Nanoporous carbons for the enviromental remediation and solar fuels production

MATOS, J.:
Plenaria “Tercer Taller Latinoamericanos de Materiales de Carbono” (TLMC3), 2018.

Abstract

Nanoporous carbon’s applications in catalytic and photocatalytic processes related with environmental remediation of polluted water and air and for the solar fuel production will be presented. High surface area activated carbons (AC) are useful for H2 photoproduction on Au-Ti02/AC under visible irradiation. A remarkable increase in the photoactivity of the composite up to a factor about 3 times higher than the commercial catalyst free of carbons was found and ascribed to an enhanced injection of hot electron from Au to TiO2 due to a stable plasmon resonance in the noble metal. Biomass-derived molecules such as furfural, chitosane, and saccharose were used to prepare hybrid C-TiO2 materials by solvothermal synthesis. Hybrid TiO2-C supports led to an important enhancement in the catalytic activity of Pd-based catalysts in the electrooxidation of formic acid with a maxima density power up to 3.3 times higher than the same catalyst on a commercial carbon. Up to 10 times higher photoactivity that the standard semiconductor was found in the photodegradation of dyes and halophenols under visible-irradiated Carbon based/TiO2 materials. An integrated approach will be presented to remark the potential of nanoporous carbon-based sustainable catalysis and photocatalysis considering energy production and environmental considerations. It can be concluded that carbon-based materials show new perspectives for the sustainable catalysis and photocatalysis related with clean energy production, green and selective catalytic processes, and for the environmental remediation of polluted water by solar technology.

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