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Jiao W, Shao S, Yang P, Gao K, Liu Y. Kinetics and mechanism of nitrobenzene degradation by hydroxyl radicals-based ozonation process enhanced by high gravity technology. Front Chem Sci Eng 2021. [DOI: 10.1007/s11705-020-1998-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Fessi N, Nsib MF, Chevalier Y, Guillard C, Dappozze F, Houas A, Palmisano L, Parrino F. Pickering Emulsions of Fluorinated TiO 2: A New Route for Intensification of Photocatalytic Degradation of Nitrobenzene. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13545-13554. [PMID: 33147976 PMCID: PMC7676287 DOI: 10.1021/acs.langmuir.0c02285] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/01/2020] [Indexed: 06/11/2023]
Abstract
Fluorination of the TiO2 surface has been often reported as a tool to increase the photocatalytic efficiency due to the beneficial effects in terms of production of oxidizing radicals. Moreover, it is shown that the unique amphiphilic properties of the fluorinated TiO2 (TiO2-F) surface allow one to use this material as a stabilizer for the formulation of Pickering emulsions of poorly soluble pollutants such as nitrobenzene (NB) in water. The emulsions have been characterized in terms of size of the droplets, type of emulsion, possibility of phase inversion, contact angle measurements, and optical microscopy. The emulsified system presents micrometer-sized droplets of pollutant surrounded by the TiO2-F photocatalyst. Consequently, the system can be considered to be composed of microreactors for the degradation of the pollutant, which maximize the contact area between the photocatalyst and substrate. The enhanced photocatalytic activity of TiO2-F was confirmed in the present paper as the apparent rate constants of NB photodegradation were 16 × 10-3 and 12 × 10-3 min-1 for fluorinated and bare TiO2, respectively. At NB concentrations largely exceeding its solubility, the rate constant was 0.04 × 10-3 min-1 in the presence of both TiO2 and TiO2-F. However, unlike TiO2, TiO2-F stabilized NB/water emulsions and, under these conditions, the efficiency of NB photocatalytic degradation in the emulsified system was ca. 18 times higher than in the nonemulsified one. This result is relevant also in terms of practical applications because it opens the route to one-pot treatments of biphasic polluted streams without the need of preliminary physical separation treatments.
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Affiliation(s)
- Nidhal Fessi
- Laboratoire
de Recherche Catalyse et Matériaux pour l’Environnement
et les Procédés LRCMEP (UR11ES85), Faculté des
Sciences de Gabès, University of
Gabès, Campus Universitaire, Cité Erriadh, 6072 Gabès, Tunisia
- University
of Lyon, Laboratoire d’Automatique et de Génie des Procédés
(LAGEPP), UMR 5007 CNRS, University Claude Bernard Lyon 1, 43 Boulevard 11 Novembre, 69622 Villeurbanne, France
| | - Mohamed Faouzi Nsib
- Laboratoire
de Recherche Catalyse et Matériaux pour l’Environnement
et les Procédés LRCMEP (UR11ES85), Faculté des
Sciences de Gabès, University of
Gabès, Campus Universitaire, Cité Erriadh, 6072 Gabès, Tunisia
- Higher
School of Sciences and Technology, University
of Sousse, Rue Tahar
Ben Achour, 4003 Sousse, Tunisia
| | - Yves Chevalier
- University
of Lyon, Laboratoire d’Automatique et de Génie des Procédés
(LAGEPP), UMR 5007 CNRS, University Claude Bernard Lyon 1, 43 Boulevard 11 Novembre, 69622 Villeurbanne, France
| | - Chantal Guillard
- University
of Lyon, Institut de Recherches sur la Catalyse et l’Environnement
de Lyon (IRCELYON), UMR 5256 CNRS, Université Claude Bernard
Lyon 1, 2 Avenue Albert Einstein, 69626 Villeurbanne, France
| | - Frédéric Dappozze
- University
of Lyon, Institut de Recherches sur la Catalyse et l’Environnement
de Lyon (IRCELYON), UMR 5256 CNRS, Université Claude Bernard
Lyon 1, 2 Avenue Albert Einstein, 69626 Villeurbanne, France
| | - Ammar Houas
- Laboratoire
de Recherche Catalyse et Matériaux pour l’Environnement
et les Procédés LRCMEP (UR11ES85), Faculté des
Sciences de Gabès, University of
Gabès, Campus Universitaire, Cité Erriadh, 6072 Gabès, Tunisia
| | - Leonardo Palmisano
- Dipartimento
di Ingegneria, University of Palermo, Viale delle Scienze Edificio 6, 90128 Palermo, Italy
| | - Francesco Parrino
- Department
of Industrial Engineering, University of
Trento, Via Sommarive
9, 38123 Trento, Italy
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Metabolic engineering of E. coli for producing phloroglucinol from acetate. Appl Microbiol Biotechnol 2020; 104:7787-7799. [PMID: 32737536 DOI: 10.1007/s00253-020-10591-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 03/22/2020] [Accepted: 03/26/2020] [Indexed: 12/12/2022]
Abstract
Phloroglucinol is a three-hydroxyl phenolic compound and has diverse physiological and pharmacological activities such as antivirus and anti-inflammatory activities. Chemical synthesis of phloroglucinol suffered from many drawbacks such as high cost and environmental pollution. To avoid the above issues, microbial phloroglucinol biosynthesis was successfully accomplished in this study, while the abundant and low-cost acetate was used as the main carbon source. Firstly, the toxicity of phloroglucinol was tested, and E. coli BL21(DE3) could tolerate 5 g/L phloroglucinol. The ability of phloroglucinol synthase (PhlD) for catalyzing malonyl-CoA to phloroglucinol was confirmed, and E. coli BL21(DE3) expressing PhlD and acetyl-CoA carboxylase (ACCase) could produce 1107 ± 12 mg/L phloroglucinol from glucose. Then, E. coli BL21(DE3) was engineered to utilize acetate to produce 228 ± 15 mg/L phloroglucinol. Then, the endogenous citrate synthase (GltA) which could catalyze oxaloacetate and acetyl-CoA generated from acetate to citrate was knocked down by CRISPRi system in order to enhance the carbon flux for phloroglucinol production, and the titer was improved to 284 ± 8 mg/L. This work demonstrated that acetate could be used as low-cost substrate to achieve the biosynthesis of phloroglucinol and provided an example of effective utilization of acetate.
