Nano photo scouring and nano photo bleaching of raw cellulosic fabric using nano TiO2

Montazer, Majid; Morshedi, Somaye

doi:10.1016/j.ijbiomac.2012.02.018

Cited by 44 publications

(21 citation statements)

References 56 publications

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“…In the case of cotton fabric, UV rays influence the elevated whiteness (up to value 78.1), if compared with the whiteness of the non-irradiated samples. Although, Montazer et al [17] studied the photo-catalytic activity of nanoTiO2 causing decomposition of some cotton's naturallyoriginated/remained pigments under UV lightness, our study did not prove the bleaching action, probably due to the silica coated TiO2. Just the opposite phenomenon could be comprehended from Figure 7; namely, the selected colloidal dispersion prevented yellowness of Co/PES fabric subjected to UV irradiation.…”

Section: Cie Whiteness and Yellowness Indexcontrasting

confidence: 85%

Washing Durability and Photo-Stability of NanoTiO2-SiO2 Coatings Exhausted onto Cotton and Cotton/Polyester Fabrics

Ojstršek

Fakin

2019

Coatings

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The purpose of this study was to assess and compare the durability of TiO2-SiO2 coatings applied in three concentrations onto two lightweight cellulose-based fabrics diverse in the composition against two external factors, repeated washings and prolonged intensive UV irradiation, by observing the changes in surface morphology, investigation of optical properties, and identification of specific molecular vibrations. The scanning electron microscopy (SEM) micrographs, diffuse reflectance spectroscopy (DRS) profiles and fourier transform-infrared (FT-IR) spectra implied equal distribution of TiO2-SiO2 nanoparticles over the surfaces of both fabrics after exhaustion procedures, regarding the concentration of colloidal paste and the type of material used, followed by a slight reduction of nanoparticles after twenty washing cycles. Moreover, the newly gained, good to very good UV protective functionality proved the suitability of the employed procedure and the sufficient durability of the selected coatings. Additionally, UV irradiation mainly caused damages to the cotton. Cotton/polyester became yellower under UV, although the application of TiO2-SiO2 protected the material against yellowness.

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Section: Cie Whiteness and Yellowness Indexcontrasting

confidence: 85%

Washing Durability and Photo-Stability of NanoTiO2-SiO2 Coatings Exhausted onto Cotton and Cotton/Polyester Fabrics

Ojstršek

Fakin

2019

Coatings

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“…Considering the advantages of the inclusion of TiO 2 NPs in fabrics, one of which consists in reducing the photo-yellowing of wool (Montazer and Pakdel, 2010 ) and nano-photo scouring of cotton (Montazer and Morshedi, 2012 ), the development of functionalized cotton fabrics with antimicrobial and self-cleaning properties have been achieved by using composite complexes of Ag/TiO 2 with CDs (Attarchi et al, 2013 ). The study was carried out by incorporating the composite into cellulosic cotton by using three different procedures: in-situ , pad-dry-cure, and exhaustion (Attarchi et al, 2013 ).…”

Section: Application Of Cellulose and Cyclodextrin Based Materialsmentioning

confidence: 99%

Combining Cellulose and Cyclodextrins: Fascinating Designs for Materials and Pharmaceutics

et al. 2018

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Cellulose and cyclodextrins possess unique properties that can be tailored, combined, and used in a considerable number of applications, including textiles, coatings, sensors, and drug delivery systems. Successfully structuring and applying cellulose and cyclodextrins conjugates requires a deep understanding of the relation between structural, and soft matter behavior, materials, energy, and function. This review focuses on the key advances in developing materials based on these conjugates. Relevant aspects regarding structural variations, methods of synthesis, processing and functionalization, and corresponding supramolecular properties are presented. The use of cellulose/cyclodextrin conjugates as intelligent platforms for applications in materials science and pharmaceutical technology is also outlined, focusing on drug delivery, textiles, and sensors.

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“…The semiconductors commonly used to catalyse a wide range of chemical reactions include titanium dioxide (TiO2), zinc oxide (ZnO), zinc sulphide (ZnS), tungsten trioxide (WO3) and cadmium sulfide (CdS) (Abid et al 2017a;Abid et al 2017b;Beydoun et al 1999;Lima et al 2014;Montazer and Pakdel 2010;Pakdel et al 2014a;Pera-Titus et al 2004). TiO2 with a band gap energy ≈ 3.0-3.3 eV (Jovic et al 2015) has been established as one of the most promising photocatalyst in the degradation of organic compounds due to its physicochemical properties and high photoactivity when exposed to ultraviolet (UV) radiation (Abid et al 2017a;Haji et al 2014;Hashemikia and Montazer 2012;Jovic et al 2015;Lima et al 2014;Montazer and Morshedi 2014;Pakdel et al 2014a;Wu et al 2009). Furthermore, this semiconductor is white, which is an advantage when the purpose is to bleach the substrate on which it is applied (Montazer and Morshedi 2012).…”

Section: Introductionmentioning

confidence: 99%

“…TiO2 with a band gap energy ≈ 3.0-3.3 eV (Jovic et al 2015) has been established as one of the most promising photocatalyst in the degradation of organic compounds due to its physicochemical properties and high photoactivity when exposed to ultraviolet (UV) radiation (Abid et al 2017a;Haji et al 2014;Hashemikia and Montazer 2012;Jovic et al 2015;Lima et al 2014;Montazer and Morshedi 2014;Pakdel et al 2014a;Wu et al 2009). Furthermore, this semiconductor is white, which is an advantage when the purpose is to bleach the substrate on which it is applied (Montazer and Morshedi 2012). Commercial TiO2 Aeroxide® P25 (80 % of anatase and 20 % of rutile), is highly used in the industry because it allows the obtention of the best compromise between the high photocatalytic performance of the anatase phase and the more intense absorption in the solar spectrum of the rutile phase (Jovic et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Sustainable Bleaching Process of Raw Cotton by TiO2 Light-Activated Nanoparticles

Barros

Conceição

Silva

et al. 2020

UPjeng

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Nanoparticles (NPs) of titanium dioxide (TiO2) are promising for the photocatalytic degradation of organic compounds, arising as an excellent alternative to conventional bleaching processes. Within this background, aqueous suspensions of TiO2 NPs were impregnated by the pad-dry method in raw cotton. The hydrophilic properties and whiteness index (WI) of Berger were the main parameters examined before and after the TiO2 treatment. In the absence of water, using a UV-Vis lamp, high hydrophilicity was found for raw cotton. Diversely, under UV-LED radiation, the presence of water molecules in the coated cotton was revealed to be a crucial parameter in enhancing its whiteness. A comparable WI of Berger with conventional bleaching methods was obtained using 0.5 g L-1 TiO2 suspension under UV-LED radiation, suggesting that the impregnation of TiO2 NPs can be a promising alternative for the industrial bleaching methods, as it proves to be more sustainable and with low operating costs.

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Nano photo scouring and nano photo bleaching of raw cellulosic fabric using nano TiO2

Cited by 44 publications

References 56 publications

Washing Durability and Photo-Stability of NanoTiO2-SiO2 Coatings Exhausted onto Cotton and Cotton/Polyester Fabrics

Washing Durability and Photo-Stability of NanoTiO2-SiO2 Coatings Exhausted onto Cotton and Cotton/Polyester Fabrics

Combining Cellulose and Cyclodextrins: Fascinating Designs for Materials and Pharmaceutics

Sustainable Bleaching Process of Raw Cotton by TiO2 Light-Activated Nanoparticles

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