1
|
Salgaonkar KN, Kale SR, Nalajala N, Mansuri S, Gopinath CS. Selective and Generic Photocatalytic Oxidation of Alcohol with Pd-TiO 2 Thin Films: Butanols to Butanal/Butanone with Different Morphologies of Pd and 0.5θ Pt -Pd Counterparts. Chem Asian J 2023; 18:e202201239. [PMID: 36716268 DOI: 10.1002/asia.202201239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/15/2023] [Accepted: 01/30/2023] [Indexed: 02/01/2023]
Abstract
The present study reports on the photocatalytic oxidation of butanols to butanal/butanone using thin film form of facet-dependent nano-Pd supported on commercial TiO2 under one-sun condition and demonstrates the generic nature. Pd-nanocube (PdNC (100)), Pd-truncated octahedron (PdTO (100) and (111)), polycrystalline (PdPC ), and their counterparts with half-a-monolayer Pt-coated on Pd (0.5θPt -Pd)) have been used as co-catalyst. A potentially scalable thin film form of Pd/TiO2 photocatalyst, prepared by drop-casting method, has been employed to study oxidation of n-butanol, 2-butanol, and iso-butanol to corresponding aldehyde/ketone. 100% selectivity is demonstrated to respective aldehyde/ketone with any catalyst used in the present study with varying degree of butanols conversion by NMR. 0.5θPt -PdTO /TiO2 shows the highest conversion of 2-butanol to butanone (13.6% in 4 h). Continuous 10 h of reaction with the most active 0.5θPt -PdTO /P25 catalyst demonstrates 31% conversion of 2-butanol to butanone, and catalyst recyclability has been demonstrated. The present protocol can be scalable to large scales to maximize the conversion in direct sunlight. Due to its generic nature, the current method can also be applied to many other alcohols and substrate molecules.
Collapse
Affiliation(s)
- Kranti N Salgaonkar
- Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411 008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sandip R Kale
- Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411 008, India.,Currently at Department of Chemistry, Yogeshwari Mahavidyalaya, Ambajogai, Beed, 431 517, India
| | - Naresh Nalajala
- Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411 008, India
| | - Sayana Mansuri
- Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411 008, India
| | - Chinnakonda S Gopinath
- Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411 008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| |
Collapse
|
2
|
Paschke AS, Selishchev D, Lyulyukin M, Kozlov D. Selective visible-light-induced photooxidation of benzylic alcohols to corresponding carbonyl compounds over titanium dioxide: A study of the structure-reactivity relationship. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
3
|
Selective Oxidation of Benzyl Alcohol in the Aqueous Phase by TiO
2
‐Based Photocatalysts: A Review. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202100321] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
4
|
Catalytic activity of ratio-dependent SBA-15 supported cerium/Pt catalysts for highly selective oxidation reaction of benzyl alcohol to benzaldehyde. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.09.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
5
|
Base-Free Benzyl Alcohol Aerobic Oxidation Catalyzed by AuPdNPs Supported on SBA-15 and TiO2/SBA-15 Mesoporous Materials. Catal Letters 2021. [DOI: 10.1007/s10562-021-03624-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
6
|
Nodehi M, Baghayeri M, Behazin R, Veisi H. Electrochemical aptasensor of bisphenol A constructed based on 3D mesoporous structural SBA-15-Met with a thin layer of gold nanoparticles. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105825] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
7
|
Khan A, Goepel M, Lisowski W, Łomot D, Lisovytskiy D, Mazurkiewicz-Pawlicka M, Gläser R, Colmenares JC. Titania/chitosan–lignin nanocomposite as an efficient photocatalyst for the selective oxidation of benzyl alcohol under UV and visible light. RSC Adv 2021; 11:34996-35010. [PMID: 35494738 PMCID: PMC9042820 DOI: 10.1039/d1ra06500a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 02/09/2022] [Accepted: 10/18/2021] [Indexed: 11/21/2022] Open
