废水
四氟乙烯
材料科学
催化作用
化学工程
降级(电信)
环境友好型
制浆造纸工业
复合材料
化学
环境工程
环境科学
有机化学
聚合物
计算机科学
工程类
共聚物
生物
电信
生态学
作者
Shuang Zhang,Haimiao Yu,Xiaoting Zhu,Xiancheng Sang,Yanqiang Li,Jie Fu,Qiang Li,Yongcheng Zhang,Wanneng Ye
出处
期刊:ACS applied polymer materials
[American Chemical Society]
日期:2023-04-19
卷期号:5 (5): 3585-3594
被引量:5
标识
DOI:10.1021/acsapm.3c00243
摘要
Piezocatalysis is an emerging and promising catalytic technique for degrading organic pollutants by harvesting mechanical energy. However, the catalytic efficiency and environment compatibility of present piezocatalysts are still unsatisfactory. Here, the superior piezocatalytic performance of eco-friendly poly(tetrafluoroethylene) (PTFE) micron powders was demonstrated by degrading several typical dyes. Methylene blue can be degraded by 99% within 20 min (k = 0.246 min–1) using fresh PTFE under ultrasonic vibration, and PTFE exhibits excellent stability and reusability. In addition, rhodamine B, acid orange 7, and methyl orange can also be degraded by 100, 98, and 99% within 60 min, respectively, demonstrating the wide adaptability of PTFE. Catalytic mechanism investigations demonstrate that •OH and •O2– play major roles in dye degradation. Furthermore, the influence of various water sources and different containers on the catalytic performances of PTFE was explored, indicating that PTFE has nice environmental suitability and that the glass container facilitates catalytic degradation. Therefore, a designed glass spiral tube was applied for large-volume wastewater purification, which can be further extended for potential applications. This work thus demonstrates that PTFE can be regarded as a promising catalyst for wastewater treatment by harvesting mechanical energy, and the proposed Z-shaped wastewater degradation device has potential applications in wastewater treatment.
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