Synthesis, characterization and photocatalytic application of CNTs/ZnO composite

Quyen Nguyen Duc Vu, Tuyen Tran Ngoc, Tin Dang Xuan, Hai Ho Van Minh, Diem Bui Thi Hoang, Do Dang, Dung Ho Thi Thuy

Abstract


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.


Keywords


CNTs/ZnO; photocatalytic

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References


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DOI: https://doi.org/10.51316/jca.2020.053

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