For synthesis of nanoparticles in general is very important to have 3 things defined: metallic precursor (for AgNPs, AgNO3 tipically), reducing agent and stabilizing agent. The stabilizing agent is the one who determines how big or small your particles will or can be, so it is crucial to choose one who is able to give your AgNPs the desired size in order to accomplish the utility you want to give them. Nowadays there are a lot of reducing (i.e. plant extracts) and stabilizing agents (i.e. cyclodextrins) who allow your method to be green and enviromental friendly, and make more sense with the purpose of use you want to give them (dye degradation).

Article Plant Extract as Reducing Agent in Synthesis of Metallic Nan...

Article A green synthesis of copper nanoparticles using native cyclo...

Dear Sir. Concerning your issue about the protocal for chemical synthesis of silver nanoparticles . Silver nanoparticles (NPs) have been the subjects of researchers because of their unique properties (e.g., size and shape depending optical, antimicrobial, and electrical properties). A variety of preparation techniques have been reported for the synthesis of silver NPs; notable examples include, laser ablation, gamma irradiation, electron irradiation, chemical reduction, photochemical methods, microwave processing, and biological synthetic methods. This review presents an overview of silver nanoparticle preparation by physical, chemical, and biological synthesis. The aim of this review article is, therefore, to reflect on the current state and future prospects, especially the potentials and limitations of the above mentioned techniques for industries. I think the following below links may help you in your analysis:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4326978/

http://iopscience.iop.org/article/10.1088/1757-899X/60/1/012061/pdf

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.825.4837&rep=rep1&type=pdf

Thanks

More valuable answer got, that is what I need !

thank you !!