Influence of Adsorbate-Induced Charge Screening, Depolarization Factor, Mobile Carrier Concentration, and Defect-Induced Microstrain on the Size Effect of a BaTiO3Nanoparticle

AbstractThe separation of Cd(II) and Ni(II) ions was studied in an aqueous sulphate medium using supported liquid membrane (SLM). D2EHPA/M2EHPA was used as a mobile carrier, microporous hydrophobic PTFE film was used as a solid support for the liquid membrane, and the strip phase was sulphuric acid. The effects of different parameters such as feed concentration, carrier concentration, feed phase pH, and strip phase pH on the separation factor and flux of Cd(II) and Ni(II) ions were studied. The optimum values obtained to achieve the maximum flux were 5.0 for feed pH, 40 vol. % for D2EHPA/M2EHPA concentration in the membrane phase, 0.5 for strip pH, and 0.012 mass % for feed concentration. Under these optimum conditions, the flux values of Cd(II) and Ni(II) were 15.7 × 10−7 kg m−2 s−1 and 2.6 × 10−7 kg m−2 s−1, respectively. The separation factors of Cd(II) over Ni(II) were studied under different experimental conditions. At a carrier concentration of 10 vol. % and feed concentration of 0.012 mass %, the maximum value of 185.1 was obtained for the separation factor of Cd(II) over Ni(II). After 24 h, the percentages of the extracted Cd(II) and Ni(II) were 83.3 % and 0.45 %, respectively.

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Spatially separated bimetallic cocatalysts on hollow-structured TiO2 for photocatalytic hydrogen generation

Materials Chemistry Frontiers ◽

10.1039/d0qm00042f ◽

2020 ◽

Vol 4 (6) ◽

pp. 1671-1678

Author(s):

Ping She ◽

Jun-sheng Qin ◽

Heng Rao ◽

Buyuan Guan ◽

Jihong Yu

Keyword(s):

Size Effect ◽

Charge Separation ◽

Hydrogen Generation ◽

Au Nps ◽

Photocatalytic Hydrogen Generation ◽

Induced Charge ◽

Spr Effect ◽

Effect Of Pd

A hollow-structured TiO2 decorated with spatially separated bimetallic cocatalysts (Pd@TiO2@Au) was obtained, which exhibited superior photo-induced charge separation by combining the SPR effect of Au NPs and the smaller size effect of Pd NPs.

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Effects of Salt-Induced Charge Screening on AOT Adsorption to the Planar and Nanoemulsion Oil–Water Interfaces

Langmuir ◽

10.1021/acs.langmuir.0c03606 ◽

2021 ◽

Author(s):

Andrew P. Carpenter ◽

Marc J. Foster ◽

Konnor K. Jones ◽

Geraldine L. Richmond

Keyword(s):

Charge Screening ◽

Oil Water ◽

Induced Charge

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Frequency shifts of optical phonons due to size-effect induced charge transfer in Tl(Ba1−xSrxLa)CuO5

Solid State Communications ◽

10.1016/0038-1098(93)90506-i ◽

1993 ◽

Vol 88 (4) ◽

pp. 271-274 ◽

Cited By ~ 1

Author(s):

T. Mertelj ◽

A. Sundaresan ◽

L.C. Gupta ◽

M. Sharon ◽

D. Mihailović

Keyword(s):

Charge Transfer ◽

Size Effect ◽

Optical Phonons ◽

Frequency Shifts ◽

Induced Charge

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Quantitative, Nanoscale Free-Carrier Concentration Mapping Using Terahertz Nearfield Nanoscopy

ISTFA 2010: Conference Proceedings from the 36th International Symposium for Testing and Failure Analysis ◽

10.31399/asm.cp.istfa2010p0020 ◽

2010 ◽

Author(s):

J. Wittborn ◽

R. Weiland ◽

A. J. Huber ◽

F. Keilmann ◽

R. Hillenbrand

Keyword(s):

Atomic Force Microscope ◽

Carrier Concentration ◽

Spatial Resolution ◽

Near Field ◽

High Sensitivity ◽

Free Carrier ◽

Atomic Force ◽

Mobile Carrier ◽

Field Excitation ◽

Concentration Mapping

Abstract We use ultra-resolving terahertz (THz) near-field microscopy based on THz scattering at atomic force microscope tips to analyze 65-nm technology node transistors. Nanoscale resolution is achieved by THz field confinement at the very tip apex to within 30 nm. Images of semiconductor transistors provide evidence of 40 nm (λ/3000) spatial resolution at 2.54 THz (wavelength λ = 118µm) and demonstrate the simultaneous THz recognition of materials and mobile carriers in a single nanodevice. The mobile carrier contrast can be clearly related to near-field excitation of THz-plasmons in the semiconductor regions. The extraordinary high sensitivity of our microscope provides THz near-field contrasts from less then 100 mobile electrons in the probed volume.

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