Chemistry Department, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia.
Chemistry Department, Faculty of Science, Sohag University, Sohag 82524, Egypt.
Molecules. 2021 Nov 19;26(22):7006. doi: 10.3390/molecules26227006.
Novel environmentally-friendly corrosion inhibitors based on primary aminated modified cellulose (PAC) containing nano-oxide of some metals (MONPs), for instance iron oxide nanoparticles (FeONPs), copper oxide nanoparticles (CuONPs), and nickel oxide nanoparticles (NiONPs), were successfully synthesized. The as-prepared PAC/MONPs nanocomposites were categorized using Fourier transform infrared spectroscopy (FT-IR), transmission electron microscope (TEM), field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and selected area diffraction pattern (SAED) techniques. The data from spectroscopy indicated that successful formation of PAC/MONPs nanocomposites, as well as the TEM images, declared the synthesized PAC/FeONPs, PAC/CuONPs, and PAC/NiONPs with regular distribution with particle size diameters of 10, 23 and 43 nm, respectively. The protection performance of the as-prepared PAC and PAC/MONPs nanocomposites on the corrosion of C-steel in molar HCl was studied by the electrochemical and weight-loss approaches. The outcomes confirmed that the protection power increased with a rise in the [inhibitor]. The protection efficiency reached 88.1, 93.2, 96.1 and 98.6% with 250 ppm of PAC/CuONP, PAC/FeONPs, and PAC/NiONPs, respectively. PAC and all PAC/MONPs nanocomposites worked as mixed-kind inhibitors and their adsorption on the C-steel interface followed the isotherm Langmuir model. The findings were reinforced by FT-IR, FE-SEM and EDX analyses.
基于含有纳米氧化物的主胺化改性纤维素（PAC）的新型环保型腐蚀抑制剂，例如氧化铁纳米粒子（FeONPs）、氧化铜纳米粒子（CuONPs）和氧化镍纳米粒子（NiONPs），已成功合成。采用傅里叶变换红外光谱（FT-IR）、透射电子显微镜（TEM）、场发射扫描电子显微镜（FE-SEM）、能谱（EDX）、X 射线衍射（XRD）和选区衍射花样（SAED）技术对所制备的 PAC/MONPs 纳米复合材料进行分类。光谱数据表明，PAC/MONPs 纳米复合材料的成功形成，以及 TEM 图像表明，成功合成了 PAC/FeONPs、PAC/CuONPs 和 PAC/NiONPs，其粒径分别为 10、23 和 43nm，分布均匀。通过电化学和失重法研究了所制备的 PAC 和 PAC/MONPs 纳米复合材料在摩尔 HCl 中对 C 钢腐蚀的保护性能。结果证实，随着[抑制剂]的增加，保护能力增强。在 250ppm 的 PAC/CuONP、PAC/FeONPs 和 PAC/NiONPs 下，保护效率分别达到 88.1%、93.2%、96.1%和 98.6%。PAC 和所有 PAC/MONPs 纳米复合材料均为混合型抑制剂，其在 C-钢界面上的吸附遵循 Langmuir 等温吸附模型。FT-IR、FE-SEM 和 EDX 分析结果证实了这一点。
