Effect of hexamethylene tetramine (HMTA) surfactant on the structural characteristics and photocatalytic activity of Cu-ZnO nanoparticle materials fabricated by the hydrothermal method

Vietnam Journal of Catalysis and Adsorption - Tập 10 Số 3 - Trang 34-39 - 2021
Nguyen Thi Tuyet Mai1, Dang Thi Minh Hue1, Tran Thi Thu Huyen1, Nguyen Thi Lan1, Nguyen Kim Nga1, Trinh Xuan Anh1, Ta Ngoc Dung1, Huynh Dang Chinh1, Nguyen Cong Tu2, Luu Thi Lan Anh2
1School of Chemical Engineering, Hanoi University of Science and Technology, Vietnam
2School of Engineering Physics, Hanoi University of Science and Technology, Vietnam

Tóm tắt

The experiment had fabricated and studied the properties of ZnO and Cu doped ZnO nanoparticles with the change of the hexamethylene tetramine surfactant content (HMTA) with molar ratio Zn2 +: HMTA = 1: x; x = 1, 2 and 4. The methods were used to study the characteristics of materials such as: XRD, raman shift, SEM, reflection spectrum. The results show that, when the content of surfactant HMTA increased (1-4 mol versus the moles of Zn2+), the size of the nanorods crystals of fabricated materials had reduced from 64.5 to 21.7 nm. The reflectance spectrum of Cu doped ZnO materials samples was lower in the visible light region compared to pure ZnO samples. The photocatalytic properties for decomposition of methylene blue organic dye of the Cu doped ZnO sample (with the greatest concentration of HMTA surfactant of 4 mol versus the moles of Zn2+) reached 98% after 40 minutes of ultraviolet light irradiation, with the rate constant k= 0,13261 min-1. 

Từ khóa

#ZnO nanomaterials #Cu doped ZnO #photocatalysts #HMTA #ultraviolet irradiation

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Thông tin xuất bản

Vietnam Journal of Catalysis and Adsorption

Tập 10 Số 3

34-39

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