Graphene quantum dots/graphene fiber nanochannels for osmotic power generation

2019 ◽  
Vol 7 (41) ◽  
pp. 23727-23732 ◽  
Author(s):  
Ki Hyun Lee ◽  
Hun Park ◽  
Wonsik Eom ◽  
Dong Jun Kang ◽  
Sung Hyun Noh ◽  
...  
Keyword(s):  
Power Generation ◽  
Quantum Dots ◽  
Ion Transport ◽  
Charge Density ◽  
Surface Charge ◽  
Surface Charge Density ◽  
Ion Selectivity ◽  
High Surface ◽  
Graphene Quantum Dots ◽  
High Surface Charge Density

Graphene quantum dots were intercalated into graphene fiber nanochannel as a nano-charger for high surface charge density. The hybrid nanochannel shows efficient ion transport behaviors and ion selectivity facilitating superior osmotic power generation.

A multi-dielectric-layered triboelectric nanogenerator as energized by corona discharge

Nanoscale ◽  
2017 ◽  
Vol 9 (27) ◽  
pp. 9668-9675 ◽  
Author(s):  
Jia Jia Shao ◽  
Wei Tang ◽  
Tao Jiang ◽  
Xiang Yu Chen ◽  
Liang Xu ◽  
...  
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Corona Discharge ◽  
Surface Charge Density ◽  
High Surface ◽  
Cycling Stability ◽  
Triboelectric Nanogenerator ◽  
Excellent Cycling Stability ◽  
Vertical Contact ◽  
High Surface Charge Density

A multi-dielectric-layered vertical contact-separation mode TENG through a corona discharge approach results in outstanding output performances, i.e., a high surface charge density of 283 μC m−2 and excellent cycling stability (92.6% retention after 200 000 cycles).

A coupled effect of dehydration and electrostatic interactions on selective ion transport through charged nanochannels

Nanoscale ◽  
2018 ◽  
Vol 10 (39) ◽  
pp. 18821-18828 ◽  
Author(s):  
Mao Wang ◽  
Wenhao Shen ◽  
Siyuan Ding ◽  
Xue Wang ◽  
Zhong Wang ◽  
...  
Keyword(s):  
Ion Transport ◽  
Charge Density ◽  
Surface Charge ◽  
Surface Charge Density ◽  
Electrostatic Interactions ◽  
Ion Selectivity ◽  
Coupled Effect

The interplay between dehydration and electrostatic interactions leads to a switch in ion selectivity in nanochannels as the surface charge density increases.

scholarly journals Polystyrene latex particles obtained by emulsifier-free emulsion polymerization and their interaction with bentonite

e-Polymers ◽  
2011 ◽  
Vol 11 (1) ◽  
Author(s):  
Ioneta Codrina Bujanca ◽  
Mihai Cosmin Corobea ◽  
Florin Miculescu ◽  
Mihai Dimonie
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Emulsion Polymerization ◽  
Surface Charge Density ◽  
High Surface ◽  
Polystyrene Latex ◽  
Sem Images ◽  
Latex Particles ◽  
Polystyrene Latex Particles ◽  
High Surface Charge Density

AbstractPolystyrene latex particles were prepared by using an emulsifier-free emulsion polymerization with two ionic initiators: potassium persulfate (KPS) and 2,2’-azobis(2-amidinopropane)dihydrochloride (AIBA). The purpose of this study was to obtain polystyrene latex with a good stability in time, a high surface charge density and a small particle size (between 100 and 1000 nm). We used two distinctive molar concentrations for both initiators: 5.5 mM and 55 mM based on aqueous phase. The analysis showed that in the case of KPS initiator the latexes stability was better. With AIBA as initiator smaller latex particles can be achieved. A high surface charge density was measured for large initiator concentration. We achieved satisfying results with both initiators, the optimal condition of polymerization depending on the subsequent utilization of the latex. The SEM images showed that latexes containing bentonite and latexes with no clay have similar size.

Effects of pH and ionic surfactants on ionic latices with high surface charge density

Langmuir ◽  
1989 ◽  
Vol 5 (5) ◽  
pp. 1258-1261 ◽  
Author(s):  
Kazuhiko Kandori ◽  
Hideyuki Ishiguro ◽  
Kijiro Konno ◽  
Ayao Kitahara
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Surface Charge Density ◽  
High Surface ◽  
Ionic Surfactants ◽  
Effects Of Ph ◽  
High Surface Charge Density
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