Accordion structured porous silicon membranes: Application to contamination detection of organic volatile by FTIR spectroscopy

Immobilization of hydroxocobalamin (vitamin B12) on aptes-functionalized mesoporous silicon

“…The surface of freshly prepared PS layers (figure 3(a)) is well known to be covered by hydrogen species peaking around 2100 cm −1 (Si-H x , x=1-3) [14,19]. ATR-FTIR of PS-APTES (figure3(a)) confirms the attachment of hydrolyzed APTES on PS layers with the presence of bands associated to the CH 2 stretching modes at 2925 and 2854 cm −1 while the 1572 and 1475 cm −1 peaks are assigned to NH 2 deformation modes of the amine groups of the APTES [14,20].…”

Effective membrane backwash with carbon dioxide under severe fouling and operation conditions

“…In lieu of current trends, seawater desalination is establishing itself as a major practice of freshwater production not only in regions with the arid and semi-arid climates but also in areas with predominantly moderate climate [1]. Recently, a number of integrated ultrafiltration -seawater reverse osmosis plants (UF-SWRO) has been commissioned worldwide [2,3]. In these plants, the UF stage is employed for the feed water pretreatment, and is effective in achieving stable permeate quality when treating challenging waters with high turbidity [4].…”