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Layan E, Gupta J, Ly I, Nallet F, Bentaleb A, Laurichesse E, Vallée R, Blin JL, Lebeau B, Louërat F, Le Bechec M, Moonen P, Toupance T, Pigot T, Backov R. TiO 2-SiO 2 Self-Standing Materials bearing Hierarchical Porosity: MUB-200(x) Series toward 3D-Efficient VOC Photoabatement Properties. Langmuir 2023; 39:3871-3882. [PMID: 36878006 DOI: 10.1021/acs.langmuir.2c03062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Three-dimensional photoactive self-standing porous materials have been synthesized through the integration of soft chemistry and colloids (emulsions, lyotrope mesophases, and P25 titania nanoparticles). Final multiscale porous ceramics bear 700-1000 m2 g-1 of micromesoporosity depending on the P25 nanoparticle contents. The applied thermal treatment does not affect the P25 anatase/rutile allotropic phase ratio. Photonic investigations correlated with the foams' morphologies suggest that the larger amount of TiO2 that is introduced, the larger the walls' density and the smaller the mean size of the void macroscopic diameters, with both effects inducing a reduction of the photon transport mean free path (lt) with the P25 content increase. A light penetration depth in the range of 6 mm is reached, thus depicting real 3D photonic scavenger behavior. The 3D photocatalytic properties of the MUB-200(x) series, studied in a dynamic "flow-through" configuration, show that the highest photoactivity (concentration of acetone ablated and concentration of CO2 formed) is obtained with the highest monolith height (volume) while providing an average of 75% mineralization. These experimental results validate the fact that these materials, bearing 3D photoactivity, are paving the path for air purification operating with self-standing porous monolith-type materials, which are much easier to handle than powders. As such, the photocatalytic systems can now be advantageously miniaturized, thereby offering indoor air treatment within vehicles/homes while drastically limiting the associated encumbrance. This volumetric counterintuitive acting mode for light-induced reactions may find other relevant advanced applications for photoinduced water splitting, solar fuel, and dye-sensitized solar cells while both optimizing photon scavenging and opening the path for the miniaturization of the processes where encumbrance or a foot-print penalty would be advantageously circumvented.
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Affiliation(s)
- Elodie Layan
- Université de Bordeaux, CRPP-UMR CNRS 5031, 115 Avenue Albert Schweitzer, 33600 Pessac, France
| | - Juhi Gupta
- Université de Bordeaux, CRPP-UMR CNRS 5031, 115 Avenue Albert Schweitzer, 33600 Pessac, France
| | - Isabelle Ly
- Université de Bordeaux, CRPP-UMR CNRS 5031, 115 Avenue Albert Schweitzer, 33600 Pessac, France
| | - Frédéric Nallet
- Université de Bordeaux, CRPP-UMR CNRS 5031, 115 Avenue Albert Schweitzer, 33600 Pessac, France
| | - Ahmed Bentaleb
- Université de Bordeaux, CRPP-UMR CNRS 5031, 115 Avenue Albert Schweitzer, 33600 Pessac, France
| | - Eric Laurichesse
- Université de Bordeaux, CRPP-UMR CNRS 5031, 115 Avenue Albert Schweitzer, 33600 Pessac, France
| | - Renaud Vallée
- Université de Bordeaux, CRPP-UMR CNRS 5031, 115 Avenue Albert Schweitzer, 33600 Pessac, France
| | - Jean-Luc Blin
- Institut Jean Barriol, UMR CNRS 7053 L2CM, Université de Lorraine, Faculté des Sciences et Technologies, BP 70239, 54506 Vandoeuvre lès Nancy cedex, France
| | - Bénédicte Lebeau
- CNRS - Institut de Science des Matériaux de Mulhouse (IS2M), 15 rue Jean Starcky - BP 2488, 68057 Mulhouse cedex, France
| | - Frédéric Louërat
- Université de Bordeaux, CRPP-UMR CNRS 5031, 115 Avenue Albert Schweitzer, 33600 Pessac, France
| | - Mickael Le Bechec
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IMT Mines Ales, IPREM, 64000 Pau, France
| | - Peter Moonen
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, Total, LFCR, 64000 Pau, France
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, DMEX, 64000 Pau, France
| | - Thierry Toupance
- Université de Bordeaux, Institut des Sciences Moléculaires CNRS UMR 5255, Bât. A12, 351 Cours de la Libération, 33405 Talence cedex, France
| | - Thierry Pigot
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IMT Mines Ales, IPREM, 64000 Pau, France
| | - Rénal Backov
- Université de Bordeaux, CRPP-UMR CNRS 5031, 115 Avenue Albert Schweitzer, 33600 Pessac, France
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Feliczak-Guzik A. Nanomaterials as Photocatalysts-Synthesis and Their Potential Applications. Materials (Basel) 2022; 16:ma16010193. [PMID: 36614532 PMCID: PMC9822232 DOI: 10.3390/ma16010193] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/20/2022] [Accepted: 12/22/2022] [Indexed: 05/25/2023]
Abstract
Increasing demand for energy and environmental degradation are the most serious problems facing the man. An interesting issue that can contribute to solving these problems is the use of photocatalysis. According to literature, solar energy in the presence of a photocatalyst can effectively (i) be converted into electricity/fuel, (ii) break down chemical and microbial pollutants, and (iii) help water purification. Therefore, the search for new, efficient, and stable photocatalysts with high application potential is a point of great interest. The photocatalysts must be characterized by the ability to absorb radiation from a wide spectral range of light, the appropriate position of the semiconductor energy bands in relation to the redox reaction potentials, and the long diffusion path of charge carriers, besides the thermodynamic, electrochemical, and photoelectrochemical stabilities. Meeting these requirements by semiconductors is very difficult. Therefore, efforts are being made to increase the efficiency of photo processes by changing the electron structure, surface morphology, and crystal structure of semiconductors. This paper reviews the recent literature covering the synthesis and application of nanomaterials in photocatalysis.
