Green Synthesis of Co-alginate and CoNi-chitosan Catalysts for Catalytic Reduction of Organic Azo Dyes
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Tarih
2025
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
SLOVENSKO KEMIJSKO DRUSTVO
Erişim Hakkı
Özet
Cobalt and nickel doped catalysts were synthesized by using chitosan and alginate and used in the degradation of Remazol Yellow 4GL (RY) and Remazol Black B (RB) dyes. XRD pattern of catalysts exhibited that amorphous and semi-crystalline form for CoNi-chitosan and Co-alginate, respectively. SEM images showed catalyst's surface was rough, grainy and rod-like structures. The surface functional groups were determined by FTIR analysis method and it was seen clearly presence of alginate and chitosan. The Co-alginate catalysts exhibited higher dye degradation (74% for RY) and lower reaction time (6 min for RB). The reduction reaction was in good agreement with pseudo-first-order kinetic model and reaction rate constant was determined as 0.140 min-1 and 0.174 min-1 for RY and RB, respectively. The RY reduction percent over both catalysts was higher than RB. Co-alginate showed approximately 70% reduction efficiency for RY even after 4 runs. The dye reduction efficiency and catalytic activity of the catalysts were promise for organic pollutant dyes catalytic reduction applications.
Açıklama
Anahtar Kelimeler
Remazol Yellow 4GL, Remazol Black B, cobalt/nickel bead catalyst, catalytic reduction
Kaynak
ACTA CHIM SLOV
WoS Q Değeri
Scopus Q Değeri
Cilt
72
Sayı
3
