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Fotodegradación de azul de metileno con óxidos de cobre y titanio sobre telas de algodón y polipropileno
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Researchers incorporated CuO and TiO2 nanoparticles onto polypropylene and cotton fabrics to create reusable personal protective equipment, finding that low CuO-to-TiO2 ratios improved photocatalytic properties and increased methylene blue photodegradation by up to 350% in cotton and 23.7-fold more effectively in polypropylene than cotton.
ResumenEsta investigacin examina la incorporacin de nanopartculas de CuO y TiO2 sobre telas de polipropileno o algodn para su implementacin como equipo de proteccin personal reusable.Se utilizan diferentes mtodos de preparacin para garantizar el anclaje de las nanopartculas y evitar su lixiviacin.La composicin y preparacin de los textiles se verifica por microscopa electrnica de barrido y difraccin de rayos X. Las propiedades pticas se evalan mediante espectroscopia de reflectancia difusa y fotoluminiscencia.Los resultados muestran que para una baja proporcin de CuO a TiO2, se mejoran las propiedades pticas de los textiles, reduciendo la energa de banda prohibida y la tasa de recombinacin del par electrn-hueco.La fotodegradacin del azul de metileno aumenta un 22.8% en textiles de polipropileno y hasta 350% en textiles de algodn.En conclusin, la fotoactividad en textiles de polipropileno es 23.7 veces mayor respecto al algodn, ya que con el mtodo de preparacin se controla el contenido de las especies activas.Palabras clave: fotocatlisis; nanopartculas de CuO; nanopartculas de TiO2; telas de polipropileno; telas de algodn Methylene blue photodegradation with copper and titanium oxides on cotton and polypropylene fabrics
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