Journal of Thermal Analysis and Calorimetry

, Volume 138, Issue 6, pp 3885–3895 | Cite as

Preparation and characterization of a novel activated carbon component via chemical activation of tea woody stem

  • Ahmet TabakEmail author
  • Kadir Sevimli
  • Mehmet Kaya
  • Bülent Çağlar


The novel activated carbon materials were synthesized by the carbonization and chemical activation of agricultural bio-waste from tea woody stems (TWS), and these materials were characterized by using FTIR, SEM, TG/DTA and surface analysis (BET surface area; pore distribution; pore size, area and volume) techniques. The higher carbonization times and amount of chemical reagent generally produce the higher surface area at 400 and 500 °C. The experimental data demonstrated that the highest BET surface area was 789 m2 g−1 at 500 °C, 75 μm particle size, TWS/KOH ratio of 1:2 and carbonization time of 3 h. The activated carbon IR spectrum showed the increases in intense of aromatic C–H out-of-plane bending and C=C vibrations and the disappearance of olefinic C=C functional groups. Thermal analysis curves of TWS are ascribed to decomposition of organic derivate corresponding to lignin, cellulose and hemicelluloses components up to 700 °C from 200 °C. The SEM images and textural analysis data signified that the pore development of carbon skeleton structure during carbonization and activation process formed and type of micropores in these pore structures was dominant.


Tea woody stem Activated carbon Chemical activation Carbonization Microporous 



The authors are grateful to the Recep Tayyip Erdoğan University for the financial and technical supports of this work and Sinop University.

Compliance with ethical standards

Conflict of interest

The authors declare that there is no conflict of interest regarding the publication of this paper.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Ahmet Tabak
    • 1
    Email author
  • Kadir Sevimli
    • 2
  • Mehmet Kaya
    • 2
  • Bülent Çağlar
    • 3
  1. 1.Department of Chemistry, Faculty of Arts and SciencesSinop UniversitySinopTurkey
  2. 2.Department of Chemistry, Faculty of Arts and SciencesRecep Tayyip Erdoğan UniversityRizeTurkey
  3. 3.Department of Chemistry, Faculty of Arts and SciencesErzincan UniversityErzincanTurkey

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