Lead-free sodium niobate nanowires with strong piezo-catalysis for dye wastewater degradation

By Shensong Wang, Zheng Wu, Jie Chen, Jiangping Ma, Jingshi Ying, Shoucheng Cui, Shigang Yu, Yongming Hu, Jinhe Zhao, Yanmin Jia. Ceramics International, 2019

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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.

Subfields: Electrical and Electronic Engineering, Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/d5630ee4dabab55ee0ba1320132dbab3cebd75f7