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Díez AM, Pazos M, Sanromán MÁ, Naranjo HV, Mayer J, Kolen'ko YV. Photocatalytic solid-phase degradation of polyethylene with fluoride-doped titania under low consumption ultraviolet radiation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 329:117044. [PMID: 36584507 DOI: 10.1016/j.jenvman.2022.117044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/02/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Photodegradation of plastic in solid-phase requires the polymer to be composited with an efficient photocatalyst. We report herein the successful synthesis and characterization of fluoride-doped-TiO2 and its applicability, for the first time, on solid-phase photodegradation of polyethylene films. Nearly half weight loss of polyethylene, containing only 2% of the photocatalyst, is eliminated after three weeks of ultraviolet A radiation using a low consumption light emitting diode lamp, defeating previously reported data. The half-life time of the plastic was around 3 weeks, highlighting the viability of this process for real applications. Results were compared to raw PE and PE composite with well-known TiO2, resulting in, respectively, 0 and 26% of weight loss. The degradation process was monitored by optical microscopy, scanning electron microscopy, X-ray diffraction, thermogravimetric analysis, Fourier transform infrared and X-ray photoelectron spectroscopy, which revealed the formation of plastic cracks, loss of polyethylene crystallinity and thus stability, the oxidation of C-H bonds and the oxidized state of the surface compounds during photodegradation. The obtained results open a path for the future production of cleaner and self-photodegradable plastics, where the photocatalyst would be introduced in all the manufactured plastics, making possible the quicker photodegradation of the plastics that end up on the environment and the plastics reaching wastewater treatment plants.
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Affiliation(s)
- Aida M Díez
- Nanochemistry Research Group, International Iberian Nanotechnology Laboratory (INL), Braga, Portugal; CINTECX, Universidade de Vigo, Grupo de Bioingeniería y Procesos Sostenibles, Departamento de Ingeniería Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain.
| | - Marta Pazos
- CINTECX, Universidade de Vigo, Grupo de Bioingeniería y Procesos Sostenibles, Departamento de Ingeniería Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - M Ángeles Sanromán
- CINTECX, Universidade de Vigo, Grupo de Bioingeniería y Procesos Sostenibles, Departamento de Ingeniería Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - Helen Valencia Naranjo
- Central Facility for Electron Microscopy (GFE), RWTH Aachen University, D-52074 Aachen, Germany
| | - Joachim Mayer
- Central Facility for Electron Microscopy (GFE), RWTH Aachen University, D-52074 Aachen, Germany
| | - Yury V Kolen'ko
- Nanochemistry Research Group, International Iberian Nanotechnology Laboratory (INL), Braga, Portugal
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Montjoy DG, Wilson EAK, Hou H, Graves JD, Kotov NA. Photocatalytic cyclohexane oxidation and epoxidation using hedgehog particles. Nat Commun 2023; 14:857. [PMID: 36792615 PMCID: PMC9932155 DOI: 10.1038/s41467-023-36473-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 02/02/2023] [Indexed: 02/17/2023] Open
Abstract
Inorganic particles are effective photocatalysts for the liquid-state production of organic precursors and monomers at ambient conditions. However, poor colloidal stability of inorganic micro- and nanoparticles in low-polarity solvents limits their utilization as heterogeneous catalysts and coating them with surfactants drastically reduces their catalytic activity. Here we show that effective photo-oxidation of liquid cyclohexane (CH) is possible using spiky particles from metal oxides with hierarchical structure combining micro- and nanoscale structural features engineered for enhanced dispersibility in CH. Nanoscale ZnO spikes are assembled radially on α-Fe2O3 microcube cores to produce complex 'hedgehog' particles (HPs). The 'halo' of stiff spikes reduces van der Waals attraction, preventing aggregation of the catalytic particles. Photocatalysis in Pickering emulsions formed by HPs with hydrogen peroxide provides a viable pathway to energy-efficient alkane oxidation in the liquid state. Additionally, HPs enable a direct chemical pathway from alkanes to epoxides at ambient conditions, specifically to cyclohexene oxide, indicating that the structure of HPs has a direct effect on the recombination of ion-radicals during the hydrocarbon oxidation. These findings demonstrate the potential of inorganic photocatalysts with complex architecture for 'green' catalysis.
