التفاصيل البيبلوغرافية
| العنوان: |
Preparation and characterization of porous carbon-based oil palm empty fruit bunch as a candidate material for an electromagnetic waves absorber application. |
| المؤلفون: |
Chitraningrum, Nidya, Marlina, Resti, Sutistyaningsih, Arisesa, Hana, Budiman, Ismail, Daud, Pamungkas, Septiani, Ardita, Arundina, Ria Yolanda, Togatorop, Ester Rimma Suryani |
| المصدر: |
AIP Conference Proceedings; 2024, Vol. 2973 Issue 1, p1-10, 10p |
| مصطلحات موضوعية: |
ELECTROMAGNETIC wave absorption, ELECTROMAGNETIC waves, OIL palm, CARBONIZATION, HYDROTHERMAL carbonization, CARBON-based materials, PETROLEUM waste |
| مستخلص: |
An absorber with lightweight, low-cost, high absorption and broad frequency bandwidth is highly expected to design an electromagnetic wave absorber application. In this paper, the carbon materials based agricultural waste from oil palm empty fruit bunch (OPEFB) were studied to investigate the electromagnetic wave, especially the microwave absorption properties within the range from 8 to 12 GHz (X-band). The carbon-based OPEFB is prepared by hydrothermal carbonization (at 180 oC for 8 hours) followed by chemical (using KOH activating agent) and physical (at 800 oC for 2 hours) of carbonization processes. We studied the microwave absorption properties of the porous carbon-based OPEFB with 20 % of KOH concentration. A vector network analyzer (VNA) takes the microwave absorption properties within the X-band frequency range. The results indicate the ability to absorb electromagnetic waves in all X-band frequencies for porous activated carbon-based OPEFB samples. The reflection loss is reach -32.21 dB at 10.64 GHz. The enhancement of EM wave absorption in activated carbon-based OPEFB compared to that of raw OPEFB material is correlated to the formation of porous stracture inducing the multiple reflection to enhance the interfacial polarization of EM wave. This research show that the porous carbon-based OPEFB can be a promising candidate for a lightweight, green, and renewable of electromagnetic waves absorber in the future. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
