Estimation of pore sizes using laser absorption in molecular oxygen gas enclosed in mesoporous alumina

Ahmed Al-Saudi; Watheq Al-Basheer; Abdulaziz Aljalal; Khaled Gasmi; Samer Qari

doi:10.1117/12.2519604

Estimation of pore sizes using laser absorption in molecular oxygen gas enclosed in mesoporous alumina

Ahmed Al-Saudi^*
, Watheq Al-Basheer
, Abdulaziz Aljalal
, Khaled Gasmi
, Samer Qari

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Scopus citations

Abstract

Collisions of gas molecules with the walls of small pores in nanoporous materials can cause the width of gas absorption lines to become wider. Also, the effective absorption path lengths through the gas become longer due to multi-scattering within the nanoporous materials. GAs in Scattering Media Absorption Spectroscopy (GASMAS) is an effective technique that can differentiate between the absorption from the gas within pores and the absorption from the bulk of scattering materials. A Vertical-Cavity Surface-Emitting Laser (VCSEL) emitting around 760 nm is used to investigate the absorption from molecular oxygen gas trapped within mesoporous alumina Al₂O₃. The pore size of the alumina samples are also characterized based on Barrett, Joyner and Halenda (BJH) method. In this work, we will present the correlation between the pore sizes of the mesoporous alumina samples the width of the absorption line of molecular oxygen gas under different experimental conditions.

Original language	English
Title of host publication	Optical Sensors 2019
Editors	Francesco Baldini, Jiri Homola, Robert A. Lieberman
Publisher	SPIE
ISBN (Electronic)	9781510627222
DOIs	https://doi.org/10.1117/12.2519604
State	Published - 2019

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	11028
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Bibliographical note

Publisher Copyright:
© 2019 SPIE

Keywords

Alumina
BJH method
FWHM
GAs in scattering media absorption spectroscopy
Laser absorption
Oxygen line broadening
Pore size
Porosity
VCSEL 760nm

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.2519604

Cite this

Al-Saudi, A., Al-Basheer, W., Aljalal, A., Gasmi, K., & Qari, S. (2019). Estimation of pore sizes using laser absorption in molecular oxygen gas enclosed in mesoporous alumina. In F. Baldini, J. Homola, & R. A. Lieberman (Eds.), Optical Sensors 2019 Article 1102818 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11028). SPIE. https://doi.org/10.1117/12.2519604

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title = "Estimation of pore sizes using laser absorption in molecular oxygen gas enclosed in mesoporous alumina",

abstract = "Collisions of gas molecules with the walls of small pores in nanoporous materials can cause the width of gas absorption lines to become wider. Also, the effective absorption path lengths through the gas become longer due to multi-scattering within the nanoporous materials. GAs in Scattering Media Absorption Spectroscopy (GASMAS) is an effective technique that can differentiate between the absorption from the gas within pores and the absorption from the bulk of scattering materials. A Vertical-Cavity Surface-Emitting Laser (VCSEL) emitting around 760 nm is used to investigate the absorption from molecular oxygen gas trapped within mesoporous alumina Al2O3. The pore size of the alumina samples are also characterized based on Barrett, Joyner and Halenda (BJH) method. In this work, we will present the correlation between the pore sizes of the mesoporous alumina samples the width of the absorption line of molecular oxygen gas under different experimental conditions.",

keywords = "Alumina, BJH method, FWHM, GAs in scattering media absorption spectroscopy, Laser absorption, Oxygen line broadening, Pore size, Porosity, VCSEL 760nm",

author = "Ahmed Al-Saudi and Watheq Al-Basheer and Abdulaziz Aljalal and Khaled Gasmi and Samer Qari",

note = "Publisher Copyright: {\textcopyright} 2019 SPIE",

year = "2019",

doi = "10.1117/12.2519604",

language = "English",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

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Al-Saudi, A, Al-Basheer, W , Aljalal, A , Gasmi, K & Qari, S 2019, Estimation of pore sizes using laser absorption in molecular oxygen gas enclosed in mesoporous alumina. in F Baldini, J Homola & RA Lieberman (eds), Optical Sensors 2019., 1102818, Proceedings of SPIE - The International Society for Optical Engineering, vol. 11028, SPIE. https://doi.org/10.1117/12.2519604

Estimation of pore sizes using laser absorption in molecular oxygen gas enclosed in mesoporous alumina. / Al-Saudi, Ahmed; Al-Basheer, Watheq ; Aljalal, Abdulaziz et al.
Optical Sensors 2019. ed. / Francesco Baldini; Jiri Homola; Robert A. Lieberman. SPIE, 2019. 1102818 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11028).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Estimation of pore sizes using laser absorption in molecular oxygen gas enclosed in mesoporous alumina

AU - Al-Saudi, Ahmed

AU - Al-Basheer, Watheq

AU - Aljalal, Abdulaziz

AU - Gasmi, Khaled

AU - Qari, Samer

PY - 2019

Y1 - 2019

N2 - Collisions of gas molecules with the walls of small pores in nanoporous materials can cause the width of gas absorption lines to become wider. Also, the effective absorption path lengths through the gas become longer due to multi-scattering within the nanoporous materials. GAs in Scattering Media Absorption Spectroscopy (GASMAS) is an effective technique that can differentiate between the absorption from the gas within pores and the absorption from the bulk of scattering materials. A Vertical-Cavity Surface-Emitting Laser (VCSEL) emitting around 760 nm is used to investigate the absorption from molecular oxygen gas trapped within mesoporous alumina Al2O3. The pore size of the alumina samples are also characterized based on Barrett, Joyner and Halenda (BJH) method. In this work, we will present the correlation between the pore sizes of the mesoporous alumina samples the width of the absorption line of molecular oxygen gas under different experimental conditions.

AB - Collisions of gas molecules with the walls of small pores in nanoporous materials can cause the width of gas absorption lines to become wider. Also, the effective absorption path lengths through the gas become longer due to multi-scattering within the nanoporous materials. GAs in Scattering Media Absorption Spectroscopy (GASMAS) is an effective technique that can differentiate between the absorption from the gas within pores and the absorption from the bulk of scattering materials. A Vertical-Cavity Surface-Emitting Laser (VCSEL) emitting around 760 nm is used to investigate the absorption from molecular oxygen gas trapped within mesoporous alumina Al2O3. The pore size of the alumina samples are also characterized based on Barrett, Joyner and Halenda (BJH) method. In this work, we will present the correlation between the pore sizes of the mesoporous alumina samples the width of the absorption line of molecular oxygen gas under different experimental conditions.

KW - Alumina

KW - BJH method

KW - FWHM

KW - GAs in scattering media absorption spectroscopy

KW - Laser absorption

KW - Oxygen line broadening

KW - Pore size

KW - Porosity

KW - VCSEL 760nm

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U2 - 10.1117/12.2519604

DO - 10.1117/12.2519604

M3 - Conference contribution

AN - SCOPUS:85073899239

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Optical Sensors 2019

A2 - Baldini, Francesco

A2 - Homola, Jiri

A2 - Lieberman, Robert A.

PB - SPIE

ER -

Estimation of pore sizes using laser absorption in molecular oxygen gas enclosed in mesoporous alumina

Abstract

Publication series

Bibliographical note

Keywords

ASJC Scopus subject areas

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