Revealing the role of the 1T phase on the adsorption of organic dyes on MoS2 nanosheets

Asmaa M. Omar; Ossama I. Metwalli; Mohamed R. Saber; Gomaa Khabiri; Mohamed E.M. Ali; Arafa Hassen; Mostafa M.H. Khalil; Ahmed A. Maarouf; Ahmed S.G. Khalil

doi:10.1039/c9ra05427h

Revealing the role of the 1T phase on the adsorption of organic dyes on MoS2 nanosheets

Asmaa M. Omar, Ossama I. Metwalli, Mohamed R. Saber, Gomaa Khabiri, Mohamed E.M. Ali, Arafa Hassen, Mostafa M.H. Khalil, Ahmed A. Maarouf, Ahmed S.G. Khalil

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Herein, different phases of MoS2 nanosheets were synthesized, characterized and tested for dye removal from water. The influence of the MoS2 phases as well as the 1T concentration on the adsorption performance of organic dyes MO, RhB and MB was deeply investigated. The results revealed that the 1T-rich MoS2 nanosheets have superior adsorption performance compared to other 2H and 3R phases. The kinetic results of the adsorption process demonstrate that the experimental data followed the pseudo-second order equation. Meanwhile, the adsorption of dyes over the obtained materials was fitted with several isotherm models. The Langmuir model gives the best fitting to the experimental data with maximum a adsorption capacity of 787 mg g-1. The obtained capacity is significantly higher than that of all previous reports for similar MoS2 materials. Computational studies of the 2H and 1T/2H-MoS2 phases showed that the structural defects present at the 1T/2H grain boundaries enhance the binding of hydroxide and carboxyl groups to the MoS2 surface which in turn increase the adsorption properties of the 1T/2H-MoS2 phase.

Original language	English (US)
Pages (from-to)	28345-28356
Number of pages	12
Journal	RSC Advances
Volume	9
Issue number	49
DOIs	https://doi.org/10.1039/c9ra05427h
State	Published - Sep 9 2019
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2022-06-10
Acknowledgements: This work was partially supported by grants funded by Science, Technology and Development Fund (STDF, Egypt) and the Arab-German Young Academy of Sciences and Humanities (AGYA), Germany. A. Maarouf would like to acknowledge the use of the resources of the Supercomputing Laboratory at KAUST, Saudi Arabia.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

ASJC Scopus subject areas

General Chemical Engineering
General Chemistry

Access to Document

10.1039/c9ra05427h

Cite this

@article{003d47bdd4f94aeb8b051730079ac46f,

title = "Revealing the role of the 1T phase on the adsorption of organic dyes on MoS2 nanosheets",

abstract = "Herein, different phases of MoS2 nanosheets were synthesized, characterized and tested for dye removal from water. The influence of the MoS2 phases as well as the 1T concentration on the adsorption performance of organic dyes MO, RhB and MB was deeply investigated. The results revealed that the 1T-rich MoS2 nanosheets have superior adsorption performance compared to other 2H and 3R phases. The kinetic results of the adsorption process demonstrate that the experimental data followed the pseudo-second order equation. Meanwhile, the adsorption of dyes over the obtained materials was fitted with several isotherm models. The Langmuir model gives the best fitting to the experimental data with maximum a adsorption capacity of 787 mg g-1. The obtained capacity is significantly higher than that of all previous reports for similar MoS2 materials. Computational studies of the 2H and 1T/2H-MoS2 phases showed that the structural defects present at the 1T/2H grain boundaries enhance the binding of hydroxide and carboxyl groups to the MoS2 surface which in turn increase the adsorption properties of the 1T/2H-MoS2 phase.",

author = "Omar, {Asmaa M.} and Metwalli, {Ossama I.} and Saber, {Mohamed R.} and Gomaa Khabiri and Ali, {Mohamed E.M.} and Arafa Hassen and Khalil, {Mostafa M.H.} and Maarouf, {Ahmed A.} and Khalil, {Ahmed S.G.}",

