TiO2 as additive

TiO₂ was also reported to have catalytic effects on enhancing the desorption performance of CO₂ capture [27]. The TiO₂ possesses Lewis acid (electron acceptor) sites on the surface of the catalyst, which is why it experiences an improved CO₂ stripping rate. This is, however, not as significant as the other catalysts studied by the author and team. In terms of its other properties, the TiO₂ is still prone to agglomeration and is thermally stable, proving its suitability to be employed for a typical regeneration temperature. According to a study [117], the TiO₂ nanoparticle powder showed two main stages of mass loss. The first being 6–8%, between 25 and 100 °C, which was due to water loss on the surface of the TiO₂. The second one was attributed to the loss of the organic matter after the rupture of the polymer chain due to the high temperature of 250 and 480 °C. This corresponded to an additional weight loss of 35%. In addition to that, it was also a recyclable nanoparticle with slight toxicity and was relatively harmless to the environment.”