Corrosion Research Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Duzce University , 81620, Duzce, Turkey.
Centre of Research Excellence in Corrosion, Research Institute, King Fahd University of Petroleum and Minerals , Dhahran 31261, Saudi Arabia.
ACS Appl Mater Interfaces. 2017 Feb 22;9(7):6376-6389. doi: 10.1021/acsami.6b14153. Epub 2017 Feb 7.
This study has been designed to boost the inhibition efficiency and stability of carboxymethyl cellulose (CMC) and this objective has been achieved by incorporating silver nanoparticles (AgNPs) generated in situ by reduction of AgNO using natural honey into CMC matrix. Characterization of CMC/AgNPs composite was done using transmission electron microscope (TEM), Fourier transform infrared (FTIR) spectroscopy, ultraviolet-visible spectroscopy (UV-vis), scanning electron microscope (SEM), and energy dispersive X-ray spectroscopy (EDS). Weight loss, electrochemical (dynamic electrochemical impedance spectroscopy, electrochemical impedance spectroscopy, and potentiodynamic polarization) supported by surface assessment (SEM, atomic force microscope, and FTIR) techniques are deployed for the anticorrosion studies of CMC/AgNPs on St37 specimen in 15% HSO medium. CMC/AgNPs performs better than CMC. At 25 °C, optimum inhibition efficiency of 93.94% is afforded by 1000 ppm of CMC/AgNPs from DEIS method. Inhibition efficiency of 96.37% has been achieved from weight loss method at 60 °C. CMC/AgNPs is found to retard both the anodic and cathodic reactions and the adsorption is explained using Langmuir adsorption isotherm. AFM and SEM graphics reveal smoother surface for St37 sample in the acid solution containing inhibitor than inthe solution without the inhibiting agent. FTIR and EDS results show that CMC/AgNPs molecules were adsorbed on the metal surface.
本研究旨在提高羧甲基纤维素（CMC）的抑制效率和稳定性，通过将在 CMC 基质中就地还原 AgNO 生成的银纳米粒子（AgNPs）掺入 CMC 中来实现这一目标。使用透射电子显微镜（TEM）、傅里叶变换红外（FTIR）光谱、紫外可见光谱（UV-vis）、扫描电子显微镜（SEM）和能量色散 X 射线光谱（EDS）对 CMC/AgNPs 复合材料进行了表征。通过重量损失、电化学（动态电化学阻抗谱、电化学阻抗谱和动电位极化）以及表面评估（SEM、原子力显微镜和 FTIR）技术对 CMC/AgNPs 在 15%HSO 介质中对 St37 试样的腐蚀进行了研究。CMC/AgNPs 的性能优于 CMC。在 25°C 下，从 DEIS 方法中，1000ppm 的 CMC/AgNPs 提供了 93.94%的最佳抑制效率。在 60°C 下，从重量损失法获得了 96.37%的抑制效率。发现 CMC/AgNPs 可以延缓阳极和阴极反应，吸附通过 Langmuir 吸附等温线得到解释。AFM 和 SEM 图形显示，在含有抑制剂的酸溶液中，St37 样品的表面比不含抑制剂的溶液更光滑。FTIR 和 EDS 结果表明，CMC/AgNPs 分子被吸附在金属表面上。
