Sugeng Hadi Susilo, Azam Muzakhim Imanudin, Taufiq Rochman, Supriatna Adhisuwignjo
This paper discusses the impregnation of Cu atoms at carbonization temperature of water hyacinth bio carbon composite. This composite is used as an absorber of electromagnetic waves. Because the inference of electromagnetic waves can cause dam-age to other electronic equipment. In addition, electromagnetic wave radiation can cause various human health problems. The purpose of the research is to obtain a material that is able to absorb electromagnetic waves and increase electrical conductivity, impregnation of Cu atoms at carbonization temperature of water hyacinth bio carbon composite. The composite material uses a composition ratio of water hyacinth powder and phenol-formaldehyde of 30:70. The carburization temperatures used were 600 °C, 800 °C, and 1000 °C with a heat increase rate of 7 °C/minute. This study used Scanning Electron Micrograph (SEM), X-Ray Diffraction (XRD), LCR Meter, and vector network analyzer. The results show that the impregnation of Cu atoms at carbonization temperature can increase the area of the nanostructure, thereby increasing the formation of micropores in the composite. The higher the carbonization temperature, the percentage of Cu and carbon compounds can increase, while the percentage of crystal structure decreases. Impregnation of Cu atoms further strengthens the composite’s absorption of electromagnetic wave radiation. Impregnation of Cu atoms in water hyacinth bio carbon composites at carbonization temperature can increase the electrical conductivity of the composite. The results of this research have potential applications in the electronics industry, batteries, and electrical devices, and can be used to protect devices from electromagnetic interference, especially in telecommunications and the medical field. © The Author(s) 2024 This is an open access article under the Creative Commons CC BY license.
Department of Mechanical Engineering, State Polytechnic of Malang, 9 Soekarno-Hatta str., Jawa Timur, Malang, 65141, Indonesia; Department of Civil Engineering, State Polytechnic of Malang, 9 Soekarno-Hatta str., Jawa Timur, Malang, 65141, Indonesia; Department of Electrical Engineering, State Polytechnic of Malang, 9 Soekarno-Hatta str., Jawa Timur, Malang, 65141, Indonesia