Nu-6(1) zeolite, the lamellar precursor of NSI topology, was firstly synthesized with 4'4-bipyridine as the structure-directing agent (SDA) and then subjected to HCl-EtOH treatment for the purpose of structural modification. Interlayer deconstruction and reconstruction took place alternately in this acid treatment. An intermediate named ECNU-4 was separated at the initial stage of this continuo...

Abstract Tantalum pentoxide nanoparticles (Ta 2 O 5 NPs) were fabricated by cathode glow discharge electrolysis (CGDE) generated between a needle-like platinum wire and tantalum foil anode in 6 g L −1 Na SO 4 electrolyte solution containing ml hydrofluoric acid (HF) 0.075 cetyltrimethyl ammonium bromide (CTAB). The chemical structure, composition morphology of the obtained powder analyzed using...

Standard cleaning processes may not remove all the soiling typically found in food industry, such as carbohydrates, fats, or proteins. Contaminants have a high impact in disinfection as their presence may reduce the activity of disinfectants. The influence of alginic acid, bovine serum albumin, yeast extract, and humic acids was assessed on the antimicrobial activities of benzalkonium chloride ...

Application of antimicrobial chemicals is a general procedure in the cleaning and disinfection of food-contacting surfaces. Adhesion to glass surfaces and chemically induced detachment of Pseudomonas fluorescens ATCC 13525(T) were studied in situ, under flow conditions, in a well-controlled parallel plate flow chamber (PPFC). Ortho-phthalaldehyde (OPA) and cetyltrimethyl ammonium bromide (CTAB)...

Simple and novel spectrophotometric method is described for simultaneous determination of aluminium and iron. The method is based on the metal ions complexes formed by aluminium and iron with mixed chromogenic reagents of 1, 10 phenanthroline and 8-hydroxyquinoline (oxine). The derivatives have absorption maxima at 400 nm and 510 nm respectively in the presence of cetyltrimethyl ammonium bromid...

This work describes a new, low-cost and simple-to-use method for the determination of free biothiols in biological fluids. The developed utilizes interaction with gold ions, previously anchored on micellar assemblies through electrostatic interactions hydrophilic headgroup cationic surfactant micelles. Specifically, reaction AuCl4− cetyltrimethyl ammonium bromide (CTAB) produces an intense oran...

Hydrophobically modified water-soluble polymers (HMWSPs), comprised of a poly(sodium methacrylate) (PMANa) or poly(sodium acrylate) (PANa) backbone and pendent dodecyl methacrylate (DMA) or dodecyl acrylamide (DAAm) chains, respectively, were synthesized. The hydrophobic content of the copolymers, P(MANa-co-DMA) and P(ANa-co-DAAm), is in the range of 0 to 25 mol%, while their weight-average mol...