Synthesis and characterization of metallic 1T-VS2 adsorbents for methylene blue removal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, cilt.14, sa.6, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 14 Sayı: 6
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.jece.2026.125106
- Dergi Adı: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Compendex, INSPEC
- Anahtar Kelimeler: 1T-VS2, 2D materials, Adsorption mechanism, Dark adsorption, Methylene blue, Reusability
- Eskişehir Osmangazi Üniversitesi Adresli: Evet
Özet
This study presents a comprehensive evaluation of methylene blue (MB) removal using hydrothermally synthesized 1 T metallic VS2 adsorbents. Among samples synthesized at 120-200 degrees C, VS2-200 exhibited optimal structural purity, a BET surface area of 10.97 m2 g- 1, high MB removal efficiencies (95-100%), and a maximum monolayer adsorption capacity (qmax) of 53.19 mg g- 1. Equilibrium data were fitted to Langmuir, Freundlich, and Temkin models, while kinetics were best described by the pseudo-second-order model alongside intraparticle diffusion. For VS2-200, adsorption was enhanced under alkaline conditions via electrostatic attraction. Furthermore, VS2-200 maintained stability across varying ionic strengths, retained over 90% capacity after regeneration, and demonstrated high cationic selectivity in binary dye (MB/ Methyl Orange, MO) tests. In conclusion, metallic 1T-VS2-200 exhibits promising features as an energy-free, dark-active adsorbent for potential utilization in water decontamination processes.