Silica is a chemically inert molecule with an ability of adsorption on the metal to form a layer of barrier for preventing it from the atmospheric damage. However, a larger amount of silica is required for producing the impactful anticorrosive activity, leading to toxic and carcinogenic effects in the environment, and thus limiting the applications of silica. Application of nanotechnology in the synthesis of silica nanocomposites provides, for example, the advantages of better biocompatibility, systemic stability, ineffective response towards pH changes large multifunctionality. However, uses of harmful solvent, low penetration and toxicity, remain the major concerns for silica nanoparticles. Synthesis of silica nanocomposites with green technology will be an attractive approach to offer reduction in toxicity associated with the silica, higher surface area, effective penetration, easy spreadability, better adsorption over the metal surface and also provided the controlled release of chemical agents on contact with metal surface. The present article enlightens the use of green syntheses in the formulation of silica nanocomposites for corrosion inhibition in comparison to conventional synthetic method and provides the insights of various green nanocarriers such as nanocontainers, sol-to-gel nanoparticles, metallic nanostructures and silica nanocomposites for enhancing the proficiency of corrosion inhibition.

中文翻译：

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将绿色纳米技术与二氧化硅相结合以抑制腐蚀

二氧化硅是一种化学惰性分子，具有吸附在金属上的能力，形成一层屏障，以防止其受到大气损害。然而，产生有影响的防腐活性需要大量的二氧化硅，导致对环境的毒性和致癌作用，从而限制了二氧化硅的应用。纳米技术在二氧化硅纳米复合材料的合成中的应用提供了例如更好的生物相容性、系统稳定性、对 pH 变化的无效响应、大的多功能性等优点。然而，使用有害溶剂、低渗透性和毒性仍然是二氧化硅纳米粒子的主要问题。用绿色技术合成二氧化硅纳米复合材料将是一种有吸引力的方法，可以减少与二氧化硅相关的毒性，更高的表面积、有效的渗透性、易铺展性、更好的金属表面吸附，并在与金属表面接触时提供化学试剂的受控释放。与传统的合成方法相比，本文启发了绿色合成在二氧化硅纳米复合材料的制备中用于腐蚀抑制，并提供了各种绿色纳米载体的见解，如纳米容器、溶胶-凝胶纳米颗粒、金属纳米结构和二氧化硅纳米复合材料，用于增强缓蚀能力。