Lutfi Wiandani

Technical Report on Bamboo-Mediated Synthesis of Zinc Oxide Nanostructures Abstrak This study demonstrates the eco-friendly green synthesis of Zinc Oxide (ZnO) nanoparticles using bamboo leaf extract (Bambusa sp.) as a natural reducing and stabilizing agent. The extraction process was optimized at 80°C to preserve essential phytochemicals, which subsequently reacted with Zinc Sulfate Heptahydrate precursors. The resulting nanoparticles were synthesized through a controlled stirring and heating process, followed by an aging period of 24 hours to ensure structural stability. Characterization was performed using UVVis Spectrophotometry and FTIR to verify the optical properties and functional group interactions. The synthesized ZnO powder shows significant potential for photocatalytic applications in degrading organic pollutants. Keywords: Green Synthesis, Zinc Oxide, Bamboo Leaf Extract, Photocatalysis, Characterization. A. Preparation of bamboo leaf powder 1. Washing : Thoroughly wash the bamboo leaves using distilled water to remove impurities. 2. Drying : Air-dry the leaves at room temperature (avoid using high-temperature ovens). 3. Grinding : Grind the dried leaves using a blender until a fine powder is obtained. B. Extraction Process 1. Measurement: Weigh 10 grams of the bamboo leaf powder. 2. Mixing: Combine the powder with 100 ml of distilled water. 3. Heating: Boil the mixture at 80°C for 10 minute 4. Cooling: Allow the extract to cool down to room temperature. 5. Filtration: Filter the mixture using filter paper. 6. Storage: Store the resulting filtrate (clear liquid) for the next synthesis step. C. Synthesis of Zinc Oxide Nanoparticles 1. Preparation: Dissolve Zinc Sulfate Heptahydrate (𝑍𝑛𝑆𝑂46𝐻2 𝑂) into 200 ml of distilled water. 2. Stirring: Stir continuously using a magnetic stirrer until the solution is completely dissolved. 3. Mixing: Take 50 ml of the previously filtered extract and add it to the Zinc Sulfate solution. 4. Reaction: Heat and stir the mixture for 20 minutes; during this process, add 0.1 M NaOH dropwise. 5. Monitoring: Check the pH level as the mixture changes color and a suspension (floating particles) begins to form. 6. Aging: Allow the solution to sit undisturbed for 24 hours. 7. Collection: Filter the mixture, collect the precipitate, and dry it in an oven at 80°C for 4 hours until it transforms into a powder.