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Pecoraro CM, Mino L, Kozyr E, Palmisano L, di Franco F, Loddo V, Santamaria M, Bellardita M. Pt-TiO 2 catalysts for glycerol photoreforming: comparison of anatase, brookite and rutile polymorphs. Chem Commun (Camb) 2024; 60:3782-3785. [PMID: 38436137 DOI: 10.1039/d4cc00353e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
We compared the H2 production from glycerol photoreforming for different TiO2 polymorphs, highlighting an increase of activity in the order Pt-rutile < Pt-P25 ≈ Pt-anatase < Pt-brookite with a different distribution of the reaction intermediates. We show that the highest ability to adsorb water and the different distribution of Pt active sites in brookite can positively influence its photoactivity.
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Affiliation(s)
- Claudio Maria Pecoraro
- Engineering Department, University of Palermo, Viale delle Scienze Ed. 6, Palermo, 90128, Italy.
| | - Lorenzo Mino
- Department of Chemistry and Interdepartmental Centre NIS, University of Torino, Via Giuria 7, Torino 10125, Italy.
| | - Elizaveta Kozyr
- Department of Chemistry and Interdepartmental Centre NIS, University of Torino, Via Giuria 7, Torino 10125, Italy.
| | - Leonardo Palmisano
- Engineering Department, University of Palermo, Viale delle Scienze Ed. 6, Palermo, 90128, Italy.
| | - Francesco di Franco
- Engineering Department, University of Palermo, Viale delle Scienze Ed. 6, Palermo, 90128, Italy.
| | - Vittorio Loddo
- Engineering Department, University of Palermo, Viale delle Scienze Ed. 6, Palermo, 90128, Italy.
| | - Monica Santamaria
- Engineering Department, University of Palermo, Viale delle Scienze Ed. 6, Palermo, 90128, Italy.
| | - Marianna Bellardita
- Engineering Department, University of Palermo, Viale delle Scienze Ed. 6, Palermo, 90128, Italy.
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Qayyum A, Giannakoudakis DA, Łomot D, Colmenares-Quintero RF, LaGrow AP, Nikiforow K, Lisovytskiy D, Colmenares JC. Tuning the physicochemical features of titanium oxide nanomaterials by ultrasound: Elevating photocatalytic selective partial oxidation of lignin-inspired aromatic alcohols. ULTRASONICS SONOCHEMISTRY 2023; 94:106306. [PMID: 36709727 PMCID: PMC9894921 DOI: 10.1016/j.ultsonch.2023.106306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
The research for "green" and economically feasible approaches such as (photo)catalysis especially for biomass valorization such as selective oxidation of biomass derived compounds like aromatic alcohols to corresponding aldehyde by avoiding the harsh reaction conditions and the addition of reagents concentrate the focus of attention the last years. Hence, design and development of novel photocatalyst for the partial selective oxidation is highly desirable. In this research work, ultrasonication of different frequencies (22, 40, 80 kHz) and different amplitudes was utilized as synthesis tool in order to obtain novel materials by precipitation method. The synthesized samples were characterized by using different techniques such as N2 sorption, TEM, XPS, XRD, thermal analysis, and diffuse reflectance spectroscopy. The synthesized sample by using low ultrasound frequency (22 kHz) and amplitude showed a mixed morphological and structural nature consisting of asymmetric 1-dimensional (nanorods-like), layered nano-structures and not well-defined areas, leading to elevate for metal oxide specific surface areas up to 155 m2/g. The observed 1-D nanostructures have diamentions in the range of 20-60 nm. This sample revealed the highest photo-oxidation efficiency for the selective conversion of two biomass-derived, and more specifically lignin-inspired model compounds, benzyl alcohol and cinnamyl alcohol to benzaldehyde and cinnamyl aldehyde, respectively, and hence the highest yield towards the desired aldehydes. The selective photo-oxidation activity was retained even after 5 photocatalytic cycles, while no leaching of Ti was recorded.
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Affiliation(s)
- Abdul Qayyum
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | | | - Dariusz Łomot
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | | | - Alec P LaGrow
- Scientific Imaging Section, Okinawa Institute of Science and Technology Graduate University, Kunigami-gun, Okinawa 904-0412, Japan
| | - Kostiantyn Nikiforow
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Dmytro Lisovytskiy
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Juan Carlos Colmenares
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
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Bellardita M, Feilizadeh M, Fiorenza R, Scirè S, Palmisano L, Loddo V. Selective aqueous oxidation of aromatic alcohols under solar light in the presence of TiO 2 modified with different metal species. PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES : OFFICIAL JOURNAL OF THE EUROPEAN PHOTOCHEMISTRY ASSOCIATION AND THE EUROPEAN SOCIETY FOR PHOTOBIOLOGY 2022; 21:2139-2151. [PMID: 35988108 DOI: 10.1007/s43630-022-00284-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 07/31/2022] [Indexed: 12/13/2022]
Abstract
A set of metals modified TiO2 photocatalysts were prepared starting from titanium tetraisopropoxyde and different metal precursors to study the influence of the addition of the various foreign agents on the physico-chemical and photocatalytic properties of the catalysts. The powders were characterized by X-ray diffraction, Raman spectroscopy, specific surface area measurements, scanning electron microscopy, energy dispersive X-ray spectroscopy, UV-Vis diffuse reflectance spectroscopy, photoluminescence, temperature programmed desorption after CO2 adsorption. The photocatalytic activity was evaluated using as probe reactions the partial oxidation of three aromatic alcohols: benzyl alcohol (BA), 4-methoxy benzyl alcohol (4-MBA), and 4-hydroxy benzyl alcohol (4-HBA) under simulated solar light irradiation. Different oxidation and selectivity values were obtained for the three substrates depending not only on the type of metals but also on the nature and position of the substituent in the phenyl ring of benzyl alcohol. As a general behaviour, the doped samples allowed the achievement of a greater selectivity especially for 4-MBA even if sometimes with minor conversions. The presence of W or Nb was beneficial for both conversion and selectivity for all the substrates with respect to bare TiO2.
