The current work focusses on the silver nanoparticles (Ag-NPs) that are conveniently green synthesized by Mangifera indica gum powder extract. The absorbance is measured by UV–Vis spectrophotometer at a wavelength of 455 nm that represents the Surface Plasmon Resonance of Ag-NPs. Fourier Transform-Infra Red (FT-IR) spectroscopy confirms the functional groups and reaction mechanisms involved in the green synthesis of Ag-NPs. The elemental analysis of Ag-NPs is carried out by Energy dispersive X-ray (EDAX) spectrum and its surface morphology was studied by High resolution transmission electron microscopy (HR-TEM). The average size of Ag-NPs is found to be around 19 nm in diameter. The crystalline nature of the Ag-NPs is investigated by X-ray diffraction (XRD) and Selected area diffraction (SAED). The Ag-NPs shows better antioxidant activity against free radicals such as 2,2-diphenyl-1-picrylhydrazyl (DPPH) and superoxide anion. Ag-NPs effect on reduction mild steel corrosion is examined using non electrochemical methods. It is proved from experimental tests that the inhibition efficiency increases with increased concentrations of Ag-NPs. The photocatalytic activity of the prepared Ag-NPs under visible light irradiation is assessed by the degradation of methylene blue (MB) dye.

当前的工作集中在由Mangifera indica方便地绿色合成的银纳米颗粒（Ag-NPs）胶粉提取物。用紫外可见分光光度计在455 nm的波长处测量吸光度，该波长表示Ag-NP的表面等离振子共振。傅立叶变换红外光谱（FT-IR）证实了绿色合成Ag-NP的功能基团和​​反应机理。Ag-NPs的元素分析通过能量色散X射线（EDAX）光谱进行，并通过高分辨率透射电子显微镜（HR-TEM）研究了其表面形态。发现Ag-NP的平均尺寸为直径约19nm。通过X射线衍射（XRD）和选择区域衍射（SAED）研究了Ag-NPs的晶体性质。Ag-NPs对自由基（例如2,2-二苯基-1-吡啶并肼基（DPPH）和超氧阴离子）具有更好的抗氧化活性。使用非电化学方法检查了Ag-NPs对还原低碳钢腐蚀的影响。从实验测试证明，抑制效率随着Ag-NPs浓度的增加而增加。通过亚甲基蓝（MB）染料的降解评估了制备的Ag-NP在可见光照射下的光催化活性。