XPS analysis of aluminosilicate microspheres bioactivity tested in vitro

Effect of the coupling agent on the properties of poly(acrylic acid)−Al2O3 interpenetrating hybrids and sorption of metal ions

“…Another contribution for this displacement is the presence of a marked interaction of the –COOH groups on the surface: hydroxyl groups, Al − OH, on the metal oxide surface can form hydrogen bonds; this interaction provides an inductive effect in close proximity to the edge of the aluminium oxide which would withdraw electron density from the metal oxide network, conferring on the Al surface species a higher positive charge. On the other hand, the incorporation of Si atoms into the metal oxide matrix causes an increase in the positive charge in the vicinity of Al 3+ . This effect is thus reflected in a decrease of Al 2p BE.…”

Efficient Ru-based scrap waste automotive converter catalysts for the continuous-flow selective hydrogenation of cinnamaldehyde

“…52,53 Identification of other elements constituting the CC structure and silica support was also carried out. showed a low binding energy shift in comparison with pure aluminosilicate compounds, 55 which could be associated with an electronic effect due to the presence of multiple Si-and Ometals (Ce, Zr, Fe, etc.) interactions in the CC support.…”

Development of microspheres for biomedical applications: a review

“…Methods of creating glass spheres have included dropping crushed glass particles down a vertical tube furnace (Fu et al 2010), pouring molten glass onto stainless steel plates to create droplets (Huang et al 2009), sol–gel method and spray drying of sols (Todea et al 2013) and via the flame spheroidisation process (Lakhkar et al 2012) (see Fig. 1).…”

“…1). Sols of varying glass compositions (such as aluminosilicate) are usually produced by chemical precipitation method and then the microspheres are formed either by spray drying of the sols or via a solvent evaporation process (Todea et al 2013). On the other hand, vertical tube furnaces and flame spheroidisation processes involve grinding the desired composition of the bulk glass into particles.…”