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Luu CH, Nguyen N, Ta HT. Unravelling Surface Modification Strategies for Preventing Medical Device-Induced Thrombosis. Adv Healthc Mater 2024; 13:e2301039. [PMID: 37725037 PMCID: PMC11468451 DOI: 10.1002/adhm.202301039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/29/2023] [Indexed: 09/21/2023]
Abstract
The use of biomaterials in implanted medical devices remains hampered by platelet adhesion and blood coagulation. Thrombus formation is a prevalent cause of failure of these blood-contacting devices. Although systemic anticoagulant can be used to support materials and devices with poor blood compatibility, its negative effects such as an increased chance of bleeding, make materials with superior hemocompatibility extremely attractive, especially for long-term applications. This review examines blood-surface interactions, the pathogenesis of clotting on blood-contacting medical devices, popular surface modification techniques, mechanisms of action of anticoagulant coatings, and discusses future directions in biomaterial research for preventing thrombosis. In addition, this paper comprehensively reviews several novel methods that either entirely prevent interaction between material surfaces and blood components or regulate the reaction of the coagulation cascade, thrombocytes, and leukocytes.
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Affiliation(s)
- Cuong Hung Luu
- School of Environment and ScienceGriffith UniversityNathanQueensland4111Australia
- Queensland Micro‐ and Nanotechnology CentreGriffith UniversityNathanQueensland4111Australia
| | - Nam‐Trung Nguyen
- School of Environment and ScienceGriffith UniversityNathanQueensland4111Australia
- Queensland Micro‐ and Nanotechnology CentreGriffith UniversityNathanQueensland4111Australia
| | - Hang Thu Ta
- School of Environment and ScienceGriffith UniversityNathanQueensland4111Australia
- Queensland Micro‐ and Nanotechnology CentreGriffith UniversityNathanQueensland4111Australia
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2
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Ghasemi F, Fahimi-Kashani N, Bigdeli A, Alshatteri AH, Abbasi-Moayed S, Al-Jaf SH, Merry MY, Omer KM, Hormozi-Nezhad MR. Paper-based optical nanosensors – A review. Anal Chim Acta 2022; 1238:340640. [DOI: 10.1016/j.aca.2022.340640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 11/15/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022]
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3
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Synthesis of Palladium and Copper Nanoparticles Supported on TiO2 for Oxidation Solvent-Free Aerobic Oxidation of Benzyl Alcohol. Processes (Basel) 2021. [DOI: 10.3390/pr9091590] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The use of metal oxides as supports for palladium and copper (Pd–Cu) nanoalloys constitutes a new horizon for improving new active catalysts in very important reactions. From the literatures, Pd-based bimetallic nanostructures have great properties and active catalytic performance. In this work, nanostructures of titanium dioxide (TiO2) were used as supports for Pd–Cu nanoparticles catalysts. Palladium and copper were deposited on these supports using the sol-immobilisation method. The composite nanoalloys were characterized using transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The catalyst was evaluated for the oxidation of benzyl alcohol. The effect of the Cu–Pd ratio using sol-immobilization methods supported on TiO2 was investigated. The results show that monometallic Cu/TiO2 was observed to have a low activity. However, as soon as the catalyst contained any palladium, the activity increased with a significant increase in the selectivity towards isomerization products. The influence of support and temperature were investigated. Furthermore, the catalyst reusability was also tested for oxidation of benzyl alcohol reactions, by repeatedly performing the same reaction using the recovered catalyst. The Pd–Cu/TiO2 catalyst displayed better reusability even after several reactions
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4
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Sboui M, Lachheb H, Bouattour S, Gruttadauria M, La Parola V, Liotta LF, Boufi S. TiO 2/Ag 2O immobilized on cellulose paper: A new floating system for enhanced photocatalytic and antibacterial activities. ENVIRONMENTAL RESEARCH 2021; 198:111257. [PMID: 33974837 DOI: 10.1016/j.envres.2021.111257] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/06/2021] [Accepted: 04/26/2021] [Indexed: 06/12/2023]
Abstract
Paper-TiO2-Ag2O floating photocatalysts were produced under mild condition and their photocatalytic activity for the degradation of aromatic amine under sunlight stimulant was investigated. Characterizations by Raman, XRD, XPS, DRS and PL confirmed the presence of TiO2 and Ag2O, and the morphology of the appended TiO2/Ag2O layer was probed by FE-SEM. The photocatalytic activity of the prepared samples was investigated by the degradation of aniline (AN) in water under simulated sun-light illumination and constrained conditions, i.e. non-stirring and non-oxygenation. The presence of Ag2O combined with TiO2 was shown to improve the resistance of paper to bacteria attack, thus increasing the durability of the photocatalyst. Thanks to its hydrophobic character, the paper-TiO2-Ag2O NPs can be employed as useful floating photocatalyst and can be reused in continuous cycles.
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Affiliation(s)
- Mouheb Sboui
- Faculty of Sciences, University of Sfax, Laboratoire de Chimie Inorganique (LCI), Sfax BP1171-3018, Tunisia.
| | - Hinda Lachheb
- URCMEP (UR11ES85), Faculty of Sciences, University of Gabès, 6029, Gabès, Tunisia
| | - Soraa Bouattour
- Faculty of Sciences, University of Sfax, Laboratoire de Chimie Inorganique (LCI), Sfax BP1171-3018, Tunisia
| | - Michelangelo Gruttadauria
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Viale delle Scienze, Ed. 17, 90128, Palermo, Italy
| | - Valeria La Parola
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN-CNR), Via Ugo La Malfa 153, 90146, Palermo, Italy
| | - Leonarda Francesca Liotta
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN-CNR), Via Ugo La Malfa 153, 90146, Palermo, Italy.
| | - Sami Boufi
- Faculty of Sciences, University of Sfax, Laboratoire Sciences des Matériaux et Environnement (LSME), Sfax BP1171-3018, Tunisia.
