Toxic micro/nano particles removal in water via triboelectric nanogenerator

Byung Geon Park, Cheoljae Lee, Young Jun Kim, Jinhyoung Park, Hyeok Kim, Young Jung, Jong Soo Ko, Sang Woo Kim, Ju Hyuck Lee, Hanchul Cho

Research output: Contribution to journalArticlepeer-review


Herein, a new strategy for micro/nanoparticles removal in water using a triboelectric nanogenerator (TENG) is demonstrated. Removal process based on electrophoretic force can extract particles from water by its zeta potential due to the electric fields generated by the TENG, in other words, higher performance TENG removes more particles. High-performance TENG based on a three-dimensional porous-pyramid polydimethylsiloxane shows a power output nearly three times higher than that of a flat film-based TENG. With the proposed TENG, the removal rate is 21.4%, which is 5.6 times higher than that for the flat TENG (3.8%). By measuring the coverage area of the particles attached to the electrode, it was found that the removal of particles was significantly affected by the output voltage and operation time of the TENG. A TENG-driven self-powered electrophoretic system that removes sub-micron nanoparticles of polystyrene, CdSe/CdZnS, ZnO, and SiO2 is successfully demonstrated.

Original languageEnglish
Article number107433
JournalNano Energy
Publication statusPublished - 2022 Sept

Bibliographical note

Funding Information:
Sang-Woo Kim is an SKKU Distinguished Professor (SKKU Fellow) at Sungkyunkwan University (SKKU). His recent research interest is focused on triboelectric/piezoelectric nanogenerators, self-powered sensors and body-implantable devices, and 2D materials. Prof. Kim has published over 300 research papers (h-index of 80). He served as Chairman of the 4th NGPT conference at SKKU in 2018. Now he is a PI of Research Leader Program and a Director of the National Core Materials Research Center supported by National Research Foundation of Korea, and is currently serving as an Associate Editor of Nano Energy and an Executive Board Member of Advanced Electronic Materials.

Funding Information:
B.-G. Park and C. Lee contributed equally to this work. This work was supported by the National Research Foundation of South Korea (NRF) grant funded by the South Korea government ( MSIT ) [ 2019R1C1C1010730 ] and [ 2020R1C1C1007436 ]. This work was supported by the Technology Development Program ( S2987793 ) funded by the Ministry of SMEs and Startups ( MSS , South Korea).

Publisher Copyright:
© 2022

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering


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