Affiliation:
1. Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education and State Key Laboratory for Mechanical Behavior of Materials School of Electronic and Information Engineering Xi'an Jiaotong University Xi'an 710049 China
2. The Fifth Affiliated Hospital of Jinan University Heyuan 517000 China
3. Center for Spintronics and Quantum Systems State Key Laboratory for Mechanical Behavior of Materials Department of Materials Science and Engineering Xi'an Jiaotong University Xi'an 710049 China
Abstract
AbstractPiezocatalysis has increasingly gained prominence due to its enormous potential for addressing energy shortages and environmental pollution issues. Nonetheless, the low piezocatalytic activity of state‐of‐the‐art materials seriously inhibits the practical applications of piezocatalysis. Here, it is proposed to greatly enhance the piezocatalytic activity for a perovskite ferroelectric, i.e., Sm‐doped 0.68Pb(Mg1/3Nb2/3)‐0.32PbTiO3 (Sm‐PMN‐PT, a solid solution with ultrahigh piezoelectricity), by introducing oxygen vacancies (OVs). The results show that the presence of OVs promotes the production of reactive oxygen species while enhancing the adsorption and activation of organic pollutants to improve piezocatalytic performance. The OV‐Sm‐PMN‐PT is found to possess a superior piezocatalytic degradation rate constant of 0.073 min−1 under ultrasonic vibration, which is ≈4.9 times higher than that of pristine Sm‐PMN‐PT. Furthermore, the OV‐Sm‐PMN‐PT can efficiently remove RhB under 400 rpm stirring, making it a promising candidate for water purification using low‐frequency mechanical energy from nature. This research sheds light on the design of piezocatalytic materials via defect engineering.
Funder
National Natural Science Foundation of China
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献