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    A facile method for fabricating color adjustable multifunctional cotton fabrics with solid solution BiOBrxI1-x nanosheets

    Year: 2020

    Journal: Cellulose, Volume 27, APR, page 3517–3530

    Authors: Zhou, Peiwen; Zhang, Linping; Sui, Xiaofeng; Zhong, Yi; Wang, Bijia; Chen, Zhize; Feng, Xueling; Xu, Hong; Mao, Zhiping

    Organizations: National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21872025]; National Key R & D Program of China [2017YFB0309700]

    Keywords: BiOBrxI1-x solid solution; Adjustable color; Self-cleaning; UV protection; Near infrared reflection; Cotton fabric

    Multifunctional cotton fabric with adjustable color was simply fabricated by anchoring solid solution BiOBrxI1-x nanosheets on the surface of carboxymethylated cotton fabric for self-cleaning, UV protection, and near infrared reflection. The structure and morphology of prepared multifunctional cotton fabrics (BiOBrxI1-x-CCF (0 <= x <= 1)) were characterized by X-ray powder diffraction and scanning electron microscopy. Color, self-cleaning, UV protection, near infrared reflection, and acid and alkali resistance of these multifunctional cotton fabrics were systematically studied. With the increase of iodine content, the BiOBrxI1-x nanosheets with an average thickness of 40-50 nm and a size of 1-2 mu m in the other two dimensions loaded on the cotton fabrics can extend the absorption edge of BiOBrxI1-x-CCF (0 <= x <= 1) from 430 nm to 630 nm, giving cotton fabric color and excellent UV protection property. Interlaced solid solution nanosheets on cotton fabric surface give BiOBrxI1-x-CCF hydrophobicity (contact angle: 139 degrees-143 degrees) and ability to photodegrade stain under the visible light irradiation. The near infrared reflectance of BiOBrxI1-x-CCF (0 <= x <= 1) is higher than that of the raw cotton, which gives it infrared reflection thermal isolation. BiOBrxI1-x-CCF (0 <= x <= 1) has a certain acid and alkali resistance in solution (pH 2.3-11.2). Thus, BiOBrxI1-x-CCF has great potential to be used as multifunctional fabric in self-cleaning and outdoor protection. [GRAPHICS] .
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