| Publication Type |
Journal Article |
| Title |
Physicochemical properties of new cellulose-TiO2 composites for the removal of water pollutants: Developing specific interactions and performances by cellulose functionalization |
| Authors |
Hesham Hamad Esther Bailón-García Sergio Morales-Torres Francisco Carrasco-Marin Agustin Francisco Perez-Cadenas Francisco J. Maldonado-Hodar |
| Groups |
CATHPRO |
| Journal |
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING |
| Year |
2018 |
| Month |
August |
| Volume |
6 |
| Number |
4 |
| Pages |
5032-5041 |
| Abstract |
Cellulose-TiO2 composites are developed using microcrystalline cellulose (MCC). The closed MCC structure was solubilized by liquid-phase treatments with nitric (HNO3) or phosphoric acids (H3PO4) to improve the TiO2-dispersion. These pretreatments simultaneously generate different types of oxygen and phosphorus functionalities on the cellulose chains that determine the interactions with Ti-alkoxide precursor during impregnation, leading to composite materials with different Ti-loadings and physicochemical characteristics. The morphological, textural, chemical and crystalline properties of both cellulose derivatives and cellulose-TiO2 composites were studied by complementary techniques. Microporous composites with round-shaped anatase-TiO2 microcrystals were obtained by using HNO3 treatments, while H3PO4 favours the formation of mesoporous composites with flat and non-crystalline-TiO2 particles. The photocatalytic efficiency of the obtained cellulose-TiO2 composites always improve the results obtained with the commercial TiO2-photocatalysts used as reference materials; this behaviour was analysed taking into account the physicochemical characteristics of the samples. |
| DOI |
http://dx.doi.org/10.1016/j.jece.2018.07.043 |
| ISBN |
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| Publisher |
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| Book Title |
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| ISSN |
2213-3437 |
| EISSN |
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| Conference Name |
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| Bibtex ID |
ISI:000444046700131 |
| Observations |
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