Chemistry, Graduate School of Science, the University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Y. Iwasawa
- Department of Chemistry, Graduate School of Science, the University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| |
Collapse
|
42
|
Kim WB, Choi SH, Lee JS. Quantitative Analysis of Ti−O−Si and Ti−O−Ti Bonds in Ti−Si Binary Oxides by the Linear Combination of XANES. J Phys Chem B 2000. [DOI: 10.1021/jp000042+] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
43
|
DUSI MARCO, MALLAT TAMAS, BAIKER ALFONS. EPOXIDATION OF FUNCTIONALIZED OLEFINS OVER SOLID CATALYSTS. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2000. [DOI: 10.1081/cr-100100262] [Citation(s) in RCA: 128] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
44
|
|
45
|
Keränen J, Iiskola E, Guimon C, Auroux A, Niinistö L. Controlled coating of high surface area silica with titania overlayers by atomic layer deposition. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s0167-2991(00)80721-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
|
46
|
Li Y, Ren YZ, Jin J, Chen X, Li TJ, Li YZ, Hou LT. Self-Assembled Monolayer and Multilayer of Trichlorogermane Hexyl Propylate and Formation of GeO(2)/SiO(2) Interface. J Colloid Interface Sci 1999; 218:578-581. [PMID: 10502391 DOI: 10.1006/jcis.1999.6436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Monolayer and multilayer films of trichlorogermane hexyl propylate (Ge6) were formed by the self-assembly method on hydroxylated silicon substrates. The results showed that this kind of trichlorogermane had virtually the same self-assembly behavior as trichlorosilanes. Ellipsometry proved that the self-assembled monolayers and multilayers (SAMs) of Ge6 exhibited a tilted orientation to the substrate surface. The multilayer film of Ge6 on silicon substrate was obtained by reducing the monolayer SAMs to alcohol hydroxylated surface with LiAlH(4) and repeating the self-assembly process. The self-assembled multilayer film was calcined in air at 500 degrees C to form a thin layer of GeO(2) on SiO(2)/Si substrate surface. The XPS measurement detected the formation of GeO(2) layer. Copyright 1999 Academic Press.
Collapse
Affiliation(s)
- Y Li
- Center for Intelligent Materials United Research (CIMUR), Jilin University, Changchun, 130023, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
47
|
Chen H, Matsumoto A, Nishimiya N, Tsutsumi K. Preparation and characterization of TiO2 incorporated Y-zeolite. Colloids Surf A Physicochem Eng Asp 1999. [DOI: 10.1016/s0927-7757(99)00052-7] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
48
|
Gas Phase Transesterification of Dimethylcarbonate and Phenol over Supported Titanium Dioxide. J Catal 1999. [DOI: 10.1006/jcat.1999.2495] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
49
|
Gao X, Wachs IE. Titania–silica as catalysts: molecular structural characteristics and physico-chemical properties. Catal Today 1999. [DOI: 10.1016/s0920-5861(99)00048-6] [Citation(s) in RCA: 489] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
50
|
Gao X, Bare SR, Fierro JLG, Banares MA, Wachs IE. Preparation and in-Situ Spectroscopic Characterization of Molecularly Dispersed Titanium Oxide on Silica. J Phys Chem B 1998. [DOI: 10.1021/jp981423e] [Citation(s) in RCA: 273] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xingtao Gao
- Department of Chemistry and Chemical Engineering, Zettlemoyer Center for Surface Studies, Lehigh University, 7 Asa Drive, Bethlehem, Pennsylvania 18015; UOP Research, Des Plaines, Illinois 60017; and Institute de Catalisis y Petroleoquimica, C.S.I.C., Campus Univeritario Cantoblanco, E-28049-Madrid, Spain
| | - Simon R. Bare
- Department of Chemistry and Chemical Engineering, Zettlemoyer Center for Surface Studies, Lehigh University, 7 Asa Drive, Bethlehem, Pennsylvania 18015; UOP Research, Des Plaines, Illinois 60017; and Institute de Catalisis y Petroleoquimica, C.S.I.C., Campus Univeritario Cantoblanco, E-28049-Madrid, Spain
| | - J. L. G. Fierro
- Department of Chemistry and Chemical Engineering, Zettlemoyer Center for Surface Studies, Lehigh University, 7 Asa Drive, Bethlehem, Pennsylvania 18015; UOP Research, Des Plaines, Illinois 60017; and Institute de Catalisis y Petroleoquimica, C.S.I.C., Campus Univeritario Cantoblanco, E-28049-Madrid, Spain
| | - Miguel A. Banares
- Department of Chemistry and Chemical Engineering, Zettlemoyer Center for Surface Studies, Lehigh University, 7 Asa Drive, Bethlehem, Pennsylvania 18015; UOP Research, Des Plaines, Illinois 60017; and Institute de Catalisis y Petroleoquimica, C.S.I.C., Campus Univeritario Cantoblanco, E-28049-Madrid, Spain
| | - Israel E. Wachs
- Department of Chemistry and Chemical Engineering, Zettlemoyer Center for Surface Studies, Lehigh University, 7 Asa Drive, Bethlehem, Pennsylvania 18015; UOP Research, Des Plaines, Illinois 60017; and Institute de Catalisis y Petroleoquimica, C.S.I.C., Campus Univeritario Cantoblanco, E-28049-Madrid, Spain
| |
Collapse
|