Investigation of boron adsorption by graphene oxide: equilibrium, kinetic, and thermodynamic studies

Creative Commons License

Önen M. F., Erdöl Aydın N., Eksik O., Demirçivi P., Saygili G.

Turkish Journal of Chemistry, cilt.47, sa.3, ss.656-666, 2023 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 47 Sayı: 3
  • Basım Tarihi: 2023
  • Doi Numarası: 10.55730/1300-0527.3568
  • Dergi Adı: Turkish Journal of Chemistry
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.656-666
  • Anahtar Kelimeler: adsorption, boron, Graphene oxide, wastewater
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Graphene oxide, which has a great application in industry, is one of the promising carbonous materials. Modified Hummers method was applied to synthesize graphene oxide. Characterization techniques showed that pure graphene oxide was successfully obtained. Its adsorptive properties were investigated by boron adsorption. The results were demonstrated that boron adsorption on graphene oxide was a pH-dependent process and maximum adsorption was achieved at pH 6 (0.98 mg g–1). Langmuir adsorption capacity was calculated as 3.92 mg g–1 with R2= 0.99. The kinetic data brought to light that pseudosecond-order kinetic model was well described the experimental data (R2= 0.99), and according to thermodynamic parameters, boron adsorption has spontaneous and endothermic nature (ΔHo=15.47 kJ mol–1).