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Effect of the addition of different doping agents on visible light activity of porous TiO2 photocatalysts. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.06.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ahmed MB, Kumer A, Islam M, Islam TSA. The Photochemical Degradation (PCD) of Nitrobenzene (NB) using UV Light and Fenton Reagent Under Various Conditions. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2018. [DOI: 10.18596/jotcsa.364152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Wang Z, Pu Y, Wang D, Shi J, Wang JX, Chen JF. 3D-foam-structured nitrogen-doped graphene-Ni catalyst for highly efficient nitrobenzene reduction. AIChE J 2017. [DOI: 10.1002/aic.16016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Zhiyong Wang
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology; Beijing University of Chemical Technology; Beijing 100029 China
| | - Yuan Pu
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology; Beijing University of Chemical Technology; Beijing 100029 China
| | - Dan Wang
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology; Beijing University of Chemical Technology; Beijing 100029 China
| | - Jie Shi
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology; Beijing University of Chemical Technology; Beijing 100029 China
| | - Jie-Xin Wang
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology; Beijing University of Chemical Technology; Beijing 100029 China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Jian-Feng Chen
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology; Beijing University of Chemical Technology; Beijing 100029 China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
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Yurdakal S, Augugliaro V, Sanz J, Soria J, Sobrados I, Torralvo MJ. The influence of the anatase nanoparticles boundaries on the titania activity performance. J Catal 2014. [DOI: 10.1016/j.jcat.2013.09.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Fundamentals on Adsorption, Membrane Filtration, and Advanced Oxidation Processes for Water Treatment. NANOTECHNOLOGY FOR WATER TREATMENT AND PURIFICATION 2014. [DOI: 10.1007/978-3-319-06578-6_1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Augugliaro V, Bellardita M, Loddo V, Palmisano G, Palmisano L, Yurdakal S. Overview on oxidation mechanisms of organic compounds by TiO2 in heterogeneous photocatalysis. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2012. [DOI: 10.1016/j.jphotochemrev.2012.04.003] [Citation(s) in RCA: 227] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pandikumar A, Manonmani S, Ramaraj R. TiO2–Au nanocomposite materials embedded in polymer matrices and their application in the photocatalytic reduction of nitrite to ammonia. Catal Sci Technol 2012. [DOI: 10.1039/c1cy00298h] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Szabó-Bárdos E, Markovics O, Horváth O, Töro N, Kiss G. Photocatalytic degradation of benzenesulfonate on colloidal titanium dioxide. WATER RESEARCH 2011; 45:1617-1628. [PMID: 21185053 DOI: 10.1016/j.watres.2010.11.045] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Revised: 11/26/2010] [Accepted: 11/29/2010] [Indexed: 05/30/2023]
Abstract
Titanium dioxide-mediated photocatalyzed degradation of benzenesulfonate (BS) was investigated by monitoring chemical oxygen demand (COD), total organic carbon (TOC) content, sulfate concentration, pH as well as the absorption and emission spectral changes in both argon-saturated and aerated systems. Liquid chromatography-mass spectrometry analysis was utilized for the detection of intermediates formed during the irradiation in the UVA range (λ(max) = 350 nm). The results obtained by these analytical techniques indicate that the initial step of degradation is hydroxylation of the starting surfactant, resulting in the production of hydroxy- and dihydroxybenzenesulfonates. These reactions were accompanied by desulfonation, which increases [H(+)] in both argon-saturated and aerated systems. In accordance with our previous theoretical calculations, the formation of ortho- and meta-hydroxylated derivatives is favored in the first step. The main product of the further oxygenation of these derivatives was 2,5-dihydroxy-benzesulfonate. No decay of the hydroxy species occurred during the 8-h irradiation in the absence of dissolved oxygen. In the aerated system much more efficient desulfonation and hydroxylation, moreover, a significant decrease of TOC took place at the initial stage. Further hydroxylation led to cleavage of the aromatic system, due to the formation of polyhydroxy derivatives, followed by ring fission, resulting in the production of aldehydes and carboxylic acids. Total mineralization was achieved by the end of the 8-h photocatalysis. It has been proved that in this photocatalytic procedure the presence of dissolved oxygen is necessary for the cleavage of the aromatic ring because hydroxyl radicals photochemically formed in the deaerated system too alone are not able to break the C-C bonds.
