期刊
NEW JOURNAL OF CHEMISTRY
卷 44, 期 28, 页码 12058-12067出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0nj02424d
关键词
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资金
- National Nanotechnology Center [P1952285]
- National Science and Technology Development Agency (NSTDA), Thailand
In this work, hierarchical porous carbons were fabricatedviaan environmentally friendly and sustainable approach involving self-assembly of a cross-linked lignin polymer with a less toxic cross-linker and a triblock copolymer template. The porous carbons obtained by using different cross-linking agents were evaluated by N(2)adsorption/desorption analyses, scanning electron microscopy, and transmission electron microscopy, revealing a tunable ratio of mesopore to micropore volume. The utilization of lignin-derived porous carbons for capacitive deionization (CDI) was investigated. The results showed that a porous carbon electrode with a higher mesoporosity (a lower specific surface area) exhibited higher salt adsorption capacity and a better rate capability, compared to the high specific surface area of a micro-dominant porous carbon electrode. The contribution of mesopores was to promote the ion transfer into the interior pores, providing a more accessible surface area, thus improving the capacity of ion storage. This work presents an example of CDI utilization and a value-added approach of bio-based lignin materials as promising electrode materials for desalination applications.
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