In the context of circular economy, used coffee grounds were transformed into powdered activated carbon by chemical activation using potassium hydroxide. Its characterisation was conducted in comparison with that a commercial scanning electron microscopy (SEM) coupled energy dispersive X-ray microanalysis (EDX), diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Boehm titration,...

Biofilm is a complex community of single or different types of microorganisms (bacteria, viruses, fungi, protozoa) attached to a surface and stick to each other through production of extracellular matrix. Salmonella typhi forms biofilm on cholesterol gallstones resulting in carrier state. Once formed, biofilm is difficult to treat. To date cholecystectomy is the only cure for this condition. Ma...

The active substrates in surface enhanced Raman scattering (SERS) spectroscopy were prepared through self-assembly of nanoparticles on functionalized glasses. Colloidal silver nanoparticles (Ag NPs) were prepared chemically in two different sizes by reduction of AgNO3 using trisodium citrate and sodium borohydride. Gold–silver core–shell nanoparticles were also prepared to compare between the o...

Textile industries discharge wastewater containing various dyes including Crystal Violet dye. These are very harmful for human beings, animals and plants. Therefore, the attempt is made adsorption framework on elimination of crystal violet dye by using Cicca acida L. stem-activated carbon from aqueous solution carried out under experimental methods optimization conditions. Adsorption data model...

A highly SERS active substrate of AgNPs on the Al/ZnO has been developed. It can be used for selective detection crystal violet in actual water samples.

Objective(s): Pseudomonas aeruginosa is a nosocomial pathogen resistant to most antimicrobial treatments. Furthermore, it persists in adverse environments thereby forming biofilms on various surfaces. Researchers have therefore focused on antibiofilm strategies using nanoparticles due to their unique physicochemical properties. Superparamagnetic iron oxide nanoparticles (SIONPs) have recently s...

A gas permeable liquid core waveguide (LCW) was successfully used for the simulation and in situ spectroscopic analysis of photodegradation processes two dyes crystal violet eosin Y.