A curtain purification system based on a rabbit fur-based rotating triboelectric nanogenerator for efficient photocatalytic degradation of volatile organic compounds

Dehong Yang; Zhaoqi Liu; Peng Yang; Ling Huang; Fengjiao Huang; Xinglin Tao; Yuxiang Shi; Rui Lei; Jiazhen Cao; Hexing Li; Xiangyu Chen; Zhenfeng Bian

doi:10.1039/D3NR00507K

A curtain purification system based on a rabbit fur-based rotating triboelectric nanogenerator for efficient photocatalytic degradation of volatile organic compounds†

Dehong Yang,‡^a Zhaoqi Liu,‡^bc Peng Yang,^bc Ling Huang,^a Fengjiao Huang,^a Xinglin Tao,^bc Yuxiang Shi,^bc Rui Lei,^b Jiazhen Cao,^d Hexing Li,

^ae Xiangyu Chen

*^bc and Zhenfeng Bian

*^a

Author affiliations

* Corresponding authors

^a MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
E-mail: bianzhenfeng@shnu.edu.cn

^b 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, China
E-mail: chenxiangyu@binn.cas.cn

^c College of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China

^d Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China

^e Shanghai University of Electric Power, Shanghai 200090, China

Abstract

Efficient removal of air pollution caused by volatile organic compounds (VOCs) and particulate matter (PM) through distributed energy collected from the environment is an effective strategy to achieve both energy conservation and better air quality. Herein, a curtain purification system based on a rabbit fur-based rotary triboelectric nanogenerator (RR-TENG) and a collaborative photocatalysis technology was designed for indoor air purification. The high electrostatic field from RR-TENG enhances formaldehyde adsorption, while it can also efficiently adsorb PM_2.5 simultaneously. More interestingly, the ultrahigh electric field provided by RR-TENG promotes the separation of photogenerated electron–hole pairs of the g-C₃N₄/TiO₂ composite photocatalyst, generating more superoxide radicals (⋅O₂⁻), hydroxyl radicals (⋅OH), and holes (h⁺) and thereby improving the photocatalytic efficiency. In a simulated reaction chamber of 9 L, the formaldehyde removal rate of the system can reach 79.2% within 90 min and RR-TENG rapidly reduces PM_2.5 from 999 μg m⁻³ to 50 μg m⁻³ within 60 s. This study proposes a curtain purification system integrating the function of energy collection and photocatalytic purification, which can be applied for improving air quality and human health.

This article is part of the themed collections: Nanoscale and Nanoscale Horizons: Nanodevices and Celebrating 25 years of the Key Laboratory for Special Functional Materials at Henan University

Nanoscale

A curtain purification system based on a rabbit fur-based rotating triboelectric nanogenerator for efficient photocatalytic degradation of volatile organic compounds†

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A curtain purification system based on a rabbit fur-based rotating triboelectric nanogenerator for efficient photocatalytic degradation of volatile organic compounds

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