This work shows the preliminary results concerning to the synthesis or modification of carbon-based nanomaterials by plasma discharge, magnetron sputtering, and chemical vapor deposition methodologies. As a first approach to show the potential of these techniques, scanning electron microscopy analysis was performed in order to verify morphological changes and to proof that it is possible to design the morphology of doped and decorated carbon nanomaterials. In spite of none further characterization was performed, from the discussion of results in literature, it can be suggest that these methods would permit to design novel carbon-based nanomaterials<br />for the energy production and storage, catalytic and photocatalytic processes related with environment and green chemistry applications.