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Affiliation(s)
- Erzsébet Szabó-Bárdos
- University of Pannonia, Institute of Chemistry, Department of General and Inorganic Chemistry, H-8200 Veszprém, POB. 158, Hungary
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Palma V, Sannino D, Vaiano V, Ciambelli P. Fluidized-Bed Reactor for the Intensification of Gas-Phase Photocatalytic Oxidative Dehydrogenation of Cyclohexane. Ind Eng Chem Res 2010. [DOI: 10.1021/ie1005383] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vincenzo Palma
- Department of Chemical and Food Engineering, University of Salerno, Fisciano, Italy
| | - Diana Sannino
- Department of Chemical and Food Engineering, University of Salerno, Fisciano, Italy
| | - Vincenzo Vaiano
- Department of Chemical and Food Engineering, University of Salerno, Fisciano, Italy
| | - Paolo Ciambelli
- Department of Chemical and Food Engineering, University of Salerno, Fisciano, Italy
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Yurdakal S, Loddo V, Palmisano G, Augugliaro V, Berber H, Palmisano L. Kinetics of 4-Methoxybenzyl Alcohol Oxidation in Aqueous Solution in a Fixed Bed Photocatalytic Reactor. Ind Eng Chem Res 2009. [DOI: 10.1021/ie9008056] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sedat Yurdakal
- Kimya Bölümü, Fen Fakültesi, Anadolu Üniversitesi, Yunus Emre Kampüsü, 26470 Eskişehir, Turkey, and “Schiavello-Grillone” Photocatalysis Group, Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Università degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, Italy
| | - Vittorio Loddo
- Kimya Bölümü, Fen Fakültesi, Anadolu Üniversitesi, Yunus Emre Kampüsü, 26470 Eskişehir, Turkey, and “Schiavello-Grillone” Photocatalysis Group, Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Università degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, Italy
| | - Giovanni Palmisano
- Kimya Bölümü, Fen Fakültesi, Anadolu Üniversitesi, Yunus Emre Kampüsü, 26470 Eskişehir, Turkey, and “Schiavello-Grillone” Photocatalysis Group, Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Università degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, Italy
| | - Vincenzo Augugliaro
- Kimya Bölümü, Fen Fakültesi, Anadolu Üniversitesi, Yunus Emre Kampüsü, 26470 Eskişehir, Turkey, and “Schiavello-Grillone” Photocatalysis Group, Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Università degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, Italy
| | - Hüseyin Berber
- Kimya Bölümü, Fen Fakültesi, Anadolu Üniversitesi, Yunus Emre Kampüsü, 26470 Eskişehir, Turkey, and “Schiavello-Grillone” Photocatalysis Group, Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Università degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, Italy
| | - Leonardo Palmisano
- Kimya Bölümü, Fen Fakültesi, Anadolu Üniversitesi, Yunus Emre Kampüsü, 26470 Eskişehir, Turkey, and “Schiavello-Grillone” Photocatalysis Group, Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Università degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, Italy
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Augugliaro V, Yurdakal S, Loddo V, Palmisano G, Palmisano L. Determination of Photoadsorption Capacity of Polychrystalline TiO2 Catalyst in Irradiated Slurry. ADVANCES IN CHEMICAL ENGINEERING - PHOTOCATALYTIC TECHNOLOGIES 2009. [DOI: 10.1016/s0065-2377(09)00401-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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