Issue

Vol. 13 (2021)

High-Efficiency Wastewater Purification System Based on Coupled Photoelectric–Catalytic Action Provided by Triboelectric Nanogenerator

https://doi.org/10.1007/s40820-021-00695-3
Shen Shen
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Jiajia Fu
Jiangsu Engineering Technology Research Centre for Functional Textiles, Jiangnan University, No.1800 Lihu Avenue, Wuxi, People’s Republic of China
Jia Yi
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Liyun Ma
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Feifan Sheng
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Chengyu Li
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Tingting Wang
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Chuan Ning
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Hongbo Wang
Jiangsu Engineering Technology Research Centre for Functional Textiles, Jiangnan University, No.1800 Lihu Avenue, Wuxi, People’s Republic of China
Kai Dong
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Zhong Lin Wang
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China

Corresponding Author: Zhong Lin Wang

zhong.wang@mse.gatech.edu

Nano-Micro Letters, Vol. 13 (2021), Article Number: 194

Abstract

It is of great importance to explore a creative route to improve the degradation efficiency of organic pollutants in wastewater. Herein, we construct a unique hybrid system by combining self-powered triboelectric nanogenerator (TENG) with carbon dots-TiO2 sheets doped three-dimensional graphene oxide photocatalyst (3DGA@CDs-TNs), which can significantly enhance the degradation efficiency of brilliant green (BG) and direct blue 5B (DB) owing to the powerful interaction of TENG and 3DGA@CDs-TNs photocatalyst. The power output of TENG can be applied for wastewater purification directly, which exhibits a self-powered electrocatalytic technology. Furthermore, the results also verify that TENG can replace conventional electric catalyst to remove pollutants effectively from wastewater without any consumption. Subsequently, the unstable fragments and the plausible removal pathways of the two pollutants are proposed. Our work sheds light on the development of efficient and sustainable TENG/photocatalyst system, opening up new opportunities and possibilities for comprehensive utilization of random energy.


Highlights:


1 Triboelectric nanogenerator (TENG)/carbon dots-TNs supported over three-dimensional graphene aerogel (3DGA@CDs-TNs) system was constructed.
2 TENG and 3DGA@CDs-TNs present excellent degradation activity toward brilliant green (88.26%, 40 min) and direct blue 5B (89.6%, 90 min).
3 The coupling interaction of photocatalysis and TENG leads to an enhanced removal ability.
4 The degradation pathways for brilliant green and direct blue 5B are proposed.

Keywords

Triboelectric nanogenerators Self-powered 3DGA@CDs-TNs photocatalyst Hybrid system Wastewater purification
Shen, Shen, Jiajia Fu, Jia Yi, Liyun Ma, Feifan Sheng, Chengyu Li, Tingting Wang, Chuan Ning, Hongbo Wang, Kai Dong, and Zhong Lin Wang. 2021. “High-Efficiency Wastewater Purification System Based on Coupled Photoelectric–Catalytic Action Provided by Triboelectric Nanogenerator”. Nano-Micro Letters 13 (September):194. https://doi.org/10.1007/s40820-021-00695-3.
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