scholarly journals Selective ion sieving through arrays of sub-nanometer nanopores in chemically tunable 2D carbon membranes

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20785-20791 ◽  
Author(s):  
Pauline M. G. van Deursen ◽  
Zian Tang ◽  
Andreas Winter ◽  
Michael J. Mohn ◽  
Ute Kaiser ◽  
...  
Keyword(s):  
Ion Transport ◽  
Ion Selectivity ◽  
Two Dimensional ◽  
Pore Density ◽  
Molecular Precursors ◽  
Carbon Membranes ◽  
Transport Measurements

Two-dimensional carbon nanomembranes synthesized from molecular precursors act as ion sieving membranes. The pore density and efficiency of ion selectivity are probed using a combination of HR-TEM and ion transport measurements.

scholarly journals Towards explicit regulating-ion-transport: nanochannels with only function-elements at outer-surface

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Qun Ma ◽  
Yu Li ◽  
Rongsheng Wang ◽  
Hongquan Xu ◽  
Qiujiao Du ◽  
...  
Keyword(s):  
Ion Transport ◽  
Numerical Simulations ◽  
Power Density ◽  
Outer Surface ◽  
Internal Resistance ◽  
Porous Membranes ◽  
Two Dimensional ◽  
Ionic Selectivity ◽  
Key Features ◽  
Energy Conversion Devices

AbstractFunction elements (FE) are vital components of nanochannel-systems for artificially regulating ion transport. Conventionally, the FE at inner wall (FEIW) of nanochannel−systems are of concern owing to their recognized effect on the compression of ionic passageways. However, their properties are inexplicit or generally presumed from the properties of the FE at outer surface (FEOS), which will bring potential errors. Here, we show that the FEOS independently regulate ion transport in a nanochannel−system without FEIW. The numerical simulations, assigned the measured parameters of FEOS to the Poisson and Nernst-Planck (PNP) equations, are well fitted with the experiments, indicating the generally explicit regulating-ion-transport accomplished by FEOS without FEIW. Meanwhile, the FEOS fulfill the key features of the pervious nanochannel systems on regulating-ion-transport in osmotic energy conversion devices and biosensors, and show advantages to (1) promote power density through concentrating FE at outer surface, bringing increase of ionic selectivity but no obvious change in internal resistance; (2) accommodate probes or targets with size beyond the diameter of nanochannels. Nanochannel-systems with only FEOS of explicit properties provide a quantitative platform for studying substrate transport phenomena through nanoconfined space, including nanopores, nanochannels, nanopipettes, porous membranes and two-dimensional channels.

scholarly journals HfS2 thin films deposited at room temperature by an emerging technique, solution atomic layer deposition

2021 ◽  
Author(s):  
Yuanyuan Cao ◽  
Sha Zhu ◽  
Julien Bachmann
Keyword(s):  
Thin Films ◽  
Atomic Layer Deposition ◽  
Room Temperature ◽  
Atomic Layer ◽  
Two Dimensional ◽  
Molecular Precursors ◽  
Layer Deposition

The two-dimensional material and semiconducting dichalcogenide hafnium disulfide is deposited at room temperature by atomic layer deposition from molecular precursors dissolved in hexane.

scholarly journals Ion transport through a nanoporous C2N membrane: the effect of electric field and layer number

RSC Advances ◽  
2018 ◽  
Vol 8 (64) ◽  
pp. 36705-36711 ◽  
Author(s):  
You-sheng Yu ◽  
Lu-yi Huang ◽  
Xiang Lu ◽  
Hong-ming Ding
Keyword(s):  
Electric Field ◽  
Ion Transport ◽  
Molecular Dynamic ◽  
Ion Selectivity ◽  
Water Desalination ◽  
Molecular Dynamic Simulations ◽  
Dynamic Simulations ◽  
Layer Number

Using all-atom molecular dynamic simulations, we show that a monolayer C2N membrane possesses higher permeability and excellent ion selectivity, and that multilayer C2N membranes have promising potential for water desalination.

Radial ion transport measurements in a nonaxisymmetric magnetic mirror

1990 ◽  
Vol 2 (9) ◽  
pp. 2173-2184 ◽  
Author(s):  
D. L. Goodman ◽  
C. C. Petty ◽  
R. S. Post
Keyword(s):  
Ion Transport ◽  
Magnetic Mirror ◽  
Transport Measurements

scholarly journals Quantification of the charge transport processes inside carbon nanopipettes

2021 ◽  
Author(s):  
Rujia Liu ◽  
Yingfei Ma ◽  
Xiaoyue Shen ◽  
Dengchao Wang
Keyword(s):  
Charge Transfer ◽  
Ion Transport ◽  
Charge Transport ◽  
Transport Processes ◽  
Transfer Processes ◽  
Transport Measurements

Conductive nanopipettes have been extensively used as powerful multifunctional probes for electrochemical and ion transport measurements, while the involving charge transfer processes have not been fully explored. In this paper,...

Voltage-Gated Ion Transport in Two-Dimensional Sub-1 nm Nanofluidic Channels

ACS Nano ◽  
2019 ◽  
Vol 13 (10) ◽  
pp. 11793-11799 ◽  
Author(s):  
Yuqi Wang ◽  
Huacheng Zhang ◽  
Yuan Kang ◽  
Yinlong Zhu ◽  
George P. Simon ◽  
...  
Keyword(s):  
Ion Transport ◽  
Two Dimensional ◽  
Voltage Gated ◽  
Nanofluidic Channels

Borazatruxenes as precursors for hybrid C-BN 2D molecular networks

Nanoscale ◽  
2022 ◽  
Author(s):  
Anamaria Trandafir ◽  
G. Dan Pantoş ◽  
Adelina Ilie
Keyword(s):  
Molecular Networks ◽  
Two Dimensional ◽  
Molecular Materials ◽  
Molecular Precursors ◽  
Combine Carbon

Synthesizing atomically thin, crystalline two-dimensional (2D) molecular materials which combine carbon with other elements is an emerging field requiring both custom-designed molecular precursors and their ability to organize into networks...

scholarly journals Carbon: Two-Dimensional Porous Carbon: Synthesis and Ion-Transport Properties (Adv. Mater. 36/2015)

2015 ◽  
Vol 27 (36) ◽  
pp. 5254-5254 ◽  
Author(s):  
Xiaoyu Zheng ◽  
Jiayan Luo ◽  
Wei Lv ◽  
Da-Wei Wang ◽  
Quan-Hong Yang
Keyword(s):  
Ion Transport ◽  
Transport Properties ◽  
Porous Carbon ◽  
Two Dimensional
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