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Synthesis, Characterization of Magnetic Composites and Testing of Their Activity in Liquid-Phase Oxidation of Phenol with Oxygen. CHEMENGINEERING 2022. [DOI: 10.3390/chemengineering6050068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The development and improvement of methods for the synthesis of environmentally friendly catalysts based on base metals is currently an urgent and promising task of modern catalysis. Catalysts based on nanoscale magnetite and maghemite have fast adsorption–desorption kinetics and high chemical activity. The purpose of this work is to obtain magnetic composites, determine their physicochemical characteristics and verify their activity in the process of liquid-phase oxidation of phenol with oxygen. Magnetic nanocomposites were obtained by chemical co-deposition of salts of ferrous and trivalent iron. The synthesized magnetic composites were studied by X-ray diffractometry, energy dispersive X-ray fluorescence and Mössbauer spectroscopy, IR-Fourier spectroscopy and elemental analysis. To increase the catalytic activity in oxidative processes, the magnetite surfaces were modified using cobalt nitrate salt. Further, CoFe2O4 was stabilized by adding polyethylenimine (PEI) as a surfactant. Preliminary studies of the oxidation of phenol with oxygen, as the most typical environmental pollutant were carried out on the obtained Fe3O4, CoFe2O4, CoFe2O4/PEI catalysts. The spectrum of the reaction product shows the presence of CH in the aromatic ring and double C=C bonds, stretching vibrations of the C=O groups of carbonyl compounds; the band at 3059 cm−1 corresponds to the presence of double C=C bonds and the band at 3424 cm−1 to hydroquinone compounds. The band at 1678 cm−1 and the intense band at 1646 cm−1 refer to vibrations of the C=O bonds of the carbonyl group of benzoquinone. Peaks at 1366 cm−1 and 1310 cm−1 can be related to the vibrations of C–H and C–C bonds of the quinone ring. Thus, it was demonstrated that produced magnetic composites based on iron oxide are quite effective in the oxidation of phenol with oxygen.
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Bandosz TJ, Ania CO. Origin and Perspectives of the Photochemical Activity of Nanoporous Carbons. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1800293. [PMID: 30250787 PMCID: PMC6145414 DOI: 10.1002/advs.201800293] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 04/13/2018] [Indexed: 05/20/2023]
Abstract
Even though, owing to the complexity of nanoporous carbons' structure and chemistry, the origin of their photoactivity is not yet fully understood, the recent works addressed here clearly show the ability of these materials to absorb light and convert the photogenerated charge carriers into chemical reactions. In many aspects, nanoporous carbons are similar to graphene; their pores are built of distorted graphene layers and defects that arise from their amorphicity and reactivity. As in graphene, the photoactivity of nanoporous carbons is linked to their semiconducting, optical, and electronic properties, defined by the composition and structural defects in the distorted graphene layers that facilitate the exciton splitting and charge separation, minimizing surface recombination. The tight confinement in the nanopores is critical to avoid surface charge recombination and to obtain high photochemical quantum yields. The results obtained so far, although the field is still in its infancy, leave no doubts on the possibilities of applying photochemistry in the confined space of carbon pores in various strategic disciplines such as degradation of pollutants, solar water splitting, or CO2 mitigation. Perhaps the future of photovoltaics and smart-self-cleaning or photocorrosion coatings is in exploring the use of nanoporous carbons.
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Affiliation(s)
- Teresa J. Bandosz
- Department of Chemistry and BiochemistryThe City College of New YorkNew YorkNY10031USA
- CUNY Energy CenterThe City College of New YorkNew YorkNY10031USA
| | - Conchi O. Ania
- CEMHTICNRS (UPR 3079)Univ. Orleans4571OrléansFrance
- Instituto Nacional del Carbon (INCAR)CSIC33011OviedoSpain
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Makoś P, Fernandes A, Przyjazny A, Boczkaj G. Sample preparation procedure using extraction and derivatization of carboxylic acids from aqueous samples by means of deep eutectic solvents for gas chromatographic-mass spectrometric analysis. J Chromatogr A 2018; 1555:10-19. [DOI: 10.1016/j.chroma.2018.04.054] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 04/18/2018] [Accepted: 04/23/2018] [Indexed: 11/15/2022]
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Das R, Vecitis CD, Schulze A, Cao B, Ismail AF, Lu X, Chen J, Ramakrishna S. Recent advances in nanomaterials for water protection and monitoring. Chem Soc Rev 2017; 46:6946-7020. [DOI: 10.1039/c6cs00921b] [Citation(s) in RCA: 353] [Impact Index Per Article: 50.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nanomaterials (NMs) for adsorption, catalysis, separation, and disinfection are scrutinized. NMs-based sensor technologies and environmental transformations of NMs are highlighted.