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5
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Abstract
The interest in advanced photocatalytic technologies with metal oxide-based nanomaterials has been growing exponentially over the years due to their green and sustainable characteristics. Photocatalysis has been employed in several applications ranging from the degradation of pollutants to water splitting, CO2 and N2 reductions, and microorganism inactivation. However, to maintain its eco-friendly aspect, new solutions must be identified to ensure sustainability. One alternative is creating an enhanced photocatalytic paper by introducing cellulose-based materials to the process. Paper can participate as a substrate for the metal oxides, but it can also form composites or membranes, and it adds a valuable contribution as it is environmentally friendly, low-cost, flexible, recyclable, lightweight, and earth abundant. In term of photocatalysts, the use of metal oxides is widely spread, mostly since these materials display enhanced photocatalytic activities, allied to their chemical stability, non-toxicity, and earth abundance, despite being inexpensive and compatible with low-cost wet-chemical synthesis routes. This manuscript extensively reviews the recent developments of using photocatalytic papers with nanostructured metal oxides for environmental remediation. It focuses on titanium dioxide (TiO2) and zinc oxide (ZnO) in the form of nanostructures or thin films. It discusses the main characteristics of metal oxides and correlates them to their photocatalytic activity. The role of cellulose-based materials on the systems’ photocatalytic performance is extensively discussed, and the future perspective for photocatalytic papers is highlighted.
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6
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Sboui M, Cortés-Reyes M, Swaminathan M, Alemany LJ. Eco-friendly hybrid Paper-AgBr-TiO 2 for efficient photocatalytic aerobic mineralization of ethanol. CHEMOSPHERE 2021; 269:128703. [PMID: 33168280 DOI: 10.1016/j.chemosphere.2020.128703] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/14/2020] [Accepted: 10/17/2020] [Indexed: 06/11/2023]
Abstract
In this study, a facile and effective route to prepare hybrid photocatalysts (paper-TiO2, paper-TiO2-AgBr and paper-AgBr-TiO2) has been reported. The preparation procedure consisted of the direct adsorption of the previously synthesized titania nanoparticles (TiO2 sol) to generate the TiO2 nanosphere and the immersion process in an aqueous suspension of AgBr to form the AgBr nanoclusters on paper fibers. The synthesis technology is economic, efficient, environmentally friendly and easy to implement even at industrial scale. A cellulose-based structure with well dispersed TiO2 particles of around 1 μm and a pseudo-liquid coating of Ag+ and AgBr species was obtained. All the prepared photocatalysts demonstrated effective photocatalytic performance in gaseous phase ethanol degradation with simulated sunlight illumination, through the direct mineralization to CO2 and the parallel reaction via acetaldehyde degradation. A relevant improvement in the photocatalytic activity was noticed when TiO2 was associated with AgBr nanocrystals, with a higher effect observed when AgBr was loaded onto the paper surface prior to TiO2. Ag-Ti interaction reduces the pair recombination rate and increases the available charge carriers generating reactive OH- radicals from both Ag-species and TiO2, and O2- radicals from Ag+-AgBr species, which would be involved in the ethanol degradation process.
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Affiliation(s)
- Mouheb Sboui
- Departamento de Ingeniería Química, Facultad de Ciencias, Campus de Teatinos, Universidad de Málaga, Málaga, E-29071, Spain; University of Sfax, Faculty of Sciences, BP1171-3018, Sfax, Tunisia.
| | - Marina Cortés-Reyes
- Departamento de Ingeniería Química, Facultad de Ciencias, Campus de Teatinos, Universidad de Málaga, Málaga, E-29071, Spain.
| | - Meenakshisundaram Swaminathan
- Nanomaterials Laboratory, International Research Centre, Kalasalingam Academy of Research and Education, Krishnankoil, 626126, India
| | - Luis J Alemany
- Departamento de Ingeniería Química, Facultad de Ciencias, Campus de Teatinos, Universidad de Málaga, Málaga, E-29071, Spain
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7
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Cheng F, Verrelli E, Alharthi FA, Das S, Anthopoulos TD, Lai KT, Kemp NT, O'Neill M, Kelly SM. Solution-processable and photopolymerisable TiO 2 nanorods as dielectric layers for thin film transistors. RSC Adv 2020; 10:25540-25546. [PMID: 35518573 PMCID: PMC9055251 DOI: 10.1039/d0ra04445h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 06/23/2020] [Indexed: 11/23/2022] Open
Abstract
We report the fabrication of a solution-processed n-type Thin Film Transistor (TFT) with current on/off ratios of 104, a turn-on voltage (V ON) of 1.2 V and a threshold voltage (V T) of 6.2 V. The TFT incorporates an insoluble and intractable dielectric layer (k = 7-9) prepared in situ from solution-processed and then photopolymerised ligand-stabilised, inorganic/organic TiO2 nanorods. A solution processed zinc oxide (ZnO) layer acts as the semiconductor. The new surface-modified TiO2 nanorods were synthesised using a ligand replacement process with a monolayer coating of photopolymerisable 10-undecynylphosphonic acid (10UCYPA) to render them both soluble in common organic solvents and be photopolymerisable using UV-illumination after having been deposited on substrate surfaces from solution and drying.
