To lower the rate of mild steel industrial corrosion, the nanoparticle-modified activated carbon (NMAC) is utilized. Coprecipitation technique was used to synthesize activated carbon (AC) and nanoparticle ZnO-or NiO-modified activated carbon (NMAC). The surface morphology and size of the resulting modified nanoparticle and carbon steel were characterized by SEM, EDS, FTIR and TEM analysis. The corrosion rate and inhibition efficiency of mild steel is calculated by weight reduction method in 1 M HCl solution. The corrosion rate of mild steel decreased with modified activated carbon, especially NiO NPs. In NiO NPs and NiO-AC nanocomposites, mild steel inhibition efficiency in 1 M HCl at ambient temperature is 43.69% and 38.59%, respectively.
This study investigates the physicochemical and thermal properties of styrene–butadiene rubber (SBR) nanocomposite foam. Nano-calcium carbonate (CaCO3) was prepared from eggshells (ESs) waste. Sponge rubber nanocomposites were prepared and were irradiated by electron beam (EB) radiation at 25, 75, and 150 kGy. Their physicochemical properties, including foam density, compression set (CS), hardness, abrasion loss, and expansion ratio, and their thermal stability were investigated. The physicochemical properties were enhanced by adding 2.5 phr of a foaming agent. Among the composites examined, the foam composites containing nano-CaCO3 had the lowest CS, abrasion loss, and expansion ratio and the highest hardness and foam density. The results confirmed that the thermal stability was improved by incorporating nano-CaCO3 into the SBR foam and as the radiation dose increased. The sponge containing nanoclay demonstrated an intermediate behavior, whereas that with CaCO3 nanoparticles showed low average cell diameter and size and high cell wall thickness. The radiation process enhanced the foam density, CS, abrasion loss, hardness, and thermal property of the developed nanocomposites by inducing the formation of intermolecular crosslinks within the composite matrix. The results showed that physicochemical properties improved by increasing the radiation dose at 25 kGy.
Due to its simplicity and eco-friendly, the use of plants to create metal oxide nanoparticles has recently attracted a lot of attention. Consequently, the purpose of this study was to generate CuO NPs utilizing two different techniques, including a synthetic approach and an aqueous extract of Moringa oleifera leaves (M-CuO NPs) (S-CuO NPs). Nanoparticles produced were evaluated by SEM, EDX, TEM and XRD, to considering the creation of CuO NPs and to determine the morphological, elemental constitution and size the sample. The average size 14.95 and 35.73 nm for S-CuO and M-CuO NPs respectively, having potentials for application as inhibitor in corrosion of MS. The inhibition and adsorption properties of prepared M-CuO NPs and S-CuO NPs on MS in 1M HCl were investigated using the wt reduction assessment. The maximal IEof prepared M-CuO NPs and S-CuO NPs was 95.06% and 92.10%, respectively, at 1000 ppm. The IE % improves with greater concentration of the prepared M-CuO NPs and S-CuO NPs. According to the findings, M-CuO NPs are the most effective green potential inhibitor for MS in acidic conditions. It is demonstrated that the Langmuir isotherms are obeyed by the produced CuO NPs and MS substrate.
The utilization of plants to produce metal oxide nanoparticles has recently received a lot of attention due to its ease of usage and environmental friendliness. Therefore, the aim of this study was to synthesize CuO NPs using two distinct methods, including an aqueous extract of moringa oleifera leaves (M-CuO NPs) and a synthetic approach (S-CuO NPs). Nanoparticles produced were evaluated by SEM, EDX, TEM and XRD, to consider the creation of CuO NPs and to determine the morphological, elemental constitution and size the samples. The average particles size 14.95 and 35.73 nm for S-CuO and M-CuO NPs, respectively, is having potentials for application as inhibitor in corrosion of MS. The inhibition and adsorption properties of prepared M-CuO NPs and S-CuO NPs on MS in 1 M HCl were investigated using the wt reduction assessment. The maximal IE of prepared M-CuO NPs and S-CuO NPs was 95.06% and 92.10%, respectively, at 1000 ppm. The IE % improves with greater concentration of the prepared M-CuO NPs and S-CuO NPs. According to the findings, M-CuO NPs are the most effective green potential inhibitor for MS in acidic conditions. It is demonstrated that the Langmuir isotherms are obeyed by the produced CuO NPs and MS substrate.
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