Upcycling waste polyethylene terephthalate (PET) bottles into high-performance activated carbon for electrochemical desalination

被引：6

作者：

Wu, Jhen-Cih ^{[1
]}

Chang, Jui-Yao ^{[1
]}

Yuan, Xiangzhou ^{[2
,3
]}

Khan, Eakalak ^{[4
]}

Ok, Yong Sik ^{[2
]}

Hou, Chia-Hung ^{[1
,5
]}

机构：

[1] Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei

[2] Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul

[3] Ministry of Education of Key Laboratory of Energy Thermal Conversion and Control, School of Energy and Environment, Southeast University, Nanjing

[4] Department of Civil and Environmental Engineering and Construction, University of Nevada, Las Vegas, Las Vegas, 89154, NV

[5] Research Center for Future Earth, National Taiwan University, No. 1, Sec. 4. Roosevelt Rd., Taipei

来源：

Chemosphere | 2024年 / 364卷

基金：

新加坡国家研究基金会;

关键词：

Activated carbon; Capacitive deionization; Circular economy; Polyethylene terephthalate waste; Sustainable development goals 6 (SDG6) Clean water and sanitation;

D O I：

10.1016/j.chemosphere.2024.143029

中图分类号：

学科分类号：

摘要：

Upcycling waste polyethylene terephthalate (PET) bottles has attracted intensive research interests. This simultaneously alleviates plastic pollution and achieves a waste-to-resource strategy. Waste PET water bottles were used to fabricate value-added activated carbon (AC) electrodes for capacitive deionization (CDI). The KOH activation temperature (greater than 700 °C) prominently affected the physi-chemical properties and desalination performance of PET-derived activated carbons (PET-AC). Profiting from a large Brunauer–Emmet–Teller specific surface area (1448 m2 g−1) with a good mesoporous structure (the ratio of the mesopore volume to the total pore volume was 41.3%), PET-AC-1000 (activated at 1000 °C) possessed a huge specific capacitance of 108 F g−1 for capacitive ion storage. Moreover, when utilized as the electrode material in single-pass CDI, PET-AC-1000 exhibited a maximum electrosorption capacity of 10.82 ± 0.11 mg g−1 and a low level of energy consumption (0.07 kWh mol−1), associated with good electrochemical charging-discharging cyclic stability. The results provide a promising facile approach to tackle the challenge of plastic pollution and promote the advancement of electrode materials for economic affordable and energy-efficient electrochemical desalination process, which meets the United Nations (UN) sustainable development goals (SDGs). © 2024 Elsevier Ltd

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