High surface area mesoporous carbon from black cumin (Nigella sativa) processing industry solid residues via single-stage K2CO3 assisted carbonization method: Production optimization, characterization and its some water pollutants removal and supercapacitor performance

Teymur Y. A., Güzel F., GÜRTEN İNAL İ. I.

Diamond and Related Materials, cilt.135, 2023 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 135
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.diamond.2023.109815
  • Dergi Adı: Diamond and Related Materials
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Activated carbon, Black cumin, Characterization, Sorption, Supercapacitor
  • Ankara Üniversitesi Adresli: Evet

Özet

In this study, solid residues (BR) from the black cumin (Nigella sativa) processing industry, an abundant and sustainable raw material, were converted into high surface area mesoporous activated carbon (AC) under optimum production conditions using a single-stage K2CO3 assisted carbonization method. The optimal AC (BRAC) which had the highest BET surface area (2211 m2/g), total pore volume (1.262 cm3/g), and mean pore diameter (2.8 nm) was achieved in the conditions of a K2CO3 impregnation ratio of 1:1, a carbonization temperature of 900 °C, and a carbonization period of 1 h. To test its adsorption performance from the aqueous phase, methylene blue dye, oxytetracycline antibiotic, and lead metal ions were selected as model water pollutants and found to be 714.3, 833.3, and 500.0 mg/g, respectively, at 25 °C Also, the electrode made of BRAC showed electrochemical capacitor performance with a high gravimetric capacitance (210 F/g) and cyclic stability (95 %).