Abstract
Developing functional materials from biomass is a significant research subject due to its unique structure, abundant availability, biodegradability and low cost. A series of chitosan–lignin (CL) composites were prepared through a hydrothermal method by varying the weight ratio of chitosan and lignin. Subsequently, these CL composites were combined with titania (T) to form a nanocomposite (T/CL) using sol–gel and hydrothermal based methods. T/CL nanocomposites exhibited improved photocatalytic performance in comparison with sol–gel and hydrothermally prepared pristine titania (SGH-TiO2), towards the selective oxidation of benzyl alcohol (BnOH) to benzaldehyde (Bnald) under UV (375 nm) and visible light (515 nm). More specifically, the 75T/CL(25 : 75) nanocomposite (a representative photocatalyst from the 75T/CL nanocomposite series) showed very high selectivity (94%) towards Bnald at 55% BnOH conversion under UV light. Whereas, SGH-TiO2 titania exhibited much lower (68%) selectivity for Bnald at similar BnOH conversion. Moreover, the 75T/CL(25 : 75) nanocomposite also showed excellent Bnald selectivity (100%) at moderate BnOH conversion (19%) under visible light. Whereas, SGH-TiO2 did not show any activity for BnOH oxidation under visible light. XPS studies suggest that the visible light activity of the 75T/CL(25 : 75) nanocomposite is possibly related to the doping of nitrogen into titania from chitosan. However, according to UV-visible-DRS results, no direct evidence pertaining to the decrease in band-gap energy of titania was found upon coupling with the CL composite and the visible light activity was attributed to N-doping of titania. Overall, it was found that T/CL nanocomposites enhanced the photocatalytic performance of titania via improved light harvesting and higher selectivity through mediation of active radical species. Combining titania with chitosan–lignin composites results in an active and selective photocatalyst for the oxidation of benzyl alcohol to benzaldehyde under green light (515 nm).![]()
Collapse
Affiliation(s)
- Ayesha Khan
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw 01-224, Poland
| | - Michael Goepel
- Institute of Chemical Technology, Leipzig University, Leipzig 04103, Germany
| | - Wojciech Lisowski
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw 01-224, Poland
| | - Dariusz Łomot
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw 01-224, Poland
| | - Dmytro Lisovytskiy
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw 01-224, Poland
| | | | - Roger Gläser
- Institute of Chemical Technology, Leipzig University, Leipzig 04103, Germany
| | | |
Collapse
|
8
|
Liao L, Ditz D, Zeng F, Alves Favaro M, Iemhoff A, Gupta K, Hartmann H, Szczuka C, Jakes P, Hausoul PJC, Artz J, Palkovits R. Efficient Photocatalytic Oxidation of Aromatic Alcohols over Thiophene‐based Covalent Triazine Frameworks with A Narrow Band Gap. ChemistrySelect 2020. [DOI: 10.1002/slct.202004115] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Longfei Liao
- Institut für Technische und Makromolekulare Chemie(ITMC) RWTH Aachen University Aachen 52074 Germany
| | - Daniel Ditz
- Institut für Technische und Makromolekulare Chemie(ITMC) RWTH Aachen University Aachen 52074 Germany
| | - Feng Zeng
- Institut für Technische und Makromolekulare Chemie(ITMC) RWTH Aachen University Aachen 52074 Germany
| | - Marcelo Alves Favaro
- Institut für Technische und Makromolekulare Chemie(ITMC) RWTH Aachen University Aachen 52074 Germany
| | - Andree Iemhoff
- Institut für Technische und Makromolekulare Chemie(ITMC) RWTH Aachen University Aachen 52074 Germany
| | - Kavita Gupta
- Institut für Technische und Makromolekulare Chemie(ITMC) RWTH Aachen University Aachen 52074 Germany
