Upcycling Waste Polyethylene Terephthalate to Produce Nitrogen-Doped Porous Carbon for Enhanced Capacitive Deionization
文献类型： 外文期刊
第一作者： Yu, Hui
作者： Yu, Hui;Zhu, Weihua;Duan, Haiyan;Duan, Haiyan;Chen, Liang;Zhang, Dengsong;Baranowska, Daria;Hua, Yumeng;Chen, Xuecheng
作者机构：
关键词： PET; MOF; N-PC; CDI
期刊名称：MOLECULES （ 影响因子：4.6； 五年影响因子：5.0 ）
ISSN：
年卷期： 2024 年 29 卷 20 期
页码：
收录情况： SCI
摘要： Porous carbon with a high surface area and controllable pore size is needed for energy storage. It is still a significant challenge to produce porous carbon in an economical way. Nitrogen-doped porous carbon (N-PC) was prepared through carbonization of a mixture of waste PET-derived metal-organic frameworks (MOFs) and ammonium. The obtained N-PC exhibits a large surface area and controlled pore size. When utilized as an electrode material for supercapacitors, the N-PC exhibits a specific capacitance of 224 F g-1, significantly surpassing that of commercial activated carbon (AC), which has a capacitance of 111 F g-1. In the subsequent capacitive deionization (CDI) tests, the N-PC demonstrated a maximum salt adsorption capacity of 19.9 mg g-1 at 1.2 V in a NaCl electrolyte (0.5 g L-1), and the salt adsorption capacity increased to 24.7 mg g-1 at 1.4 V. The N-PC electrode also exhibited superior regeneration. The present work not only presents a potential approach to develop cost-effective electrodes for seawater purification but also paves the way for recycling of waste plastics into high value-added products.
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