note = "KAUST Repository Item: Exported on 2022-06-10 Acknowledgements: This work was partially supported by grants funded by Science, Technology and Development Fund (STDF, Egypt) and the Arab-German Young Academy of Sciences and Humanities (AGYA), Germany. A. Maarouf would like to acknowledge the use of the resources of the Supercomputing Laboratory at KAUST, Saudi Arabia. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2019",

month = sep,

day = "9",

doi = "10.1039/c9ra05427h",

language = "English (US)",

volume = "9",

pages = "28345--28356",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "ROYAL SOC CHEMISTRY",

number = "49",

}

TY - JOUR

T1 - Revealing the role of the 1T phase on the adsorption of organic dyes on MoS2 nanosheets

AU - Omar, Asmaa M.

AU - Metwalli, Ossama I.

AU - Saber, Mohamed R.

AU - Khabiri, Gomaa

AU - Ali, Mohamed E.M.

AU - Hassen, Arafa

AU - Khalil, Mostafa M.H.

AU - Maarouf, Ahmed A.

AU - Khalil, Ahmed S.G.

N1 - KAUST Repository Item: Exported on 2022-06-10 Acknowledgements: This work was partially supported by grants funded by Science, Technology and Development Fund (STDF, Egypt) and the Arab-German Young Academy of Sciences and Humanities (AGYA), Germany. A. Maarouf would like to acknowledge the use of the resources of the Supercomputing Laboratory at KAUST, Saudi Arabia. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2019/9/9

Y1 - 2019/9/9

N2 - Herein, different phases of MoS2 nanosheets were synthesized, characterized and tested for dye removal from water. The influence of the MoS2 phases as well as the 1T concentration on the adsorption performance of organic dyes MO, RhB and MB was deeply investigated. The results revealed that the 1T-rich MoS2 nanosheets have superior adsorption performance compared to other 2H and 3R phases. The kinetic results of the adsorption process demonstrate that the experimental data followed the pseudo-second order equation. Meanwhile, the adsorption of dyes over the obtained materials was fitted with several isotherm models. The Langmuir model gives the best fitting to the experimental data with maximum a adsorption capacity of 787 mg g-1. The obtained capacity is significantly higher than that of all previous reports for similar MoS2 materials. Computational studies of the 2H and 1T/2H-MoS2 phases showed that the structural defects present at the 1T/2H grain boundaries enhance the binding of hydroxide and carboxyl groups to the MoS2 surface which in turn increase the adsorption properties of the 1T/2H-MoS2 phase.

AB - Herein, different phases of MoS2 nanosheets were synthesized, characterized and tested for dye removal from water. The influence of the MoS2 phases as well as the 1T concentration on the adsorption performance of organic dyes MO, RhB and MB was deeply investigated. The results revealed that the 1T-rich MoS2 nanosheets have superior adsorption performance compared to other 2H and 3R phases. The kinetic results of the adsorption process demonstrate that the experimental data followed the pseudo-second order equation. Meanwhile, the adsorption of dyes over the obtained materials was fitted with several isotherm models. The Langmuir model gives the best fitting to the experimental data with maximum a adsorption capacity of 787 mg g-1. The obtained capacity is significantly higher than that of all previous reports for similar MoS2 materials. Computational studies of the 2H and 1T/2H-MoS2 phases showed that the structural defects present at the 1T/2H grain boundaries enhance the binding of hydroxide and carboxyl groups to the MoS2 surface which in turn increase the adsorption properties of the 1T/2H-MoS2 phase.

UR - http://hdl.handle.net/10754/678880

UR - http://xlink.rsc.org/?DOI=C9RA05427H

UR - http://www.scopus.com/inward/record.url?scp=85072313788&partnerID=8YFLogxK

U2 - 10.1039/c9ra05427h

DO - 10.1039/c9ra05427h

M3 - Article

SN - 2046-2069

VL - 9

SP - 28345

EP - 28356

JO - RSC Advances

JF - RSC Advances

IS - 49

ER -

Revealing the role of the 1T phase on the adsorption of organic dyes on MoS2 nanosheets

Abstract

Bibliographical note

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this