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Water pollution is a worldwide issue for the ecoenvironment and human society. Removal of various pollutants including heavy metals from the environment is a big challenge. Techniques of adsorption are usually simple and work effectively. In the current study, MWCNTs were prepared by chemical vapor deposition (CVD) of acetylene at 600°C. Fe-Co/CaCO 3 catalyst/support was prepared by wet impregnation method. The crystal size of the catalyst was identified using XRD. Acidified functionalized multiwalled carbon nanotubes (MWCNT) were produced from oxidation of multi-walled carbon nanotubes by mixture of H 2 O 2 ? HNO 3 in a ratio of 1:3 (v/v) at 25°C. The structure and purity of synthesized functionalized CNTs were examined by TEM, N 2 -BET method and thermogravimetric analysis. The functional groups produced at CNTs surface were investigated using FTIR spectroscopy.

Doxycycline (DOX) and amoxicillin (AMOX) are important Broad-spectrum antibiotics used in treating multiple human and animal diseases. For the sake of exploring novel medical applications, both antibiotics were loaded into magnesium aluminium layer double hydroxide (Mg-Al)/LDH nanocomposite through the co-precipitation method. The synthesized materials were characterized by XRD, FT-IR, particle size analysis, FESEM and HRTEM. Acute toxicological studies were conducted using median lethal dose LD 50 , where a total number of 98 rats (200–150 gm) of both sexes were used. An experimental wound was aseptically incised on the anterior-dorsal side of each rat, while 98% of pure medical ethanol was used for ulcer induction. Acute toxicity, wound closure rate, healing percentages, ulcer index, protective rate and histopathological studies were investigated. Antibiotic Nanocomposites has significantly prevented ulcer formation and improved wound healing process to take shorter time than that of the typical processes, when compared with that of same drugs in microscale systems or commercial standard drugs. These results were confirmed by the histopathological findings. By converting it into the Nanoform, which is extremely important, especially with commonly used antibiotics, novel pharmacological properties were acquired from the antibiotics. The safe uses of DOX/LDH and AMOX/LDH Nanocomposites in this study were approved for biomedical applications.

Ti–Fe chitosan (LDH) nanoparticles with nitrate intercalated anions as a novel adsorbent were produced via milling technique. The synthesized LDH was characterized by XRD, FT-IR, BET surface area, zeta potential, FESEM, and HRTEM. The adsorption capability of novel catalyst was under study with regard to several pollutants in the wastewater (phosphate, cadmium, and benzoquinone) in single and multiple solutions. Ti–Fe chitosan LDH demonstrated high activity toward cadmium and benzoquinone and succeeded to remove 98% of both and 63% of phosphate in wastewater at pH = 8. However, in multiple solutions, the results reached 58, 95, and 82% removal of cadmium, benzoquinone, and phosphate, respectively, at the same pH. The kinetics and mechanism of adsorption strength over the adsorbent were further studied. Furthermore, the adsorption of cadmium was confirmed by potentiometric analysis. Astonishingly, the novel LDH indicates acceptable antimicrobial activities against some species of bacteria and fungi.

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