Open AccessVisible Light Photocatalytic Degradation of Sunset Yellow Dye and Industrial Textile Wastewater Using Pd-BiFeO3 Composite
Author(s) -
Zeeshan Haider Jaffari,
Sze–Mun Lam,
Dorbin Ng,
Jin–Chung Sin
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/835/1/012001
Subject(s) - photocatalysis , wastewater , degradation (telecommunications) , composite number , textile , industrial wastewater treatment , visible spectrum , materials science , pulp and paper industry , sunset , photochemistry , waste management , chemical engineering , chemistry , environmental science , catalysis , composite material , environmental engineering , optoelectronics , optics , organic chemistry , engineering , physics , telecommunications
Herein, pristine BiFeO 3 and Pd-incorporated BiFeO 3 (Pd-BiFeO 3 ) composite were synthesized using hydrothermal synthesis method. The physiochemical and optical properties of the synthesized materials were investigated using numerous techniques. The Pd-BiFeO 3 composite significantly enhanced the photocatalytic degradation of sunset yellow (SSY) dye in comparison with the pristine BiFeO 3 under visible light irradiation. The enhanced photoactivity was credited to the improved photogenerated charge carrier separation, which was in accordance with the photoelectrochemical measurements. Moreover, the Pd-BiFeO 3 composite can be recycled for seven consecutive runs without sufficient loss of photocatalytic activity. Radical trapping studies suggested that the hydroxyl radical (•OH), hydrogen peroxide (H 2 O 2 ) and hole ( h+ ) were the key reactive oxidizing species. A possible photocatalytic enhancement mechanism of Pd-BiFeO 3 composite was stated. Finally, for the first time, the Pd-BiFeO 3 composite was also applied towards the effective degradation of industrial textile wastewater.