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Fe-N-doped TiO 2 , Fe-S-doped TiO 2 and Fe-N-S-doped TiO 2 were prepared with Fe doping peroxotitanium complex (Fe-PTC) as precursor in aqueous solution by a low-temperature process. The structure and properties of catalysts were characterized by XRD, FT-IR, XPS, TEM and UV–Vis respectively. Fe-N-doped TiO 2 , Fe-S-doped TiO 2 and Fe-N-S-doped TiO 2 ...
Graphene oxide (GO) sheets were transferred by Langmuir–Blodgett technique on Si and SiO 2 /Si substrates. The surface pressure – area isotherms of ‘amphiphilic’ GO sheets at the air–water interface are found to be highly sensitive to subphase pH, which significantly affects their hydrophilicity and the interaction between the sheets. The surface morphology of GO sheets transferred under different...
Targeted ultrasound contrast agents (UCAs) offer new opportunities to enhance the capabilities of diagnostic ultrasound imaging to detect pathological tissue. Poly (d, l-lactic-co-glycolic acid) (PLGA) UCAs based on microbubbles (MBs) were developed to target inflamed plaque, to aid in the diagnosis of atherosclerosis. A conjugation strategy was adopted using PLGA shelled MBs to enable localized targeting...
In this work, the electrophoretic deposition method was utilized to immobilize TiO 2 particles on stainless steel substrates. In addition, for the first time, statistics-based experimental design using response surface methodology was employed to investigate the effect of four key coating parameters (i.e. applied voltage, calcination temperature, photocatalyst weight percentage, and deposition...
Prussian blue (PB), an inorganic iron-hexacyanoferrate polymer, is a potential redox system. In general, it can be prepared on any conducting substrate by electrochemical deposition technique in which a working electrode is potential cycled with millimolar quantities of a mixture FeCl 3 and [Fe(CN) 6 ] 3− in an alkaline metal ion containing acid solution (pH<3). Here in...
Three coagulants were used to investigate the characteristics of flocs formed in TiO 2 system, and the effects of humic acid (HA) on the coagulation process were also investigated. The results indicated that flocs could not regrow to former size in all coagulation conditions. The floc sizes after re-growth decreased with increasing the breakage period. Polyacrylamide (PAM) could significantly...
A simple wet processing route for the formation of composite particles via the adsorption of highly dispersible nanoparticles onto the core particles in organic solvents, without the formation of strong aggregates, was developed. The process involved a simple mixing procedure using core particles and surface-modified highly dispersible nanoparticles (shell nanoparticles) in organic solvents, assisted...
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