Low temperature processed titanium oxide thin-film using scalable wire-bar coating

Arulkumar, S.; Parthiban, S.; Goswami, Anandarup; Varma, Rajender S.; Naushad, Mu.; Gawande, Manoj B.

doi:10.1088/2053-1591/ab5eed

Cited by 9 publications

(8 citation statements)

References 35 publications

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“…S1, † indicating the formation of 2D nanostructures. The HRTEM images of ternary alloy nanosheets exhibit lattice spacings of 0.16 nm and 0.27 nm, indicating the formation of the (110) and (100) planes 43 (Fig. 1a) respectively, and the discrete fast Fourier transform (FFT) pattern (inset of Fig.…”

Section: Resultsmentioning

confidence: 99%

TMDC ternary alloy–based triboelectric nanogenerators with giant photo-induced enhancement

Bhattacharya,

Mukherjee,

Mitra

et al. 2023

Nanoscale

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Section: Resultsmentioning

confidence: 99%

TMDC ternary alloy–based triboelectric nanogenerators with giant photo-induced enhancement

Bhattacharya,

Mukherjee,

Mitra

et al. 2023

Nanoscale

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“…The TiO 2 ink was synthesized using a sol-gel method as reported in [31][32][33]. The TiO 2 sol-gel ink was synthesized using a three-necked, 250 mL, round-bottom flask.…”

Section: Tio 2 Ink Synthesismentioning

confidence: 99%

Rapid and Scalable Wire-bar Strategy for Coating of TiO2 Thin-films: Effect of Post-Annealing Temperatures on Structures and Catalytic Dye-Degradation

et al. 2020

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Titanium dioxide (TiO 2 ) thin films were rapidly coated on Corning glass substrates from the precursor solution using the wire-bar technique at the room temperature and then post-annealed at 400, 500 and 600 • C for 1 h under atmospheric conditions. The structural, morphological, optical, wettability and photocatalytic properties of the films were studied. X-ray diffraction analysis confirmed the formation of an anatase TiO 2 structure irrespective of the post-annealing temperatures. The optical transparency of the films in the visible range was measured to be > 70%. A water contact angle (WCA) of~0 • was observed for TiO 2 thin-film, post-annealed at 400 • C and 500 • C. However, WCA of 40.3 • was observed for post-annealed at 600 • C. The photocatalytic dye-degradation using post-annealed thin-film was investigated indicating a steady improvement in the dye-degradation percentage (from 24.3 to 29.4%) with the increase of post-annealing temperature. The demonstrated TiO 2 thin-films deposited by wire-bar coating technique showed promises for the manufacturing of large-area cost-effective self-cleaning window glass.Molecules 2020, 25, 1683 2 of 13 sheeting water and the later by rolling water droplets that carries away dirt [8]. The superhydrophilic and superhydrophobic properties are attractive in self-cleaning applications and are commonly evaluated based on the water contact angles (WCAs) with the material/surface. WCAs of <5 • and >150 • are called superhydrophilic and superhydrophobic materials respectively [8]. The superhydrophilic material when employed on a substrate/surface leads to the formation of uniform thin layer of water upon contact and gradually carries away dust particles from the surface [9]. In contrast, hydrophobic surfaces accumulate small water droplets, leading to deterioration of transparency [7,9]. In the current context, TiO 2 thin layers are capable of photocatalytically degrading the organic pollutants present on glass and tiles and irregular shapes on solid surfaces when irradiated with UV light or sun light [8,9]. The decomposed organic pollutant or dirt can be washed away by sheeting water without the need of additional mechanical cleaning due to its superhydrophilic nature [7,8]. Recently, the scope of superhydrophilic and photocatalytic TiO 2 thin-films has been widened to air purification for the effective decomposition (and the subsequent removal) of nitrogen oxide (NO x ), formaldehyde, benzene and other volatile organic compounds (VOCs) [10][11][12]. The air purification processes convert toxic gases to harmless compounds like nitrate ions that are ultimately washed into the soil and help to fertilize plants [10]. The unique wettability and non-toxic properties of TiO 2 materials are also employed in biomedical applications where surface wettability can play an important role in protein adsorption, cell adhesion and proliferation [9]. Moreover, the antibacterial, self-cleaning, and anti-odour properties of TiO 2 films deposited on fibres, textile, cotton, etc. also allow thi...

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“…One of the most used methods for the application of functional molecules involves using water as a solvent or suspension medium [ 40 , 41 , 42 , 43 , 44 ], thanks to its good environmental and economic advantages. Many techniques have been developed for the application of water dispersions or solutions of active molecules, such as flexography [ 45 ], roll-to-roll [ 46 , 47 ], wire-bar [ 48 ], blade [ 49 ], and spray [ 50 , 51 ]. In particular, in the paper industry, the application of a coating on the surface of paper substrates enables the increase in properties such as water vapor or gas barriers [ 52 , 53 ], and antimicrobial [ 54 ] or antioxidant activities [ 55 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Functional Bio-Based Coatings Including Chitin Nanofibrils or Polyphenols on Mechanical Properties of Paper Tissues

et al. 2022

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The paper tissue industry is a constantly evolving sector that supplies markets that require products with different specific properties. In order to meet the demand of functional properties, ensuring a green approach at the same time, research on bio-coatings has been very active in recent decades. The attention dedicated to research on functional properties has not been given to the study of the morphological and mechanical properties of the final products. This paper studied the effect of two representative bio-based coatings on paper tissue. Coatings based on chitin nanofibrils or polyphenols were sprayed on paper tissues to provide them, respectively, with antibacterial and antioxidant activity. The chemical structure of the obtained samples was preliminarily compared by ATR-FTIR before and after their application. Coatings were applied on paper tissues and, after drying, their homogeneity was investigated by ATR-FTIR on different surface areas. Antimicrobial and antioxidant properties were found for chitin nanofibrils- and polyphenols-treated paper tissues, respectively. The mechanical properties of treated and untreated paper tissues were studied, considering as a reference the same tissue paper sample treated only with water. Different mechanical tests were performed on tissues, including penetration, tensile, and tearing tests in two perpendicular directions, to consider the anisotropy of the produced tissues for industrial applications. The morphology of uncoated and coated paper tissues was analysed by field emission scanning electron microscopy. Results from mechanical properties evidenced a correlation between morphological and mechanical changes. The addition of polyphenols resulted in a reduction in mechanical resistance, while the addition of chitin enhanced this property. This study evidenced the different effects produced by two novel coatings on paper tissues for personal care in terms of properties and structure.

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Low temperature processed titanium oxide thin-film using scalable wire-bar coating

Cited by 9 publications

References 35 publications

TMDC ternary alloy–based triboelectric nanogenerators with giant photo-induced enhancement

TMDC ternary alloy–based triboelectric nanogenerators with giant photo-induced enhancement

Rapid and Scalable Wire-bar Strategy for Coating of TiO2 Thin-films: Effect of Post-Annealing Temperatures on Structures and Catalytic Dye-Degradation

Influence of Functional Bio-Based Coatings Including Chitin Nanofibrils or Polyphenols on Mechanical Properties of Paper Tissues

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