Molecular dynamic simulation of core–shell structure: study of the interaction between modified surface of nano-SiO2 and PAMAA in vacuum and aqueous solution

2017 ◽  
Vol 24 (9) ◽  
pp. 897-914 ◽  
Author(s):  
Shanshan Dai ◽  
Yan Liu ◽  
Jinghan Zhang ◽  
Tailiang Zhang ◽  
Zhiyu Huang ◽  
...  
2021 ◽  
Vol 261 ◽  
pp. 117844
Author(s):  
Xuan Feng ◽  
Fan Li ◽  
Mingming Ding ◽  
Ran Zhang ◽  
Tongfei Shi ◽  
...  

2021 ◽  
Author(s):  
Junzhe Chen ◽  
Haiying Du ◽  
Yifeng Xu ◽  
Boyu Ma ◽  
Zhihong Zheng ◽  
...  

Abstract Carbon quantum dots (CQDs) were synthesized by coffee-grounds as carbon source under hydrothermal carbonization treatment for the first time. The obtained CQDs showed a strong emission at the wavelength of 460 nm, with an optimum excitation of 370 nm, and enrichment of the surface functional groups(-OH, -NH2). Sodium cyclamate in an aqueous solution and the CQDs could form a core-shell structure by hydrogen-bonding and van der waals bonding to enhance the fluorescent emission. Cyclohexyl sulfamate forms cyclohexyl sulfamate in an aqueous solution and then undergoes dehydration and condensation with the hydroxyl groups on the carbon quantum dots, and finally sodium cyclamate forms a core-shell structure around the carbon quantum dots.环己基氨基磺酸盐在水溶液中形成环己基氨基磺酸盐,然后与碳量子点上的羟基进行脱水和缩合,最后环甜酸钠在碳量子点周围形成核-壳结构。Cyclohexyl sulfamate form a cyclohexyl sulfamic acid in an aqueous solution followed by dehydration condensation with hydroxyl groups on the carbon quantum dots, cyclamate final core-shell structure is formed in the peripheral carbon quantum dot,


2021 ◽  
Author(s):  
Lin Qian ◽  
Zheng Zeng ◽  
Shuyuan Zhang ◽  
Kai Xia ◽  
Yongfu Guo

In the present work, a poly-o-vanillin-functionalized magnetic nanoparticle of PoVan/CoFe2O4@mSiO2 with core-shell structure was synthesized through a facile,green and low cost method. The rapid removal of Hg(II) by the prepared...


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