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Affiliation(s)
- Douglas G. Montjoy
- grid.214458.e0000000086837370Department of Chemical Engineering, University of Michigan, Ann Arbor, MI USA ,grid.214458.e0000000086837370Biointerfaces Institute, University of Michigan, Ann Arbor, MI USA
| | - Elizabeth A. K. Wilson
- grid.214458.e0000000086837370Department of Chemical Engineering, University of Michigan, Ann Arbor, MI USA ,grid.214458.e0000000086837370Biointerfaces Institute, University of Michigan, Ann Arbor, MI USA
| | - Harrison Hou
- grid.214458.e0000000086837370Department of Chemical Engineering, University of Michigan, Ann Arbor, MI USA ,grid.214458.e0000000086837370Biointerfaces Institute, University of Michigan, Ann Arbor, MI USA
| | - Joel D. Graves
- grid.214458.e0000000086837370Department of Chemical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Nicholas A. Kotov
- grid.214458.e0000000086837370Department of Chemical Engineering, University of Michigan, Ann Arbor, MI USA ,grid.214458.e0000000086837370Biointerfaces Institute, University of Michigan, Ann Arbor, MI USA ,grid.214458.e0000000086837370Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI USA ,grid.214458.e0000000086837370Department of Materials Science, University of Michigan, Ann Arbor, MI USA
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Preparation and Characterization of ZnFe2O4/Mn2O3 Nanocatalysts for the Degradation of Nitrobenzene. CHEMISTRY AFRICA 2023. [DOI: 10.1007/s42250-023-00609-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Xu J, Yan C, Wu Z, Xu M, Wei T, He T, Zhou W, Zhang Y, Zhang J, Yang B. Synergistic reduction and oxidation system using 4,7-dihydroxycoumarin as a green photocatalyst for efficient nitrobenzene degradation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Li G, Jia H, Liu H, Yang X, Lin MC. Nanostructured IrO x supported on N-doped TiO 2 as an efficient electrocatalyst towards acidic oxygen evolution reaction. RSC Adv 2022; 12:28929-28936. [PMID: 36320779 PMCID: PMC9552315 DOI: 10.1039/d2ra05374h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 10/04/2022] [Indexed: 01/25/2023] Open
Abstract
Reducing the Ir consumption without compromising the catalytic performance for the oxygen evolution reaction (OER) is highly paramount to promote the extensive development of the environmentally-friendly solid polymer electrolyte water electrolysis (SPEWE) system. Herein, TiO2 is doped with N through facile NH3 gas treatment and innovatively employed to support IrO x nanoparticles towards acidic OER. N-doping action not only dramatically boosts the electrical conductivity and dispersing/anchoring effects of TiO2, but also effectively improves the electron-transfer procedure. As a result, the IrO x /N-TiO2 electrocatalyst exhibits prominent catalyst utilization, catalytic activity and stability. Specifically, the overpotential required to deliver 10 mA cm-2 is only 270 mV, and the mass activity climbs to 278.7 A gIr -1 @ 1.55 VRHE. Moreover, the single cell voltage is only 1.761 V @ 2.0 A cm-2 when adopting IrO x /N-TiO2 as the anode catalyst, which is 44 mV lower than that of the commercial IrO2 counterpart.