| | - Heinrich Hartmann
- Zentralinstitut für Engineering Elektronik und Analytik ZEA-3: Analytik Forschungszentrum Jülich GmbH 52425 Jülich Germany
| | - Conrad Szczuka
- Forschungszentrum Jülich Institut für Energie- und Klimaforschung Grundlagen der Elektrochemie (IEK-9) 52425 Jülich Germany
- Institute of Physical Chemistry RWTH Aachen University 52074 Aachen Germany
| | - Peter Jakes
- Forschungszentrum Jülich Institut für Energie- und Klimaforschung Grundlagen der Elektrochemie (IEK-9) 52425 Jülich Germany
| | - Peter J. C. Hausoul
- Institut für Technische und Makromolekulare Chemie(ITMC) RWTH Aachen University Aachen 52074 Germany
| | - Jens Artz
- Institut für Technische und Makromolekulare Chemie(ITMC) RWTH Aachen University Aachen 52074 Germany
| | - Regina Palkovits
- Institut für Technische und Makromolekulare Chemie(ITMC) RWTH Aachen University Aachen 52074 Germany
| |
Collapse
|
9
|
Steric Effects of Mesoporous Silica Supported Bimetallic Au-Pt Catalysts on the Selective Aerobic Oxidation of Aromatic Alcohols. Catalysts 2020. [DOI: 10.3390/catal10101192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Three series of catalysts consisting of gold (Au), platinum (Pt), or gold-platinum bimetallic nanoparticles (NPs) with controlled sizes (Au NPs 10 ± 2 nm, Pt NPs 6 ± 2 nm) anchored on hierarchical micro-/meso-/macroporous silica were successfully developed and systematically evaluated for the selective oxidation of aromatic alcohols to their corresponding aldehydes. The catalysts were prepared by the sol-immobilization method using as-made Au NPs and/or Pt NPs colloids; the silica supports were prepared with controlled pore structures and the hierarchical porous structures of catalysts were created by controllable desilication via the alkaline solution of the metal colloids. The catalysts were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS), and Inductively Coupled Plasma-Mass Spectrometry (ICP-MS), and these results showed no synergistic effect between Au and Pt on boosting the catalytic performance, whereas they demonstrated a clear dependence of catalytic conversions and reaction rates on the structural porosity of Au-Pt bimetallic catalysts. Our findings could potentially inspire peer researchers and scientists to develop designer porous catalysts and processes in the selective organic conversions.
Collapse
|
10
|
Imbault AL, Gong J, Farnood R. Photocatalytic production of dihydroxyacetone from glycerol on TiO 2 in acetonitrile. RSC Adv 2020; 10:4956-4968. [PMID: 35498327 PMCID: PMC9049670 DOI: 10.1039/c9ra09434b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 01/20/2020] [Indexed: 01/24/2023] Open
Abstract
In this paper, photocatalytic production of dihydroxyacetone (DHA) from glycerol in acetonitrile on TiO2 was investigated. HPLC-MS analysis showed that glycerol was converted to DHA, glyceraldehyde (GAD), glyceric acid and several other chemicals. Using acetonitrile as the reaction medium instead of water not only provided a more selective process for production of DHA but also increased the glycerol conversion. After 300 min, with 1 g L−1 catalyst loading and 4 mM initial glycerol concentration, glycerol conversion and DHA selectivity were 96.8% and 17.8% in acetonitrile compared to 36.1% and 14.7% in water, respectively. The half-life of glycerol decreased by a factor of 6.2, from 467 min to 75 min, by changing the solvent from water to acetonitrile. Experiments using biodiesel-derived crude glycerol verified the effectiveness of the proposed process for the photocatalytic production of DHA from crude glycerol. A mechanism was proposed to explain the higher selectivity towards DHA over GAD in this process. Photocatalytic conversion of glycerol and selectivity for dihydroxyacetone production was increased by using acetonitrile as the reaction medium.![]()
Collapse
Affiliation(s)
- Alexander Luis Imbault
