Controllable Production of Micro-nanoscale Metal-Organic Frameworks Coatings on Cotton Fabric for Sensing Cu 2+
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ISSN 1229-9197 (print version) ISSN 1875-0052 (electronic version)
Controllable Production of Micro-nanoscale Metal-Organic Frameworks Coatings on Cotton Fabric for Sensing Cu2+ Xingfang Xiao2, Lipei Ren2, Shujun Wang1, Qian Zhang2, Yawei Zhang2, Ruina Liu1,2*, and Weilin Xu2* 1
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School of Chemistry & Material Science, Langfang Normal University, Langfang 065000, China State Key Laboratory of New Textile Materials & Advanced Processing Technologies and Hubei Key Laboratory of Advanced Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China (Received August 2, 2019; Revised December 21, 2019; Accepted January 9, 2020) Abstract: Luminescent lanthanide metal-organic frameworks (ln-MOFs) is a promising materials for sensing. However, seeking ideal method to scale up in mass production and can be uniform on flexible substrate is still a great challenge. In this study, a novel and efficient process was employed for the fabrication of flexible and environmental copper ion-sensing materials using cotton fabric as a substrate. The micro-nanoscale Europium metal-organic frameworks (Eu-MOFs) was prepared through adding blocking reagent, and then cotton fabric was coated with the Eu-MOFs by hot pressing. The results show that controllable dense micro-nanoscale Eu-MOFs film was coated on the cotton fabric with different dipping and hot pressing times. The method is fast, simple, low-cost and suitable for production. The Eu-MOFs coated cotton fabric exhibits good photoluminescent properties. The selective sensing ability of Eu-MOFs coated fabric for Cu over many other metal ions (K , Cd , Ca , Pb , Na , Zn , Ni , Mg , Al and Co ) is verified by emission spectra, and by the fact that the fluorescence intensity of the fabric significantly decreased with an increase in the concentration of Cu (10 -10 mol/L). This method provides a new path for the controllable production of MOFs-coated functional textiles for different applications, such as anti-counterfeiting, UV-protection, superhydrophobic, and sensing materials in the textile industry. 2+
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Keywords: Lanthanide metal-organic frameworks, Controllable production, Hot pressing, Fluorescence film, Copper ions sensing
filtration, anti-coupling, and composite reinforcement [13, 14]. Cotton is a natural cellulose fibre, which is particularly interesting due to its high surface area, flexibility, recyclability, biodegradation characteristics, abundance, and low cost [15]. Previously, Karimi et al. [16] prepared electroconductive, selfcleaning, antibacterial and antifungal, non-toxic cotton fabric through a dipping coating method using graphene/ TiO2 nanoparticles. Conductive cotton fabric with embedded carbon nanotubes have also been fabricated via a surface macro-dissolution process [17]. However, limited studies are available on fabricating MOFs, especially Ln-MOFs to produce functional textiles. TMU-4 and TMU-5 MOFs have been applied to silk fibres through the liquid-phase epitaxy method [18], polystyrene/
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