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Affiliation(s)
- Guoqiang Li
- College of Energy Storage Technology, Shandong University of Science and TechnologyQingdao 266590China
| | - Hongrui Jia
- College of Energy Storage Technology, Shandong University of Science and TechnologyQingdao 266590China
| | - Huan Liu
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of SciencesQingdao 266101China
| | - Xin Yang
- College of Energy Storage Technology, Shandong University of Science and TechnologyQingdao 266590China
| | - Meng-Chang Lin
- College of Energy Storage Technology, Shandong University of Science and TechnologyQingdao 266590China
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Zhang B, Shi J, Zhao Y, Wang H, Chu Z, Chen Y, Wu Z, Jiang Z. Pickering interfacial biocatalysis with enhanced diffusion processes for CO2 mineralization. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63998-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Dedovets D, Li Q, Leclercq L, Nardello‐Rataj V, Leng J, Zhao S, Pera‐Titus M. Multiphase Microreactors Based on Liquid–Liquid and Gas–Liquid Dispersions Stabilized by Colloidal Catalytic Particles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202107537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dmytro Dedovets
- Eco-Efficient Products and Processes Laboratory (E2P2L) UMI 3464 CNRS-Solvay 3966 Jin Du Road, Xin Zhuang Ind Zone 201108 Shanghai China
- Laboratoire du Futur (LOF) UMR 5258, CNRS-Solvay-Universite Bordeaux 1 178 Av Dr Albert Schweitzer 33608 Pessac Cedex France
| | - Qingyuan Li
- Eco-Efficient Products and Processes Laboratory (E2P2L) UMI 3464 CNRS-Solvay 3966 Jin Du Road, Xin Zhuang Ind Zone 201108 Shanghai China
| | - Loïc Leclercq
- Univ Lille CNRS Centrale Lille Univ Artois UMR 8181 UCCS F-59000 Lille France
| | | | - Jacques Leng
- Laboratoire du Futur (LOF) UMR 5258, CNRS-Solvay-Universite Bordeaux 1 178 Av Dr Albert Schweitzer 33608 Pessac Cedex France
| | - Shuangliang Zhao
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology School of Chemistry and Chemical Engineering Guangxi University 530004 Nanning China
| | - Marc Pera‐Titus
- Eco-Efficient Products and Processes Laboratory (E2P2L) UMI 3464 CNRS-Solvay 3966 Jin Du Road, Xin Zhuang Ind Zone 201108 Shanghai China
- Cardiff Catalysis Institute School of Chemistry Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
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Hu W, Wu F, Liu W. Facile synthesis of Z-scheme Bi2O3/Bi2WO6 composite for highly effective visible-light-driven photocatalytic degradation of nitrobenzene. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2021.111377] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Orooji Y, Tanhaei B, Ayati A, Tabrizi SH, Alizadeh M, Bamoharram FF, Karimi F, Salmanpour S, Rouhi J, Afshar S, Sillanpää M, Darabi R, Karimi-Maleh H. Heterogeneous UV-Switchable Au nanoparticles decorated tungstophosphoric acid/TiO 2 for efficient photocatalytic degradation process. CHEMOSPHERE 2021; 281:130795. [PMID: 34022601 DOI: 10.1016/j.chemosphere.2021.130795] [Citation(s) in RCA: 95] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 04/29/2021] [Accepted: 05/01/2021] [Indexed: 06/12/2023]
Abstract
In the present study, gold nanoparticles were locally well-decorated on the surface of TiO2 using the tungstophosphoric acid (HPW), as UV-switchable reducing intermediate linkers. The prepared Au NPs/HPW/TiO2 nanostructure was characterized using FTIR, XRD, EDS, SEM and TEM, which confirmed the successful attachment of quasi-spherical Au NPs in the range of 20-30 nm on the surface of HPW modified TiO2. Also, the FTIR results show that the Au NPs were binded to TiO2 through the terminal the oxygen atoms HPW. The photocatalytic performance of prepared nanostructures was assessed in degradation of nitrobenzene. The nitrobenzene photodegradation kinetic study revealed that it well followed the Langmuir-Hinshelwood kinetic model with the apparent rate constant of 0.001 min-1 using anatase TiO2, 0.0004 min-1 using HPW, 0.0014 using HPW/TiO2, while it was obtained 0.0065 min-1 using Au NPs@HPW/TiO2 nanostructure. It shows that the photocatalytic rate of the prepared nanocomposites increased by 6.5- and 4.6-fold compared to photoactivity of anatase TiO2 and HPW/TiO2 respectively. Also, the photocatalytic mechanism of process was proposed. Moreover, the reusability study confirmed that its photocatalytic activity still remained high after three cycles.
