Structural, Optical and Photocatalytic Properties of Cu²⁺ Doped ZnO Nanorods with Using HMTA Solvent Prepared by Hydrothermal Method  

作　　者：Nguyen Thi Tuyet Mai Nguyen Thi Lan Trinh Xuan Anh Ta Ngoc Dung Huynh Dang Chinh Nguyen Thi Tuyet Mai;Nguyen Thi Lan;Trinh Xuan Anh;Ta Ngoc Dung;Huynh Dang Chinh(School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam)

机构地区：[1]School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam

出　　处：《Journal of Materials Science and Chemical Engineering》2023年第7期20-30,共11页材料科学与化学工程（英文）

摘　　要：In this experiment, Cu²⁺ doped ZnO (Cu-ZnO) nanorods materials have been fabricated by hydrothermal method. Cu²⁺ ions were doped into ZnO with ratios of 2, 5 and 7 mol.% (compared to the mole’s number of Zn²⁺). The hexamethylenetetramine (HMTA) solvent used for the fabrication of Cu-ZnO nanorods with the mole ratio of Zn²⁺:HMTA = 1:4. The characteristics of the materials were analyzed by techniques, such as XRD, Raman shift, SEM and UV-vis diffuse reflectance spectra (DRS). The photocatalytic properties of the materials were investigated by the decomposition of the methylene blue (MB) dye solution under ultraviolet light. The results show that the size of Cu-ZnO nanorods was reduced when the Cu²⁺ doping ratio increased from 2 mol.% to 7 mol.%. The decomposition efficiency of the MB dye solution reached 92% - 97%, corresponding to the Cu²⁺ doping ratio changed from 2 - 7 mol.% (after 40 minutes of ultraviolet irradiation). The highest efficiency for the decomposition of the MB solution was obtained at a Cu²⁺ doping ratio of 2 mol.%.In this experiment, Cu²⁺ doped ZnO (Cu-ZnO) nanorods materials have been fabricated by hydrothermal method. Cu²⁺ ions were doped into ZnO with ratios of 2, 5 and 7 mol.% (compared to the mole’s number of Zn²⁺). The hexamethylenetetramine (HMTA) solvent used for the fabrication of Cu-ZnO nanorods with the mole ratio of Zn²⁺:HMTA = 1:4. The characteristics of the materials were analyzed by techniques, such as XRD, Raman shift, SEM and UV-vis diffuse reflectance spectra (DRS). The photocatalytic properties of the materials were investigated by the decomposition of the methylene blue (MB) dye solution under ultraviolet light. The results show that the size of Cu-ZnO nanorods was reduced when the Cu²⁺ doping ratio increased from 2 mol.% to 7 mol.%. The decomposition efficiency of the MB dye solution reached 92% - 97%, corresponding to the Cu²⁺ doping ratio changed from 2 - 7 mol.% (after 40 minutes of ultraviolet irradiation). The highest efficiency for the decomposition of the MB solution was obtained at a Cu²⁺ doping ratio of 2 mol.%.

关 键 词：Cu²⁺ Doped ZnO Nanorods ZnO Nanomaterials Hexamethylenetetramine (HMTA) Photocatalytics Methylene Blue Hydrothermal Method UV Irradiation 

分 类 号：TB3[一般工业技术—材料科学与工程]