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Affiliation(s)
- Rasel Das
- Leibniz Institute of Surface Modification
- D-04318 Leipzig
- Germany
| | - Chad D. Vecitis
- School of Engineering and Applied Sciences
- Harvard University
- Cambridge
- USA
| | - Agnes Schulze
- Leibniz Institute of Surface Modification
- D-04318 Leipzig
- Germany
| | - Bin Cao
- School of Civil and Environmental Engineering
- Nanyang Technological University
- Singapore
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Centre
- Universiti Teknologi Malaysia
- 81310 Johor
- Malaysia
| | - Xianbo Lu
- CAS Key Laboratory of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Dalian 116023
- China
| | - Jiping Chen
- CAS Key Laboratory of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Dalian 116023
- China
| | - Seeram Ramakrishna
- Centre for Nanofibers and Nanotechnology
- Department of Mechanical Engineering
- National University of Singapore
- Singapore
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Szabados E, Sági G, Kovács A, Takács E, Wojnárovits L, Tungler A. Comparison of catalysis and high energy irradiation for the intensification of wet oxidation as process wastewater pretreatment. REACTION KINETICS MECHANISMS AND CATALYSIS 2015. [DOI: 10.1007/s11144-015-0894-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Recent advances on wet air oxidation catalysts for treatment of industrial wastewaters. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.12.017] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Velasco LF, Tsyntsarski B, Petrova B, Budinova T, Petrov N, Parra JB, Ania CO. Carbon foams as catalyst supports for phenol photodegradation. JOURNAL OF HAZARDOUS MATERIALS 2010; 184:843-848. [PMID: 20875925 DOI: 10.1016/j.jhazmat.2010.08.118] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Revised: 07/20/2010] [Accepted: 08/31/2010] [Indexed: 05/29/2023]
Abstract
A carbon foam using coal tar pitch as precursor was prepared and investigated as support for titanium oxide for the photocatalytic degradation of phenol. The performance of the carbon foam/titania composite was compared to those of unsupported titania and other activated carbon composites from the literature. The photodegradation rate of phenol over the catalysts under UV illumination was fitted to the Langmuir-Hinshelwood model; data showed that the apparent rate constant of the carbon foam supported titania was almost three times larger than that of bare titania, and comparable to that of other carbon supported composites. Considering the low porous features of the carbon foam, this suggests that large surface area supports are not essential to achieve high degradation rates and efficiencies. Moreover, when titania is supported on the carbon foam large amounts of catechol are detected in solution after UV irradiation, indicating a better degradation efficiency.
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Affiliation(s)
- L F Velasco
- Institute of Organic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. Bl. 9, 1113 Sofia, Bulgaria; Instituto Nacional del Carbón (INCAR), CSIC, Oviedo 33080, Spain
| | - B Tsyntsarski
- Institute of Organic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. Bl. 9, 1113 Sofia, Bulgaria
| | - B Petrova
- Institute of Organic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. Bl. 9, 1113 Sofia, Bulgaria
| | - T Budinova
- Institute of Organic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. Bl. 9, 1113 Sofia, Bulgaria
| | - N Petrov
- Institute of Organic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. Bl. 9, 1113 Sofia, Bulgaria
| | - J B Parra
- Instituto Nacional del Carbón (INCAR), CSIC, Oviedo 33080, Spain
| | - C O Ania
- Instituto Nacional del Carbón (INCAR), CSIC, Oviedo 33080, Spain.
