Dear Sedef Ozel thank you for your interesting technical question. The "green" synthesis of silver nanoparticles using plant extracts is already a well-investigated research topic. Please have a look e.g. at the following potentially useful articles:
1. Synthesis of silver nanoparticles using plants extract and analysis of their antimicrobial property
Article Synthesis of silver nanoparticles using plants extract and a...
2. Synthesis of Silver Nanoparticles Using Aqueous Extract of Medicinal Plants’ (Impatiens balsamina and Lantana camara) Fresh Leaves and Analysis of Antimicrobial Activity
Article Synthesis of Silver Nanoparticles Using Aqueous Extract of M...
Both articles are freely available as public full texts on ResearchGate.
For the use of common ivy, please also see the following relevant article:
Antibacterial Activity of Slver Nanoparticles Synthesized by Using Extracts of Hedera helix
Article Antibacterial Activity of Slver Nanoparticles Synthesized by...