| Fabrication of Porous Carbon Layers on Polycarbonate Using a CO₂ Laser with Chitosan as a Carbon Precursor |
| کد مقاله : 1307-ICOC |
| نویسندگان |
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مریم خانی نور *، بابک ژاله، فاطمه کریمی گروه فیزیک-دانشکده علوم پایه-دانشگاه بوعلی سینا-همدان-ایران |
| چکیده مقاله |
| In recent years, carbon quantum dots, graphene, graphene oxide, and carbon structures have attracted attention as key materials in electronics, sensors, and photocatalytic catalysis due to their properties such as high conductivity and surface area. Conventional methods for synthesizing these materials often require complex conditions, toxic chemicals, or lengthy processes, which limits their use [1]. The use of CO2 lasers, excimer lasers, and other lasers with the LIG (Laser-Induced Graphene) method is a fast and green solution for producing carbon layers on various substrates. [2].This method is cost-effective, one-step, does not require chemicals or complex conditions, and is also a method for large-scale carbon production. However, the adhesion and stability of the carbon layers formed on the substrates need to be improved. For this reason, in this study, chitosan is used as a carbon precursor that has good adhesion on the polycarbonate substrate to make high-quality carbon layers usable in various applications. To prepare the chitosan solution, 0.3 g of chitosan was mixed with 30 ml of water and 2.5 cc of acetic acid. A volume of 1.5 ml of the resulting solution was then applied to the polycarbonate substrate surface by a dropwise method until a uniform layer was formed. A CO₂ laser device operating at a wavelength of 10.6 microns and a maximum power of 125 was used to irradiate the samples at various power levels. The samples exposed to a power of 20 W exhibited a more uniform carbon layer on the substrate surface. The sample is transparent after a chitosan coating, and after an irradiation process it turns into a black layer on the polycarbonate substrate. The presence of a porous carbon layer was confirmed by FESEM and Raman spectroscopy. Based on these findings, the resulting carbon layers appear suitable for applications in electrochemical devices and supercapacitors. |
| کلیدواژه ها |
| Chitosan, polycarbonate, CO2 laser, LIG |
| وضعیت: پذیرفته شده |