Duong Do

Monte Carlo Simulation of Adsorption-Induced Deformation in Finite Graphitic Slit Pores

Publisher: American Chemical Society (ACS)

Date: 15-12-2016

DOI: 10.1021/ACS.JPCC.6B10135

Phase Properties and Wetting Transitions of Simple Gases on Graphite─Characteristic Temperatures of Monolayer Adsorbate

Publisher: American Chemical Society (ACS)

Date: 30-03-2022

DOI: 10.1021/ACS.JCED.1C00911

Evidence of bimolecular layer of ethanol on graphite at 190K - Experimental and simulation studies

Publisher: Elsevier BV

Date: 10-2023

DOI: 10.1016/J.CARBON.2023.118535

On the transition from partial wetting to complete wetting of methanol on graphite

Publisher: Royal Society of Chemistry (RSC)

Date: 2019

DOI: 10.1039/C9CP05118J

Abstract: Excellent agreement with experiment for methanol adsorption on graphitized carbon black at low temperatures by Monte Carlo simulation. Incomplete wetting and complete wetting are observed at a range of temperatures above the triple point.

Lower Closure Point for Nitrogen or Argon Adsorption in Mesoporous Solids: Window-Induced Evaporation or Surface-Induced Cavitation?

Publisher: American Chemical Society (ACS)

Date: 13-10-2021

DOI: 10.1021/ACS.IECR.1C02748

Adsorption on Nanopores of Different Cross Sections Made by Electron Beam Nanolithography

Publisher: American Chemical Society (ACS)

Date: 15-12-2017

DOI: 10.1021/ACS.LANGMUIR.7B03695

Abstract: Adsorption on nanoporous matrices is characterized by a pronounced hysteresis loop in the adsorption isotherm, when the substrate is loaded and unloaded with adsorbate, the origin of which is a matter of immense debate in the literature. In this work, we report a study of argon adsorption at 85 K on nonconnecting nanopores with one end closed to the surrounding where the effects of different pore cross sections fabricated by electron beam lithography (EBL) are investigated. A polymethylmethacrylate (PMMA) resist is deposited on the electrodes of a sensitive quartz crystal microbalance without degradation of the resonance quality factor or the long-term and short-term stabilities of the device even at cryogenic temperatures. Four different pores' cross sections: circular, square, rectangular, and triangular, are produced from EBL, and the isotherms for these pore shapes exhibit pronounced hysteresis loops whose adsorption and desorption branches are nearly vertical and have almost the same slopes. No difference is observed in the hysteresis loops of the isotherms for the pores with triangular and square cross sections, whereas the hysteresis loop for the pore with circular cross sections is much narrower, suggesting that they are more regular than the other pores. All of these observations suggest that the hysteresis behavior resulted mainly from microscopic geometric irregularities present in these porous matrices.

Effects of the adsorbate-gas interface at the pore opening on the lower closure point in gaseous adsorption in porous solids

Publisher: Elsevier BV

Date: 2024

DOI: 10.1016/J.JCIS.2023.10.034

Nonwetting/Prewetting/Wetting Transition of Ammonia on Graphite

Publisher: American Chemical Society (ACS)

Date: 21-12-2018

DOI: 10.1021/ACS.LANGMUIR.8B03634

Abstract: Simulations of ammonia adsorption on graphite were carried out over a range of temperatures to investigate the transition from nonwetting to wetting. The process is governed by a subtle interplay between the various interactions in the system and the temperature. At temperatures below the bulk triple point, the system is nonwetting above the triple point, we observed continuous wetting, preceded by a prewetting region in which the so-called thin-to-thick film transition occurs. This system serves as an excellent ex le of wetting/nonwetting behavior in an associating fluid as a function of temperature because the heat of sublimation (or condensation) is greater than the isosteric heat of adsorption at zero loading. The nonwetting-to-wetting transition (NW/W) is also strongly affected by the adsorbate-adsorbate interaction, which becomes important when this contribution to the isosteric heat is of a similar magnitude to the heat of condensation. An appropriate indicator of a NW/W transition at a given loading is therefore the difference between the isosteric heat and the heat of sublimation (or condensation). Our simulation results show the "thin-to-thick" film transition in the temperature range between 195 and 240 K, which has not been previously explained. Above 240 K, continuous wetting occurs. This study provides a basis for a better understanding of adsorption in a range of systems because ammonia is an intermediate between simple molecules, such as argon, and strongly associating fluids, such as water.

A new interpretation of chemical potential in adsorption systems and the vapour–liquid interface

Publisher: Springer Science and Business Media LLC

Date: 29-06-2018

DOI: 10.1007/S10450-018-9957-Y

Characterization of non-graphitized carbon blacks: a model with surface crevices

Publisher: Royal Society of Chemistry (RSC)

Date: 2021

DOI: 10.1039/D1CP01631H

Abstract: Structure of adsorbate on a homogeneous surface and a creviced surface.

Evolution of adsorption isotherm and isosteric heat from sub-triple to super-critical points

Publisher: Springer Science and Business Media LLC

Date: 25-01-2021

DOI: 10.1007/S10450-020-00294-5

Discovery Projects - Grant ID: DP0450186

Start Date: 2004

End Date: 12-2009

Amount: $764,000.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP160103540

Start Date: 03-2016

End Date: 12-2019

Amount: $280,000.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP0987969

Start Date: 2009

End Date: 12-2014

Amount: $600,000.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP0345811

Start Date: 2003

End Date: 12-2005

Amount: $195,000.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP0771213

Start Date: 2007

End Date: 12-2011

Amount: $240,000.00

Funder: Australian Research Council

Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0989675

Start Date: 2009

End Date: 04-2010

Amount: $180,000.00

Funder: Australian Research Council