Well-designed multihollow magnetic imprinted microspheres based on cellulose nanocrystals (CNCs) stabilized Pickering double emulsion polymerization for selective adsorption of bifenthrin

2015 ◽  
Vol 276 ◽  
pp. 249-260 ◽  
Author(s):  
Wenjing Zhu ◽  
Wei Ma ◽  
Chunxiang Li ◽  
Jianming Pan ◽  
Xiaohui Dai
2021 ◽  
Author(s):  
Xudong Zheng ◽  
Wen Sun ◽  
Ang Li ◽  
Bin Wang ◽  
Rong Jiang ◽  
...  

Abstract Because of dysprosium's unique physical and chemical properties and limited supply, the price of rare earth dysprosium has been high in recent years. Therefore, the study of the method of high efficiency selective separation of dysprosium has the double value of scientific research and practical economy. In this paper, we used periodic cellulose nanocrystals as the basic structure, polyethylenimine and graphene oxide were introduced, combined with imprinting technology, to construct porous imprinted aerogel and use it for selective adsorption of Dy(III). The physical and chemical properties were characterized by SEM, TEM, FT-IR and TGA. It was proved that both polyethylenimine and graphene oxide were crosslinked effectively with cellulose nanocrystals. Adsorption experiments showed that the composite imprinted aerogel could selectively adsorb dysprosium effectively, and the maximum adsorption capacity for Dy(III) was 36.495 mg g− 1. The reproducibility experiment showed that aerogel had good regeneration ability. In conclusion, cellulose nanocrystals aerogel, which is environmentally friendly, efficient and repeatable, is expected to provide a new direction for the recovery of rare earth elements.


2019 ◽  
Vol 43 (37) ◽  
pp. 14747-14755 ◽  
Author(s):  
Yanhua Sun ◽  
Yange Zhang ◽  
Zhiyu Ju ◽  
Liangfeng Niu ◽  
Zhaoxiang Gong ◽  
...  

Hydroxyapatite-stabilized Pickering emulsions and their application in the extraction of quercetin.


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