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Santos A, Yustos P, Rodríguez S, Vicente F, Romero A. Kinetic Modeling of Toxicity Evolution during Phenol Oxidation. Ind Eng Chem Res 2009. [DOI: 10.1021/ie801797q] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- A. Santos
- Department of Chemical Engineering, Fac. CC. Químicas, Universidad Complutense Madrid, 28040-Madrid, Spain
| | - P. Yustos
- Department of Chemical Engineering, Fac. CC. Químicas, Universidad Complutense Madrid, 28040-Madrid, Spain
| | - S. Rodríguez
- Department of Chemical Engineering, Fac. CC. Químicas, Universidad Complutense Madrid, 28040-Madrid, Spain
| | - F. Vicente
- Department of Chemical Engineering, Fac. CC. Químicas, Universidad Complutense Madrid, 28040-Madrid, Spain
| | - A. Romero
- Department of Chemical Engineering, Fac. CC. Químicas, Universidad Complutense Madrid, 28040-Madrid, Spain
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Bhargava S, Jani H, Tardio J, Akolekar D, Hoang M. Catalytic Wet Oxidation of Ferulic Acid (A Model Lignin Compound) Using Heterogeneous Copper Catalysts. Ind Eng Chem Res 2007. [DOI: 10.1021/ie070085d] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Suresh Bhargava
- Department of Applied Science, RMIT University, Melbourne, VIC 3001 Australia, and CSIRO Manufacturing and Materials Technology, Clayton, VIC 3168 Australia
| | - Harit Jani
- Department of Applied Science, RMIT University, Melbourne, VIC 3001 Australia, and CSIRO Manufacturing and Materials Technology, Clayton, VIC 3168 Australia
| | - James Tardio
- Department of Applied Science, RMIT University, Melbourne, VIC 3001 Australia, and CSIRO Manufacturing and Materials Technology, Clayton, VIC 3168 Australia
| | - Deepak Akolekar
- Department of Applied Science, RMIT University, Melbourne, VIC 3001 Australia, and CSIRO Manufacturing and Materials Technology, Clayton, VIC 3168 Australia
| | - Manh Hoang
- Department of Applied Science, RMIT University, Melbourne, VIC 3001 Australia, and CSIRO Manufacturing and Materials Technology, Clayton, VIC 3168 Australia
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Han Y, Quan X, Chen S, Zhao H, Cui C, Zhao Y. Electrochemically enhanced adsorption of phenol on activated carbon fibers in basic aqueous solution. J Colloid Interface Sci 2006; 299:766-71. [PMID: 16600273 DOI: 10.1016/j.jcis.2006.03.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2005] [Revised: 03/03/2006] [Accepted: 03/04/2006] [Indexed: 10/24/2022]
Abstract
Electrosorption isotherms and thermodynamics of phenol on activated carbon fibers (ACFs) in basic solution, as well as the factors (bias potential, initial concentration, and electrolyte) affecting adsorption/electrosorption kinetics, were investigated. The kinetics, which followed the Lagergren adsorption rate law, exhibited a variety of responses depending on bias potential, initial concentration, and electrolyte. The electrosorption isotherms were in agreement with the classical models of Langmuir and Freundlich, but the former gave more satisfactory correlation coefficients. With electrosorption at a bias potential of 700 mV from the basic solution, a nearly 10-fold enhancement of maximum adsorption capacity was achievable. The electrosorption free energy (DeltaG(ads)), enthalpy (DeltaH(ads)), and entropy (DeltaS(ads)) of phenol on the ACFs were calculated from adsorption isotherms at different temperatures. The results indicated that electrosorption of phenol in basic solution was spontaneous and exothermic. Furthermore, it was assessed that electrosorption occurred by dipole-dipole interaction with DeltaH(ads) of -20.14 kJ mol(-1) besides suppositional electrostatic interaction.
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Affiliation(s)
- Yanhe Han
- School of Environmental and Biological Science & Technology, Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, Dalian University of Technology, Dalian 116024, China
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Arena F, Alongi E, Famulari P, Parmaliana A, Trunfio G. Basic Evaluation of the Catalytic Pattern of the CuCeOx System in the Wet Oxidation of Phenol with Oxygen. Catal Letters 2006. [DOI: 10.1007/s10562-005-9729-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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