TY - JOUR
T1 - Effects of anion size and concentration on electrolyte invasion into molecular-sized nanopores
AU - LIU, Ling
AU - CHEN, Xi
AU - KIM, Taewan
AU - HAN, Aijie
AU - QIAO, Yi
N1 - YQ was supported by the National Science Foundation (NSF) and the Sandia National Lab under grant no. CMMI-0623973. XC was supported by NSF under grant no. CMMI-0643726, a World Class University (WCU) program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology of Korea (R32-2008000-20042-0), and by National Natural Science Foundation of China grant no. 50928601. LL acknowledges the support of the American Academy of Mechanics and the Robert M and Mary Haythornthwaite Foundation.
PY - 2010/3
Y1 - 2010/3
N2 - When an electrolyte solution is pressurized into a molecular-sized nanopore, oppositely charged ions are strongly inclined to aggregate, which effectively reduces the ion solubility to zero. Inside the restrictive confinement, a unique quasi-periodic structure is formed where the paired ion couples are periodically separated by a number of water molecules. As the anion size or ion concentration varies, the geometrical characteristics of the confined ion structure would change considerably, leading to a significant variation in the transport pressure. Both experimental and simulation results indicate that, contradictory to the prediction of conventional theory, infiltration pressure decreases as the anions become larger. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
AB - When an electrolyte solution is pressurized into a molecular-sized nanopore, oppositely charged ions are strongly inclined to aggregate, which effectively reduces the ion solubility to zero. Inside the restrictive confinement, a unique quasi-periodic structure is formed where the paired ion couples are periodically separated by a number of water molecules. As the anion size or ion concentration varies, the geometrical characteristics of the confined ion structure would change considerably, leading to a significant variation in the transport pressure. Both experimental and simulation results indicate that, contradictory to the prediction of conventional theory, infiltration pressure decreases as the anions become larger. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
UR - http://www.scopus.com/inward/record.url?scp=77951180533&partnerID=8YFLogxK
U2 - 10.1088/1367-2630/12/3/033021
DO - 10.1088/1367-2630/12/3/033021
M3 - Journal Article (refereed)
SN - 1367-2630
VL - 12
JO - New Journal of Physics
JF - New Journal of Physics
M1 - 33021
ER -