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Affiliation(s)
- Fei Cheng
- Department of Chemistry & Biochemistry, University of Hull Cottingham Road Hull HU6 7RX UK
| | - Emanuele Verrelli
- Department of Physics & Mathematics, University of Hull Cottingham Road Hull HU6 7RX UK
| | - Fahad A Alharthi
- Department of Chemistry & Biochemistry, University of Hull Cottingham Road Hull HU6 7RX UK
- Department of Chemistry, College of Science, King Saud University P. O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Satyajit Das
- Centre for Plastic Electronics, Department of Physics, Blackett Laboratory, Imperial College London London SW7 2BW UK
| | - Thomas D Anthopoulos
- Centre for Plastic Electronics, Department of Physics, Blackett Laboratory, Imperial College London London SW7 2BW UK
- King Abdullah University of Science and Technology (KAUST), KAUST Solar Centre Thuwal 23955-6900 Saudi Arabia
| | - Khue T Lai
- Electronic Systems Design Centre, Energy Safety Research Institute, College of Engineering, Swansea University Bay Campus Swansea SA1 8EN UK
| | - Neil T Kemp
- Department of Physics & Mathematics, University of Hull Cottingham Road Hull HU6 7RX UK
| | - Mary O'Neill
- School of Science & Technology, Nottingham Trent University 50 Shakespeare Street Nottingham NG1 3LL UK
| | - Stephen M Kelly
- Department of Chemistry & Biochemistry, University of Hull Cottingham Road Hull HU6 7RX UK
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8
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Study of the Effect of Titanium Dioxide Hydrosol on the Photocatalytic and Mechanical Properties of Paper Sheets. MATERIALS 2020; 13:ma13061326. [PMID: 32183330 PMCID: PMC7143621 DOI: 10.3390/ma13061326] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/06/2020] [Accepted: 03/12/2020] [Indexed: 11/17/2022]
Abstract
Different amounts of a stable aqueous TiO2 hydrosol were used to fabricate paper sheets having photocatalytic activity. The TiO2 hydrosol was prepared in aqueous medium using titanium butoxide as precursor and acetic acid as catalyst for the hydrolysis of titanium butoxide. An aging process at room temperature and atmospheric pressure was finally applied to obtain crystalline anatase TiO2 hydrosol. The effects of different TiO2 hydrosol loadings on the mechanical strength and barrier properties of modified paper sheets were investigated in detail. The photocatalytic behavior of TiO2-modified paper sheets was investigated as well using methylene blue (MB) as target pollutant.
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9
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Paper Functionalized with Nanostructured TiO 2/AgBr: Photocatalytic Degradation of 2-Propanol under Solar Light Irradiation and Antibacterial Activity. NANOMATERIALS 2020; 10:nano10030470. [PMID: 32150928 PMCID: PMC7153616 DOI: 10.3390/nano10030470] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 02/28/2020] [Accepted: 02/29/2020] [Indexed: 11/17/2022]
Abstract
A facile method to produce paper–TiO2 decorated with AgBr nanoparticles by a mild hydrothermal process at 140 °C was reported. The synthesis method was based on the immersion of the paper in a ready-made suspension of TiO2/AgBr, comprising TiO2 sol solution prepared in acidic conditions and AgBr solution (10−4 M). A paper–TiO2 sample was prepared and used as reference. The formation of crystalline phases of titanium oxide (TiO2) and silver bromide (AgBr) was demonstrated by XRD, Raman and EDX analyses. The surface morphology of the TiO2–AgBr was investigated by Field Effect Scanning Electronic Microscopy (FE–SEM). The photocatalytic performances of the prepared material were evaluated in the degradation of 2-propanol in the gas phase, under simulated sunlight illumination. Its antibacterial properties against Escherichia coli (E. coli) were also assessed. The efficiency of photodegradation and the anti-bacterial properties of paper–TiO2–AgBr were attributed to an improvement in the absorption of visible light, the increased production of reactive oxygen species (ROS) and the low recombination of photogenerated charge carriers due to the synergistic effect between TiO2 and AgBr/Ag nanoparticles.
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10
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Shi Y, Huang J, Zeng G, Cheng W, Hu J. Photocatalytic membrane in water purification: is it stepping closer to be driven by visible light? J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.04.078] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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11
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Cheng F, Verrelli E, Alharthi FA, Kelly SM, O'Neill M, Kemp NT, Kitney SP, Lai KT, Mehl GH, Anthopoulos T. Lyotropic 'hairy' TiO 2 nanorods. NANOSCALE ADVANCES 2019; 1:254-264. [PMID: 36132481 PMCID: PMC9473231 DOI: 10.1039/c8na00054a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 07/19/2018] [Indexed: 06/15/2023]
Abstract
We report the synthesis of the first stable, solution-processable and photocrosslinkable hybrid organic/inorganic titanium dioxide nanorods as 'hairy rods' coated with phosphonate ligands with photoreactive coumarin groups located in a terminal position. The relationships between the chemical structure of the diethyl-ω-[(7-oxycoumaryl)-n-alkyl]phosphonate ligands on the ligand exchange rate (LER) and the solubility of the resultant ligand-stabilized titanium dioxide nanorods in organic solvents are elucidated. These TiO2 nanorods, with an organic ligand coating, are short enough (aspect ratio = 5-8) to be dissolved in chlorobenzene at high concentrations, but long enough to form lyotropic nematic liquid crystals. These colloidal solutions are used to deposit a thin, uniform layer of hybrid organic/inorganic TiO2 nanorods with their long axes in the plane of a flat, smooth substrate through a self-organization process. Standard photolithographic patterning creates an insoluble dielectric layer of the desired thickness, smoothness and uniformity and with a dielectric constant of sufficient magnitude, k = 8, suitable for the fabrication of multilayer, plastic electronic devices using solution-based fabrication techniques, such as ink-jet printing, used in roll-to-roll manufacturing.
