Lead-free sodium niobate nanowires with strong piezo-catalysis for dye wastewater degradation |
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| Authors: | Shensong Wang Zheng Wu Jie Chen Jiangping Ma Jingshi Ying Shouchen Cui Shigang Yu Yongming Hu Jinhe Zhao Yanmin Jia |
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| Affiliation: | 1. Hubei Key Laboratory of Ferro- & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Science, Hubei University, Wuhan, 430062, China;2. College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, 321004, China;3. Department of Physics, Zhejiang Normal University, Jinhua, 321004, China;4. Jinhua Shuntong Environmental Constrcution Co. Ltd., Jinhua, 321000, China;5. Xingzhi College, Zhejiang Normal University, Jinhua, 321004, China |
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| Abstract: | In this work, the hydrothermally-synthesized sodium niobate nanowires were used to decompose Rhodamine B dye solution through the piezo-catalytic effect. With the sodium niobate catalyst, a high piezo-catalytic degradation ratio of ～80% was achieved under the excitation of vibration for the Rhodamine B dye solution (～5?mg/l). These active species in the catalytic process, hydroxyl radicals and superoxide radicals with the strong oxidation ability, were also observed, which confirmed the key role of piezoelectric effect for piezo-catalysis. The piezo-catalysis of sodium niobate nanowires provides a high-efficiency and reusable tool in application in depredating the dye wastewater. |
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| Keywords: | Piezoelectric effect Sodium niobate nanowires Piezo-catalysis Hydroxyl radicals Dye degradation |
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