期刊
ADVANCED FUNCTIONAL MATERIALS
卷 32, 期 12, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202110087
关键词
capacitive deionization; cluster synthesis; metal nanoclusters; metal-organic framework; size control
类别
资金
- National Natural Science Foundation of China [52009057]
- Taishan Scholar Foundation of Shandong Province [tsqn201812074]
- Natural Science Foundation of Shandong Province [ZR201910240303, ZR2019YQ07]
- Scientific Research Foundation of Qingdao University of Science and Technology [210/010029039, 210/0100229008]
The authors proposed a novel strategy to synthesize ultrasmall bismuth nanoclusters and applied them in electrochemical deionization to address global freshwater scarcity. This method achieved ultrafast desalination and outstanding stability.
Ultrasmall metal nanoclusters (MNCs, <3 nm) have emerged as a novel class of functional nanomaterials. Different from the prosperous development of noble MNCs, the fabrication of non-noble MNCs remains a major challenge, which greatly curtails the advance of relevant application fields. Herein the authors put forward an in situ synthesis strategy of bismuth nanoclusters (Bi NCs) within carbon nano-bundles (Bi NCs@CNBs) by simply carbonizing the Bi-containing metal-organic framework (Bi-MOF), and deploy it as a Cl- capturing electrode for electrochemical deionization (EDI) towards the relief of global freshwater scarcity. Of note, as a killing two birds with one stone strategy, the Bi-MOF not only makes the in situ formation of Bi NCs possible but also provides a reinforcing carbon shell for better electronic conductivity and structural stability. As a result, the Bi NCs@CNB-based EDI system displays ultrafast desalination (0.52 mg g(-1) s(-1)) with outstanding cycling stability, which is beneficial from the ultrasmall size of the electrode material and cannot be achieved by large-sized Bi nanoparticle-based system. This work is interesting because it unprecedentedly introduces ultrasmall MNCs into EDI to manipulate the surface-controlled Cl- storage for ultrafast EDI, boosting the advances of both non-noble MNCs and their application in EDI.
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