Devi Ragita Putri Pratiwi, Arina Wahdania, Iqbal Ainur Rizki, Arfinda Mulya Dewi, Veldiana Oktaviana Putri, Lydia Rohmawati
The natural material that can be used as the primary material for making MgO nanoparticles is Bangkalan dolomite. In its application, MgO needs to be combined with Carbon Nanofibers (CNFs) to become MgO@CNFs. CNFs have good physicochemical and mechanical properties, so it is exciting to be a supporting material. These nanocomposite biosensors can be utilized in several applications, such as supercapacitors and biosensors. The method in this study was grinding, sifting dolomite limestone, and weighing 100 grams of dolomite, calcination at 300°C for 30 minutes, followed by 500°C for 30 minutes and 800°C for 1 hour, dissolving 50 grams of dolomite with 210 ml of HCL, then stirred at 75°C with a speed of 300 rpm until a white solution was formed, filtered the white solution, added NH3 to pH 12, filter the result then washed with distilled water until the pH was neutral and filtered again, oven the filter results at room temperature 90°C for 6 hours, calcify the product gradually at 300°C for 30 minutes, then at 500°C for 30 minutes and at 800°C for 8 hours. Mix 0.17 gram of MgO with 20 ml of distilled water, then ultrasonic for 70 minutes; after that, add 2 grams of PVA and ultrasonify again for 75 minutes, electrospinning the sample with a voltage of 20 kV, calcination of the resulting nanofiber for 2 hours at 550°C to form carbon nanofibers. This study used X-ray diffraction (XRD) characterization to determine the structure of MgO@CNFs produced by electrospinning using the Bangkalan dolomite method. © 2024 American Institute of Physics Inc.. All rights reserved.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Surabaya, Surabaya, 60231, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Surabaya, Surabaya, 60231, Indonesia