- Department of Chemical Engineering and Applied Chemistry, University of Toronto Toronto Ontario M5S 3E5 Canada
| | - Jianyu Gong
- School of Environmental Science and Engineering, Huazhong University of Science and Technology Wuhan China
| | - Ramin Farnood
- Department of Chemical Engineering and Applied Chemistry, University of Toronto Toronto Ontario M5S 3E5 Canada
| |
Collapse
|
11
|
Patel A, Patel G, Banerjee S. Visible Light-Emitting Diode Light-Driven Cu 0.9Fe 0.1@RCAC-Catalyzed Highly Selective Aerobic Oxidation of Alcohols and Oxidative Azo-Coupling of Anilines: Tandem One Pot Oxidation-Condensation to Imidazoles and Imines. ACS OMEGA 2019; 4:22445-22455. [PMID: 31909327 PMCID: PMC6941188 DOI: 10.1021/acsomega.9b03096] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 12/04/2019] [Indexed: 06/10/2023]
Abstract
Here, we have demonstrated visible light-emitting diode light-driven selective and efficient aerobic oxidation of primary/secondary alcohols to aldehydes/ketones and oxidative azo-coupling of anilines using biomass rice husk-derived chemically activated carbon sheet-supported copper-iron bimetallic hybrid nanomaterials (Cu x Fe1-x @RCAC) under oxidant and additive-free conditions. The catalytic activity of the Cu x Fe1-x @RCAC materials has been investigated for the oxidation of alcohols and anilines, and Cu0.9Fe0.1@RCAC was established as the best catalyst. Moreover, a tandem one-pot protocol has been developed for the sequential oxidation of alcohols followed by condensation to functionalized imidazole and imine derivatives in high isolated yields. The hybrid materials were highly robust and stable under the reaction conditions and were recovered simply by filtration and recycled up to 12th run without considerable loss in catalytic activity.
Collapse
|
12
|
Carabineiro SAC. Supported Gold Nanoparticles as Catalysts for the Oxidation of Alcohols and Alkanes. Front Chem 2019; 7:702. [PMID: 31750289 PMCID: PMC6848162 DOI: 10.3389/fchem.2019.00702] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 10/08/2019] [Indexed: 11/13/2022] Open
Abstract
Supporting gold nanoparticles have shown to be extremely active for many industrially important reactions, including oxidations. Two representative examples are the oxidation of alcohols and alkanes, that are substrates of industrial interest, but whose oxidation is still challenging. This review deals with these reactions, giving an insight of the first studies performed by gold based catalysts in these reactions and the most recent developments in the field.
Collapse
Affiliation(s)
- Sónia A C Carabineiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| |
Collapse
|
13
|
Ali M, Hasenöhrl DH, Zeininger L, Müllner ARM, Peterlik H, Hirsch A. HamiltonReceptor‐Mediated Self‐Assembly of Orthogonally Functionalized Au and TiO2Nanoparticles. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Muhammad Ali
- Department of Chemistry and Pharmacy, Institute of Organic ChemistryFriedrich Alexander University Erlangen-Nürnberg Nikolaus-Fiebigerstrasse 10 DE-91058 Erlangen Germany
| | - Dominik H. Hasenöhrl
- Department of Chemistry and Pharmacy, Institute of Organic ChemistryFriedrich Alexander University Erlangen-Nürnberg Nikolaus-Fiebigerstrasse 10 DE-91058 Erlangen Germany
| | - Lukas Zeininger
- Department of Chemistry and Pharmacy, Institute of Organic ChemistryFriedrich Alexander University Erlangen-Nürnberg Nikolaus-Fiebigerstrasse 10 DE-91058 Erlangen Germany
| | | | - Herwig Peterlik
- University of Vienna, Faculty of Physics Boltzmanngasse 5 AT-1090 Vienna Austria
| | - Andreas Hirsch
- Department of Chemistry and Pharmacy, Institute of Organic ChemistryFriedrich Alexander University Erlangen-Nürnberg Nikolaus-Fiebigerstrasse 10 DE-91058 Erlangen Germany
| |
Collapse
|
14
|
