Approche pour l'analyse quantitative de la distribution de la taille des pores du gel de silice en utilisant la microscopie à force atomique

Translated title of the contribution: An approach for quantitative analysis of pore size distribution of silica gel using atomic force microscopy

M. L. Palash, Sourav Mitra, Harish Sivasankaran, Thu Kyaw, Bidyut Baran Saha

Research output: Contribution to journalArticle

Abstract

This article discusses a direct approach for assessing irregularly shaped pore distribution of porous materials using Atomic Force Microscopy (AFM). Using the tapping mode, AFM is employed to obtain the surface topographic information of the porous materials commonly used in adsorption applications. Three different types of silica gels, commercially used silica–alumina and acetaminophen samples are investigated using an image processing technique to capture the pore size-related information. Macro and mesopores in a specified region are visualized then quantified and counted using 2-D Fast Fourier Transformation (2D FFT) technique. The results obtained by the AFM technique are then compared with the BET surface area and pore size distribution (NLDFT) extracted from the N2 adsorption isotherms.

Original languageFrench
Pages (from-to)72-79
Number of pages8
JournalInternational Journal of Refrigeration
Volume105
DOIs
Publication statusPublished - Sep 1 2019

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Silica gel
Pore size
Atomic force microscopy
Porous materials
Chemical analysis
Adsorption isotherms
Macros
Image processing
Adsorption

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Mechanical Engineering

Cite this

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title = "Approche pour l'analyse quantitative de la distribution de la taille des pores du gel de silice en utilisant la microscopie {\`a} force atomique",
abstract = "This article discusses a direct approach for assessing irregularly shaped pore distribution of porous materials using Atomic Force Microscopy (AFM). Using the tapping mode, AFM is employed to obtain the surface topographic information of the porous materials commonly used in adsorption applications. Three different types of silica gels, commercially used silica–alumina and acetaminophen samples are investigated using an image processing technique to capture the pore size-related information. Macro and mesopores in a specified region are visualized then quantified and counted using 2-D Fast Fourier Transformation (2D FFT) technique. The results obtained by the AFM technique are then compared with the BET surface area and pore size distribution (NLDFT) extracted from the N2 adsorption isotherms.",
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AU - Mitra, Sourav

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AB - This article discusses a direct approach for assessing irregularly shaped pore distribution of porous materials using Atomic Force Microscopy (AFM). Using the tapping mode, AFM is employed to obtain the surface topographic information of the porous materials commonly used in adsorption applications. Three different types of silica gels, commercially used silica–alumina and acetaminophen samples are investigated using an image processing technique to capture the pore size-related information. Macro and mesopores in a specified region are visualized then quantified and counted using 2-D Fast Fourier Transformation (2D FFT) technique. The results obtained by the AFM technique are then compared with the BET surface area and pore size distribution (NLDFT) extracted from the N2 adsorption isotherms.

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