https://scholars.lib.ntu.edu.tw/handle/123456789/633006
標題: | Optimizing the Micro/Mesoporous Structure of Hierarchical Porous Carbon Synthesized from Petroleum Pitch Using the Solvent-Free Method for Ultra-Fast Capacitive Deionization | 作者: | Liu, Guan Wen Fan, Chen Shiuan Hsu, Chun Han CHIA-HUNG HOU Lin, Hong Ping |
關鍵字: | ORDERED MESOPOROUS CARBONS; ELECTROCHEMICAL PERFORMANCE; RECENT PROGRESS; GRAPHENE; ELECTRODES; TEMPLATE; REMOVAL; ELECTROSORPTION; DESALINATION; NANOTUBE | 公開日期: | 27-十二月-2022 | 出版社: | AMER CHEMICAL SOC | 卷: | 7 | 期: | 51 | 來源出版物: | ACS Omega | 摘要: | In this work, a solvent-free ZnO-Template method is used to synthesize hierarchical porous carbons (denoted as HPC-X; X = 1, 1.5, 2, and 4 g of ZnO) via the pyrolysis of petroleum industrial-residual pitch with ZnO. The proposed method allows precise control of the micro/meso/macroporous structure of the HPC by adjusting the amount of ZnO. The results show that the average pore size of HPCs prominently increases from 2.4 to 3.7 nm with the increase in the ZnO/pitch ratio. In addition, it is shown that HPCs have a high surface area between 1141 and 1469 m2g-1, a wide-range pore size distribution (micro-, meso-, and macropores), and a tap density ranging from 0.2 to 0.57 g cm-3. The capacitive deionization performances of HPCs for sodium and chloride ions are investigated. The results show that HPC-2 exhibits the highest electrosorption capacity of 9.94 mg g-1within 10.0 min and a maximum electrosorption capacity of 10.62 mg g-1at 1.2 V in a 5.0 mM NaCl solution. Hence, HPC-2 is a highly promising candidate as an electrode material for rapid deionization. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/633006 | ISSN: | 2470-1343 | DOI: | 10.1021/acsomega.2c04119 |
顯示於: | 環境工程學研究所 |
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