Preparation And Properties Of Functional Nanoparticles Loaded On Cotton Fabric

With the progress of The Times and the development of society,textiles are playing an increasingly key role in our daily life.The scope of its application is constantly expanded,so the development of functional textiles has become the development trend of today's society.In the field of functional textiles,how to uniformly fix the nanoparticles on the surface of the fabric to give the fabric special properties and make its performance more durable has become a hotspot of current research.Because the nanoparticles themselves have no adsorption on the fabric,it is difficult to stick to the fabric surface,resulting in poor fastness to the fabric and the deterioration of the fabric function.Therefore,improving the adhesion of nanoparticles on fabric surface is of great significance for functional textiles.This topic uses dopamine to modify the surface of cotton fabric,and then carries on the functional finishing,so as to realize the application of fabric in different fields.The main work contents are as follows:(1)In this work,we adopt a simple method to manufacture multi-functional threedimensional filter cotton fabric.In order to achieve efficient oil-water separation,antibacterial and photocatalytic performance,silver nanoparticles(Ag NPs)were grown in situ on polydopamine(PDA)template filtered cotton fabric and decorated with 1-dodecyl mercaptan.The appearance and structural characteristics of functional filtered cotton fabric were characterized by scanning electron microscopy(SEM),energy dispersive X-ray spectroscopy(EDS),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).It has good superhydrophobic properties,water contact Angle(WCA)of 152.5°,and high oil-water separation efficiency.In addition,3d filter cotton fabric also has effective antibacterial performance against Escherichia coli.By reducing 4-nitrophenol(4-NP),the catalytic activity of functionalized filtered cotton fabric was evaluated and reused.The results show that the multi-functional threedimensional filter cotton fabric can effectively remove oil and dye from wastewater and has broad application prospect in many fields.(2)The degradation demand of formaldehyde(HCHO),which is very important for human health in interior decoration,is increasing.In order to develop environmentally friendly HCHO degradation materials,manganese dioxide nanoparticles(MnO2 NPs)were grown in situ on polydopamine(PDA)template cotton fabric.The morphology,elemental composition and crystal structure of Cotton/pDA/MnO2 fabric were characterized by scanning electron microscopy(SEM)-energy dispersive X-ray spectroscopy(EDX),Fourier Transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).The adsorption and degradation of HCHO in Cotton/pDA/MnO2 fabric were studied in a self-built closed reactor,and the stability of adsorption was evaluated by cyclic experiments.The results showed that after two cycles,the removal rate of HCHO could reach 100% within 20 min,indicating that the prepared fabric had a good stability of HCHO adsorption.The Cotton/pDA/MnO2 fabric with HCHO adsorption was irradiated under sunlight and ultraviolet lamp,and the degradation of HCHO was evaluated by the change of CO2 concentration in the device detected by CO2 detector.The results show that formaldehyde can be decomposed into CO2 completely under the irradiation of sunlight and ultraviolet lamp,and MnO2 NPs coated fabric degraded by formaldehyde has a potential application prospect in interior decoration.