The chemistry of micro and nanostructured carbon materials currently occupies a unique place in the scientific debate. Knowledge of the structural composition and the structure-property becomes a key tool to enhance their applications. There are various techniques for obtaining these kind of materials, but the hydrothermal carbonization stands out for to be quick and easy, it is also possible to use Lenna, foliage of cassava, bagasse and sugarcane as synthetic precursors. However, this technique are limited by the strong bonds of the molecules that make up the structure, majority: cellulose, hemicellulose and lignin. For this reason, in this work we propose to use a pre-treatment before the hydrothermal carbonization: the acid hydrolysis using HNO<sub>3</sub> acid in a rang of concentration between 2-20 % v / v, under reflux conditions. We also adjusted the mass / volume ratio resulting of the mixture of the material/acid. The acid hydrolysis contribute to breakdown of fibrous material bonded strongly, leaving available fragments of molecules that make up the cell walls of the biomass, acting as precursors for the formation of new carbon structures with different morphologies with high added value. Under specific conditions during acid hydrolysis and treatment via hydrothermal carbonization was possible to obtain hybrid nanomaterials with well defined morphologies without the use of catalysts.

New nanohybrid materials from sugar cane bagasse: The role of acid hydrolysis

249th National Meeting (2015)

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