The dynamic evolution of nanocatalyst particle shape and carbon composition during the initial stages of single-walled carbon nanotube growth by chemical vapor deposition synthesis is investigated. Classical reactive and ab initio molecular dynamics simulations are used, along with environmental transmission electron microscope video imaging analyses. A clear migration of carbon is detected fro...

Manufacturable nanodevices must now be the predominant goal of nanotechnological research to ensure the enhanced properties of nanomaterials can be fully exploited and fulfill the promise that fundamental science has exposed. Here, we test the electrical stability of Au nanocatalyst-ZnO nanowire contacts to determine the limits of the electrical transport properties and the metal-semiconductor ...

A bioinspired peptide amphiphile nanofiber template for formation of one-dimensional Pd nanostructures is demonstrated. The Pd and peptide nanocatalyst system enabled efficient catalytic activity in Suzuki coupling reactions in water at room temperature. The nanocatalyst system can be easily separated and reused in successive reactions without significant loss in activity and structural integrity.

The present work involved the preparation of mixed composite derivatives from phosphate glass and polyaniline together with additional doped samples containing increasing CuO or ZnO (3→10 mol%). All prepared pure their composites were characterized by structural FTIR analysis, X-ray diffraction examinations surface scanning electron microscope (SEM). Further antimicrobial properties base glass,...

Suzuki-Miyaura coupling reaction catalyzed by the palladium (Pd)-based nanomaterials is one of the most versatile methods for the preparation of biaryls. However, use of organic solvents as reaction medium causes a big threat to environment due to the generation of toxic byproducts as waste during the work up of these reactions. Therefore, the use of water as reaction media has attracted tremen...

The ozonation reaction in a bubble column reactor (BCR) has been widely used the removal of phenol from wastewater, but efficiency this type is limited because low ozone solubility and reactivity system. In present study, degradation BCR was enhanced by using α-Al2O3 as packing material ZnO nanocatalyst. diameter height were 8 cm 180 cm, respectively. gas distributor designed to include 52 hole...

The physicochemical indicators of d-metal oxides (NiO, CuO, MnO, FeO, PbO, ZnO) which are heterogeneous catalysts for the transesterification process sunflower oil triglycerides by ethanol and butan-1-ol have been determined. available specific surface area, acidity basicity, as well hydrogen potential change catalyst suspension in water were determined oxides. area was titration their aqueous ...

As a typical pollutant, methylene blue poses serious threat to the environment and human health. Oily sludge pyrolysis residue loaded with metal oxides could be used prepare composite materials, which is not only an effective way treat oily sludge, but also possible method pollutants. In this paper, materials (AC-CuO, AC-ZnO, AC-TiO2) were prepared by residue-loaded CuO, ZnO, TiO2 directly, cha...