Han Kai, Luo Jianjun, Feng Yawei, Lai Qingsong, Bai Yu, Tang Wei, Wang Zhong Lin
CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People's Republic of China.
School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
ACS Nano. 2020 Mar 24;14(3):2751-2759. doi: 10.1021/acsnano.9b08496. Epub 2020 Feb 14.
As one of the major air pollutants, NO is rather challenging to remove. The main treatment method is catalytic reduction with plenty of reducing agents, which lacks any effective control in an open air environment such as urban spaces. It is necessary to seek a self-powered electrochemical process for environmental treatment. The triboelectric nanogenerator (TENG), a developing technology with various advantages, is widely used in energy and environmental monitoring and cleaning. In this work, a radial-engine-shaped TENG system with five stacked TENGs is designed to synchronously absorb NO and degrade its main enrichment forms of nitrate and nitrite in aqueous solution. In addition, the system possesses inherent phase differences and outputs continuous direct current after rectification. Moreover, we demonstrated that, driven by artificial wind at a speed of 6 m/s, the NO generated by a chemical method was effectively degraded by the radial-engine-shaped TENG system.
作为主要空气污染物之一，一氧化氮（NO）的去除颇具挑战性。主要处理方法是使用大量还原剂进行催化还原，但在城市空间等露天环境中缺乏有效的控制手段。有必要寻求一种用于环境处理的自供电电化学过程。摩擦纳米发电机（TENG）作为一种具有多种优势的新兴技术，被广泛应用于能源以及环境监测与净化领域。在这项工作中，设计了一种由五个堆叠的TENG组成的径向发动机形状的TENG系统，用于同步吸收NO并降解其在水溶液中的主要富集形式硝酸盐和亚硝酸盐。此外，该系统具有固有的相位差，整流后输出连续直流电。而且，我们证明了，在6米/秒的人工风驱动下，径向发动机形状的TENG系统能有效降解化学方法产生的NO。