Barroso-Martín I, Infantes-Molina A, Talon A, Storaro L, Rodríguez-Aguado E, Rodríguez-Castellón E, Moretti E. CO Preferential Photo-Oxidation in Excess of Hydrogen in Dark and Simulated Solar Light Irradiation over AuCu-Based Catalysts on SBA-15 Mesoporous Silica-Titania. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1203. [PMID: 30011796 PMCID: PMC6073442 DOI: 10.3390/ma11071203] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 06/26/2018] [Accepted: 07/10/2018] [Indexed: 12/13/2022]
Abstract
In this work, SBA-15 silica and silica-titania have been used as supports for photocatalysts based on AuCu alloy (Au:Cu = 1) to be used in the preferential oxidation of CO (CO-PROX) in excess of hydrogen at room temperature and atmospheric pressure both in the dark and under simulated solar light irradiation. To study their textural, structural, chemical and optical properties, the samples were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM), adsorption-desorption of N₂ at -196 °C, 13C and 29Si solid state nuclear magnetic resonance (NMR), X-ray photoelectron spectroscopy (XPS) and diffuse reflectance ultraviolet-visible (DRUV-vis) spectroscopy. Titanium was present mainly in the form of titania aggregates, but also as small particles interacting with the SBA support. In both catalysts, the metal alloy nanoparticles displayed an average size of 4 nm as demonstrated by TEM measurements. AuCu/Ti-SBA turned out to be photoactive and selective in the photo-CO-PROX reaction showing the highest activity, with conversion and selectivity towards CO₂ of 80%, due both to the presence of titania incorporated in SBA-15 and to the synergistic effect of Cu when alloyed with Au.
Collapse
Affiliation(s)
- Isabel Barroso-Martín
- Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain.
| | - Antonia Infantes-Molina
- Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain.
| | - Aldo Talon
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, National Interuniversity Consortium of Materials Science and Technology (INSTM) Venice Research Unit, Via Torino 155/B, Mestre, 30172 Venezia, Italy.
| | - Loretta Storaro
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, National Interuniversity Consortium of Materials Science and Technology (INSTM) Venice Research Unit, Via Torino 155/B, Mestre, 30172 Venezia, Italy.
| | - Elena Rodríguez-Aguado
- Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain.
| | - Enrique Rodríguez-Castellón
- Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain.
| | - Elisa Moretti
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, National Interuniversity Consortium of Materials Science and Technology (INSTM) Venice Research Unit, Via Torino 155/B, Mestre, 30172 Venezia, Italy.
| |
Collapse
|
15
|
Barroso-Martín I, Moretti E, Talon A, Storaro L, Rodríguez-Castellón E, Infantes-Molina A. Au and AuCu Nanoparticles Supported on SBA-15 Ordered Mesoporous Titania-Silica as Catalysts for Methylene Blue Photodegradation. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E890. [PMID: 29799498 PMCID: PMC6025472 DOI: 10.3390/ma11060890] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 05/18/2018] [Accepted: 05/22/2018] [Indexed: 01/14/2023]
Abstract
The photocatalytic degradation of methylene blue (MB) dye has been performed under UV irradiation in aqueous suspension, employing photocatalysts based on Au (1.5 wt %) and AuCu (Au/Cu = 1, 2.0 wt %), and supported on SBA-15-ordered mesoporous silica, with and without titania (Si/Ti = 3), in order to evaluate the versatility of this mesoporous support in this type of reaction of great impact from the environmental point of view. Samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N₂ adsorption-desorption at -196 °C, and X-ray photoelectron spectroscopy (XPS), so as to study their structural, optical, and chemical properties. All the prepared catalysts were found to be active in the test reaction. The bimetallic AuCu-based catalysts attained very high MB degradation values, in particular AuCu/SBA-15 titania-silica sample reached 100% of dye oxidation after the monitored reaction period (120 min).
