CD Skripsi
Aktivitas Fotokatalis Nanopartikel Perak Yang Disintesis Menggunakan Ekstrak Kulit Citrullus Lanatus
This study reviews how much silver (Ag) resulting from extraction of silver nitrate (AgNO3) using yellow watermelon rind (citrullus lanatus). The purpose of the research is to determine the ability of nanoparticle (Ag) photo catalysts with different volume comparisons based on silver nitrate (AgNO3). Silver nitrate was extracted using the fruit peel of citrullus lanatus, where citrullus lanatus was washed and separated from the flesh and then blended, 100 gr of rind pulp filtered using Whatman paper No. 1 to obtain a dark green solution, after that citrullus lanatus rind extract solution given DM 400 ml aqua and AgNO3 0.1699 gr in 400 ml aqua DM. Silver solution and fruit peel extract solution were then synthesized in a volume ratio of 1: 3, 2: 2, and 3: 1 and used NaOH to increase the pH of the solution to 10 measured using indicator paper. The results showed that the sample colloids were yellow-brownish in color. This proves that Ag nanoparticles have been formed. The UV-Vis results show that the sample absorption spectrum is Ag 1: 3 with absorption peaks at 430 nm and narrow absorption peaks indicating particle size that is much smaller than that of Ag 2: 2 and sample 3: 1. The ability of the photo catalyst to release degradation of methylene blue within 30 minutes, 90 minutes, and 150 minutes using UV-Vis and TEM. The UV-Vis and TEM results show that the Ag 1: 3 sample is the most effective with a reaction rate of 5.5. 10-5 s-1 and particle size in the interval of 6-48 nm.
Keywords: citrullus lanatus, extraction, biosynthesis, silver nanoparticles
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