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dc.contributor.authorHamad, Hesham
dc.contributor.authorBailón García, Esther 
dc.contributor.authorMorales Torres, Sergio
dc.contributor.authorCarrasco Marín, Francisco 
dc.contributor.authorPérez Cadenas, Agustín Francisco 
dc.contributor.authorMaldonado Hodar, Francisco José
dc.identifier.citationHamad, H., Bailón-García, E., Morales-Torres, S., Carrasco-Marín, F., Pérez-Cadenas, A. F., & Maldonado-Hódar, F. J. (2020). Functionalized Cellulose for the Controlled Synthesis of Novel Carbon–Ti Nanocomposites: Physicochemical and Photocatalytic Properties. Nanomaterials, 10(4), 729. [doi:10.3390/nano10040729]es_ES
dc.descriptionH.H. gratefully thanks a predoctoral fellowship from Erasmus Mundus (Al-Idrisi II). E.B.-G. is grateful to MINECO for her postdoctoral fellowship (FJCI-2015-23769). S.M.-T. acknowledges the financial support from the University of Granada (Reincorporación Plan Propio). “Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente” of the University of Granada (UEQ - UGR) is gratefully acknowledged for the technical assistance.es_ES
dc.description.abstractCarbon–Ti nanocomposites were prepared by a controlled two-step method using microcrystalline cellulose as a raw material. The synthesis procedure involves the solubilization of cellulose by an acid treatment (H3PO4 or HNO3) and the impregnation with the Ti precursor followed of a carbonization step at 500 or 800 ◦C. The type of acid treatment leads to a different functionalization of cellulose with phosphorus- or oxygen-containing surface groups, which are able to control the load, dispersion and crystalline phase of Ti during the composite preparation. Thus, phosphorus functionalities lead to amorphous carbon–Ti composites at 500 ◦C, while TiP2O7 crystals are formed when prepared at 800 ◦C. On the contrary, oxygenated groups induce the formation of TiO2 rutile at an unusually low temperature (500 ◦C), while an increase of carbonization temperature promotes a progressive crystal growth. The removal of Orange G (OG) azo dye in aqueous solution, as target pollutant, was used to determine the adsorptive and photocatalytic efficiencies, with all composites being more active than the benchmark TiO2 material (Degussa P25). Carbon–Ti nanocomposites with a developed micro-mesoporosity, reduced band gap and TiO2 rutile phase were the most active in the photodegradation of OG under ultraviolet irradiation.es_ES
dc.description.sponsorshipThis work was financially supported by the Spanish Projects ref. RTI2018-099224-B-I00 from ERDF/Ministry of Science, Innovation and Universities—State Research Agency and Junta de Andalucía - Grant ref. RMN-172.es_ES
dc.rightsAtribución 3.0 España*
dc.subjectCellulose decrystallizationes_ES
dc.subjectPhosphorus functionalitieses_ES
dc.subjectCarbon–Ti nanocompositeses_ES
dc.subjectTiP2O7 crystalses_ES
dc.subjectOrange Ges_ES
dc.titleFunctionalized Cellulose for the Controlled Synthesis of Novel Carbon–Ti Nanocomposites: Physicochemical and Photocatalytic Propertieses_ES

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Atribución 3.0 España
Except where otherwise noted, this item's license is described as Atribución 3.0 España