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Affiliation(s)
- Fei Cheng
- School of Mathematics & Physical Sciences, University of Hull Cottingham Road Hull HU6 7RX UK
| | - Emanuele Verrelli
- School of Mathematics & Physical Sciences, University of Hull Cottingham Road Hull HU6 7RX UK
| | - Fahad A Alharthi
- School of Mathematics & Physical Sciences, University of Hull Cottingham Road Hull HU6 7RX UK
- Department of Chemistry, College of Science, King Saud University P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Stephen M Kelly
- School of Mathematics & Physical Sciences, University of Hull Cottingham Road Hull HU6 7RX UK
| | - Mary O'Neill
- School of Science & Technology, Nottingham Trent University 50 Shakespeare Street Nottingham NG1 3LL UK
| | - Neil T Kemp
- School of Mathematics & Physical Sciences, University of Hull Cottingham Road Hull HU6 7RX UK
| | - Stuart P Kitney
- Polar OLED, University of Hull Cottingham Road Hull HU6 7RX UK
| | - Khue T Lai
- Electronic Systems Design Centre, Energy Safety Research Institute, College of Engineering, Swansea University Bay Campus Swansea SA1 8EN UK
| | - Georg H Mehl
- School of Mathematics & Physical Sciences, University of Hull Cottingham Road Hull HU6 7RX UK
| | - Thomas Anthopoulos
- Centre for Plastic Electronics & Department of Physics, Blackett Laboratory, Imperial College London SW7 2BW UK
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
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12
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Nešić A, Gordić M, Davidović S, Radovanović Ž, Nedeljković J, Smirnova I, Gurikov P. Pectin-based nanocomposite aerogels for potential insulated food packaging application. Carbohydr Polym 2018; 195:128-135. [DOI: 10.1016/j.carbpol.2018.04.076] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Revised: 03/20/2018] [Accepted: 04/19/2018] [Indexed: 12/17/2022]
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13
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Sboui M, Bouattour S, Liotta LF, Parola VL, Gruttadauria M, Marcì G, Boufi S. Paper-TiO2 composite: An effective photocatalyst for 2-propanol degradation in gas phase. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.09.074] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Barhoum A, Samyn P, Öhlund T, Dufresne A. Review of recent research on flexible multifunctional nanopapers. NANOSCALE 2017; 9:15181-15205. [PMID: 28990609 DOI: 10.1039/c7nr04656a] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Traditional paper and papermaking have struggled with a declining market during the last few decades. However, the incorporation of nanotechnology into papermaking has brought possibilities to develop low-cost, biocompatible and flexible products with sophisticated functionalities. The functionality of nanopapers emerges from the intrinsic properties of the nanofibrous network, the additional loading of specific nanomaterials (NMs), or the additional deposition and patterning of thin films of nanomaterials on the paper surface. A successful development of functional nanopapers requires understanding how the nanopaper matrix, nanofillers, nanocoating pigments, nanoprinting inks, processing additives and manufacturing processes all interact to provide the intended functionality. This review addresses the emerging area of functional nanopapers. This review discusses flexible and multifunctional nanopapers, NMs being used in nanopaper making, manufacturing techniques, and functional applications that provide new important possibilities to utilize papermaking technology. The interface where NM research meets traditional papermaking has important implications for food packaging, energy harvesting and energy storage, flexible electronics, low-cost devices for medical diagnostics, and numerous other areas.
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Affiliation(s)
- Ahmed Barhoum
- Department of Materials and Chemistry (MACH), Vrije Universiteit Brussel (VUB), Brussels, Belgium.
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15
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Photocatalytic activity and antimicrobial properties of paper sheets modified with TiO2/Sodium alginate nanocomposites. Carbohydr Polym 2016; 148:194-9. [DOI: 10.1016/j.carbpol.2016.04.061] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 04/11/2016] [Accepted: 04/13/2016] [Indexed: 11/18/2022]
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16
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Ruokolainen M, Ollikainen E, Sikanen T, Kotiaho T, Kostiainen R. Oxidation of Tyrosine-Phosphopeptides by Titanium Dioxide Photocatalysis. J Am Chem Soc 2016; 138:7452-5. [PMID: 27268440 DOI: 10.1021/jacs.6b02472] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Protein phosphorylation has a key role in cell regulation. Oxidation of proteins, in turn, is related to many diseases and to aging, but the effects of phosphorylation on the oxidation of proteins and peptides have been rarely studied. The aim of this study was to examine the mechanistic effect of phosphorylation on peptide oxidation induced by titanium dioxide photocatalysis. The effect of phosphorylation was compared between nonphosphorylated and tyrosine phosphorylated peptides using electrospray tandem mass spectrometry. We observed that tyrosine was the most preferentially oxidized amino acid, but the oxidation reaction was significantly inhibited by its phosphorylation. The study also shows that titanium dioxide photocatalysis provides a fast and easy method to study oxidation reactions of biomolecules, such as peptides.
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Affiliation(s)
- Miina Ruokolainen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki , P.O. Box 56, Viikinkaari 5E, FI-00014 Helsinki, Finland
| | - Elisa Ollikainen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki , P.O. Box 56, Viikinkaari 5E, FI-00014 Helsinki, Finland
| | - Tiina Sikanen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki , P.O. Box 56, Viikinkaari 5E, FI-00014 Helsinki, Finland
| | - Tapio Kotiaho
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki , P.O. Box 56, Viikinkaari 5E, FI-00014 Helsinki, Finland.,Department of Chemistry, University of Helsinki , P.O. BOX 55, A.I. Virtasen aukio 1, FI-00014 Helsinki, Finland
| | - Risto Kostiainen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki , P.O. Box 56, Viikinkaari 5E, FI-00014 Helsinki, Finland
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17
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Sboui M, Bouattour S, Gruttadauria M, Liotta LF, La Parola V, Boufi S. Hybrid paper–TiO2 coupled with a Cu2O heterojunction: an efficient photocatalyst under sun-light irradiation. RSC Adv 2016. [DOI: 10.1039/c6ra20248a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hybrid paper–TiO2, paper–Cu2O–TiO2 and paper–TiO2–Cu2O photocatalysts were prepared via a non-hydrolytic sol–gel process followed by mild hydrothermal treatment to generate the TiO2 layer, and a reduction process to form the Cu2O nanoparticles.
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Affiliation(s)
- Mouheb Sboui
- University of Sfax
- Faculty of Science
- LCI
- BP1171-3018 Sfax
- Tunisia
| | - Soraa Bouattour
- University of Sfax
- Faculty of Science
- LCI
- BP1171-3018 Sfax
- Tunisia
| | - Michelangelo Gruttadauria
- Dipartimento Scienze e Tecnologie Biologiche
- Chimiche e Farmaceutiche (STEBICEF)
- Università degli Studi di Palermo
- 90128 Palermo
- Italy
| | | | - Valeria La Parola
- Istituto per lo Studio dei Materiali Nanostrutturati
- ISMN-CNR
- 90146-Palermo
- Italy
| | - Sami Boufi
- University of Sfax
- Faculty of Science
- LSME
- BP1171-3018 Sfax
- Tunisia
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18
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Li Y, Wang K, Wu J, Gu L, Lu Z, Wang X, Cao X. Synthesis of highly permeable Fe2O3/ZnO hollow spheres for printable photocatalysis. RSC Adv 2015. [DOI: 10.1039/c5ra17765k] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We present the deterministic synthesis of mixed-phase Fe2O3/ZnO hollow spheres with submicron pores and demonstrate that ink based on these hollow spheres can be used to manufacture stable photocatalytic papers.
