Heru Suryanto, Uun Yanuhar, Ahmad Atif Fikri, Gunanti Mahasri
Nanoparticles are widely used for their simplicity, nontoxic, low-production cost, pollutants free, and eco-friendly process. Green synthesis of nanosilver using microalgae is an environmentally benign and emerging technique. The current study aims to synthesize the nanosilver with a chitosan capping agent of the microalgae Chlorella vulgaris. The algal C.vulgaris extract was prepared with a variation of 3.0 g/L, 5.0 g/L, and 6.0 g/L. As a comparison, we use nanosilver synthesis using NaBH4. Extract algal treated with silver nitrate solution to synthesize nanosilver with a chitosan capping agent. Biosynthesized nanosilver was characterized with UV-Visual spectroscopy, particle size analyzer (PSA) analyzer, SEM, and EDS. Results show that nanosilver is successfully synthesized with UV-Visual Spectroscopy results at a wavelength of 400 nm. EDS analysis indicates the presence of silver metal on synthesis results at 3 kV. The PSA confirms that nanosilver produced by adding C.vulgaris of 3.0, 5.0, and 6.0 g/L results in particle size distribution from 57.8 nm – 462 nm, 17.2 nm – 97.2 nm, and 28.9 nm – 81.8 nm, respectively. It is higher when compared with synthesis nanosilver using NaBH, resulting in particle size distribution from 2.26 nm to 171.9 nm. It is confirmed that adding C.vulgaris of 5.0 and 6.0 g/L has successfully made a nanosilver. © 2023 Novel Carbon Resource Sciences. All rights reserved.
Center of Excellence for Cellulose Composite (CECCom), Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65141, Indonesia; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Brawijaya University, Jl. Veteran Malang, East Java, 65145, Indonesia; Faculty of Fisheries, Airlangga University, Jl. Airlangga No.4-6, East Java, Surabaya, 60115, Indonesia