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Affiliation(s)
- Agnieszka Feliczak-Guzik
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
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Teye GK, Huang J, Li Y, Li K, Chen L, Darkwah WK. Photocatalytic Degradation of Sulfamethoxazole, Nitenpyram and Tetracycline by Composites of Core Shell g-C 3N 4@ZnO, and ZnO Defects in Aqueous Phase. Nanomaterials (Basel) 2021; 11:2609. [PMID: 34685050 DOI: 10.3390/nano11102609] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/19/2021] [Accepted: 09/21/2021] [Indexed: 11/17/2022]
Abstract
The synthesis of photocatalysts with high charge separation and transfer efficiency are of immense significance in the process of using photocatalysis technology for wastewater treatment. In this study core shell g-C3N4@ZnO, and ZnO defects photocatalysts presented an improved morphology in its characterization using techniques such as SEM, DRS, PL, MS, EIS, and XRD, and enhanced photodegradation of sulfamethoxazole, Nitenpyram and Tetracycline. Different composites were obtained as confirmed by the various characterization techniques studied, including core shell g-C3N4@ZnO, and ZnO defects photocatalyst. The synthesized photocatalysts showed high visible light absorption efficiency within a range of ~655 to 420 nm. Core shell g-C3N4@ZnO, and ZnO defects photocatalysts demonstrated high photocatalytic activity ascribed to high load separation and transition as shown in PL, Photocurrent reaction and EIS. It is understandable that core shell g-C3N4@ZnO, and ZnO defects photocatalysts have been confirmed to be one of the ultimate promising entrants for photocatalyst scheming.
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Bettoni M, Falcinelli S, Rol C, Rosi M, Sebastiani GV. Gas-Phase TiO2 Photosensitized Mineralization of Some VOCs: Mechanistic Suggestions through a Langmuir–Hinshelwood Kinetic Approach. Catalysts 2021; 11:20. [DOI: 10.3390/catal11010020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A jointed experimental and theoretical investigation pointing out new insights about the microscopic mechanism of the volatile organic compounds (VOCs) photocatalytic elimination by TiO2 was done. Methane, hexane, isooctane, acetone and methanol were photomineralized in a batch reactor. Values of K (adsorption constant on TiO2) and k (mineralization rate constant) of the five VOCs (treating the kinetic data through a Langmuir–Hinshelwood approach) were determined. Recorded K (in the range of 0.74 × 10−2–1.11 × 10−2 ppm−1) and k (in the range of 1.9–9.9 ppm min−1) values and performed theoretical calculations allowed us to suggest the involvement of an electron transfer step between the VOC and the hole, TiO2(h+), as the rate-determining one.