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Affiliation(s)
- Yiming Li
- School of Biology and Chemical Engineering
- Jiaxing University
- Jiaxing
- China
| | - Kai Wang
- School of Materials and Textile Engineering
- Jiaxing University
- Jiaxing
- China
| | - Jun Wu
- School of Biology and Chemical Engineering
- Jiaxing University
- Jiaxing
- China
| | - Li Gu
- School of Materials and Textile Engineering
- Jiaxing University
- Jiaxing
- China
| | - Zhufeng Lu
- School of Biology and Chemical Engineering
- Jiaxing University
- Jiaxing
- China
| | - Xinjun Wang
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang 453007
- China
| | - Xuebo Cao
- School of Biology and Chemical Engineering
- Jiaxing University
- Jiaxing
- China
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19
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UV-stable paper coated with APTES-modified P25 TiO2 nanoparticles. Carbohydr Polym 2014; 114:246-252. [DOI: 10.1016/j.carbpol.2014.07.076] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 06/19/2014] [Accepted: 07/29/2014] [Indexed: 11/23/2022]
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Koce JD, Drobne D, Klančnik K, Makovec D, Novak S, Hočevar M. Oxidative potential of ultraviolet-A irradiated or nonirradiated suspensions of titanium dioxide or silicon dioxide nanoparticles on Allium cepa roots. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2014; 33:858-867. [PMID: 24812678 DOI: 10.1002/etc.2496] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The effect of ultraviolet-A irradiated or nonirradiated suspensions of agglomerates of titanium dioxide (TiO(2)) or silicon dioxide (SiO(2)) nanoparticles on roots of the onion (Allium cepa) has been studied. The reactive potential of TiO(2) nanoparticles, which have photocatalytic potential, and the nonphotocatalytic SiO(2) nanoparticles with the same size of agglomerates was compared. The authors measured the activity of antioxidant enzymes glutathione reductase, ascorbate peroxidase, guaiacol peroxidase, and catalase as well as lipid peroxidation to assess the oxidative stress in exposed A. cepa roots. A wide range of concentrations of nanoparticles was tested (0.1-1000 µg/mL). The sizes of agglomerates ranged in both cases from 300 nm to 600 nm, and the exposure time was 24 h. Adsorption of SiO(2) nanoparticles on the root surface was minimal but became significant when roots were exposed to TiO(2) agglomerates. No significant biological effects were observed even at high exposure concentrations of SiO(2) and TiO(2) nanoparticles individually. Plants appear to be protected against nanoparticles by the cell wall, which shields the cell membrane from direct contact with the nanoparticles. The authors discuss the need to supplement conventional phytotoxicity and stress end points with measures of plant physiological state when evaluating the safety of nanoparticles.
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Barhoum A, Rahier H, Abou-Zaied RE, Rehan M, Dufour T, Hill G, Dufresne A. Effect of cationic and anionic surfactants on the application of calcium carbonate nanoparticles in paper coating. ACS APPLIED MATERIALS & INTERFACES 2014; 6:2734-44. [PMID: 24456100 DOI: 10.1021/am405278j] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Modification of calcium carbonate particles with surfactant significantly improves the properties of the calcium carbonate coating on paper. In this study, unmodified and CTAB (hexadecyltetramethylammonium bromide)- and oleate-modified calcium carbonate nanoparticles were prepared using the wet carbonation technique for paper coating. CTAB (cationic surfactant) and sodium oleate (anionic surfactant) were used to modify the size, morphology, and surface properties of the precipitated nanoparticles. The obtained particles were characterized using X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, zeta potential measurements, thermal gravimetric analysis (TGA), and transmission electron microscopy (TEM). Coating colors were formulated from the prepared unmodified and modified calcium carbonates and examined by creating a thin coating layer on reference paper. The effect of calcium carbonate particle size and surface modification on paper properties, such as coating thickness, coating weight, surface roughness, air permeability, brightness, whiteness, opacity, and hydrophobicity, were investigated and compared with commercial ground (GCC) calcium carbonate-coated papers. The results show that the obtained calcium carbonate nanoparticles are in the calcite phase. The morphology of the prepared calcium carbonate nanoparticles is rhombohedral, and the average particle diameter is less than 100 nm. Compared to commercial GCC, the use of unmodified and CTAB- and oleate-modified calcium carbonate nanoparticles in paper coating improves the properties of paper. The highest measured paper properties were observed for paper coated with oleate-modifed nanoparticles, where an increase in smoothness (decrease in paper roughness) (+23%), brightness (+1.3%), whiteness (+2.8%), and opacity (+2.3%) and a decrease in air permeability (-26%) was obtained with 25% less coat weight. The water contact angle at a drop age time of 10 min was about 112° for the paper coated with oleate-modified nanoparticles and 42° for paper coated with CTAB-modified nanoparticles compared to 104° for GCC-coated paper.
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Affiliation(s)
- Ahmed Barhoum
- Department of Materials and Chemistry, Vrije Universiteit Brussel , Pleinlaan 2, 1050 Brussels, Belgium
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Photocatalytic performance of silver-modified TiO2 embedded in poly(ethyl-acrylate-co-methyl metacrylate) matrix. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-3063-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Cheng F, Lorch M, Sajedin SM, Kelly SM, Kornherr A. Whiter, brighter, and more stable cellulose paper coated with TiO2 /SiO2 core/shell nanoparticles using a layer-by-layer approach. CHEMSUSCHEM 2013; 6:1392-1399. [PMID: 23868805 DOI: 10.1002/cssc.201300305] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 05/18/2013] [Indexed: 06/02/2023]
Abstract
To inhibit the photocatalytic degradation of organic material supports induced by small titania (TiO2 ) nanoparticles, four kinds of TiO2 nanoparticles, that is, commercial P25-TiO2 , commercial rutile phase TiO2 , rutile TiO2 nanorods and rutile TiO2 spheres, prepared from TiCl4 , were coated with a thin, but dense, coating of silica (SiO2 ) using a conventional sol-gel technique to form TiO2 /SiO2 core/shell nanoparticles. These core/shell particles were deposited and fixed as a very thin coating onto the surface of cellulose paper samples by a wet-chemistry polyelectrolyte layer-by-layer approach. The TiO2 /SiO2 nanocoated paper samples exhibit higher whiteness and brightness and greater stability to UV-bleaching than comparable samples of blank paper. There are many potential applications for this green chemistry approach to protect cellulosic fibres from UV-bleaching in sunlight and to improve their whiteness and brightness.
