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Chitosan-TiO2: A Versatile Hybrid Composite

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Laboratorio Integral de Investigación en Alimentos, Tecnológico Nacional de México-Instituto Tecnológico de Tepic. Av. Tecnológico 2595 Fracc. Lagos del Country, Tepic 63175, Mexico
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Universidad de Guadalajara, Centro Universitario de los Altos, División de Ciencias Agropecuarias e Ingenierías, Laboratorio de Materiales, Agua y Energía, Av. Rafael Casillas Aceves 1200, Tepatitlán de Morelos 47600, Mexico
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Campo Experimental Centro Altos de Jalisco, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Boulevard de la Biodiversidad 2470, Tepatitlán de Morelos 47600, Mexico
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Laboratorio de Acuacultura Tropical, División Académica de Ciencia Biológicas (DACBiol)-Universidad Juárez Autónoma de Tabasco (UJAT), Carretera Villahermosa-Cárdenas Km. 0.5 S/N, Rancheria Emiliano Zapata, Villahermosa 86150, Mexico
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Universidad de Guanajuato, División de Ciencias Naturales y Exactas, Campus Guanajuato, Noria Alta S/N, Noria Alta, Guanajuato CP 36050, Mexico
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Authors to whom correspondence should be addressed.
Materials 2020, 13(4), 811; https://doi.org/10.3390/ma13040811
Received: 15 January 2020 / Revised: 5 February 2020 / Accepted: 6 February 2020 / Published: 11 February 2020
(This article belongs to the Section Porous Materials)
In recent years, a strong interest has emerged in hybrid composites and their potential uses, especially in chitosan–titanium dioxide (CS–TiO2) composites, which have interesting technological properties and applications. This review describes the reported advantages and limitations of the functionalization of chitosan by adding TiO2 nanoparticles. Their effects on structural, textural, thermal, optical, mechanical, and vapor barrier properties and their biodegradability are also discussed. Evidence shows that the incorporation of TiO2 onto the CS matrix improves all the above properties in a dose-dependent manner. Nonetheless, the CS–TiO2 composite exhibits great potential applications including antimicrobial activity against bacteria and fungi; UV-barrier properties when it is used for packaging and textile purposes; environmental applications for removal of heavy metal ions and degradation of diverse water pollutants; biomedical applications as a wound-healing material, drug delivery system, or by the development of biosensors. Furthermore, no cytotoxic effects of CS–TiO2 have been reported on different cell lines, which supports their use for food and biomedical applications. Moreover, CS–TiO2 has also been used as an anti-corrosive material. However, the development of suitable protocols for CS–TiO2 composite preparation is mandatory for industrial-scale implementation. View Full-Text
Keywords: chitosan; titanium dioxide; functionalization; hybrid composite; biological activities chitosan; titanium dioxide; functionalization; hybrid composite; biological activities
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Anaya-Esparza, L.M.; Ruvalcaba-Gómez, J.M.; Maytorena-Verdugo, C.I.; González-Silva, N.; Romero-Toledo, R.; Aguilera-Aguirre, S.; Pérez-Larios, A.; Montalvo-González, E. Chitosan-TiO2: A Versatile Hybrid Composite. Materials 2020, 13, 811.

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