Open AccessSynthesis, characterization and photocatalytic application of CNTs/ZnO composite
Author(s) -
Nguyễn Đức Vũ Quyên,
Trần Ngọc Tuyền,
Đặng Xuân Tín,
Hồ Văn Minh Hải,
Bùi Thị Hoàng Diễm,
Dang Van Do,
Ho Thi Thuy Dung
Publication year - 2020
Publication title -
vietnam journal of catalysis and adsorption
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 , catalysis , decomposition , chemical engineering , diffuse reflectance infrared fourier transform , 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.
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