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Affiliation(s)
- Fei Cheng
- Department of Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, United Kingdom
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Snyder A, Bo Z, Moon R, Rochet JC, Stanciu L. Reusable photocatalytic titanium dioxide–cellulose nanofiber films. J Colloid Interface Sci 2013; 399:92-8. [DOI: 10.1016/j.jcis.2013.02.035] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 02/20/2013] [Accepted: 02/22/2013] [Indexed: 02/01/2023]
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Ye L, Pelton R, Brook MA, Filipe CDM, Wang H, Brovko L, Griffiths M. Targeted Disinfection of E. coli via Bioconjugation to Photoreactive TiO2. Bioconjug Chem 2013; 24:448-55. [DOI: 10.1021/bc300581t] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lu Ye
- Department of Chemical
Engineering, Center for Pulp and Paper Research, McMaster University, 1280 Main Street, West Hamilton,
Ontario, Canada, L8S 4L7
| | - Robert Pelton
- Department of Chemical
Engineering, Center for Pulp and Paper Research, McMaster University, 1280 Main Street, West Hamilton,
Ontario, Canada, L8S 4L7
| | - Michael A. Brook
- Department of Chemistry
and Chemical Biology, McMaster University, 1280 Main Street, West Hamilton, Ontario, Canada, L8S 4M1
| | - Carlos D. M. Filipe
- Department of Chemical
Engineering, Center for Pulp and Paper Research, McMaster University, 1280 Main Street, West Hamilton,
Ontario, Canada, L8S 4L7
| | - Haifeng Wang
- Department of Food Science, University of Guelph, 43 McGillivray Street, Guelph,
Ontario, Canada, N1G 2W1
| | - Luba Brovko
- Department of Food Science, University of Guelph, 43 McGillivray Street, Guelph,
Ontario, Canada, N1G 2W1
| | - Mansel Griffiths
- Department of Food Science, University of Guelph, 43 McGillivray Street, Guelph,
Ontario, Canada, N1G 2W1
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Virkutyte J, Jegatheesan V, Varma RS. Visible light activated TiO2/microcrystalline cellulose nanocatalyst to destroy organic contaminants in water. BIORESOURCE TECHNOLOGY 2012; 113:288-293. [PMID: 22284756 DOI: 10.1016/j.biortech.2011.12.090] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 12/15/2011] [Accepted: 12/17/2011] [Indexed: 05/31/2023]
Abstract
Hybrid TiO(2)/microcrystalline cellulose (MC) nanophotocatalyst was prepared in situ by a facile and simple synthesis utilizing benign precursors such as MC and TiCl(4). The as-prepared nanocomposite was characterized by XRD, XPS, BET surface area analyzer, UV-vis DRS and TGA. Surface morphology was assessed by the means of SEM and HR-TEM. Statistics-based factorial design (FD) was adopted to investigate the effect of precursors concentrations and therefore to optimize the nanocomposite synthesis through catalytic adsorption of methylene blue (MB) from aqueous solutions. The results indicated that TiO(2)/MC nanocomposites were photocatalytically active in diminishing 40-90% of MB in 4h.
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Affiliation(s)
- Jurate Virkutyte
- Pegasus Technical Services Inc., 46 E. Hollister Street, Cincinnati, OH 45219, USA.
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Ngo YH, Li D, Simon GP, Garnier G. Paper surfaces functionalized by nanoparticles. Adv Colloid Interface Sci 2011; 163:23-38. [PMID: 21324427 DOI: 10.1016/j.cis.2011.01.004] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 01/13/2011] [Accepted: 01/13/2011] [Indexed: 10/18/2022]
Abstract
Nanomaterials with unique electronic, optical and catalytic properties have recently been at the forefront of research due to their tremendous range of applications. Taking gold, silver and titania nanoparticles as examples, we have reviewed the current research works on paper functionalized by these nanoparticles. The functionalization of paper with only a very small concentration of nanoparticles is able to produce devices with excellent photocatalytic, antibacterial, anti-counterfeiting, Surface Enhanced Raman Scattering (SERS) and Surface Plasmon Resonance (SPR) performances. This review presents a brief overview of the properties of gold, silver and titania nanoparticles which contribute to the major applications of nanoparticles-functionalized paper. Different preparation methods of the nanoparticles-functionalized paper are reviewed, focusing on their ability to control the morphology and structure of paper as well as the spatial location and adsorption state of nanoparticles which are critical in achieving their optimum applications. In addition, main applications of the nanoparticles-functionalized papers are highlighted and their critical challenges are discussed, followed by perspectives on the future direction in this research field. Whilst a few studies to date have characterized the distribution of nanoparticles on paper substrates, none have yet optimized paper as a nanoparticles' substrate. There remains a strong need to improve understanding on the optimum adsorption state of nanoparticles on paper and the heterogeneity effects of paper on the properties of these nanoparticles.
