Open AccessSynthesis, characterization and photocatalytic application of CNTs/ZnO composite
Author(s) -
Quyen Nguyen Duc Vu,
Tuyen Tran Ngoc,
Tin Dang Xuan,
Hai Ho Van Minh,
Diem Bui Thi Hoang,
Do Dang,
Dung Ho Thi Thuy
Publication year - 2020
Publication title -
xúc tác và hấp phụ
Language(s) - English
Resource type - Journals
ISSN - 0866-7411
DOI - 10.51316/jca.2020.053
Subject(s) - photocatalysis , composite number , oxalic acid , methylene blue , materials science , aqueous solution , chemical engineering , catalysis , diffuse reflectance infrared fourier transform , decomposition , nuclear chemistry , inorganic chemistry , chemistry , composite material , organic chemistry , engineering
In the present study, CNTs/ZnO composite is prepared via ultrasonic method, in which, ZnO is synthesized by precipitating Zn(CH3COO)2 in oxalic acid. The obtained composite is characterized by modern physico-chemical methods. The band gap of CNTs/ZnO (Eg) is determined from diffuse reflectance spectroscopy (DRS). The CNTs/ZnO composite is employed as an active photocatalyst for the decomposition of methylene blue (MB) from aqueous solution at solution pH of 6 and catalyst dosage of 0.3 g.L-1. The Langmuir-Hinshelwood kinetic model well describes photocatalytic kinetic of the reaction.