Nitrogen-Doped Hollow Mesoporous Carbon Spheres for Efficient Water Desalination by Capacitive Deionization
Nitrogen-Doped Hollow Mesoporous Carbon Spheres for Efficient Water Desalination by Capacitive Deionization
复制标题
掺氮中空介孔碳球通过电容去离子实现高效水淡化
DOI：
10.1021/acssuschemeng.7b00884
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发表时间：
2017-08-01
影响因子：
8.4
通讯作者：
Wang, Lianjun
中科院分区：
文献类型：
--
作者：
Li, Yang;Qi, Junwen;Wang, Lianjun
电容式去离子（CDI）的脱盐性能在很大程度上取决于电极材料的性能。合理设计和调整电极材料的结构和成分，以获得高的CDI性能具有重要意义。本文研究了氮掺杂的中空介孔碳球（N-HMCSs）作为电极材料的CDI应用。为了理解结构和组成对CDI性能的影响，另外两种CDI电极材料，即，制备了中空介孔碳球（HMCSs）和固体介孔碳球（SMCSs）以进行比较。所制备的N-HMCSs具有独特的空腔结构和优异的氮掺杂性能，离子扩散快，电荷转移能力强，润湿性好。与HMCSs和SMCSs电极相比，N-HMCSs电极的电吸附容量和电吸附速率均有所提高，说明中空结构和氮气的协同作用对CDI性能的影响。
Water desalination performance of capacitive deionization (CDI) largely depends on electrode materials properties. Rational design and regulation of the structure and composition of electrode materials to acquire high CDI performance is of great significance. Herein, nitrogen-doped hollow mesoporous carbon spheres (N-HMCSs) were investigated as electrode material for CDI application. To understand the effect of structure and composition on CDI performance, another two CDI electrode materials, i.e., hollow mesoporous carbon spheres (HMCSs) and solid mesoporous carbon spheres (SMCSs) were prepared for comparison. The obtained N-HMCSs possessed unique hollow cavity and excellent nitrogen doping property, resulting in fast ion diffusion, good charge transfers ability and fine wettability. Compared with HMCSs and SMCSs electrodes, N-HMCSs electrode exhibited an improved electrosorption capacity and rate, demonstrating the dependence of CDI performance on the synergistic effect of hollow structure and nitrogen ...