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Gusachenko EA, Lyulyukin MN, Kozlov DV. Effect of Corona Discharge Plasma and Ozone on the Rate of the Photocatalytic Oxidation of Acetone and Benzene Vapors. Catal Ind 2020. [DOI: 10.1134/s207005042002004x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Li Y, Liu F, Li M, Wang X, Qi X, Li W, Xue M, Wang Y, Han F. Synergetic effect between adsorption and photodegradation on rGO/TiO 2/ACF composites for dynamic toluene gaseous removal. Environ Sci Pollut Res Int 2020; 27:9866-9881. [PMID: 31927732 DOI: 10.1007/s11356-019-07565-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 12/29/2019] [Indexed: 06/10/2023]
Abstract
The toluene poses a serious threat to the atmospheric environment and human health. Herein, the reduced graphene oxide (rGO)/TiO2 immobilized on the activated carbon fiber (ACF) are fabricated by ultrasonic assisted sol-gel impregnation method to photodegrade dynamic toluene. Characterizations of rGO/TiO2/ACF composites reveal that the majority of graphene oxide (GO) is reduced to rGO and rGO/TiO2 is evenly loaded onto the ACF surface in the form of a smooth film. Furthermore, the photoelectrochemical experiments demonstrate both rGO and ACF can enhance significantly the separation efficiency of electron-hole pairs. The maximum removal efficiency of rGO/TiO2/ACF-0.75% can be up to 85% under ultraviolet irradiation. The rGO/TiO2/ACF exhibits more excellent adsorption and photodegradation activity for dynamic toluene than both rGO/TiO2 and ACF due to the synergetic effect rather than a simple linear combination of the rGO/TiO2 and ACF for toluene conversion. The possible photodegradation pathway is proposed according to intermediates measured by GC-MS, and adsorption coupling photocatalytic mechanisms are discussed.
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Affiliation(s)
- Yuwei Li
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
| | - Fang Liu
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China.
- State Key Laboratory of Petroleum Pollution Control, Beijing, 102206, People's Republic of China.
| | - Meng Li
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
| | - Xuye Wang
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
| | - Xuejin Qi
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
| | - Wei Li
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
| | - Ming Xue
- State Key Laboratory of Petroleum Pollution Control, Beijing, 102206, People's Republic of China
| | - Yongqiang Wang
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
- State Key Laboratory of Petroleum Pollution Control, Beijing, 102206, People's Republic of China
| | - Fenglei Han
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
- State Key Laboratory of Petroleum Pollution Control, Beijing, 102206, People's Republic of China
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Zhang S, Lu X. Treatment of wastewater containing Reactive Brilliant Blue KN-R using TiO 2/BC composite as heterogeneous photocatalyst and adsorbent. Chemosphere 2018; 206:777-783. [PMID: 29800882 DOI: 10.1016/j.chemosphere.2018.05.073] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 04/29/2018] [Accepted: 05/13/2018] [Indexed: 05/18/2023]
Abstract
Heterogeneous photocatalysis namely titanium dioxide (TiO2) supported on coconut shell biochar (BC) was synthesized by sol-gel method (calcined at 450 °C) in the paper, which was innovatively applied to the decolorization of Reactive Brilliant Blue KN-R. The transmission electron microscopy (TEM) and X-ray diffraction patterns (XRD) results demonstrated that anatase TiO2 film was firmly immobilized on the surface and pores of BC. The photocatalysis tests under UV high pressure xenon lamp (300 W) showed highest decolorization efficiency occurred at strong acid and alkali conditions (pH = 1 and 11) reached as 99.71% and 96.99% respectively within 60 min. Therefore, the TiO2/BC composites demonstrated both photocatalytic and adsorption capacity on KN-R decolorized, and presented quite durable and reusable in regeneration cycles, indicating a widely application possibility in anthraquinones dyeing wastewater treatment.
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Affiliation(s)
- Shici Zhang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Xujie Lu
- School of Ocean Science and Technology, Hainan Tropical Ocean University, Sanya, 572022, China.
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Li M, Lu B, Ke QF, Guo YJ, Guo YP. Synergetic effect between adsorption and photodegradation on nanostructured TiO 2/activated carbon fiber felt porous composites for toluene removal. J Hazard Mater 2017; 333:88-98. [PMID: 28342359 DOI: 10.1016/j.jhazmat.2017.03.019] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Revised: 03/04/2017] [Accepted: 03/08/2017] [Indexed: 05/24/2023]
Abstract
The low quantum efficiency and limited adsorption efficiency of TiO2 makes it only fit for the removal of VOCs with low concentrations. Herein, we for the first time fabricated nanostructured TiO2/activated carbon fiber felt (TiO2/ACFF) porous composites by the in situ deposition of TiO2 microspheres on the carbon fibers in ACFF. Interestingly, the TiO2 microspheres exhibit hierarchical nanostructures constructed by nanocrystals as building blocks. The TiO2/ACFF porous composites possess excellent adsorption and photodegradation properties for toluene because of the synergetic effects between the nanostructured TiO2 and ACFF. The adsorption efficiencies of the TiO2/ACFF porous composites reach approximately 98% at the toluene concentration (<1150ppm) and approximately 77% even at the high concentration of 6900ppm. Moreover, the ACFF in the TiO2/ACFF porous composites significantly enhances photocatalytic property for toluene by hindering the recombination of electron-hole pairs, reducing the TiO2 band gap energy (Eg) to 2.95eV and accelerating toluene adsorption. At the toluene concentrations of 230ppm and 460ppm, the photocatalytic oxidation efficiency of toluene into CO2 arrives at 100% and 81.5%, respectively. Therefore, the TiO2/ACFF porous composites with synergetic adsorption and photocatalytic activities have great potentials for toluene removal.
