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Sustainable self-powered electro-Fenton degradation using N, S co-doped porous carbon catalyst fabricated with adsorption-pyrolysis-doping strategy
Nano Energy ( IF 17.6 ) Pub Date : 2020-11-23 , DOI: 10.1016/j.nanoen.2020.105623
Chen Chen , Yingzheng Zhu , Miao Tian , Ye Chen , Yingjie Yang , Kai Jiang , Shuyan Gao

A chief challenge of employing self-powered electro-Fenton (EF) system for drastically degrading stubborn pollutants in industrial wastewater is to develop the catalysts with high activity and selectivity in 2e oxygen reduction and the controllable output power of triboelectric nanogenerator system for collecting ambient available and renewable mechanical energy. Herein, we propose the adsorption-pyrolysis-doping strategy to tailor the content of C–S–C/S–C species and pore sizes of biomass-derived N, S-doped porous carbon catalyst from populus tomentosa to achieve the activity and selectivity of H2O2 electrosynthesis and develop a 3D printed revolving roller-compacted triboelectric nanogenerator (RRC-TENG) as an electric supply with instantaneous short circuit current of 285 μA, open circuit voltage of 500 V, transferred charge of 1.32 μC, and the optimum output power density of 3.0 W m−2, to self-power EF degradation of resistant mixed basic dyes (MB, MO and MG), whose decolorization efficiency is up to 97.8% within 45 min. This work not only realizes the controllable synthesis of high value‐added carbon catalysts via adsorption-pyrolysis-doping strategy, but also advances the EF system with a direction to develop the sustainable self-powered degradation by RRC-TENG replacing the traditional power sources, which makes for massively treating industrial wastewater with high-concentration wastes.



中文翻译:

使用吸附热解掺杂策略制备的N,S共掺杂多孔碳催化剂实现可持续的自供电Fenton降解

使用自供电的电芬顿(EF)系统用于工业废水中急剧降解顽固的污染物的主要挑战是发展与2e中高活性和选择性的催化剂-氧还原和用于收集环境摩擦纳米发生器系统的可控输出功率可用和可再生的机械能。在这里,我们提出了吸附-热解-掺杂策略,以调整毛白杨的C–S–C / S–C种类的含量和生物质衍生的N,S掺杂的多孔碳催化剂的孔径,以实现活性和选择性的H 2 O 2电合成并开发3D打印旋转式紧凑型摩擦电动纳米发电机(RRC-TENG)作为电源,其瞬时短路电流为285μA,开路电压为500 V,转移电荷为1.32μC,并且最佳输出功率密度为3.0 W m -2,可对耐性混合碱性染料(MB,MO和MG)进行自供电EF降解,其在45分钟内的脱色效率高达97.8%。这项工作不仅实现高附加值的碳催化剂的可控合成通过 吸附-热解-掺杂策略,但同时也推动了EF系统的发展,以通过RRC-TENG替代传统电源来发展可持续的自供电降解,这使高浓度废物能够大规模处理工业废水。

更新日期:2020-11-27
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