Collapse
Affiliation(s)
- Isabel Barroso-Martín
- Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain.
| | - Elisa Moretti
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, National Interuniversity Consortium of Materials Science and Technology (INSTM) Venice Research Unit, Via Torino 155/B, 30172 Mestre Venezia, Italy.
| | - Aldo Talon
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, National Interuniversity Consortium of Materials Science and Technology (INSTM) Venice Research Unit, Via Torino 155/B, 30172 Mestre Venezia, Italy.
| | - Loretta Storaro
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, National Interuniversity Consortium of Materials Science and Technology (INSTM) Venice Research Unit, Via Torino 155/B, 30172 Mestre Venezia, Italy.
| | - Enrique Rodríguez-Castellón
- Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain.
| | - Antonia Infantes-Molina
- Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain.
| |
Collapse
|
16
|
Vibulyaseak K, Bureekaew S, Ogawa M. Size-Controlled Synthesis of Anatase in a Mesoporous Silica, SBA-15. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13598-13603. [PMID: 29099191 DOI: 10.1021/acs.langmuir.7b03252] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The preparation of anatase in the cylindrical mesopore of SBA-15 (pore size of 8 nm) was done by the impregnation of tetraisopropyl orthotitanate and its subsequent crystallization. The impregnation was done without a solvent. Hydrolysis and condensation were promoted by the HCl vapor to encapsulate a larger amount of titanium oxo species in the mesopore and to suppress the desorption of the titanium oxo species during crystallization to anatase. After the reaction, the shape of the N2 adsorption isotherm changed significantly, indicating the decrease of the Brunauer-Emmett-Teller surface area from 743 to 283 m2/g and of the pore volume from 1.27 to 0.26 cm3/g, respectively. After the crystallization to anatase, the TiO2 content in the product was estimated to be 62 mass %, filling 30% of the pore volume of SBA-15. The homogeneous distribution of titanium in the SBA-15 sample was confirmed by elemental mapping based on scanning electron microscopy/energy-dispersive X-ray spectrometry. The crystal size of the anatase was determined to be ca. 8.1 nm, which is consistent with the pore size of the used SBA-15 (8.0 nm, derived from the Barrett-Joyner-Halenda analysis of the nitrogen adsorption isotherm). The zeta potential measurements showed the absence of anatase as isolated particles or on the surface of SBA-15 particles. All of these characterizations confirmed the successful size-controlled synthesis of anatase in the mesopore of SBA-15.
Collapse
Affiliation(s)
- Kasimanat Vibulyaseak
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC) , 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
| | - Sareeya Bureekaew
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC) , 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
| | - Makoto Ogawa
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC) , 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
| |
Collapse
|
17
|
Huang R, Fu Y, Zeng W, Zhang L, Wang D. The facile approach to fabricate gold nanoparticles and their application on the hydration and dehydrogenation reactions. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.09.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
18
|
Diao X, Hu Y, He Y, Quan F, Wei C. Preparation of 3,3,3-trifluoropropyl functionalized hydrophobic mesoporous silica and its outstanding adsorption properties for dibutyl phthalate. RSC Adv 2017. [DOI: 10.1039/c6ra27958a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, 3,3,3-trifluoropropyltrimethoxysilane was first used as a modification agent to synthesize a highly hydrophobic mesoporous silica, TFP-MCM-41, using a refluxing method.
Collapse
Affiliation(s)
- Xi Diao
- School of Environment and Energy
- South China University of Technology
- Guangzhou 510006
- P. R. China
| | - Yun Hu
- School of Environment and Energy
- South China University of Technology
- Guangzhou 510006
- P. R. China
- Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal
| | - Yinyun He
- School of Environment and Energy
- South China University of Technology
- Guangzhou 510006
- P. R. China
| | - Feng Quan
- School of Environment and Energy
- South China University of Technology
- Guangzhou 510006
- P. R. China
| | - Chaohai Wei
- School of Environment and Energy
- South China University of Technology
- Guangzhou 510006
- P. R. China
- Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal
| |
Collapse
|