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Affiliation(s)
- Min Li
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Bin Lu
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Qin-Fei Ke
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Ya-Jun Guo
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Ya-Ping Guo
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China.
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Stucchi M, Bianchi CL, Pirola C, Cerrato G, Morandi S, Argirusis C, Sourkouni G, Naldoni A, Capucci V. Copper NPs decorated titania: A novel synthesis by high energy US with a study of the photocatalytic activity under visible light. Ultrason Sonochem 2016; 31:295-301. [PMID: 26964952 DOI: 10.1016/j.ultsonch.2016.01.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 12/24/2015] [Accepted: 01/14/2016] [Indexed: 05/12/2023]
Abstract
The most important drawback of the use of TiO2 as photocatalyst is its lack of activity under visible light. To overcome this problem, the surface modification of commercial micro-sized TiO2 by means of high-energy ultrasound (US), employing CuCl2 as precursor molecule to obtain both metallic copper as well as copper oxides species at the TiO2 surface, is here. We have prepared samples with different copper content, in order to evaluate its impact on the photocatalytic performances of the semiconductor, and studied in particular the photodegradation in the gas phase of some volatile organic molecules (VOCs), namely acetone and acetaldehyde. We used a LED lamp in order to have only the contribution of the visible wavelengths to the TiO2 activation (typical LED lights have no emission in the UV region). We employed several techniques (i.e., HR-TEM, XRD, FT-IR and UV-Vis) in order to characterize the prepared samples, thus evidencing different sample morphologies as a function of the various copper content, with a coherent correlation between them and the photocatalytic results. Firstly, we demonstrated the possibility to use US to modify the TiO2, even when it is commercial and micro-sized as well; secondly, by avoiding completely the UV irradiation, we confirmed that pure TiO2 is not activated by visible light. On the other hand, we showed that copper metal and metal oxides nanoparticles strongly and positively affect its photocatalytic activity.
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Affiliation(s)
- Marta Stucchi
- University of Milan, Via Golgi 19, 20133 Milan, Italy; Consorzio INSTM, Firenze, Italy.
| | - Claudia L Bianchi
- University of Milan, Via Golgi 19, 20133 Milan, Italy; Consorzio INSTM, Firenze, Italy
| | - Carlo Pirola
- University of Milan, Via Golgi 19, 20133 Milan, Italy; Consorzio INSTM, Firenze, Italy
| | - Giuseppina Cerrato
- University of Turin & NIS Inter-departmental Centre, Turin, Italy; Consorzio INSTM, Firenze, Italy
| | - Sara Morandi
- University of Turin & NIS Inter-departmental Centre, Turin, Italy; Consorzio INSTM, Firenze, Italy
| | - Christos Argirusis
- National Technical University of Athens, School of Chemical Engineering, 15780 Athens, Greece
| | - Georgia Sourkouni
- Clausthaler Zentrum für Materialtechnik, Agricola Str. 2, 38678 Clausthal-Zelelrfeld, Germany
| | - Alberto Naldoni
- CNR - Istituto di Scienze e Tecnologie Molecolari, Via C. Golgi 19, Milano 20133, Italy
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Liang X, Wang L, Ma F, Lou H, Jiang X, Li Z. Degradation of atrazine from the riparian zone with a PEC system based on an anode of N–S–TiO2 nanocrystal-modified TiO2 nanotubes and an activated carbon photocathode. RSC Adv 2016. [DOI: 10.1039/c6ra11256k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, we developed a photoelectrochemical (PEC) system based on an anode of N–S–TiO2 nanocrystal-modified TiO2 nanotubes and an activated carbon photocathode to degrade atrazine from the riparian zone.
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Affiliation(s)
- Xiongwei Liang
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Li Wang
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Fang Ma
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Huan Lou
- College of Physics and Electronic Engineering
- Henan Normal University
- Xinxiang 453007
- China
| | - Xiaofeng Jiang
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Zhe Li
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090
- China
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Delavari S, Amin NAS. Photocatalytic Conversion of Carbon Dioxide and Methane Over Titania Nanoparticles Coated Mesh: Optimization Study. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.egypro.2014.12.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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