Suganya Muthukumar, Preethi Parameswaran Sujatha, Narenkumar Jayaraman, Prakash Arumugam Arul, Devanesan Sandhanasamy, AlSalhi Mohamad S, Rajasekar Aruliah, Nanthini Ayyakkannu Usha Raja
Department of Biotechnology, Mother Teresa Women's University, Kodaikanal, Tamil Nadu, 624101, India.
Centre for materials engineering and regenerative medicine, Bharath Institute of Higher Education and Research, Selaiyur, Chennai, Tamil Nadu, 600073, India.
Environ Sci Pollut Res Int. 2022 Nov;29(51):77800-77808. doi: 10.1007/s11356-022-21219-5. Epub 2022 Jun 10.
The development of environmentally acceptable benign techniques using purely natural methods is a cost-effective procedure with long-term benefits in all areas. With this consideration, myco synthesized silver nano particles (AgNPs) were studied and it acted as an impending corrosion inhibitor in the environment. Initially, AgNPs were evaluated by physical and surface characterizations and this evidence demonstrated that RYRE's water-soluble molecules played an essential role in the synthesis of AgNPs in nano spherical size. The myco synthesized of AgNPs has showed an antibacterial activity against corrosive bacteria in cooling water system (CWS). Hence, the AgNPs were used in biocorrosion studies as an anticorrosive agent along with AgNO and RYRE was also checked. For this experiment, the copper (Cu) metal (CW024) which is commonly used was selected, the result of corrosion rate was decreased, and inhibition efficiency (82%) was higher in the presence of AgNPs in system IV. Even though, AgNO and RYRE had contributed significant inhibition efficiency on Cu at 47% and 61%, respectively. According to XRD, the reaction of AgNPs on Cu metal resulted in the formation of a protective coating of FeO against corrosion. EIS data also indicated that it could reduce the corrosion on the Cu metal surface. All of these findings point out the possibility that the myco-synthesized AgNPs were an effective copper metal corrosion inhibitor. As a result, we encourage the development of myco-synthesized AgNPs, which could be useful in the industrial settings.
开发使用纯天然方法且环境可接受的良性技术是一种具有成本效益的程序，在所有领域都有长期效益。基于这一考虑，对真菌合成的银纳米颗粒（AgNPs）进行了研究，其在环境中可作为一种潜在的腐蚀抑制剂。最初，通过物理和表面表征对AgNPs进行了评估，该证据表明RYRE的水溶性分子在纳米球形尺寸的AgNPs合成中发挥了重要作用。真菌合成的AgNPs已显示出对冷却水系统（CWS）中腐蚀性细菌的抗菌活性。因此，AgNPs与AgNO一起作为防腐剂用于生物腐蚀研究，同时也对RYRE进行了检测。对于该实验，选择了常用的铜（Cu）金属（CW024），在系统IV中存在AgNPs的情况下，腐蚀速率降低，抑制效率（82%）更高。尽管如此，AgNO和RYRE对Cu的抑制效率分别为47%和61%，也有显著贡献。根据X射线衍射（XRD），AgNPs与Cu金属的反应导致形成了一层防止腐蚀的FeO保护膜。电化学阻抗谱（EIS）数据也表明它可以减少Cu金属表面的腐蚀。所有这些发现都指出真菌合成的AgNPs有可能是一种有效的铜金属腐蚀抑制剂。因此，我们鼓励开发真菌合成的AgNPs，其可能在工业环境中有用。
