A stagnation point flow past a stretching/shrinking surface in carbon nanotubes (CNTs) with slip effects is investigated in this paper. Applying transformations of similarity, the governing partial differential equations are modified to the nonlinear ordinary differential equations. Afterward, they are numerically solved in Matlab by the bvp4c solver. The single-wall CNTs and multi-wall CNTs are used, including water as a base fluid. The effects of the flow parameters are investigated, shown in the form of graphs, and physically evaluated for the dimensionless velocity, temperature, ski
The aim of this research was to investigate the adsorption properties of anthraquinone modiﬁed carbon nanotube (ACNT) in oily wastewaters containing Pb ions. The modiﬁed adsorbents were characterized using Fourier transform infra-red spectroscopy and SEM analysis. The adsorption and regeneration studies were conducted in batch mode using a Taguchi (L16) orthogonal array to optimize experimental runs. The controllable factors used in this study consisted of: pH of the solution (A); adsorbent dosage (B); adsorbent type (C); contact time (D); temperature (F).
Hydrophobic porous polymeric materials have attracted great interests recently as potential candicate for oil-water separation due to their high selectivity and sorption capacity. Herein, we present a green, simple and cost-effective method to change hydrophilic melamine formaldehyde (MF) foam to hydrophobic carbon nanotubes (CNTs) coated MF foam through an immersion process.
The investigation of fullerenes and especially of carbon nanotubes (CNTs) has opened a totally new window for the development of polymer matrix composites with novel properties and applications. CNTs, which have a number of unexpected properties, both mechanical and electrical, seem to have huge potential as a filler, i.e. as a reinforcement in nanocomposites. With the discovery of carbon nanotubes, the research efforts have been initially concentrated on the better understanding of their processing conditions, modification, and properties.