Determination of Gold Nanoparticles Sizes via Surface Plasmon Resonance
Journal Title: IOSR Journal of Applied Chemistry (IOSR-JAC) - Year 2018, Vol 11, Issue 7
Abstract
Surface plasmon resonance technique has been highly employed in determination of the sizes of metallic nanoparticles (NPs). Generally, NP size has been viewed as a function of SPR wavelength value only, with every value of this wavelength being associated with one particular size. In this paper, gold NPs (AuNPs) prepared through the citrate reduction method with a variation in the amount of citrate used on gold (III) chloride precursor was studied. Using UV-Vis spectra analysis of the synthesized NPs in colloidal form, SPR absorption band with a wavelength ranging from 518 to 520 nm was detected. At 518 and 519 nm peaks, the recorded average NP size was 12 nm while 520 nm coincided with NPs of diameters 11 and 13 nm. This indicated that small and large AuNPs within the plasmonic size can present similar high resonance. We attribute this observation to the atomic interactions within the NPs solution hence the availability of the high density of the surface (resonance) electrons from the NPs surface atoms.
Authors and Affiliations
Paul K. Ngumbi, Simon W. Mugo, James M. Ngaruiya
Keywords
Related Articles
- EP ID EP414309
- DOI 10.9790/5736-1107012529.
- Views 184
- Downloads 0
Analysis of Metabolic Syndrome in females with Polycystic Ovarian Syndrome
Backgrounds: The metabolic syndrome (MBS) is a cluster of cardiovascular risk factors associated with excess of fat. The MBS is more common among women in PCOS than in normal women particularly in those with hyperinsulin...
Prospect of African Bush Mango, kapok, Sesame, and Avocado Seeds Oils as a Feedstock for Biodiesel Production over CaSO4/Al2O3 Catalyst
Oils extracted from the seeds of African bush mango (Irvingiag abononsis), Sesame (Sesamum indicum), Avocado (Persea americana) and Kapok (Ceiba pentandra) were transesterified with CaSO4/Al2O3 catalyst to biodiesel. Hig...
An Introduction to Nanophotonics and its Various Applications
Group III-nitride semiconductor materials especially AlGaN are key-emerging candidates for the advancement of ultraviolet (UV) photonic devices. Numerous nanophotonics approaches using nanostructures (e.g., nanowires, na...
A Review - Production of Ribbed Smoked Sheet in Chattogram Hill Tracts of Bangladesh and Assessment of Heavy Metals in Itself.
Hevea braciliensis is a tree discharged white colored latex that is utilized to produce natural rubber. Generally, two types of rubber sheet such as Ribbed Smoked Sheet (RSS) and Air Dried Sheet (ADS) are produced in the...
Review of the Schrödinger Wave Equation
The objective of this work is to investigate the Schrödinger equation, analyzing the mathematical concepts employed and relating them to other areas of knowledge. In quantum mechanics, the Schrödinger equation is a parti...