期刊
ACS NANO
卷 15, 期 3, 页码 5478-5485出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.1c00233
关键词
triboelectric nanogenerator; self-powered system; pulsed direct-current; electro-Fenton; levofloxacin
类别
资金
- National Key R&D Project from Minister of Science and Technology [2016YFA0202704]
- National Natural Science Foundation of China [61774016, 21773009, 51432005, 5151101243, 51561145021]
- Beijing Municipal Science & Technology Commission [Z171100000317001, Z171100002017017, Y3993113DF]
This study introduces a R-TENG with FW-PDC output to enhance the removal efficiency of OFL in a self-powered electro-Fenton system. By adjusting the rotation center angle ratio, the phase superposition of R-TENG can be effectively eliminated to achieve the desired FW-PDC output and improve the removal efficiency of OFL.
With the excellent structural design, rotary triboelectric nanogenerator (R-TENG) is suitable for harvesting mechanical energy such as wind energy and water energy to build a self-powered electrochemical system for environmental science. The electrochemical performance has been greatly improved by using the pulsed direct-current (PDC) output of a TENG; however, a full-wave PDC (FW-PDC) is hardly realized in R-TENG devices due to existence of phase superposition. Here, a R-TENG with FW-PDC output is reported to perform a self-powered electro-Fenton system for enhancing the removal efficiency of levofloxacin (OFL). By adjusting the rotation center angle ratio between each rotator and stator unit, the phase superposition of R-TENG caused by multiple parallel electrodes can be effectively eliminated, thus achieving the desired FW-PDC output. Because of the reduced electrode passivation effect, the removal efficiency of OFL is improved by 30% under equal electric charges through using the designed R-TENG with FW-PDC output compared to traditional R-TENG. This study provides a promising methodology to improve the performance of self-powered electrochemical process for treating environment pollutions.
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