期刊
CHEMOSPHERE
卷 291, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2021.133113
关键词
Biobased polyporphyrin; Porous carbon; Nitrogen doping; Capacitive deionization; Electrosorption
资金
- National Natural Science Foundation of China [51508153]
- Fundamental Research Funds for the Central Universities [B200202107]
- Priority Academic Program Development of Jiangsu Higher Education Institutions [BK20150813]
In this study, nitrogen-doped polyporphyrin derived porous carbons (NPPCs) were prepared by a one-pot reaction from biobased furan derivative, followed by activation, for efficient capacitive deionization. The NPPCs exhibited cross-linked interconnected nanosphere chain-like structures and a rich pore structure, resulting in high specific surface area and large pore volume. The electrochemical measurements showed good conductivity, outstanding stability, and extraordinary specific capacitance of NPPCs. The NPPC-800 electrodes demonstrated high salt adsorption capacity and outstanding cycling stability in desalination tests, indicating the potential of biobased porous carbon material in CDI technique.
Recently, capacitive deionization (CDI) has attracted considerable interest as a potential desalination technique for seawater. It is thus desirable to develop low-cost, sustainable, and efficient electrode materials for desalination. In this study, the polyporphyrin was prepared by a one-pot reaction from biobased furan derivative, followed by activation to manufacture nitrogen-doped polyporphyrin derived porous carbons (NPPCs) for efficient capacitive deionization. In the presence of KOH as a pore activator, NPPCs exhibited cross-linked interconnected nanosphere chain-like structures inherited from the polyporphyrin backbone with coexisting mesopores and micropores, leading to extremely high specific surface area (2979.3 m(2) g(-1)) and large pore volume (2.22 cm(3) g(-1)). The electrochemical measurements revealed good conductivity, outstanding stability, and extraordinary specific capacitance (328.7 F g(-1)) of NPPCs, which can be ascribed to rich nitrogen content (8.0 at%) and high Pyrrolic nitrogen ratio. Due to their superior hierarchical porous structure and excellent electrochemical performance, the NPPC-800 electrodes presented a high salt adsorption capacity (SAC) of 35.7 mg g-1 and outstanding cycling stability in 10 mM NaCl solution at 1.2 V during the desalination tests. This work demonstrates the utilization of biobased porous carbon material will pave a prospective way in sustainable and potential applications for CDI technique.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据