Open AccessNovel Removal of Diazinon Pesticide by Adsorption and Photocatalytic Degradation of Visible Light-Driven Fe-TiO2/Bent-Fe Photocatalyst
Author(s) -
Nguyễn Minh Phương,
Ngoc Châu Chu,
Doan Van Thuan,
Minh Ngoc Ha,
Nguyen Thi Hanh,
Huong Do Thi Viet,
Nguyễn Thị Anh Thư,
Pham Van Quan,
Nguyen Thi Thanh Truc
Publication year - 2019
Publication title -
journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.436
H-Index - 50
eISSN - 2090-9063
pISSN - 2090-9071
DOI - 10.1155/2019/2678927
Subject(s) - photocatalysis , diazinon , point of zero charge , visible spectrum , chemistry , adsorption , nuclear chemistry , dopant , bentonite , chemical engineering , doping , materials science , pesticide , organic chemistry , catalysis , optoelectronics , agronomy , biology , engineering
In the study, Fe was used as a dopant to enhance photocatalytic activity of TiO 2 . Then, the Fe-doped TiO 2 was deposited on bentonite, which was pillared by Fe. The synthesized materials were characterized by SEM, XRD, UV-Vis, BET, and point of zero charge (pH PZC ). Then, the synthesized materials were used for diazinon removal under both dark and visible light conditions to investigate adsorption and photocatalytic degradation abilities of the synthesized materials. The maximum diazinon adsorption capacity of the synthesized Fe-TiO 2 /Bent-Fe was 27.03 mg/g. The obtained results indicated that the Fe-TiO 2 /Bent-Fe exhibited high photocatalytic degradation activity for removal of diazinon even under visible light. The diazinon removal experiments were also conducted using different photocatalyst dosages, under different pH and light sources to figure the optimal conditions for removal processes. The obtained results indicated that optimal photocatalyst dosage and pH were 0.5 g/L and 4.5, respectively. Finally, the natural light generated from solar could be suitable used for diazinon removal by the synthesized Fe-TiO 2 /Bent-Fe.