Fatima Musbah Abbas
Carbon/Copper Oxide Composite (CCOC) was prepared by carbonization mixtures of Pre-Carbonized Date Palm Leaves (PCDPLs), tropical fruits Mata Kucing Seeds (Euphoria Malaiensis) (MKS) and Copper (Cu) powder in a nitrogen environment. The obtained CCPs were characterized by XRD and ultrasonic techniques in terms of crystallite dimensions (d002, Lc and La), Lattice Constant (a), Surface Area (SSA), Spring Length (SL), Young's Modulus (YM) and Electrical Conductivity (EC). Results of XRD profiles showed that the structure of the composite produced is polycrystalline with a two-phase structure that is formed of the composite carbon and copper oxide. Possibly the copper oxide is synthesized due to decomposition of Cu into nanoparticles' vapour during the carbonization process. The Crystallite dimension (d002, Lc and La), SAA and SL were found to change systematically with increasing PCDPLs% concentrations. The measurements of the lattice constant were found in an arrangement of 4.21Å-4.48 Å, which is close to that of the reviewed value (4.68 Å), proving the crystalline structure of copper oxides. The C. Yield and YM were increased with increase (MKs+Cu). The frequency dependent conductivity was successively analyzed by the Cole-Cole plot, indicating that lower conductivity behavior with little improvement with increasing (MKS+Cu) content.
Fatima Musbah Abbas
The Carbon/Copper Oxide Nanowire (CCONW) composite was prepared with direct mixers of self-adhesive Per-Carbonized Date Palm Leaves (PCDPLs), hydrocarbon (Carbon Black) (CB) and Copper (Cu) powder at 1000 ?. The copper has been added to improve it is electrical performance. The CCONW generated was examined using X-Ray Diffraction (XRD), Energy Dispersion X-Ray Diffraction (EDXD), scan probe image pressing, Scanning Electron Microscope (SEM), ultrasonic methods and a four-point probe. A check-up experiment was also applied to confirm the growth of the Cu2O nanowire was carried out using a Si/SiO2 plate coated with a thin layer of Ni annealed at 400 ? and heat treated at 800 ? under a nitrogen and methane environment. The X-ray diffraction results show an h highly ordered composite that has become polycrystalline with a crystalline structure in good agreement with pure graphite. The X-ray also observed a Copper Oxide (Cu2O) in the composite structure, which was identified as Cu2O, nanowire by (EDXD) Techniques. The surface morphology of the composite surface displayed agglomerates of particle size, indicative of dispersion, which is probably the result of improving mechanical performance. The results of YM increased and electrical conductivity increased from 13.9 GPA to 26.98 GPA and from 5.77 (Ω cm) -1 to 35.85 (Ω cm) -1 to increase the (CB+Cu) content from 0% to 50%, respectively. YM (26.98 GA) of CCONW prepared by 50% PCDPL equals pure graphite (27 GA). In addition, the porosity varied between 0.27 % and 0.42 % reduced with an increase in the (CB+Cu) content. These findings show that CB and Cu are important in converting the non-graphitic structure into a more graphitic structure and synthesizing copper oxide nanowires on the composite surface, with the internal microstructure mainly micro porous. Final results concluded that an optimum interaction between carbon, carbon black and copper oxide nanowires with a higher mechanical and electrical conductivity and properties on surface area, mainly micropors/micropors. The scan probe image pressing techniques were also used to analyse the nanowire structure.
Abubaker Elsheikh Abdelrahman
Activated Carbon (AC) is a porous material widely utilized in energy storage, electromagnetic wave absorption and, among many other applications. Despite the economic and environmental benefits of recycling date palm leaves (Phoenix dactylifera L.) into AC, there is limited research on the characterization of AC produced via date palm leaves, particularly in pellet form. The study aims to evaluate the structure, mechanical and electrical properties of “Activated Carbon Pellets (ACPs)” derived from “Pre-Carbonized Date Palm Leaves (PCDPLs)” with varying concentrations of LiCl. The ACPs were ball-milled, treated with LiCl and pelletized before undergoing carbonization at 700 ?. The resulting Activated Carbon Pellets (ACPs) were analyzed for particle size distribution, bulk density, Young’s Modulus (YM), crystallite dimension, Specific Surface Area (SSA) and Electrical Conductivity (EC). The percolation theory was applied to analyze YM data. Results indicated that YM increased with LiCl concentration, with the highest value observed at 1.2 M LiCl. The critical density for YM, determined using percolation theory, was 0.7 g/cm³. The ACPs exhibited SSA ranging from 1099.1 to 1545.8 m²/g and the EC varied from 0.531 and 0.642 × 10? (Ohm’m)?¹, demonstrating a significant enhancement compared to untreated samples. In conclusion, LiCl activation, combined with controlled heating, significantly improves the physical and electrical properties of ACPs made from date palm leaves, with bulk density being a key factor in these improvements.
Molecular Biology: Open Access received 607 citations as per Google Scholar report
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