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Affiliation(s)
- Yasin Orooji
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, Jiangsu, PR China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, PR China
| | - Bahareh Tanhaei
- Department of Chemical Engineering and Energy, Quchan University of Technology, Quchan, Iran.
| | - Ali Ayati
- Department of Chemical Engineering and Energy, Quchan University of Technology, Quchan, Iran
| | - Soheil Hamidi Tabrizi
- Department of Chemical Engineering and Energy, Quchan University of Technology, Quchan, Iran
| | - Marzieh Alizadeh
- Laboratory of Basic Sciences, Mohammad Rasul Allah Research Tower, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Fatemeh Karimi
- Department of Chemical Engineering and Energy, Quchan University of Technology, Quchan, Iran
| | - Sadegh Salmanpour
- Department of Chemistry, Sari Branch, Islamic Azad University, Sari, Iran
| | - Jalal Rouhi
- Faculty of Physics, University of Tabriz, Tabriz, 51566, Iran
| | - Safoora Afshar
- Department of Chemical Engineering and Energy, Quchan University of Technology, Quchan, Iran
| | - Mika Sillanpää
- Institute of Research and Development, Duy Tan University, Da Nang, 550000, Viet Nam; Faculty of Environment and Chemical Engineering, Duy Tan University, Da Nang, 550000, Viet Nam; School of Civil Engineering and Surveying, Faculty of Health, Engineering and Sciences, University of Southern Queensland, West Street, Toowoomba, 4350, QLD, Australia
| | - Rozhin Darabi
- Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Islamic Republic of Iran.
| | - Hassan Karimi-Maleh
- Department of Chemical Engineering and Energy, Quchan University of Technology, Quchan, Iran; School of Resources and Environment, University of Electronic Science and Technology of China, P.O. Box 611731, Xiyuan Ave, Chengdu, PR China; Department of Chemical Sciences (formerly Department of Applied Chemistry), University of Johannesburg, P.O. Box 17011, Doornfontein Campus, Johannesburg, 2028, South Africa.
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Dedovets D, Li Q, Leclercq L, Nardello-Rataj V, Leng J, Zhao S, Pera-Titus M. Multiphase Microreactors Based on Liquid-Liquid and Gas-Liquid Dispersions Stabilized by Colloidal Catalytic Particles. Angew Chem Int Ed Engl 2021; 61:e202107537. [PMID: 34528366 PMCID: PMC9293096 DOI: 10.1002/anie.202107537] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Indexed: 01/08/2023]
Abstract
Pickering emulsions, foams, bubbles, and marbles are dispersions of two immiscible liquids or of a liquid and a gas stabilized by surface‐active colloidal particles. These systems can be used for engineering liquid–liquid–solid and gas–liquid–solid microreactors for multiphase reactions. They constitute original platforms for reengineering multiphase reactors towards a higher degree of sustainability. This Review provides a systematic overview on the recent progress of liquid–liquid and gas–liquid dispersions stabilized by solid particles as microreactors for engineering eco‐efficient reactions, with emphasis on biobased reagents. Physicochemical driving parameters, challenges, and strategies to (de)stabilize dispersions for product recovery/catalyst recycling are discussed. Advanced concepts such as cascade and continuous flow reactions, compartmentalization of incompatible reagents, and multiscale computational methods for accelerating particle discovery are also addressed.
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Affiliation(s)
- Dmytro Dedovets
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay, 3966 Jin Du Road, Xin Zhuang Ind Zone, 201108, Shanghai, China.,Laboratoire du Futur (LOF), UMR 5258, CNRS-Solvay-Universite Bordeaux 1, 178 Av Dr Albert Schweitzer, 33608, Pessac Cedex, France
| | - Qingyuan Li
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay, 3966 Jin Du Road, Xin Zhuang Ind Zone, 201108, Shanghai, China
| | - Loïc Leclercq
- Univ Lille, CNRS, Centrale Lille, Univ Artois, UMR 8181 UCCS, F-59000, Lille, France
| | | | - Jacques Leng
- Laboratoire du Futur (LOF), UMR 5258, CNRS-Solvay-Universite Bordeaux 1, 178 Av Dr Albert Schweitzer, 33608, Pessac Cedex, France
| | - Shuangliang Zhao
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, 530004, Nanning, China
| | - Marc Pera-Titus
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay, 3966 Jin Du Road, Xin Zhuang Ind Zone, 201108, Shanghai, China.,Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
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