Journal
MATERIALS RESEARCH EXPRESS
Volume 4, Issue 8, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/aa8088
Keywords
surface plasmon resonance; nucleation; confluence graph; silver acetate; green chemistry; sodium hydroxide
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Funding
- University Grants Commission (UGC) [F.4-1/2006 (BSR)/8-10/2007(BSR)]
- Science and Engineering Research Board (SERB): Ramanujan Fellowship Grant [SR/S2/RJN-139/2011]
- Department of Science and Technology (DST)
- UGC [20-1/2012 (BSR)/20-1(10)/2012(BSR)]
- Department of Biotechnology (DBT), Ministry of Science and Technology: Ramalingaswami Fellowship Grant [BT/RLF/Re-entry/51/2011]
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Herein, we report green synthesis of silver nanoparticles, by confluence graph described previously using acetate as the stabilizer as well as a reducing agent. The process involves use of 'green' chemicals and benign synthesis conditions. The synthesized nanoparticles were tuned for their surface plasmon resonance by sodium hydroxide addition and scanned between 400 to 800 nm to study the hyperchromic effect. As the concentration of sodium hydroxide increased, the surface plasmon resonance of the silver nanoparticles at 420 nm increased (hyperchromic effect). The synthesized silver nanoparticles were further characterized by TEM, for morphology analysis and laser scattering for the electromagnetic properties of nanoparticles. Our method may provide a gateway for intensive exploration of innovative approaches in synthesizing silver nanoparticles and tuning (hyperchromic effect) their localized surface plasmon resonance by using sodium hydroxide, which has tremendous utility in diverse application sectors.
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