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Affiliation(s)
| | | | - Roberto Fiorenza
- Department of Chemical Sciences, University of Catania, Catania, Italy
| | - Salvatore Scirè
- Department of Chemical Sciences, University of Catania, Catania, Italy
| | | | - Vittorio Loddo
- Department of Engineering, University of Palermo, Palermo, Italy
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Waste Biomass Selective and Sustainable Photooxidation to High-Added-Value Products: A Review. Catalysts 2022. [DOI: 10.3390/catal12101091] [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
Researchers worldwide seek to develop convenient, green, and ecological production processes to synthesize chemical products with high added value. In this sense, lignocellulosic biomass photocatalysis is an excellent process for obtaining various outcomes for the industry. One issue of biomass transformation via heterogeneous catalysis into valuable chemicals is the selection of an adequate catalyst that ensures high conversion and selectivity at low costs. Titanium oxide (TiO2), is widely used for several applications, including photocatalytic biomass degradation, depolymerization, and transformation. Graphite carbon nitride (g-C3N4) is a metal-free polymeric semiconductor with high oxidation and temperature resistance and there is a recent interest in developing this catalyst. Both catalysts are amenable to industrial production, relatively easy to dope, and suited for solar light absorption. Recent investigations also show the advantages of using heterojunctions, for biomass derivates production, due to their better solar spectrum absorption properties and, thus, higher efficiency, conversion, and selectivity over a broader spectrum. This work summarizes recent studies that maximize selectivity and conversion of biomass using photocatalysts based on TiO2 and g-C3N4 as supports, as well as the advantages of using metals, heterojunctions, and macromolecules in converting cellulose and lignin. The results presented show that heterogeneous photocatalysis is an interesting technology for obtaining several chemicals of industrial use, especially when using TiO2 and g-C3N4 doped with metals, heterojunctions, and macromolecules because these modified catalysts permit higher conversion and selectivity, milder reaction conditions, and reduced cost due to solar light utilization. In order to apply these technologies, it is essential to adopt government policies that promote the use of photocatalysts in the industry, in addition to encouraging active collaboration between photooxidation research groups and companies that process lignocellulosic biomass.
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McDonagh P, Skillen N, Robertson P, McCrudden D. In situ electrochemical determination of 2,5-diformylfuran (DFF) from the photocatalytic oxidation of 5-hydroxymethylfurfural (HMF). Electrochem commun 2022. [DOI: 10.1016/j.elecom.2022.107365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Galushchinskiy A, González-Gómez R, McCarthy K, Farràs P, Savateev A. Progress in Development of Photocatalytic Processes for Synthesis of Fuels and Organic Compounds under Outdoor Solar Light. ENERGY & FUELS : AN AMERICAN CHEMICAL SOCIETY JOURNAL 2022; 36:4625-4639. [PMID: 35558990 PMCID: PMC9082502 DOI: 10.1021/acs.energyfuels.2c00178] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/18/2022] [Indexed: 05/19/2023]
Abstract
With photovoltaics becoming a mature, commercially feasible technology, society is willing to allocate resources for developing and deploying new technologies based on using solar light. Analysis of projects supported by the European Commission in the past decade indicates exponential growth of funding to photocatalytic (PC) and photoelectrocatalytic (PEC) technologies that aim either at technology readiness levels (TRLs) TRL 1-3 or TRL > 3, with more than 75 Mio€ allocated from the year 2019 onward. This review provides a summary of PC and PEC processes for the synthesis of bulk commodities such as solvents and fuels, as well as chemicals for niche applications. An overview of photoreactors for photocatalysis on a larger scale is provided. The review rounds off with the summary of reactions performed at lab scale under natural outdoor solar light to illustrate conceptual opportunities offered by solar-driven chemistry beyond the reduction of CO2 and water splitting. The authors offer their vision of the impact of this area of research on society and the economy.
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Affiliation(s)
- Alexey Galushchinskiy
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Roberto González-Gómez
- School
of Chemistry, Ryan Institute, National University
of Ireland, Galway H91 CF50, Ireland
| | - Kathryn McCarthy
- School
of Chemistry, Ryan Institute, National University
of Ireland, Galway H91 CF50, Ireland
| | - Pau Farràs
- School
of Chemistry, Ryan Institute, National University
of Ireland, Galway H91 CF50, Ireland
| | - Aleksandr Savateev
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
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Fu Y, Sun P, Li G, He R, Shi L, Xing N. Recent advances in the synthetic method and mechanism for the important N‐heterocyclic compound of 3‐methylindole. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yi Fu
- College of Chemistry and Chemical Engineering Liaoning Normal University Dalian China
| | - Pinghui Sun
- College of Chemistry and Chemical Engineering Liaoning Normal University Dalian China
| | - Gong Li
- College of Chemistry and Chemical Engineering Liaoning Normal University Dalian China
| | - Riyang He
- College of Chemistry and Chemical Engineering Liaoning Normal University Dalian China
| | - Lei Shi
- College of Chemistry and Chemical Engineering Liaoning Normal University Dalian China
| | - Na Xing
- College of Chemistry and Chemical Engineering Liaoning Normal University Dalian China
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Yurdakal S, Bellardita M, Pibiri I, Palmisano L, Loddo V. Aqueous selective photocatalytic oxidation of salicyl alcohol by TiO2 catalysts: Influence of some physico-chemical features. Catal Today 2021. [DOI: 10.1016/j.cattod.2021.06.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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