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Godinez IG, Darnault CJG. Aggregation and transport of nano-TiO2 in saturated porous media: effects of pH, surfactants and flow velocity. WATER RESEARCH 2011; 45:839-851. [PMID: 20947120 DOI: 10.1016/j.watres.2010.09.013] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2010] [Revised: 09/10/2010] [Accepted: 09/14/2010] [Indexed: 05/27/2023]
Abstract
Transport of manufactured nano-TiO(2) in saturated porous media was investigated as a function of morphology characteristics, pH of solutions, flow velocity, and the presence of anionic and non-ionic surfactants in different concentrations. Surfactants enhanced the transport of nano-TiO(2) in saturated porous media while a pH approaching the point of zero charge of nano-TiO(2) limited their transport. The deposition process, a retention mechanism of nano-TiO(2) in saturated porous media was impacted by surfactant and pH. In Dispersion 1 systems (pH 7), the size of the nano-TiO(2) aggregates was directly related to the presence of surfactants. The presence of non-ionic surfactant (Triton X-100) induced a size reduction of nano-TiO(2) aggregates that was dependent on the critical micelle concentration. In Dispersion 2 systems (pH 9), the stability provided by the pH had a significant effect on the size of nano-TiO(2) aggregates; the addition of surfactants did impact the size of the nano-TiO(2) aggregates but in less significance as compared to Dispersion 1 systems. The electrostatic and steric repulsion forces in connection with the size of nano-TiO(2) aggregates and flow velocity impacted the single-collector efficiency and attachment efficiency which dictated the maximum transport distance of nano-TiO(2) for the Dispersion 1 and Dispersion 2 systems. By doubling the flow velocity at pH 9, the No Surfactant, 50% CMC Triton X-100, 100% CMC Triton X-100 and 100% CMC SDBS dispersion systems allowed nano-TiO(2) to attain maximum transport distances of 0.898, 2.17, 2.29 and 1.12 m, respectively. Secondary energy minima played a critical role in the deposition mechanisms of nano-TiO(2). Nano-TiO(2) deposited in the secondary energy wells may be released because of changes in solution chemistry. The deposition of nano-TiO(2) in primary and secondary energy minima, the reversibility of their deposition should be characterized to analyze the transport of nanoparticles in porous media. This is necessary to assess the risk of nanoparticles to the environment and public health.
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Affiliation(s)
- Itzel G Godinez
- Department of Civil and Materials Engineering, University of Illinois at Chicago, Chicago, IL 60607, USA
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Baruah S, Jaisai M, Imani R, Nazhad MM, Dutta J. Photocatalytic paper using zinc oxide nanorods. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2010; 11:055002. [PMID: 27877367 PMCID: PMC5090626 DOI: 10.1088/1468-6996/11/5/055002] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Revised: 11/29/2010] [Accepted: 09/28/2010] [Indexed: 05/27/2023]
Abstract
Zinc oxide (ZnO) nanorods were grown on a paper support prepared from soft wood pulp. The photocatalytic activity of a sheet of paper with ZnO nanorods embedded in its porous matrix has been studied. ZnO nanorods were firmly attached to cellulose fibers and the photocatalytic paper samples were reused several times with nominal decrease in efficiency. Photodegradation of up to 93% was observed for methylene blue in the presence of paper filled with ZnO nanorods upon irradiation with visible light at 963 Wm-2 for 120 min. Under similar conditions, photodegradation of approximately 35% was observed for methyl orange. Antibacterial tests revealed that the photocatalytic paper inhibits the growth of Escherichia coli under room lighting conditions.
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Affiliation(s)
- Sunandan Baruah
- Center of Excellence in Nanotechnology, School of Engineering and Technology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
| | - Mayuree Jaisai
- Center of Excellence in Nanotechnology, School of Engineering and Technology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
| | - Reza Imani
- Center of Excellence in Nanotechnology, School of Engineering and Technology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
- Now at: Wood and Paper Department, Islamic Azad University, Tehran, Iran
| | - Mousa M Nazhad
- Center of Excellence in Nanotechnology, School of Engineering and Technology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
| | - Joydeep Dutta
- Center of Excellence in Nanotechnology, School of Engineering and Technology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
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31
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Progress of applied research on TiO2 photocatalysis-membrane separation coupling technology in water and wastewater treatments. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s11434-010-0171-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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32
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Ho DP, Vigneswaran S, Ngo HH. Integration of Photocatalysis and Microfiltration in Removing Effluent Organic Matter from Treated Sewage Effluent. SEP SCI TECHNOL 2010. [DOI: 10.1080/01496390903418014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ho D, Vigneswaran S, Ngo H. Photocatalysis-membrane hybrid system for organic removal from biologically treated sewage effluent. Sep Purif Technol 2009. [DOI: 10.1016/j.seppur.2009.04.019] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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34
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Ye L, Filipe CDM, Kavoosi M, Haynes CA, Pelton R, Brook MA. Immobilization of TiO2 nanoparticles onto paper modification through bioconjugation. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b818410k] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Medina-Valtierra J, Frausto-Reyes C, Ramírez-Ortiz J, Camarillo-Martínez G. Self-Cleaning Test of Doped TiO2-Coated Glass Plates under Solar Exposure. Ind Eng Chem Res 2008. [DOI: 10.1021/ie8008555] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jorge Medina-Valtierra
- Departamento de Ingeniería Química y Bioquímica, Instituto Tecnológico de Aguascalientes, Av. A. López Mateos Ote. No. 1801, Fracc. Bona Gens, Aguascalientes 20256, México, Centro de Investigaciones en Óptica A.C., Unidad Aguascalientes, Prol. Constitución No. 607, Fracc. Reserva de Loma Bonita, Aguascalientes 20200, México, Unidad Académica de Ciencias Químicas, Universidad Autónoma de Zacatecas, Ciudad Universitaria−Siglo XXI, Km. 6 Carr. Zacatecas-Guadalajara, Ejido La Escondida, Zacatecas, 98160,
| | - Claudio Frausto-Reyes
