期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 537, 期 -, 页码 562-568出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.11.047
关键词
Nanonetwork-structured carbon; Hollow nanosphere; Formaldehyde adsorption; Facile preparation; High performance
资金
- National Natural Science Foundation of China [51602107, U1501242, 21571066, 21671069]
- Tip-top Scientific and Technical Innovative Youth Talents of Guangdong Special Support Program [2017TQ04C419]
- Program for Pearl River New Star of Science and Technology in Guangzhou [201710010104]
Facile design and construction of advanced materials for eliminating the indoor formaldehyde pollution is still a great challenge but very desirable to provide clean air for human life. Herein, we report a high-performance formaldehyde adsorbent, i.e., a new type of nanonetwork-structured carbon (NNSC) with a hollow nanosphere as network unit by developing a facile, efficient and post-treatment-free strategy. The NNSCs can be easily obtained by a simple carbonization of a mixture, in which natural wheat husk and Teflon are used as carbon precursor and biotemplate-in-situ-remover, respectively. The as-constructed NNSC exhibits a unique three-dimensional interconnected micro-, meso- and macroporous nanonetwork. Benefiting from such a valuable hollow nanosphere-interconnected network structure, the NNSCs show surprising formaldehyde gas adsorption properties including super-high storage capacity, ultrafast adsorption rate and efficient adsorptively active surface. Remarkably, their specific adsorption capacity and maximum adsorption rate are as high as 120.3 mg g(-1) m(-3) and 44.6 mg g(-1) M-3 h(-1), which make 18-fold and 41-fold enhancement when compared to activated carbon commercially used for formaldehyde adsorption, respectively. This work highlights an efficient solution to develop high-performance formaldehyde adsorbents by facile and rational construction of novel porous structure, simultaneously to provide a new avenue to high-value advanced materials for challenging environmental issue. (C) 2018 Elsevier Inc. All rights reserved.
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