CD Skripsi
Potensi Nanopartikel Perak Hasil Biosintesis Menggunakan Ekstrak Kulit Buah Kecapi Sebagai Sensor Kolorimetri Logam Merkuri
Mercury detection using colorimetric methode based on color change of silver
nanoparticles is simple alternative, accurate and cost-effective method. This study
aims to synthesize silver nanoparticles using sentul fruit peel extract as an
environmentally friend reducing gent. Silver nanoparticles were prepared by
varyating the ratio of the volume of AgNO3 solution with the extract, namely, 4:1,
3:2, 1:1, 2:3, and 1:4. All solutions were heated at 80°C for 30 minutes. Colloidal
silver nanoparticles were tested by metallic mercury detector at various
concentrations of Hg ions, namely, 1, 20, 40, 60, 80, 100, 150, 200 and 250 ppm.
Ag nanoparticles prepared with a volume ratio of AgNO3 solution with the extract
(AgSK-4:1) showed the most significant color change. The sample of AgSK-4:1
is the most sensitive sample in detecting mercury metal. The optical properties,
morphology and structure of AgSK were characterized using UV-Vis
Spectroscopy, Transmission Electron Microscope, and X-Ray Diffraction. The
UV-Vis absorption peak shows the absorbance peak for the formation of silver
nanoparticles at a wavelength of 405 - 407 nm. The morphology of the TEM
characterization exhibits round and oval shapes with smaller sizes as the AgNO3
volume increased, namely, 7.073 nm. The structure properties of AgSK possesses
face centered cubic structure with four diffraction peaks at 2θ = 38.366°, 44.059°,
64.724°, and 77.420°. In conclussion, the silver nanoparticles samples synthesized
with the addition of sentul peel extract have the potential to detect mercury metal.
Keywords : Silver Nanoparticles, Sentul Skin, Mercury, Colorimetry
Tidak tersedia versi lain