Growth mechanism and photocatalytic evaluation of flower-like ZnO microstructures prepared with SDBS assistance
来源期刊：International Journal of Minerals Metallurgy and Materials2021年第4期
论文作者：Hong-mei Shao Xiao-yi Shen Xue-tian Li Yong Cui Wei Zhang Wen-di Xu Zhong-cai Shao Yu-chun Zhai
摘 要：Flower-like ZnO microstructures were successfully produced using a hydrothermal method employing ZnSO4/（NH4）2SO4 as a raw material.The effect of the operating parameters of the hydrothermal temperature, OH-/Zn2+ molar ratio, time, and amount of dispersant on the phase structure and micromorphology of the ZnO particles were investigated.The synthesis conditions of the flower-like ZnO microstructures were: hydrothermal temperature of 160℃, OH-/Zn2+ molar ratio of 5:1, reaction time of 4 h, and 4 mL of dispersant.The flower-like ZnO microstructures were comprised of hexagon-shaped ZnO rods arranged in a radiatively.Degradation experiments of Rhodamine B with the flower-like ZnO microstructures demonstrated a degradation efficiency of 97.6% after 4 h of exposure to sunshine, indicating excellent photocatalytic capacity.The growth mechanism of the flower-like ZnO microstructures was presented.
Hong-mei Shao1，Xiao-yi Shen2，Xue-tian Li1，Yong Cui1，Wei Zhang1，Wen-di Xu1，Zhong-cai Shao1，Yu-chun Zhai2
1. School of Environmental and Chemical Engineering, Shenyang Ligong University2. School of Metallurgy, Northeastern University
摘 要：Flower-like ZnO microstructures were successfully produced using a hydrothermal method employing ZnSO4/（NH4）2SO4 as a raw material.The effect of the operating parameters of the hydrothermal temperature, OH-/Zn2+ molar ratio, time, and amount of dispersant on the phase structure and micromorphology of the ZnO particles were investigated.The synthesis conditions of the flower-like ZnO microstructures were: hydrothermal temperature of 160℃, OH-/Zn2+ molar ratio of 5:1, reaction time of 4 h, and 4 mL of dispersant.The flower-like ZnO microstructures were comprised of hexagon-shaped ZnO rods arranged in a radiatively.Degradation experiments of Rhodamine B with the flower-like ZnO microstructures demonstrated a degradation efficiency of 97.6% after 4 h of exposure to sunshine, indicating excellent photocatalytic capacity.The growth mechanism of the flower-like ZnO microstructures was presented.
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