Photocatalytically active filtration systems based on modified with titanium dioxide PET-membranes

Kutuzau, Maksim; Shumskaya, Elena; Kaniukov, Egor; Alisienok, O. A.; Shidlouskaya, V.; Melnikova, G. B.; Shemukhin, A. A.; Nazarov, A. V.; Kozlovskiy, Artem L.; Zdorovets, Maxim V.

doi:10.1016/j.nimb.2019.01.028

Cited by 11 publications

(9 citation statements)

References 10 publications

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“…The immersion of PES membrane into a TiO 2 colloidal suspension and a subsequent UV irradiation were determined as the optimum conditions for the higher flux and higher antifouling properties of the PMs. In addition, photocatalytically active filtration systems were prepared by M. Kutuzau et al [78] based on PET membrane modified with TiO 2 nanoparticles. In this work, PMs are formed by two-step hydrolysis of TiO 2 on the surface of PET membranes including the hydrated TiO 2 precipitation from solutions of titanium tetrachloride and the peptization in a mixture of nitric and hydrochloric acids.…”

Section: Inorganic-polymer Hybrid Materials For Photocatalytic Applic...mentioning

confidence: 99%

Hybrid Organic–Inorganic Membranes for Photocatalytic Water Remediation

et al. 2022

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Mismanagement, pollution and excessive use have depleted the world’s water resources, producing a shortage that in some territories is extreme. In this context, the need for potable water prompts the development of new and more efficient wastewater treatment systems to overcome shortages by recovering and reusing contaminated water. Among the water treatment methods, membrane technology is considered one of the most promising. Besides, photocatalytic degradation has become an attractive and efficient technology for water and wastewater treatment. However, the use of unsupported catalysts has as its main impediment their separation from the water once treated. With this, providing the membranes with this photocatalyzed degradation capacity can improve the application of photocatalysts, since in many cases their application improves their recovery and reuse. This review describes the general photocatalytic processes of the main inorganic nanoparticles used as fillers in hybrid polymeric membranes. In addition, the most recent hybrid organic–inorganic membranes are reviewed. Finally, the membranes formed by metal–organic frameworks that can be considered one of the newest and most versatile developments are described.

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Section: Inorganic-polymer Hybrid Materials For Photocatalytic Applic...mentioning

confidence: 99%

Hybrid Organic–Inorganic Membranes for Photocatalytic Water Remediation

et al. 2022

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“…Alkaline hydrolysis improves the hydrophilicity of PET fabrics, while increasing the fiber surface roughness and inter fiber/inter yarn capillary space; (Görgülüer et al, 2021); prepared super hydrophobic titanium dioxide (TiO 2 )-polydimethylsiloxane (PDMS)-silver nanoparticles (Ag NPs) coatings on fabrics by a simple impregnation method. The layer exhibit super hydrophobicity; (Kutuzau et al, 2019); designed a «PET TM + TiO 2 » modified TiO 2 PET film for photo catalytically active filtration system; (Cheng et al, 2017); Multilayer nanocomposite films with excellent UV protection were successfully prepared by depositing negatively and positively charged TiO 2 nanoparticles on PET films; (Xu and Li, 2021); Super hydrophobic TiO 2 /SiO 2 nanoparticle-coated metal meshes, sponges, and loofahs were prepared by a simple spray method; (Zhou et al, 2006); TiO 2 -SiO 2 thin films with high photocatalytic activity were prepared on modified PET substrates at low temperature by an advanced sol-gel method. After the PET substrate was modified with a silane coupling agent, the adhesion between the TiO 2 -SiO 2 film and the substrate was improved.…”

Section: Figurementioning

confidence: 99%

Fabrication of hydrophilic and hydrophobic membranes inspired by the phenomenon of water absorption and storage of cactus

Shi

Kim

2022

Front. Mater.

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Water shortage has become one of the most severe practical problems facing humans. Thus, an efficient and economic water-harvesting technology is urgent to develop. In this work, to prepare samples of hydrophilic and hydrophobic bilayer structures, three kinds of hydrophobic polyethylene terephthalate (PET) fibers with different pore diameters were dip coated to fabricate hydrophobic surfaces, which showed different hydrophobic effects. TiO2 was then sprayed onto the hydrophobic surface to form irregular protrusions and to increase surface roughness and surface energy. The distribution amount of TiO2 was controlled by adjusting the spraying distance of TiO2. Finally, ultraviolet irradiation was performed. The light response made the protrusions super hydrophilic and improved the capture of mist and moisture by increasing the surface wettability and Laplace pressure. Water-collection test was performed for samples with different spraying distances irradiated by ultraviolet rays. The spraying distance with the best water-collection efficiency was achieved. The hydrophilic surface (particles) was attached to a hydrophobic membrane, which quickly and effectively captured the mist and converted it to water, thereby easily discharging a large amount of water. This study is expected to promote the development of fogging drainage and alleviate the problem of water shortage.

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“…Among many functional nanomaterials, nanostructured TiO 2 are of great interest due to their unique properties and numerous practical applications [ 14 , 15 , 16 , 17 ]. The main interest in titania-based nanomaterials is basically associated with such high-efficient applications as lithium-ion batteries, solar cells, gas sensors, supercapacitors, etc., [ 18 , 19 , 20 , 21 , 22 , 23 ]. Moreover, active investigations are related to the photocatalytic activity of titania-based materials, including nanopowders and thin films [ 24 , 25 , 26 , 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

2D Slab Models of Nanotubes Based on Tetragonal TiO2 Structures: Validation over a Diameter Range

et al. 2021

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One-dimensional nanomaterials receive much attention thanks to their advantageous properties compared to simple, bulk materials. A particular application of 1D nanomaterials is photocatalytic hydrogen generation from water. Such materials are studied not only experimentally, but also computationally. The bottleneck in computations is insufficient computational power to access realistic systems, especially with water or another adsorbed species, using computationally expensive methods, such as ab initio MD. Still, such calculations are necessary for an in-depth understanding of many processes, while the available approximations and simplifications are either not precise or system-dependent. Two-dimensional models as an approximation for TiO2 nanotubes with (101) and (001) structures were proposed by our group for the first time in Comput. Condens. Matter journal in 2018. They were developed at the inexpensive DFT theory level. The principle was to adopt lattice constants from an NT with a specific diameter and keep them fixed in the 2D model optimization, with geometry modifications for one of the models. Our previous work was limited to studying one configuration of a nanotube per 2D model. In this article one of the models was chosen and tested for four different configurations of TiO2 nanotubes: (101) (n,0), (101) (0,n), (001) (n,0), and (001) (0,n). All of them are 6-layered and have rectangular unit cells of tetragonal anatase form. Results of the current study show that the proposed 2D model is indeed universally applicable for different nanotube configurations so that it can be useful in facilitating computationally costly calculations of large systems with adsorbates.

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Photocatalytically active filtration systems based on modified with titanium dioxide PET-membranes

Cited by 11 publications

References 10 publications

Hybrid Organic–Inorganic Membranes for Photocatalytic Water Remediation

Hybrid Organic–Inorganic Membranes for Photocatalytic Water Remediation

Fabrication of hydrophilic and hydrophobic membranes inspired by the phenomenon of water absorption and storage of cactus

2D Slab Models of Nanotubes Based on Tetragonal TiO2 Structures: Validation over a Diameter Range

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