- Departamento de Ingeniería Química y Bioquímica, Instituto Tecnológico de Aguascalientes, Av. A. López Mateos Ote. No. 1801, Fracc. Bona Gens, Aguascalientes 20256, México, Centro de Investigaciones en Óptica A.C., Unidad Aguascalientes, Prol. Constitución No. 607, Fracc. Reserva de Loma Bonita, Aguascalientes 20200, México, Unidad Académica de Ciencias Químicas, Universidad Autónoma de Zacatecas, Ciudad Universitaria−Siglo XXI, Km. 6 Carr. Zacatecas-Guadalajara, Ejido La Escondida, Zacatecas, 98160,
| | - Jorge Ramírez-Ortiz
- Departamento de Ingeniería Química y Bioquímica, Instituto Tecnológico de Aguascalientes, Av. A. López Mateos Ote. No. 1801, Fracc. Bona Gens, Aguascalientes 20256, México, Centro de Investigaciones en Óptica A.C., Unidad Aguascalientes, Prol. Constitución No. 607, Fracc. Reserva de Loma Bonita, Aguascalientes 20200, México, Unidad Académica de Ciencias Químicas, Universidad Autónoma de Zacatecas, Ciudad Universitaria−Siglo XXI, Km. 6 Carr. Zacatecas-Guadalajara, Ejido La Escondida, Zacatecas, 98160,
| | - Gabriela Camarillo-Martínez
- Departamento de Ingeniería Química y Bioquímica, Instituto Tecnológico de Aguascalientes, Av. A. López Mateos Ote. No. 1801, Fracc. Bona Gens, Aguascalientes 20256, México, Centro de Investigaciones en Óptica A.C., Unidad Aguascalientes, Prol. Constitución No. 607, Fracc. Reserva de Loma Bonita, Aguascalientes 20200, México, Unidad Académica de Ciencias Químicas, Universidad Autónoma de Zacatecas, Ciudad Universitaria−Siglo XXI, Km. 6 Carr. Zacatecas-Guadalajara, Ejido La Escondida, Zacatecas, 98160,
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Chen XQ, Shen WH, Liu HB. Particle Size Control of Nanocrystalline Anatase TiO2Synthesized by Hydrolysis of Titanyl Organic Compounds. Chem Eng Technol 2008. [DOI: 10.1002/ceat.200800377] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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37
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Chen XQ, Shen WH. Preparation and Properties of Stable Nanocrystalline Anatase TiO2Colloids. Chem Eng Technol 2008. [DOI: 10.1002/ceat.200700450] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Wang S, Wang T, Chen W, Hori T. Phase-selectivity photocatalysis: a new approach in organic pollutants’ photodecomposition by nanovoid core(TiO2)/shell(SiO2) nanoparticles. Chem Commun (Camb) 2008:3756-8. [DOI: 10.1039/b802127a] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Mounir B, Pons MN, Zahraa O, Yaacoubi A, Benhammou A. Discoloration of a red cationic dye by supported TiO(2) photocatalysis. JOURNAL OF HAZARDOUS MATERIALS 2007; 148:513-20. [PMID: 17459576 DOI: 10.1016/j.jhazmat.2007.03.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2006] [Revised: 03/01/2007] [Accepted: 03/05/2007] [Indexed: 05/15/2023]
Abstract
The degradation under UV, visible and sunlight irradiation of C.I. Basic Red 46 (BR 46) dye used for acrylic fibers dyeing has been studied in a lab-scale continuous system with two different immobilized TiO(2) systems. Catalyst I was based on TiO(2) particles deposited on cellulose fibers; Catalyst II combined TiO(2) particles deposited on a layer of cellulose fibers (as in Catalyst I) with a layer of carbon fibers and finally a layer of cellulose fibers. The treatment of aqueous dye solutions and industrial wastewater contaminated with the same dye has been evaluated in terms of color removal and chemical oxygen demand (COD) decrease. With UV light, aqueous solutions containing dye were decolorized slightly more rapidly with Catalyst II than with Catalyst I. Sunlight was also very effective and experiments involving sunlight irradiation showed Catalyst II to be the more efficient, giving more than 90% discoloration after 20 min of treatment. Comparing the discoloration yield by adsorption or under visible light for both catalysts, it was observed that the difference between them is below 5%. The adsorption kinetics was found to follow a second-order rate law for Catalyst I and a first-order rate law for Catalyst II. The kinetics of photocatalytic degradation under UV or sunlight were found to follow a first-order rate law for both catalytic systems. Under sunlight the COD removal yield for textile wastewater reaches 33% with Catalyst I against 93% with Catalyst II.
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Affiliation(s)
- B Mounir
- Ecole Supérieure de Technologie de Safi, Université Cadi Ayyad, BP 89, Route Dar Si Aissa, Safi, Morocco
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40
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Ye L, Pelton R, Brook MA. Biotinylation of TiO(2) nanoparticles and their conjugation with streptavidin. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:5630-7. [PMID: 17402752 DOI: 10.1021/la0626656] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Photoactive TiO(2) can be used to mediate a variety of disinfection processes. It was postulated that TiO(2) particles could be directed to specific targets of interest using biotin/streptavidin linkages. Biotinylated TiO(2) nanoparticles (anatase) were obtained by treating TiO(2) nanoparticles with 3-aminopropyltriethoxysilane (APTS) in anhydrous DMSO, followed by reaction with N-hydroxysuccinimidobiotin. 29Si CP-MAS NMR, 13C CP-MAS NMR, and FTIR spectra showed that biotin was covalently bound to the TiO(2) surface. Transmission electron microscopy (TEM) demonstrated that prolonging the silanization reaction times led to increasingly thick silsesquioxane coating layers of up to approximately 10 nm. The specific surface area (SSA) of the TiO2 particles decreased from 16 m(2) g(-1) before treatment to 9.1 m(2) g(-1) after aminosilanization and to 8.4 m(2) g(-)1 after biotinylation, as measured by nitrogen adsorption. Amino surfaces modified for 4, 16, and 26 h had total amino group densities ranging from 2.9 to 26 to 66 nm(-2), respectively, whereas accessible surface amino group densities ranged from 2.7 to 10 to 17 nm(-2) as shown from nitrogen adsorption, polyelectrolyte titration, conductometric titration, and biotin assays. Not all the amino groups were accessible for biotinylation: the densities of active biotin were found to be 2.1, 7.0, and 11.5 nm(-2). The ability of the attached biotin to bind to streptavidin was demonstrated by confocal microscopy with the use of fluorescently labeled streptavidin-FITC. Although streptavidin was readily able to bind to biotinylated TiO(2) particles, it did not act as a strong flocculating agent for the biotinylated TiO2 particles. The implications of these observations, with respect to particle accessibility to tethered streptavidin, are discussed.
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Affiliation(s)
- Lu Ye
- Department of Chemical Engineering, Center for Pulp and Paper Research, and Department of Chemistry, McMaster University, 1280 Main Street, West Hamilton, Ontario, Canada L8S 4L7
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Mahltig B, Gutmann E, Meyer DC, Reibold M, Dresler B, Günther K, Faßler D, Böttcher H. Solvothermal preparation of metallized titania sols for photocatalytic and antimicrobial coatings. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b702519j] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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