Self-cleaning cotton

Qi, Kaihong; Daoud, Walid A.; Xin, John Haozhong; Mak, Chee Leung; Tang, Waisze; Cheung, Wp P.

doi:10.1039/b610861j

Cited by 220 publications

(141 citation statements)

References 34 publications

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“…It is recommended that UPF rating for garments should not be less than 40-50?. As can be seen in Table 3 control Co fabric posses extremely low UPF and non-rateable UPF rating of five (Qi et al 2006). However, loading of Co fabrics with TiO 2 NPs led to a drastic increase of UPF values and accordingly, desired UPF rating of 50?…”

Section: Resultsmentioning

confidence: 91%

Functionalization of cotton fabrics with corona/air RF plasma and colloidal TiO2 nanoparticles

et al. 2011

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This study discusses the possibility of using a corona discharge at atmospheric pressure and air RF plasma at low pressure for the cotton fibre activation prior to deposition of colloidal TiO 2 nanoparticles in order to enhance antibacterial, UV protective and self-cleaning properties. X-ray photoelectron spectroscopy (XPS) analysis confirmed the presence of TiO 2 nanoparticles on the surface of cotton fibres. XPS elemental mapping indicated that TiO 2 nanoparticles were more evenly distributed across the surface of untreated and corona pre-treated cotton fabrics in comparison with RF plasma pretreated fabric. Atomic absorption spectroscopy measurements revealed that the equivalent total content of TiO 2 in the cotton fabrics pre-treated by corona and RF plasma was 31% higher than in the fabric that did not undergo any treatment prior to loading of TiO 2 nanoparticles. In order to achieve maximum bacteria (Gram-negative bacteria Escherichia coli) reduction, untreated cotton fabric had to be loaded with colloidal TiO 2 nanoparticles twice, but only once following corona or RF plasma pre-treatment. Deposition of TiO 2 nanoparticles onto cotton fabrics provided maximum UV protective rating of 50?. Extraordinary photocatalytic activity of TiO 2 nanoparticles deposited onto cotton fabrics was proved by self-cleaning of blueberry juice stains and photodegradation of methylene blue in aqueous solution under UV illumination.

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Section: Resultsmentioning

confidence: 91%

Functionalization of cotton fabrics with corona/air RF plasma and colloidal TiO2 nanoparticles

et al. 2011

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“…Qi et al [38] obtained TiO 2 coated cotton textiles possessing significant photocatalytic self-cleaning properties, such as bactericidal activity, colorant stain decomposition and degradation of red wine and coffee stains. One of the areas of biomedical application of titania nanoparticle coatings is so-called "smart" textiles, which are able to purify themselves from organic matter and fungal attack, as well as to destruct bacteria under the influence of soft UV-radiation.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

The sol–gel synthesis of cotton/TiO2 composites and their antibacterial properties

Galkina

Sycheva

Blagodatskiy

et al. 2014

Surface and Coatings Technology

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Access to the published version may require journal subscription. Published with permission from: Elsevier.Standard set statement from the publisher: This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT AbstractPresent work is devoted to investigation of structure and functional properties of hybrid nanomaterials based on the TiO 2 -modified cellulose fibers of cotton. The titania hydrosol was successfully prepared using the titanium tetraisopropoxide as precursor and the nitric acid as peptizing agent via the low-temperature sol-gel synthesis in aqueous medium and applied to cotton fabric. For cross-linking of titania nanoparticles to cotton the 1,2,3,4-butanetetracarboxylic acid (BTCA) was used as a spacer. The morphology and composition of the surface pure and TiO 2 modified cotton fibers were investigated by the Scanning Electron Microscopy (SEM). The cotton/TiO 2 composite was characterized by the dielectric permittivity.For the estimation of total titania concentration, all samples were calcined at 650°C. The antimicrobial activity of the treated TiO 2 cotton fibers was investigated against Escherichia coli as a model Gram -negative bacteria after exposure to UV-irradiation for 10 minutes.

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“…(Radetic 2013;Karimi et al 2014;Morawski et al 2013;Qi et al 2006;Ibrahim et al 2010;Karimi et al 2010, Abidi et al 2009). There are many methods to modify materials with TiO 2 ; some of them require post-heat treatment to induce crystallization, e.g., the sol-gel method.…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted TiO2: anatase formation on cotton and viscose fabric surfaces

et al. 2016

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The method of TiO 2 -anatase film preparation on cotton and viscose fabric surfaces using the sol-gel process and microwave treatment is presented. Microwave treatment was used to change the amorphous TiO 2 form to anatase directly on the fabrics. The influence of microwave treatment conditions on the obtainable polymorphic form of TiO 2 was examined. Fabrics were pretreated with low-temperature air plasma (30 min). The root mean square height in the selected area increased from 44 to 166 nm (cotton) and from 9 to 112 nm (viscose). Infrared analysis showed the new band at 1748 and 1732 cm -1 corresponding to C=O stretching for plasma-treated cotton and viscose textiles, respectively. The plasma pretreatment also improved the wetting properties by TiO 2 sol and increased the surface free energy of fabrics. TiO 2 film thickness was 180 nm (12 %wg. Ti) and 140 nm (3 %wg. Ti) for cotton and viscose, respectively. TiO 2 -modified cotton reduced the nicotine concentration three times more and TiO 2 -modified viscose was two times higher under sunlight compared to raw fabrics. No changes in strength were observed for TiO 2 -modified cotton, while the strength of TiO 2 -modified viscose decreased about 45 %. No effect of UV irradiation on cotton and a slight reduction of the strength of raw viscose (7 %) and TiO 2 -modified viscose (16 %) were observed. The Ti contents after washing decreased from 12 to 11 % (cotton) and from 3 to 2.6 % (viscose). The presented method allows obtaining TiO 2 film-anatase on the cotton and viscose fabrics, but its total effectiveness is better for cotton fabrics.

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Self-cleaning cotton

Cited by 220 publications

References 34 publications

Functionalization of cotton fabrics with corona/air RF plasma and colloidal TiO2 nanoparticles

Functionalization of cotton fabrics with corona/air RF plasma and colloidal TiO2 nanoparticles

The sol–gel synthesis of cotton/TiO2 composites and their antibacterial properties

Microwave-assisted TiO2: anatase formation on cotton and viscose fabric surfaces

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