Facile synthesis of Ni-ZIF-8 with improved photodegradation performance for methylene blue
Liyana Labiba Zulfa, Alvin Romadhoni Putra Hidayat, Wahyu Prasetyo Utomo, Riki Subagyo, Etty Nurlia Kusumawati, Yuly Kusumawati, Djoko Hartanto, Widyastuti Widyastuti, Ratna Ediati
Abstract
A series of bimetallic metal-organic frameworks (MOFs) photocatalysts had been successfully synthesized by doping nickel (Ni) into zeolitic imidazolate framework-8 (ZIF-8) for enhanced photodegradation of methylene blue (MB). Optical characterization revealed that the Ni-ZIF-8 composites possessed a narrower bandgap and lower recombination rate of charge carriers than pristine ZIF-8. The Ni(20)-ZIF-8 composite showed the highest MB photodegradation efficiency of up to 93.22 % in 150 min, with the use of 30 mg photocatalyst, 50 mL of 30 mg/L MB solution, and a neutral pH. The scavenger test clearly proved that h+ and •OH were the main active species.